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Virus:Worm/Palevo.nli
Date discovered:04/01/2010
Type:Worm
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Low
Static file:Yes
File size:163.328 Bytes
MD5 checksum:a57e5a050d0d25deb048bc8aa2c608ba
IVDF version:7.10.02.113 - Monday, January 4, 2010

 General Method of propagation:
    Autorun feature


Aliases:
   •  Mcafee: W32/IRCbot.gen.aj
   •  Sophos: W32/Ircbot-AGI
   •  Panda: W32/P2Pworm.EU
   •  Eset: Win32/Peerfrag.EC
   •  Bitdefender: Backdoor.Bot.111792


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


Side effects:
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following locations:
   • %recycle bin%\%CLSID%\MsMxEng.exe
   • %drive%\winguard\wwload.exe



The following files are created:

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

%recycle bin%\%CLSID%\Desktop.ini

 Registry One of the following values is added in order to run the process after reboot:

  [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • "Taskman"="%recycle bin%\%CLSID%\MsMxEng.exe"

 Backdoor The following ports are opened:

di**********.cn on UDP port 44500
fr**********.com on UDP port 44500
an**********.com on UDP port 44500

 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 Tuesday, March 16, 2010
Description updated by Petre Galan on Tuesday, March 16, 2010

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