ThreatExpert Report: Adware-TryMedia, AdWare.Trymedia, Win-Trojan/Trymedia.214016

Submission Summary:

Submission details:

Submission received: 27 August 2009, 11:44:15
Processing time: 10 min 30 sec
Submitted sample:

File MD5: 0x2F08318E2ED025F4C9341FFECDC9BABC
File SHA-1: 0x650E80953FD90E16683B63025D21616DFDF7C24E
Filesize: 212,992 bytes
Alias:

Summary of the findings:

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

Technical Details:

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File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	c:\Downloads\MallTycoon2Setup.exe.partial	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
2	[file and pathname of the sample #1]	212,992 bytes	MD5: 0x2F08318E2ED025F4C9341FFECDC9BABC SHA-1: 0x650E80953FD90E16683B63025D21616DFDF7C24E	Adware-TryMedia [McAfee] AdWare.Trymedia [Ikarus] Win-Trojan/Trymedia.214016 [AhnLab]

The following directory was created:

c:\Downloads

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]	233,472 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_CURRENT_USER\Software\Trymedia Systems
HKEY_CURRENT_USER\Software\Trymedia Systems\Download Manager
HKEY_CURRENT_USER\Software\Trymedia Systems\Download Manager\NQNxe8HOtQE4R2cK6fqLwBk8EpY=

The newly created Registry Values are:

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

MallTycoon2Setup.exe = "[file and pathname of the sample #1] /r"

so that [file and pathname of the sample #1] runs every time Windows starts

[HKEY_CURRENT_USER\Software\Trymedia Systems\Download Manager\NQNxe8HOtQE4R2cK6fqLwBk8EpY=]

Reboots = "0"
Resumes = "0"
DownloadFolder = "C:\Downloads"
LastError = "'2'"

Other details

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

Mall Tycoon 2

The following Host Name was requested from a host database:

d.trymedia.com

The following Internet Connection was established:

Server Name	Server Port	Connect as User	Connection Password
d.trymedia.com	80	(null)	(null)

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

http://d.trymedia.com/dd/take2/60m_d/t___po_X/MallTycoon2Setup.exe

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