RDN/Generic BackDoor!sf!B8C76615A​0B1

This page shows details and results of our analysis on the malware RDN/Generic BackDoor!sf!B8C76615A0B1

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

7146 (2013-07-24)

Updated DAT

7146 (2013-07-24)

Minimum Engine

5400.1158

File Length

45056

Description Added

2013-07-25

Description Modified

2013-07-25

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/Generic BackDoor!sf
Length45056 bytes
MD5b8c76615a0b1073c3cd0926b7ac7279c
SHA181558de76b2a5cfb37eb40aca0d27a67e004cf92


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareGen:Variant.Barys.8259 (B)
avastWin32:Malware-gen
AVG (GriSoft)PSW.ILSpy
aviraTR/Spy.Gen5
BitDefenderGen:Variant.Barys.8259
Dr.WebTrojan.DownLoader6.64049
FortiNetMSIL/Agent.MNB!tr
MicrosoftBackdoor:MSIL/Bladabindi.B
EsetMSIL/Bladabindi.F
normanwinpe/Troj_Generic.MYCMJ
pandaGeneric Malware
risingBackdoor.Bot!4E4F
Trend MicroTROJ_GEN.R047H01GH13
vba32Trojan.MSIL.Zapchast

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
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaRDN/Generic BackDoor!sf
McAfee SupportedRDN/Generic BackDoor!sf



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:

81558DE76B2A5CFB37EB40ACA0D27A67E004CF92

The following files have been added to the system:

  • %TEMP%\Trojan.exe
  • %TEMP%\Trojan.exe.tmp
  • C:\! My Picutre.SCR
  • %USERPROFILE%\Start Menu\Programs\Startup\5cd8f17f4086744065eb0992a09e05a2.exe

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\5CD8F17F4086744065EB0992A09E05A2\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\ENVIRONMENT\SEE_MASK_NOZONECHECKS = 49
  • HKEY_CURRENT_USER\SOFTWARE\5CD8F17F4086744065EB0992A09E05A2\US = 64
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\5CD8F17F4086744065EB0992A09E05A2 = "%TEMP%\Trojan.exe" ..
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\5CD8F17F4086744065EB0992A09E05A2 = "%TEMP%\Trojan.exe" ..

The applications attempted the following network connection(s):

  • 41.107.94.***:1177

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

All Users:

Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:

1.Disable System Restore .

2.Update to current engine and DAT files for detection and removal.

3.Run a complete system scan.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

1. Please go to the Microsoft Recovery Console and restore a clean MBR.

On windows XP:

Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.


On Windows Vista and 7:

Insert the Windows CD into the CD-ROM drive and restart the computer.
Click on "Repair Your Computer"
When the System Recovery Options dialog comes up, choose the Command Prompt.
Issue 'bootrec /fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.

Variants