ThreatExpert Report: W32.Koobface!gen, Net-Worm.Win32.Koobface.cjt, Mal/FakeSpy-A..

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Submission Summary:

Submission details:

Submission received: 16 November 2009, 21:26:33
Processing time: 8 min 30 sec
Submitted sample:

File MD5: 0x95C4C6864B233DB4173C0B72781494B0
File SHA-1: 0xB43F697FB96E14424162E4AB83878F809A9045FC
Filesize: 55,808 bytes
Alias:

W32.Koobface!gen [Symantec]
Net-Worm.Win32.Koobface.cjt [Kaspersky Lab]
Mal/FakeSpy-A [Sophos]
Win-Trojan/Malware.55808.I [AhnLab]

Summary of the findings:

What's been found	Severity Level
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! The following threat category was identified:

Threat Category	Description
	A network-aware worm that attempts to replicate across the existing network(s)

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Windir%\bk23567.dat	1 bytes	MD5: 0xC81E728D9D4C2F636F067F89CC14862C SHA-1: 0xDA4B9237BACCCDF19C0760CAB7AEC4A8359010B0	(not available)
2	%Windir%\dxxdv34567.bat	173 bytes	MD5: 0x472E0C337DEC6707E44CA359AD2355C3 SHA-1: 0x49CBE52F26DAC9D20F7D59D9DC8C6847DC33430F	(not available)
3	%Windir%\freddy73.exe [file and pathname of the sample #1]	55,808 bytes	MD5: 0x95C4C6864B233DB4173C0B72781494B0 SHA-1: 0xB43F697FB96E14424162E4AB83878F809A9045FC	W32.Koobface!gen [Symantec] Net-Worm.Win32.Koobface.cjt [Kaspersky Lab] Mal/FakeSpy-A [Sophos] Win-Trojan/Malware.55808.I [AhnLab]

Note:

%Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
freddy73.exe	%Windir%\freddy73.exe	73,728 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	73,728 bytes

Other details

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

3456fsdfdsggfd5373

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