ThreatExpert Report: Worm.Win32.Shakblades.cfo

Submission Summary:

Submission details:

Submission received: 20 July 2012, 03:10:02
Processing time: 11 min 23 sec
Submitted sample:

File MD5: 0xC5E119FAA88239C7D867C57F0866FD88
File SHA-1: 0x50C96138D4E0DD110688273FE3A078EDC0CB6364
Filesize: 651,264 bytes

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 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	%AppData%\FacebookVideoCall.exe [file and pathname of the sample #1]	651,264 bytes	MD5: 0xC5E119FAA88239C7D867C57F0866FD88 SHA-1: 0x50C96138D4E0DD110688273FE3A078EDC0CB6364	Worm.Win32.Shakblades.cfo [Kaspersky Lab]
2	%Temp%\plugtmp\chrome.exe.exe	1,140,920 bytes	MD5: 0x2C1E2BC0384BA3C12534E92223CB039F SHA-1: 0x258CBE81CB972334A28E0939B512233AB3A284E6	(not available)

Notes:

%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.
%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).

The following directory was created:

%Temp%\plugtmp

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
chrome.exe.exe	%Temp%\plugtmp\chrome.exe.exe	1,146,880 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	N/A
FacebookVideoCall.exe	%AppData%\facebookvideocall.exe	N/A

Registry Modifications

The newly created Registry Value is:

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

chrome.exe = "%AppData%\FacebookVideoCall.exe"

so that FacebookVideoCall.exe runs every time Windows starts

Other details

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

618NX26ZSB

There was application-defined hook procedure installed into the hook chain (e.g. to monitor keystrokes). The installed hook is handled by the following module:

%System%\MSVBVM60.DLL

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).

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