ThreatExpert Report

Submission Summary:

Submission details:

Submission received: 26 July 2008, 10:24:28
Processing time: 3 min 30 sec
Submitted sample:

File MD5: 0x6C28EC1BE8DB9E285E54E57F3E187B10
File SHA-1: 0x1D6B5E4F1025B39B976A6581B56ACC3705DF33A1
Filesize: 80,896 bytes

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Creates a startup registry entry.

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash
1	%ProgramFiles%\Microsoft Studio Files\ftnn987.ko	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709
2	%ProgramFiles%\Microsoft Studio Files\lsass.exe [file and pathname of the sample #1]	80,896 bytes	MD5: 0x6C28EC1BE8DB9E285E54E57F3E187B10 SHA-1: 0x1D6B5E4F1025B39B976A6581B56ACC3705DF33A1
3	%ProgramFiles%\Microsoft Studio Files\vcdg.bat	144 bytes	MD5: 0x94E629358BFF2AFB26B2BF64E9C3F0A9 SHA-1: 0xA80BC8D0A7952378BE4A188DABA6A52EB40DD5C4

Note:

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

The following directory was created:

%ProgramFiles%\Microsoft Studio Files

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
lsass.exe	%ProgramFiles%\microsoft studio files\lsass.exe	98,304 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	98,304 bytes

Registry Modifications

The newly created Registry Value is:

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

lsass = "%ProgramFiles%\Microsoft Studio Files\lsass.exe"

so that lsass.exe runs every time Windows starts

Other details

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

http://www.google.com.br
http://www.yahoo.com
http://www.globo.com
http://www.msn.com
http://www.terra.com.br

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