ThreatExpert Report: Trojan.Win32.Agent.cnkh, Mal/Generic-A, Trojan-Downloader.Win32.Ufraie

Submission Summary:

Submission details:

Submission received: 30 June 2009, 02:50:23
Processing time: 10 min 19 sec
Submitted sample:

File MD5: 0xC7D14E28464B4C5306FA479671A14B86
File SHA-1: 0x1B5701155DD6C5FE1040DF9535803E3B85E5D0C2
Filesize: 29,696 bytes
Alias:

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! Characteristics of the following security risk was identified in the system:

Security Risk	Description
Trojan-Downloader.Agent.BKA	Trojan.Downloader.Agent.BKA opens random port and contacts remote servers to downloads random malware onto infected computers.

Attention! The following threat category was identified:

Threat Category	Description
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\uninst004c0fa.bat	59 bytes	MD5: 0x2988B921FBED03F9C93C5D538932BBE3 SHA-1: 0x4B791B3D59AE76FF091C2CF201B40F5D1B432A3F	(not available)
2	%System%\kr_done1	10 bytes	MD5: 0x79FF72C21853D80F9D7CBD50E9C2879C SHA-1: 0xFBA7E90617BB5398D44065420EF780B18FFEE8B6	(not available)
3	[file and pathname of the sample #1]	29,696 bytes	MD5: 0xC7D14E28464B4C5306FA479671A14B86 SHA-1: 0x1B5701155DD6C5FE1040DF9535803E3B85E5D0C2	Trojan.Win32.Agent.cnkh [Kaspersky Lab] Mal/Generic-A [Sophos] Trojan-Downloader.Win32.Ufraie [Ikarus]

Notes:

%Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).
%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).

Memory Modifications

There was a new process created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	1,114,112 bytes

Registry Modifications

The newly created Registry Value is:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft]

kr_done1 = 0x4A49EE0A

Other details

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

dsfjh48uf34

The data identified by the following URL was then requested from the remote web server:

http://traff.loadd.in/t/d2hsdWF3OzJ0OHY5Oj0,cyJtIG8kaUVyam9zeHk9Tn5DSgIRAkxDUU1bFx0CHQAdCQECHQYEDgdEDwgCDA0QDXF5cmUlM3tvJjwmJ2VrPC4jbGN1MiA1PGVpfC4yNC9iUUcDAAcKEwkcVA8TXF1c/count.htm

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