ThreatExpert Report: Mal/VBCheMan-C, Mal/VBCheMan-C, Trojan.Win32.Vilsel

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Submission Summary:

Submission details:

Submission received: 2 October 2012, 07:30:01
Processing time: 9 min 3 sec
Submitted sample:

File MD5: 0xC483BFFC879233D99BA52F05FD100872
File SHA-1: 0x20AC4AFB7FEA3C7CB8855CA5E6BDF083D82D2E8B
Filesize: 389,120 bytes
Alias:

Mal/VBCheMan-C, Mal/VBCheMan-C [Sophos]
Trojan.Win32.Vilsel [Ikarus]

Summary of the findings:

What's been found	Severity Level
Communication with a remote IRC server.
Creates a startup registry entry.

Technical Details:

File System Modifications

The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%AppData%\Scxaxs.exe [file and pathname of the sample #1]	389,120 bytes	MD5: 0xC483BFFC879233D99BA52F05FD100872 SHA-1: 0x20AC4AFB7FEA3C7CB8855CA5E6BDF083D82D2E8B	Mal/VBCheMan-C, Mal/VBCheMan-C [Sophos] Trojan.Win32.Vilsel [Ikarus]

Note:

%AppData% is a variable that refers to the file system directory that serves as a common repository for application-specific data. A typical path is C:\Documents and Settings\[UserName]\Application Data.

Memory Modifications

There were new memory pages created in the address space of the system process(es):

Process Name	Process Filename	Allocated Size
services.exe	%System%\services.exe	319,488 bytes
svchost.exe	%System%\svchost.exe	319,488 bytes
svchost.exe	%System%\svchost.exe	319,488 bytes
svchost.exe	%System%\svchost.exe	319,488 bytes
svchost.exe	%System%\svchost.exe	319,488 bytes
svchost.exe	%System%\svchost.exe	319,488 bytes
alg.exe	%System%\alg.exe	319,488 bytes

Notes:

%System% is a variable that refers to the System folder. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

Registry Modifications

The newly created Registry Value is:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]

Scxaxs = "%AppData%\Scxaxs.exe"

so that Scxaxs.exe runs every time Windows starts

Other details

Analysis of the file resources indicate the following possible country of origin:

Pakistan

To mark the presence in the system, the following Mutex object was created:

e621ca05-Mutex

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