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Topic: Warning!!!!!!!!!! side 1 (Read 382 times) |
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The mad viking
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Warning!!!!!!!!!! side 1
« on: Jan 17th, 2003, 4:38am » |
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Backdoor.Massaker
Discovered on: January 16, 2003
Last Updated on: January 16, 2003 10:26:04 AM
Backdoor.Massaker is a backdoor Trojan that allows complete access to the infected computer. By default it listens on port 7119. In addition, this Trojan horse attempts to terminate the processes of several security products.
Backdoor.Massaker is written in the Microsoft Visual Basic (VB) programming language and compressed with UPX. The VB run-time libraries must be installed on the computer for it to execute.
Type: Trojan Horse
Infection Length: 254,976 bytes
Systems Affected: Windows 95, Windows 98, Windows NT, Windows 2000, Windows XP, Windows Me
Systems Not Affected: Windows 3.x, Macintosh, OS/2, UNIX, Linux
Virus Definitions (Intelligent Updater) *
January 16, 2003
Virus Definitions (LiveUpdate™) **
January 22, 2003
*
Intelligent Updater virus definitions are released daily, but require manual download and installation.
Click here to download manually.
**
LiveUpdate virus definitions are usually released every Wednesday.
Click here for instructions on using LiveUpdate.
Wild:
Number of infections: 0 - 49
Number of sites: 0 - 2
Geographical distribution: Low
Threat containment: Easy
Removal: Moderate
Threat Metrics
Wild:
Low
Damage:
High
Distribution:
Low
Damage
Payload:
Causes system instability: May shut down, restart, or crash the system.
Compromises security settings: Attempts to terminate the processes of several security products.
Distribution
Ports: 7119
When Backdoor.Massaker is executed, it reads the configuration data from itself and may perform some of the following actions:
1. Copies itself to the %Windir% folder or %System% folder.
NOTES:
%Windir% is a variable. The Trojan locates the Windows installation folder (by default, this is C:\Windows or C:\Winnt) and copies itself to that location.
%System% is a variable. The Trojan locates the System folder and copies itself to that location. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).
2. Terminates several security products.
3. Modifies the Win.ini file, System.ini file, or the Windows registry so that Backdoor.Massaker runs each time you start Windows.
4. Displays a fake error message.
5. Steals the MSN Messenger password.
6. Notifies the hacker through the Callback IP, ICQ, or email.
7. Shuts down the specified tasks.
8. Shuts down, restarts, or crashes the system.
9. Displays the specified messages.
10. Executes the specified programs or plug-ins.
11. Creates a specified mutex.
12. Listens on a port (by default, it is 7,119) and waits for commands from the hacker.
Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":
Turn off and remove unneeded services. By default, many operating systems install auxiliary services that are not critical, such as an FTP server, telnet, and a Web server. These services are avenues of attack. If they are removed, blended threats have less avenues of attack and you have fewer services to maintain through patch updates.
If a blended threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files.
Isolate infected computers quickly to prevent further compromising your organization. Perform a forensic analysis and restore the computers using trusted media.
Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
These instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.
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