ThreatExpert Report: Trojan.ADH, Trojan-Downloader.VBS.Agent.aaq, Trojan-Downloader.VBS.Agent

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Submission Summary:

Submission details:

Submission received: 20 September 2012, 21:11:19
Processing time: 8 min 14 sec
Submitted sample:

File MD5: 0x1BDC1C8B7D0257BD25D0B879C09606AB
File SHA-1: 0x850183E6CFB550FB8FDBF66F2A1EE73A0FE5C5DB
Filesize: 2,210,547 bytes
Alias:

Trojan.ADH [Symantec]
Trojan-Downloader.VBS.Agent.aaq [Kaspersky Lab]
Trojan-Downloader.VBS.Agent [Ikarus]

Summary of the findings:

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

Technical Details:

The new window was created, as shown below:

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Possible Security Risk

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%\20120920211123574~YingInstall-AdPicture.bmp	384,054 bytes	MD5: 0xFB8B6E8287DBAC9BC3B72F9CA60E0B79 SHA-1: 0x68C1A75B579781EA6CC704E0D51F1BD61202353B	(not available)
2	%Temp%\20120920211123574~YingInstall-Language.ini	10,524 bytes	MD5: 0x18AFCB5B6FCD01B55613A21BD3FBFF1B SHA-1: 0x4BA57CC0920E8B25C3D5471DE38DC1F8368A9FE9	(not available)
3	%Temp%\20120920211123574~YingInstall-TopFramePicture.bmp	162,054 bytes	MD5: 0x25D33A2C75577D4EA37945048CE49FDD SHA-1: 0x072A6E5BE73C6079F9718BEB5AD9A1546C0B98CB	(not available)
4	%Temp%\20120920211123574~YingInstall-WelcomeWndPicture.bmp	115,254 bytes	MD5: 0x0C0F781A544C6F25D3E29141D461D726 SHA-1: 0xC57966A51C7A083F9FB9D3952FB0BC5D90BB4B0B	(not available)
5	%Temp%\YingInstall20120920211123574.xml	12,389 bytes	MD5: 0xDE321550E2CF0BFBAA419E4484B1DA4B SHA-1: 0x3FB5BA5D8F4C445953719A19EF00900895D56364	(not available)
6	[file and pathname of the sample #1]	2,210,547 bytes	MD5: 0x1BDC1C8B7D0257BD25D0B879C09606AB SHA-1: 0x850183E6CFB550FB8FDBF66F2A1EE73A0FE5C5DB	Trojan.ADH [Symantec] Trojan-Downloader.VBS.Agent.aaq [Kaspersky Lab] Trojan-Downloader.VBS.Agent [Ikarus]

Note:

%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).

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]	634,880 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\YingSoft
HKEY_LOCAL_MACHINE\SOFTWARE\YingSoft\YingInstall
HKEY_LOCAL_MACHINE\SOFTWARE\YingSoft\YingInstall\??????
HKEY_LOCAL_MACHINE\SOFTWARE\YingSoft\YingInstall\??????\???????????????????

Other details

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

China

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