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Date discovered:28/05/2009
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:103.426 Bytes
MD5 checksum:efb79707d37652ce1ffe296d77e55277
IVDF version:

 General Method of propagation:
   • Messenger

   •  Bitdefender: Worm.P2P.Palevo.ER
   •  Panda: Trj/Agent.NWH
   •  Eset: IRC/SdBot

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

Side effects:
   • Lowers security settings
   • Downloads malicious files
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following locations:
   • %WINDIR%\infocard.exe
   • %WINDIR%\infocard.exb

It deletes the initially executed copy of itself.

It tries to download some files:

– The location is the following:

– The location is the following:

It tries to executes the following files:

– Filename:
   • net stop MsMpSvc

– Filename:
   • net1 stop MsMpSvc

– Filename:
   • netsh firewall add allowedprogram 1.exe 1 ENABLE

– Filename:
   • "%WINDIR%\infocard.exe"

– Filename:
   • explorer.exe

– Filename:
   • %WINDIR%\infocard.exe

– Filename:
   • net stop wuauserv

– Filename:
   • net1 stop wuauserv

– Filename:
   • sc config wuauserv start= disabled

 Registry The following registry keys are added in order to run the processes after reboot:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Firewall Administrating"="%WINDIR%\infocard.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\
   • "Firewall Administrating"="%WINDIR%\infocard.exe"

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Firewall Administrating"="%WINDIR%\infocard.exe"

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

– [HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\
   • "%executed file%"="%WINDIR%\infocard.exe:*:Enabled:Firewall

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

– Yahoo Messenger

The URL then refers to a copy of the described malware. If the user downloads and executes this file the infection process will start again.

 Backdoor The following port is opened:

– url.dig**********.com on TCP port 1234

 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 Wednesday, September 15, 2010
Description updated by Petre Galan on Wednesday, September 15, 2010

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