RDN/Generic Dropper!6968C3FBB2CF

This page shows details and results of our analysis on the malware RDN/Generic Dropper!6968C3FBB2CF

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 Engine

5600.1067

File Length

2629632

Description Added

2013-10-30

Description Modified

2013-10-30

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/Generic Dropper
Length2629632 bytes
MD56968c3fbb2cf38339ddb39d37b60d9af
SHA17422fb7393d032973ecf47fcb3b19c74ac157fd4


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareGen:Variant.Barys.3152 (B)
ahnlabTrojan/Win32.Agent
avastMSIL:Dropper-ZW [Cryp]
AVG (GriSoft)Dropper.Msil.CQ
BitDefenderGen:Variant.Barys.3152
Dr.WebTrojan.MulDrop4.55815
F-ProtW32/MSIL_Troj.CE.gen!Eldorado
FortiNetMSIL/Dropper.XXX!tr
SymantecSuspicious.Cloud.2
EsetMSIL/TrojanDropper.Agent.ABD

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 BetaRDN/Generic Dropper
McAfee SupportedRDN/Generic 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:

7422FB7393D032973ECF47FCB3B19C74AC157FD4

The following files have been added to the system:

  • %TEMP%\4D58C.dmp
  • %TEMP%\eWVcX.resources
  • %TEMP%\MSNPSharp.dll
  • %TEMP%\2khzs31n.0.vb
  • %TEMP%\2khzs31n.out
  • %TEMP%\2khzs31n.tmp
  • %TEMP%\svchost.exe
  • %USERPROFILE%\Local Settings\Application Data\Start\update.exe
  • %TEMP%\2khzs31n.cmdline
  • %TEMP%\WER1A.tmp.dir00\appcompat.txt
  • %TEMP%\OdCqw.resources
  • %TEMP%\2khzs31n.err
  • %TEMP%\83aEH0B0.resources
  • %TEMP%\l.resources
  • %TEMP%\whatdafock.txt
  • %TEMP%\WER1A.tmp
  • %TEMP%\update.exe

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

  • %TEMP%\vbc1D.tmp
  • %TEMP%\5t2u-owr.tmp
  • %TEMP%\5t2u-owr.exe
  • %TEMP%\5t2u-owr.cmdline
  • %TEMP%\RES1E.tmp
  • %TEMP%\5t2u-owr.out
  • %TEMP%\RES1C.tmp
  • %TEMP%\5t2u-owr.0.vb
  • %TEMP%\vbc1B.tmp
  • %USERPROFILE%\Local Settings\Application Data\Start\update_backup.exe
  • %TEMP%\5t2u-owr.err

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\HIDDEN = 2
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\HIDEFILEEXT = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\SHOWSUPERHIDDEN = 0
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\WEBVIEWBARRICADE = 0
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\USER SHELL FOLDERS\STARTUP = %USERPROFILE%\Local Settings\Application Data\Start

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