ThreatExpert Report: Win32.Dzan.A, Trojan.Win32.Disabler.i, Generic.dx, TROJ

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Submission Summary:

Submission details:

Submission received: 1 June 2008, 19:32:32
Processing time: 3 min 27 sec
Submitted sample:

File MD5: 0x9652BF14E5F57C791E4B07B3C52D3F3F
File SHA-1: 0xACD3539DEF98379183D0AF7A3993A9CB6C18873D
Filesize: 60,545 bytes
Alias:

Win32.Dzan.A [PCTools]
Trojan.Win32.Disabler.i [Kaspersky Lab]
Generic.dx [McAfee]
TROJ_DISABLER.AD [Trend Micro]

Summary of the findings:

What's been found	Severity Level
Creates a startup registry entry.
Contains characteristics of an identified security risk.

Technical Details:

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 file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Programs%\Startup\systemID.pif %System%\Flashy.exe [file and pathname of the sample #1]	60,545 bytes	MD5: 0x9652BF14E5F57C791E4B07B3C52D3F3F SHA-1: 0xACD3539DEF98379183D0AF7A3993A9CB6C18873D	Win32.Dzan.A [PCTools] Trojan.Win32.Disabler.i [Kaspersky Lab] Generic.dx [McAfee] TROJ_DISABLER.AD [Trend Micro]

Notes:

%Programs% is a variable that refers to the file system directory that contains the user's program groups. A typical path is C:\Documents and Settings\[UserName]\Start Menu\Programs.
%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 were new processes created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	139,264 bytes
Flashy.exe	%System%\flashy.exe	139,264 bytes

Registry Modifications

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]

Flashy Bot = "%System%\Flashy.exe"

so that Flashy.exe runs every time Windows starts

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]

NoFolderOptions = 0x00000002

Other details

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

Thailand

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