ThreatExpert Report: W32.Koobface.D

Submission Summary:

Submission details:

Submission received: 7 November 2009, 06:52:51
Processing time: 7 min 47 sec
Submitted sample:

File MD5: 0x0623156B4167FD3096A072A898221DFE
File SHA-1: 0xAC807F3C8C3C5C947BE83380980CCE3AA8F3A54D
Filesize: 8,192 bytes
Alias: W32.Koobface.D [Symantec]

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
Net-Worm.Koobface	Net-Worm.Koobface is a network-aware worm that attempts to replicate across the existing network(s) and also can be used to hijack certain aspects of users' web browser functionality (such as homepage, search page, and security settings).

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	c:\googlereader.bat	133 bytes	MD5: 0x479C93A7D43945A3AF1139192204AF66 SHA-1: 0x21F54DEE26D880FBA988E945A5BD9B33F68AD5AD	(not available)
2	[file and pathname of the sample #1]	8,192 bytes	MD5: 0x0623156B4167FD3096A072A898221DFE SHA-1: 0xAC807F3C8C3C5C947BE83380980CCE3AA8F3A54D	W32.Koobface.D [Symantec]

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
iexplore.exe	%ProgramFiles%\Internet Explorer\iexplore.exe	102,400 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	28,672 bytes

Note:

%ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.

Other details

To mark the presence in the system, the following Mutex objects were created:

_!SHMSFTHISTORY!_
_SHuassist.mtx

The following Host Name was requested from a host database:

capthcabreak.com

The following Internet Connection was established:

Server Name	Server Port	Connect as User	Connection Password
www.google.com	80	(null)	(null)

The following GET requests were made:

accounts/Logout
accounts/index.jpg
reader/view/
reader/view/index.jpg

The following HTTP URLs were started reading:

http://capthcabreak.com/reader/?a=get&ver=10
http://uuviet.toila.net/.sys/?action=rssgen&v=1

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