RDN/Downloader.a!ou!7​1A5D66CA4F9

This page shows details and results of our analysis on the malware RDN/Downloader.a!ou!71A5D66CA4F9

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

7316 (2014-01-12)

Updated DAT

7316 (2014-01-12)

Minimum Engine

5600.1067

File Length

258048

Description Added

2014-01-13

Description Modified

2014-01-13

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/Downloader.a!ou
Length258048 bytes
MD571a5d66ca4f934ad50bb2c4ea3b58059
SHA17b6faa8084735d9ec9466564af17c3e2629fe1b0


Other Common Detection Aliases

Company NamesDetection Names
AVG (GriSoft)Downloader.Agent2.BSCJ (Trojan horse)
aviraTR/Dldr.Agent.hdux
KasperskyTrojan-Downloader.Win32.Agent.hdux
FortiNetW32/Agent.HDUX!tr.dldr
normanDLoader.ASETZ
pandaSuspicious

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


ActivitiesRisk Levels
Attempts to connect to a medium risk domain that may pose a minor security risk.Medium
Enumerates many system files and directories.Low
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaRDN/Downloader.a!ou
McAfee SupportedRDN/Downloader.a!ou



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:

7B6FAA8084735D9EC9466564AF17C3E2629FE1B0

The following files have been added to the system:

  • %TEMP%\WER20.tmp.dir00\appcompat.txt
  • %TEMP%\3F26F.dmp
  • %TEMP%\WER20.tmp

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

  • %TEMP%\1E.tmp
  • %TEMP%\15.tmp
  • %TEMP%\8.tmp
  • %TEMP%\1A.tmp
  • %TEMP%\1D.tmp
  • %TEMP%\1F.tmp

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\CURDAYWORD = 150433
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\TODAYBEN = 150433

The applications attempted the following network connection(s):

  • 222.238.25.***:80
  • hxxp://mainadd.com/abs/*****

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