BackDoor-CEP!bf3!672F​1A5E9A90

This page shows details and results of our analysis on the malware BackDoor-CEP!bf3!672F1A5E9A90

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

877568

Description Added

2012-04-15

Description Modified

2012-04-15

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionBackDoor-CEP!bf3
Length877568 bytes
MD5672f1a5e9a908c5c93feb60bab431c1c
SHA10f046f225eab1e160cdc958f8c9e44b3821d130a


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareTrojan.SuspectCRC!IK
avastWin32:Malware-gen
AVG (GriSoft)Dropper.Generic5.APLE (Trojan horse)
KasperskyPacked.Multi.MultiPacked.gen
BitDefenderMemScan:Trojan.Generic.7249921
eSafe (Alladin)Trojan/Worm
FortiNetW32/VBInjector.W!tr
Microsoftbackdoor:win32/bifrose.ae
SymantecTrojan.Gen.2
EsetWin32/Injector.MGK trojan (variant)
normanW32/VBDrop.AY
pandaBck/Bifrost.gen
risingTrojan.Win32.Generic.12B81D0D
Trend MicroTROJ_GEN.R44C8CT
vba32Malware-Cryptor.VB.gen.7

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
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaBackDoor-CEP!bf3
McAfee SupportedBackDoor-CEP!bf3



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:

0f046f225eab1e160cdc958f8c9e44b3821d130a

The following files have been added to the system:

  • %TEMP%\utt11.tmp.old
  • %TEMP%\IXP000.TMP\uTorrent.exe
  • %TEMP%\utt11.tmp
  • %TEMP%\IXP000.TMP\KASPER~1.EXE
  • %APPDATA%\uTorrent\settings.dat
  • %APPDATA%\Microsoft\Crypto\RSA\S-1-5-21-1482476501-[private subnet]522115-500\a18ca4003deb042bbee7a40f15
  • %APPDATA%\Microsoft\Crypto\RSA\S-1-5-21-1482476501-[private subnet]522115-500\1f91d2d17ea675d4c2c3192e24
  • %TEMP%\IXP000.TMP\TMP4351$.TMP

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

  • %TEMP%\utt12.tmp
  • %TEMP%\utt13.tmp.2413.tmp
  • %TEMP%\utt13.tmp
  • %TEMP%\utt12.tmp.2413.tmp

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\CLASSES\FALCONBETAACCOUNT\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\FALCONBETAACCOUNT\REMOTE_ACCESS_CLIENT_ID = 0994339715
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUNONCE\WEXTRACT_CLEANUP0 = rundll32.exe %WINDIR%\SYSTEM32\advpack.dll,DelNodeRunDLL32 "%TEMP%\IXP000.TMP\"

The applications attempted the following network connection(s):

  • hxxp://update.utorrent.com/*****
  • 68.142.93.***:80
  • 67.215.246.***:80

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