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Virus Profile: Downloader.gen.a!808C57FAB160

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 12/19/2013
Date Added: 12/19/2013
Origin: Unknown
Length: 450560
Type: Trojan
Subtype: Generic
DAT Required: 7293
Removal Instructions
   
 
 
   

Description

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.

Indication of Infection

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

Methods 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.

   

Virus Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionDownloader.gen.a
Length450560 bytes
MD5808c57fab160bc895bb7239db374a68e
SHA10c2fda7b3a09a98dace340cedfbf69275ba77137


Other Common Detection Aliases

Company NamesDetection Names
AVG (GriSoft)Win32/DH{ADUeeSVXTmQBNg}
aviraTR/Crypt.EPACK.Gen2
KasperskyVirus.Win32.Suspic.gen
BitDefenderGen:Win32.FileInfector.Bu0baWSAtfgj
clamavPUA.Win32.Packer.Asprotect-2
Dr.WebBackDoor.Darkshell.246
Microsofttrojandownloader:win32/small.gen!z
EsetNewHeur_PE
normanSB/NetworkWorm
risingWin32.Roue.a
SophosMal/EncPk-ACE
vba32Heur.Trojan.Hlux

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 BetaDownloader.gen.a
McAfee SupportedDownloader.gen.a



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:

0C2FDA7B3A09A98DACE340CEDFBF69275BA77137

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

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

  • %TEMP%\7c7d37f3.bat
  • %TEMP%\wLsZZO.exe
  • %TEMP%\16ec7222.exe

The following registry elements have been created:

  • HKEY_LOCAL_MACHINE\SOFTWARE\GTPLUS\

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SOFTWARE\GTPLUS\TIME = [binary data]

   

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.