Generic Downloader.x!69FA1CEA​0387

This page shows details and results of our analysis on the malware Generic Downloader.x!69FA1CEA0387

Overview

This is a Trojan detection. Unlike viruses, Trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include e-mail, malicious or hacked Web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.


Minimum DAT

7299 (2013-12-24)

Updated DAT

7299 (2013-12-24)

Minimum Engine

5600.1067

File Length

219136

Description Added

2013-12-25

Description Modified

2013-12-25

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionGeneric Downloader.x
Length219136 bytes
MD569fa1cea03875db42277b0d4891a5f5b
SHA194830bd660d947ba336810e172100e7672b8e0b6


Other Common Detection Aliases

Company NamesDetection Names
aviraTR/Crypt.EPACK.Gen2
Dr.WebBackDoor.Darkshell.246
Microsofttrojandownloader:win32/small.gen!z
normanwin32/SB/FileInfector
SophosMal/EncPk-ACE
vba32BackDoor.Agent

Other brands and names may be claimed as the property of others.


ActivitiesRisk Levels
Process attempts to call itself recursivelyLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaGeneric Downloader.x
McAfee SupportedGeneric Downloader.x



System Changes

Some path values have been replaced with environment variables as the exact location may vary with different configurations.
e.g.
%WINDIR% = \WINDOWS (Windows 9x/ME/XP/Vista/7), \WINNT (Windows NT/2000)
%PROGRAMFILES% = \Program Files


The following files were analyzed:

94830BD660D947BA3368[private subnet]2B8E0B6

The following files have been added to the system:

  • %WINDIR%\SYSTEM32\c_31892.nls

The following files have been changed:

  • c:\Users exe File.exe
  • %PROGRAMFILES%\msn\msncorefiles\msn6.exe
  • %PROGRAMFILES%\Adobe\Reader 9.0\Reader\LogTransport2.exe
  • %PROGRAMFILES%\msn\msncorefiles\copymar.exe
  • %PROGRAMFILES%\msn\msncorefiles\update.exe
  • c:\Users exe File.exe
  • %PROGRAMFILES%\msn\msncorefiles\setup\msnunin.exe
  • c:\Users exe File.exe

The following files were temporarily written to disk then later removed:

  • %TEMP%\31ff15e0.exe
  • %TEMP%\206f4056.bat
  • %TEMP%\rKtwCx.exe

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\TOWODO SOFTWARE\
  • HKEY_CURRENT_USER\SOFTWARE\TOWODO SOFTWARE\VIRTUAL DRIVE MANAGER\
  • HKEY_CURRENT_USER\SOFTWARE\TOWODO SOFTWARE\VIRTUAL DRIVE MANAGER\INIT\
  • HKEY_CURRENT_USER\SOFTWARE\TOWODO SOFTWARE\VIRTUAL DRIVE MANAGER\SETTINGS\
  • HKEY_LOCAL_MACHINE\SOFTWARE\GTPLUS\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\TOWODO SOFTWARE\VIRTUAL DRIVE MANAGER\INIT\HORIZPOS = 123
  • HKEY_CURRENT_USER\SOFTWARE\TOWODO SOFTWARE\VIRTUAL DRIVE MANAGER\INIT\HORIZSIZE = 778
  • HKEY_CURRENT_USER\SOFTWARE\TOWODO SOFTWARE\VIRTUAL DRIVE MANAGER\INIT\VERTPOS = 199
  • HKEY_CURRENT_USER\SOFTWARE\TOWODO SOFTWARE\VIRTUAL DRIVE MANAGER\INIT\VERTSIZE = 342
  • HKEY_CURRENT_USER\SOFTWARE\TOWODO SOFTWARE\VIRTUAL DRIVE MANAGER\SETTINGS\LASTMOUNTS
  • HKEY_LOCAL_MACHINE\SOFTWARE\GTPLUS\TIME = [binary data]

Symptoms

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Method of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, e-mail, etc.

Removal

Please use the following instructions for all supported versions of Windows:


1. Disable Windows System Restore. For instructions, please refer to: http://www.mcafee.com/us/downloads/free-tools/disabling-system-restore.aspx

2. Update your McAfee Anti-Virus product to the latest version (when possible), and ensure the latest DAT and Engine and any applicable EXTRA.DATs are installed.

3. Run a full system scan. (On-Demand Scan)

4. Reboot, as soon as it is convenient, to ensure all malicious components are removed.

Variants