Full description

Virus:	Worm/Slenfbot.151552.D.5
Date discovered:	20/08/2010
Type:	Worm
In the wild:	Yes
Reported Infections:	Low to medium
Distribution Potential:	Low to medium
Damage Potential:	Low to medium
Static file:	Yes
File size:	151.552 Bytes
MD5 checksum:	60f0f7140c182a0c838141495624c53d
VDF version:	7.10.04.181
IVDF version:	7.10.10.237 - Friday, August 20, 2010

General Methods of propagation:
   • Autorun feature
   • Local network
   • Messenger

Aliases:
   • Bitdefender: IRC-Worm.Generic.13153
   • Panda: W32/Slenfbot.AD
   • Eset: Win32/AutoRun.IRCBot.DZ

Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Drops malicious files

Files It copies itself to the following location:
• %drive%\gdjfyrfg.exe

The following file is created:

– %drive%\autorun.inf This is a non malicious text file with the following content:
• %code that runs malware%

Messenger It is spreading via Messenger. The characteristics are described below:

– Xfire

Network Infection In order to ensure its propagation the malware attemps to connect to other machines as described below.

Exploit:
It makes use of the following Exploits:
– MS04-007 (ASN.1 Vulnerability)
– MS06-040 (Vulnerability in Server Service)

Miscellaneous Checks for an internet connection by contacting the following web site:
   • http://www.whatismyip.org
Accesses internet resources:
   • http://s85.freefilehd.com/net/**********
   • http://195.137.213.67/net/**********

File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Petre Galan on dinsdag 18 januari 2011
Description updated by Petre Galan on dinsdag 18 januari 2011

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