RDN/BackDoor-FBSA!a!2​505AAC699FC

This page shows details and results of our analysis on the malware RDN/BackDoor-FBSA!a!2505AAC699FC

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

7394 (2014-03-31)

Updated DAT

7394 (2014-03-31)

Minimum Engine

5600.1067

File Length

912896

Description Added

2014-03-31

Description Modified

2014-03-31

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/BackDoor-FBSA!a
Length912896 bytes
MD52505aac699fc442ee457d8419b070ad3
SHA11c8f1b29d867fc9f771de06df2a91641ca052014


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareTrojan.Agent.BCKM (B)
ahnlabTrojan/Win32.Simda
avastWin32:Dropper-gen
aviraTR/Simda.A.37
KasperskyBackdoor.Win32.Simda.acjw
BitDefenderTrojan.Agent.bckm
Dr.WebAdware.Downware.2419
FortiNetW32/Kryptik.BJEN!tr
MicrosoftBackdoor:Win32/Simda.AT
EsetWin32/Simda.B
pandaTrj/CI.A

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


ActivitiesRisk Levels
Attempts to modify the hosts file. This could be used to map hostnames different IP addresses redirecting traffic to an alternate location.High
Uses the Ipconfig commandMedium
Adds a component to or modifies the network stack.Medium
Enumerates many system files and directories.Low
Enumerates process listLow
Attempts to send data or commands via HTTPLow
Process attempts to call itself recursivelyLow
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaRDN/BackDoor-FBSA!a
McAfee SupportedRDN/BackDoor-FBSA!a



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 files have been added to the system:

  • %TEMP%\11343-.exe
  • %WINDIR%\SYSTEM32\drivers\etc\hosts.txt
  • %TEMP%\1C8F1B29D867FC9F771DE06DF2A91641CA052014

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

  • %WINDIR%\SYSTEM32\drivers\etc\hosts

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 = 94.242.222.66,8.8.8.8,[private subnet]

The applications attempted the following network connection(s):

  • 79.142.66.***:80
  • 5.149.248.**:80
  • hxxp://report.wsk5ywsk5y5c5s5.com/
  • 204.79.197.***:80
  • hxxp://5.149.248.85/*****

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