RDN/Generic Downloader.x!in!A3936​6D72B35

This page shows details and results of our analysis on the malware RDN/Generic Downloader.x!in!A39366D72B35

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

7211 (2013-09-27)

Updated DAT

7211 (2013-09-27)

Minimum Engine

5600.1067

File Length

65726

Description Added

2013-09-29

Description Modified

2013-09-29

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/Generic Downloader.x!in
Length65726 bytes
MD5a39366d72b3534ae25ef4f9035ecad1c
SHA16a20ccff0e34164fc4bd170f044411d269ca47b8


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareTrojan.Downloader.JQAQ (B)
AVG (GriSoft)Win32/DH{AUw}
KasperskyTrojan-Downloader.Win32.Genome.epgn
BitDefenderTrojan.Downloader.JQAQ
Dr.WebTrojan.KillProc.29155
FortiNetW32/Genome.A!tr.dldr
MicrosoftTrojanDownloader:Win32/Muzat.A
SymantecSecurityRisk.Dropper
EsetWin32/ChatZum.A application
normanwin32/SB/Downloader
SophosTroj/Agent-ADIL
vba32TrojanDownloader.Genome

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


ActivitiesRisk Levels
Adds or modifies system policies. Could be used to prevent the or detour the use of common system tools.High
Enumerates many system files and directories.Low
Attempts to terminate an instance of the Windows file system explorer.Low
Adds or modifies Internet Explorer cookiesLow


McAfee ScansScan Detections
McAfee BetaRDN/Generic Downloader.x!in
McAfee SupportedRDN/Generic Downloader.x!in



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:

6A20CCFF0E34164FC4BD170F044411D269CA47B8

The following files have been added to the system:

  • %WINDIR%\Tasks\0.job
  • %TEMP%\nsi9.tmp\nsProcess.dll
  • %PROGRAMFILES%\wrapper_inst\service.exe

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

  • %PROGRAMFILES%\wrapper_inst\install32.xml
  • %TEMP%\nsl33.tmp\browser_detect.htm
  • %TEMP%\nse31.tmp\browser_detect.htm
  • %TEMP%\nsc8.tmp
  • %TEMP%\nse30.tmp
  • %TEMP%\nsi9.tmp
  • %TEMP%\nse31.tmp\System.dll
  • %TEMP%\rpt.txt
  • %TEMP%\nsi9.tmp\System.dll
  • %TEMP%\nse31.tmp
  • %TEMP%\nse31.tmp\inetc.dll
  • %TEMP%\nsi9.tmp\inetc.dll
  • %TEMP%\nsl32.tmp
  • %PROGRAMFILES%\wrapper_inst\install_service.xml
  • %TEMP%\nsl33.tmp\System.dll
  • %PROGRAMFILES%\wrapper_inst\installXP.xml
  • %TEMP%\rpt.txt
  • %TEMP%\nsl33.tmp
  • %PROGRAMFILES%\wrapper_inst\install64.xml
  • %TEMP%\nsl33.tmp\inetc.dll

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\CONSENTPROMPTBEHAVIORADMIN = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\CONSENTPROMPTBEHAVIORUSER = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\ENABLELUA = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\0 = %PROGRAMFILES%\wrapper_inst\service.exe
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\SESSION MANAGER\PENDINGFILERENAMEOPERATIONS = \??\%TEMP%\nsi9.tmp\nsProcess.dll
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\WINDOWS\NOINTERACTIVESERVICES = 0

The applications attempted the following network connection(s):

  • 107.20.135.**:80
  • hxxp://www.chatzum.com/report/*****

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