BackDoor-FBEL!BEF5D7B​E9B3C!BEF5D7BE9B3C

This page shows details and results of our analysis on the malware BackDoor-FBEL!BEF5D7BE9B3C!BEF5D7BE9B3C

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

1244797

Description Added

2013-09-04

Description Modified

2013-09-04

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionBackDoor-FBEL!BEF5D7BE9B3C
Length1244797 bytes
MD5bef5d7be9b3ce832c1e412104b1417a2
SHA16d11db7aee5ea8666cd003b713a8f792adcf1d80


Other Common Detection Aliases

Company NamesDetection Names
ahnlabTrojan/Win32.Agent
aviraTR/Crypt.Xpack.4796
SymantecBloodhound.MalPE.B
EsetWin32/Kryptik.BJEI
pandaTrj/dtcontx.G

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


ActivitiesRisk Levels
Modifies Windows explorer file browser's Advanced settings. Sometimes used by malware to make executable files look like documents.Medium
Adds or modifies a system service.Low
Enumerates many system files and directories.Low
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaBackDoor-FBEL!BEF5D7BE9B3C
McAfee SupportedBackDoor-FBEL!BEF5D7BE9B3C



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:

6D11DB7AEE5EA8666CD003B713A8F792ADCF1D80

The following files have been added to the system:

  • %WINDIR%\SYSTEM32\wpcap.dll
  • %WINDIR%\SYSTEM32\drivers\npf.sys
  • %WINDIR%\SYSTEM32\packet.dll

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

  • %TEMP%\tmp.exe

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\NOTEPAD\DEFAULTCOMPRESSEDRECORD = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\NOTEPAD\FLAGSMODIFIEDVALID
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\NOTEPAD\RECORDMODIFIEDMAX = DFWl6sY0MIzEvmcExYfyfKOaq56RGU4awWAUpuP3IA2aaqQTG+ijI4UNf5JmCI7GQA==
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\ACTIVEMODIFIEDTHEME = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\INFOPLAYEDCURRENT
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\SIZECOMPLETEDVALID = DFWl6sY0MIzEvmcExYfyfKOaq56RGU4awWAUpuP3IA2aaqQTG+ijI4UNf5JmCI7GQA==
  • HKEY_CURRENT_USER\SOFTWARE\SYSINTERNALS\PROCESS EXPLORER\DBSAVEDUSE = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\SYSINTERNALS\PROCESS EXPLORER\LINELOADEDQUICK = DFWl6sY0MIzEvmcExYfyfKOaq56RGU4awWAUpuP3IA2aaqQTG+ijI4UNf5JmCI7GQA==
  • HKEY_CURRENT_USER\SOFTWARE\SYSINTERNALS\PROCESS EXPLORER\PERSISTENTLOCALIZEDNAME = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\SYSINTERNALS\PROCESS EXPLORER\PLATFORMCOMPRESSEDVALID
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\NETWORKNOTIFYER = %TEMP%\6D11DB7AEE5EA8666CD003B713A8F792ADCF1D80

The applications attempted the following network connection(s):

  • 77.122.136.*:80
  • 178.137.192.***:80
  • 218.1[private subnet]

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