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Date discovered:24/03/2010
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Medium to high
Damage Potential:Medium to high
Static file:Yes
File size:225.280 Bytes
MD5 checksum:0f728c1187e046662148ee7021e4b3b1
VDF version:
IVDF version:

 General Aliases:
   •  Bitdefender: Trojan.Agent.APCE
   •  Panda: Bck/Oscarbot.YL
   •  Eset: Win32/Sality.NAE

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

Side effects:
   • Downloads malicious files
   • Drops malicious files
   • Registry modification

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

It deletes the initially executed copy of itself.

It deletes the following file:
   • %SYSDIR%\wmimgr32.dl_

The following files are created:

%SYSDIR%\wmimgr32.dll Further investigation pointed out that this file is malware, too. Detected as: W32/Sality.L

%SYSDIR%\wmimgr32.dl_ Further investigation pointed out that this file is malware, too. Detected as: W32/Sality.L.1

It tries to download some files:

– The location is the following:

– The locations are the following:
   • http://saeu.ego**********.com/?id607421
   • http://ngmtrl.555**********.com/?id607421
   • http://cqjri.fdp**********.com/?id607421
   • http://rkvv.bpf**********.com/?id607421
   • http://vmmucs.u7z**********.com/?id607421
   • http://searchportal.inf**********.com/?o_id=%number%&domainname=%character string%
   • http://gcst.zvc**********.com/?id607421
   • http://www.rus**********.com/
   •**********.com/?acc=%character string%&dm=%character string%

– The location is the following:

It tries to executes the following file:

– Filename:
   • %WINDIR%\syste

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

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • "Taskman"="%executed file%"

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "person"="%SYSDIR%\into.exe"

 Backdoor The following ports are opened:

–**********.com on UDP port 5051
– sam2.123**********.com on UDP port 5051

 Injection –  It injects the following file into a process: %SYSDIR%\wmimgr32.dll

    Process name:
   • explorer.exe

 File details Programming language:
The malware program was written in MS Visual C++.

Description inserted by Petre Galan on Friday, July 23, 2010
Description updated by Andrei Ivanes on Friday, July 30, 2010

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