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Virus:Worm/Palevo.NXS.13
Date discovered:19/01/2010
Type:Worm
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Low
Static file:Yes
File size:115.712 Bytes
MD5 checksum:c812f6d66ef22a05e61160ad23ff279a
IVDF version:7.10.02.236 - Tuesday, January 19, 2010

 General Method of propagation:
   • Autorun feature


Aliases:
   •  Mcafee: W32/IRCbot.gen.aj virus
   •  Panda: W32/P2Pworm.EU
   •  Eset: Win32/Peerfrag.BL
   •  Bitdefender: Win32.Worm.Palevo.O


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%\wnzip32.exe
   • %drive%\RECYCLER\autorun.exe



The following files are created:

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

 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%\wnzip32.exe"

 Backdoor The following ports are opened:

– mails.cl**********.net on UDP port 8118
– mails.na**********.org on UDP port 8118
– mails.le**********.com on UDP port 8118

 Injection – It injects itself as a thread into a process.

    Process name:
   • explorer.exe


 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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