RDN/Generic.bfr!dh!6E​F8B4159105

This page shows details and results of our analysis on the malware RDN/Generic.bfr!dh!6EF8B4159105

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

213086

Description Added

2013-04-29

Description Modified

2013-04-29

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionRDN/Generic.bfr!dh
Length213086 bytes
MD56ef8b41591055c496ff41e7793d4dbf9
SHA1c1e620709ad015968a93fcd1afb69aa53c2a3184


Other Common Detection Aliases

Company NamesDetection Names
ahnlabTrojan/Win32.Inject
avastWin32:Malware-gen
AVG (GriSoft)SHeur2.ADOK (Trojan horse)
aviraTR/Crypt.ULPM.Gen
BitDefenderTrojan.Dropper.TAO
clamavPUA.Win32.Packer.Upx-28
Dr.WebWin32.HLLW.Autoruner.20575
F-ProtW32/Swimnag.A.gen!Eldorado
Microsoftworm:win32/swimnag.gen!a [generic]
EsetWin32/AutoRun.Agent.MG worm (variant)
normanAutoRun.CHPN
pandaGeneric Malware
risingWorm.Swimnag!2ED0
vba32Worm.Logus

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


ActivitiesRisk Levels
Attempts to write to a memory location of a Windows system processHigh
Attempts to write to a memory location where winlogon residesHigh
Attempts to load and execute remote code in a previously loaded processMedium
Adds or modifies winlogon shell registry value. Could be used to launch a program on startup.Medium
Attempts to launch an instance of Internet Explorer.Low
Enumerates many system files and directories.Low
Enumerates process listLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaRDN/Generic.bfr!dh
McAfee SupportedRDN/Generic.bfr!dh



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:

C1E620709AD015968A93FCD1AFB69AA53C2A3184

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

  • %TEMP%\2ec26d831c7753a240bbc28473257f8e.bat
  • %WINDIR%\SYSTEM32\ceefcaccafcf.dll

The following registry elements have been created:

  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\MAIN\WINDOW_PLACEMENT = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\TOOLBAR\LOCKED = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\BLUD
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\ASYNCHRONOUS = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\DLLNAME = %WINDIR%\SYSTEM32\ceefcaccafcf.dll
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\IMPERSONATE = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\LOCK = lck
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\LOGOFF = lf
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\LOGON = 108
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\SHUTDOWN = sd
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\STARTSCREENSAVER = sss
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\STARTSHELL = ss
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\STARTUP = sup
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\STOPSCREENSAVER = stsss
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\CEEFCACCAFCF\UNLOCK = 117

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