Recent Posts

Recent Comments

[ VAKSIN VIRUS ] - W32.HLLP.Sality Risk

Friday, January 30, 2009 ·

W32.HLLP.Sality Risk
Level 2: Low Discovered: June 4, 2003
Updated: February 13, 2007 12:50:41 PM
Also Known As: Win32.Sality.A [Computer Assoc, Virus.Win32.Sality.{a-j} [Kasp, W32.Sality.{a, b, d-l} [McAfee], W32/Sality-{A, B, E-H} [Sophos], PE_SALITY.{A, H-K} [Trend Micro]
Type: Virus
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP


W32.HLLP.Sality is a virus with keylogging and back door capabilities. It may infect executable files by prepending its code to host files.

Note: Virus definitions dated prior to January 17, 2006 may detect this threat as Backdoor.Rustok.

Discovered: June 4, 2003
Updated: February 13, 2007 12:50:41 PM
Also Known As: Win32.Sality.A [Computer Assoc, Virus.Win32.Sality.{a-j} [Kasp, W32.Sality.{a, b, d-l} [McAfee], W32/Sality-{A, B, E-H} [Sophos], PE_SALITY.{A, H-K} [Trend Micro]
Type: Virus
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP


When W32.HLLP.Sality is executed, it performs the following actions:

1. May drop a .dll file in the %System% or %Temp% folders. The following are some examples of the filenames:

* SYSLIB32.DLL
* OLEDSP32.DLL
* SYSDLL.DLL
* OLEMDB32.DLL

Note:
* %System% is a variable that refers to the System folder. By default this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).
* %Temp% is a variable that refers to the Windows temporary folder. By default, this is C:\Windows\TEMP (Windows 95/98/Me/XP) or C:\WINNT\Temp (Windows NT/2000).

2. Creates the mutex named "KUKU300a" so that only one instance of the threat runs on the compromised computer.

3. May infect executable files registered in the following registry:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Any files infected with this virus will be detected as W32.HLLP.Sality!inf.

4. Checks the current time and may activate its payload if minutes are equal to hours and if the date is May 1st or the 10th to 12th of any month.

5. May then activate the payload, and display a message box with the following characteristics:

Title: Win32.HLLP.Kuku v[VERSION_NUMBER]
Body:
<<<<>>>>
'Copy[REMOVED]tor'

6. May add its configuration data to the file %Windir%\System.ini by appending some of the following lines to this file:

[TFTempCache]
id=[RANDOM_NUMBER]
RtlMoveMeory=[RANDOM_NUMBER]
PING=[NUMBER]
TIME=[TIME]

Note: %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

7. May test connectivity by attempting to contact the following host:

www.microsoft.com

8. Uses keylogging capabilities to gather the following information from the compromised computer:

* IP address, host name, and user names
* Sensitive computer information, such as size of memory, local disks, the Windows version, and product key
* RAS dialup accounts
* Net Share passwords
* Startup programs
* WebMoney files

9. Temporarily stores any information it gathers in the following encrypted file:

%System%\TFTempCache

10. May send this information to several email addresses located in Russia using the following SMTP server over TCP port 25:

msx.mail.ru

This email has the following characteristics:

From: CyberMazafaka@mailru.com

To: sector2007@list.ru, bespontovik@list.ru

Subject: Administrator

Attachment:
* readme.tjc
* TFTempCache.tjc

11. Contains references to the following IRC server:

rinet.msk.wenet.ru

Note: At the time of writing, code to utilize this server is not implemented.

12. Allows a remote attacker to perform various unauthorized actions on the compromised computer.

13. May infect executable files by prepending its code to the host file. However, not all the variants of this virus are able to spread in this way. Any infected files will be detected as W32.HLLP.Sality!inf.

14. May delete the files which have the following extensions when searching for files to infect:

* .vdb
* .avc
* .key

15. May also delete those file names which begin with the following strings:

* KAV
* NOD
* ANTI
* SCAN
* ZONE
* ANDA
* TROJ
* TREN
* ALER
* CLEAN
* OUTP
* GUAR
* AVP
* TOTAL


Recommendations

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

* Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
* 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.
* Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
* Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
* Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
* Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
* If a 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.
* Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
* Isolate compromised computers quickly to prevent threats from spreading further. 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.
* If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
* For further information on the terms used in this document, please refer to the Security Response glossary.

Writeup By: Elia Florio

0 comments:

About this blog

VAKSIN VIRUS KOMPUTER , antivirus terbaru, solusi virus, daftar virus terbaik, cara hilangkan virus

Site Sponsors

Klick To View

UPLOAD FILE DI ZIDDU DAPAET DUID

Silahkan daftar dengan mengklik banner dibawah