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Date discovered:28/12/2009
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:138.752 Bytes
MD5 checksum:c815412b85179aeec5a62d6b7ad19e60
IVDF version: - Monday, December 28, 2009

 General Aliases:
   •  Mcafee: W32/Palevo
   •  Panda: W32/Slenfbot.AE
   •  Eset: Win32/AutoRun.IRCBot.DZ
   •  Bitdefender: Trojan.Generic.IS.420679

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

Side effects:
   • Downloads a malicious file
   • Drops malicious files
   • Registry modification
   • Third party control

 Files It copies itself to the following location:
   • %SYSDIR%\wmisfrh.exe

It tries to download a file:

The location is the following:
   • http://1.img-myspace.info/net/**********

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

   • "ctfmon.exe"="ctfmon.exe"

It creates the following entries in order to bypass the Windows XP firewall:

   • "%SYSDIR%\wmisfrh.exe"="%SYSDIR%\wmisfrh.exe:*:Enabled:UPnP Firewall"

   • "%SYSDIR%\wmisfrh.exe"="%SYSDIR%\wmisfrh.exe:*:Enabled:UPnP Firewall"

The following registry keys are added:

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\ctfmon.exe]
   • "Debugger"="wmisfrh.exe"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\
   • "%SYSDIR%\wmisfrh.exe"=""

The following registry keys are changed:

   New value:
   • "ctfmon.exe"="ctfmon.exe"

   New value:
   • "ctfmon.exe"="ctfmon.exe"

 IRC To deliver system information and to provide remote control it connects to the following IRC Server:

Server: tealc.dw**********.info
Port: 35920
Server password: su1c1d3
Channel: #net
Nickname: USA|V3H|0|XP|%number%

 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.

Descripción insertada por Petre Galan el miércoles 17 de marzo de 2010
Descripción actualizada por Petre Galan el miércoles 17 de marzo de 2010

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