RDN/Downloader.a!sq!7​E0D8C6D8251

This page shows details and results of our analysis on the malware RDN/Downloader.a!sq!7E0D8C6D8251

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

961360

Description Added

2014-08-20

Description Modified

2014-08-20

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/Downloader.a!sq
Length961360 bytes
MD57e0d8c6d82518feeb073d3929c6f6255
SHA189fd9c2be65be41ec425e4ef6305c411a3df974e


Other Common Detection Aliases

Company NamesDetection Names
aviraAPPL/Downloader.Gen
Dr.WebAdware.Downware.3982
FortiNetRiskware/DownloadSponsor
SymantecSuspicious.Cloud.2.A
EsetWin32/DownloadSponsor.A (application) (variant)
normanDownloadSponsor.M
risingMalware.XPACK-HIE/Heur!1.9C48
SophosGeneric PUA JH (PUA)
V-BusterRiskware.Agent! (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 BetaRDN/Downloader.a!sq
McAfee SupportedRDN/Downloader.a!sq



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:

89FD9C2BE65BE41EC425E4EF6305C411A3DF974E

The following files have been added to the system:

  • %TEMP%\OCS\ICSharpCode.SharpZipLib.dll
  • %USERPROFILE%\Local Settings\Application Data\GDIPFONTCACHEV1.DAT
  • %TEMP%\~DF305E.tmp
  • %TEMP%\OCS\ocs_v71b.exe
  • %TEMP%\OCS\ocojcgalocbugaop.dat

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\OCS\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\OCS\CID = 72bf1a16-9684-4fdc-b1fd-4e5e3c1be564
  • HKEY_CURRENT_USER\SOFTWARE\OCS\LASTPID = dhtechradar
  • HKEY_CURRENT_USER\SOFTWARE\OCS\PID = dhtechradar

The applications attempted the following network connection(s):

  • 88.198.27.***:443
  • 144.76.75.**:80
  • hxxp://thinklabs-ltd.de/*****

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