Generic Dropper!FF131AD8D32B

This page shows details and results of our analysis on the malware Generic Dropper!FF131AD8D32B

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

7367 (2014-03-04)

Updated DAT

7367 (2014-03-04)

Minimum Engine

5600.1067

File Length

2457600

Description Added

2014-03-05

Description Modified

2014-03-05

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionGeneric Dropper
Length2457600 bytes
MD5ff131ad8d32bb59a5accc95ff699a470
SHA17b59220801c2b8709f4805e0359eb1d969456508


Other Common Detection Aliases

Company NamesDetection Names
ahnlabTrojan/Win32.Agent
avastMSIL:Dropper-ZW
AVG (GriSoft)Dropper.Msil.CQ (Trojan horse)
aviraTR/Dropper.MSIL.16600
KasperskyTrojan.MSIL.Agent.czeb
BitDefenderGen:Heur.MSIL.Krypt.2
FortiNetMSIL/Dropper.XXX!tr
EsetMSIL/TrojanDropper.Agent.ABD
normanBarys.G
SophosTroj/MSIL-KW
vba32TScope.Trojan.MSIL
V-BusterTrojan.Agent!oz4ygWV4zqM (trojan)

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


ActivitiesRisk Levels
Enumerates many system files and directories.Low
Process attempts to call itself recursivelyLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaGeneric Dropper
McAfee SupportedGeneric Dropper



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:

7B59220801C2B8709F4805E0359EB1D969456508

The following files have been added to the system:

  • %USERPROFILE%\Start Menu\Programs\Startup\svchost.exe
  • %WINDIR%\system\suchost..exe
  • %TEMP%\svchost.exe
  • %TEMP%\MSNPSharp.dll
  • %TEMP%\svchost..exe
  • %TEMP%\n667h.resources
  • %USERPROFILE%\Local Settings\Application Data\GDIPFONTCACHEV1.DAT
  • %TEMP%\tRSc.resources

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

  • %TEMP%\cdt-y8xm.out
  • %TEMP%\cdt-y8xm.exe
  • %TEMP%\vbc1A.tmp
  • %TEMP%\cdt-y8xm.cmdline
  • %TEMP%\RES1B.tmp
  • %TEMP%\cdt-y8xm.err
  • %TEMP%\cdt-y8xm.tmp
  • %TEMP%\cdt-y8xm.0.vb

The applications attempted the following network connection(s):

  • 178.33.169.**:80
  • 178.33.169.**:80 (irc) : NICK [USA][XP][x86][%COMPUTERNAME%]6417
  • 178.33.169.**:80 (irc) : USER foo dashitZ ohmygad :Botty Shitty Stormy

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