RDN/Generic BackDoor!F43DF48B2019

This page shows details and results of our analysis on the malware RDN/Generic BackDoor!F43DF48B2019

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

7131 (2013-07-09)

Updated DAT

7131 (2013-07-09)

Minimum Engine

5400.1158

File Length

1064448

Description Added

2013-07-10

Description Modified

2013-07-10

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/Generic BackDoor
Length1064448 bytes
MD5f43df48b201943d133190026f92acbc9
SHA1b9073135d24e2290bd6bef4c7ca51fd2913bd85b


Other Common Detection Aliases

Company NamesDetection Names
ahnlabBackdoor/Win32.Simda
avastWin32:Malware-gen
aviraTR/Crypt.EPACK.Gen2
KasperskyBackdoor.Win32.Simda.zxx
FortiNetW32/Simda.BC!tr
MicrosoftBackdoor:Win32/Simda.A
EsetWin32/Kryptik.BFGJ
normanwinpe/Simda.RPR
SophosMal/FakeAV-JC

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


ActivitiesRisk Levels
Adds a component to or modifies the network stack.Medium
Enumerates many system files and directories.Low
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


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



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:

1A.tmp

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\SEARCHSCOPES\
  • HKEY_USERS\.DEFAULT\SOFTWARE\MICROSOFT\INTERNET EXPLORER\SEARCHSCOPES\

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\SESSION MANAGER\PENDINGFILERENAMEOPERATIONS = \??\%TEMP%\1A.tmp
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\TCPIP\PARAMETERS\INTERFACES\{2AE259D0-AEFC-43D6-A9A2-8742428A5DA1}\NAMESERVER = 8.8.8.8,[local subnet].1

The applications attempted the following network connection(s):

  • 74.82.216.*:80
  • 65.98.83.***:80
  • hxxp://update.53o545bjobi.com/*****

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