Generic.dx!FA831D9B7D​A4

This page shows details and results of our analysis on the malware Generic.dx!FA831D9B7DA4

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

7085 (2013-05-24)

Updated DAT

7085 (2013-05-24)

Minimum Engine

5400.1158

File Length

1121445

Description Added

2013-05-25

Description Modified

2013-05-25

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionGeneric.dx
Length1121445 bytes
MD5fa831d9b7da47bee50beebbd9393adf0
SHA10fe6158bf60b5da8c43ab723ac33bcd399e27afa


Other Common Detection Aliases

Company NamesDetection Names
avastWin32:Rootkit-gen
AVG (GriSoft)BackDoor.Generic13.BDRH (Trojan horse)
aviraTR/Dropper.Gen
KasperskyRootkit.Win32.AntiAv.bc
BitDefenderDropped:Trojan.Generic.6277872
clamavTrojan.Antiav-33
Dr.WebTrojan.PWS.Banker.60814
FortiNetW32/AntiAv.BC!tr.rkit
Microsoftvirtool:winnt/bohu.a
SymantecHacktool.Rootkit
EsetWin32/ProxyChanger.FX trojan
normanRootkit.CFBF
risingRootKit.Win32.Bohu.a
Trend MicroTROJ_SPNR.30L312
vba32Rootkit.AntiAv

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 BetaGeneric.dx
McAfee SupportedGeneric.dx



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:

0FE6158BF60B5DA8C43AB723AC33BCD399E27AFA

The following files have been added to the system:

  • %WINDIR%\yypro.pac
  • %PROGRAMFILES%\Common\msxml2.dll
  • %PROGRAMFILES%\Common\sqlite3.dll
  • %PROGRAMFILES%\Common\kupdata.exe
  • %WINDIR%\SYSTEM32\starforce\sfdrv01.sys
  • %PROGRAMFILES%\Common\suject.db
  • %PROGRAMFILES%\Common\ypac.txt
  • %PROGRAMFILES%\Common\pro.txt

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

  • %TEMP%\nsz8.tmp
  • %PROGRAMFILES%\Common\sfdrv01-nos.sys
  • %TEMP%\nsu9.tmp\System.dll
  • %TEMP%\nsu9.tmp\ns1E.tmp
  • %PROGRAMFILES%\Common\suject.db-journal
  • %TEMP%\nsu9.tmp\AccessControl.dll
  • %TEMP%\nsu9.tmp\nsExec.dll
  • %PROGRAMFILES%\Common\sfdrv01.sys
  • %TEMP%\nsu9.tmp\ns10.tmp
  • %TEMP%\nsu9.tmp\ns20.tmp
  • %TEMP%\nsu9.tmp\ns1D.tmp
  • %TEMP%\nsu9.tmp
  • %TEMP%\nsu9.tmp\ns1F.tmp

The following registry elements have been created:

  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\1\
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\2\
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\3\
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\4\
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\5\
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\6\
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\7\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INTERNET SETTINGS\AUTOCONFIGURL = file://%WINDIR%\yypro.pac
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\CSTR = helphtml78121
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\PATH = %PROGRAMFILES%\Common\
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\PS = 52DD5AD14AC78184DA3954B325A57BD065E677C67AA0D8095341959E67A379C28481DF246FAC22A066C591B282
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\SID = S-1-5-21-1482476501-[private subnet]522115-500
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\TX = 48
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\VISION = 1.002
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\1\TCY = 48
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\2\TCY = 48
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\3\TCY = 48
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\4\TCY = 48
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\5\TCY = 48
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\6\TCY = 48
  • HKEY_LOCAL_MACHINE\SOFTWARE\KCOMMON\7\TCY = 48
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\SESSION MANAGER\PENDINGFILERENAMEOPERATIONS = \??\%TEMP%\nsu9.tmp\

The applications attempted the following network connection(s):

  • 61.158.132.***:80
  • hxxp://tj.h233.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