Generic.dx!99F4C4D98C​8D

This page shows details and results of our analysis on the malware Generic.dx!99F4C4D98C8D

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

2913567

Description Added

2010-11-25

Description Modified

2010-11-25

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionGeneric.dx
Length2913567 bytes
MD599f4c4d98c8d5686d17101f81302aa9c
SHA19ac612e53095b15b610c7d07e86017cab2387edc


Other Common Detection Aliases

Company NamesDetection Names
AviraTR/Bumat!rts.A.43
BitDefenderTrojan.Generic.1349750
Dr.WebBATCH.Virus (probably)
F-ProtW32/NirCmd
FortiNetSuspicious
MicrosoftTrojan:Win32/Bumat!rts
SymantecTrojan Horse
EsetWin32/Agent trojan (probably variant)
NormanSuspicious_Gen.KAKU (trojan)
PandaGeneric Trojan
SophosNirCmd (PUA)
Trend MicroTROJ_Generic.DIT
Vba32Trojan.Win32.Agent2.cqmx
Vet (Computer Associates)Win32/AMalum.CANUZ

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


ActivitiesRisk Levels
Enumerates many system files and directories.Low
Adds or modifies Internet Explorer cookiesLow
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:

99F4C4D98C.ex

The following files have been added to the system:

  • c:\32788r22fwjfw\moveex.cfexe
  • c:\32788r22fwjfw\dumphive.cfexe
  • c:\32788r22fwjfw\system_ini.dat
  • c:\32788r22fwjfw\lang.bat
  • c:\32788r22fwjfw\erdntwin.loc
  • c:\32788r22fwjfw\nircmd.inf
  • c:\32788r22fwjfw\embedded.sed
  • c:\32788r22fwjfw\vfind.cfexe
  • c:\32788r22fwjfw\cregc.cmd
  • c:\32788r22fwjfw\mynul
  • c:\32788r22fwjfw\regdo.sed
  • c:\32788r22fwjfw\ffdefstr.dll
  • c:\32788r22fwjfw\history.bat
  • c:\32788r22fwjfw\erunt.loc
  • c:\32788r22fwjfw\erunt.cfexe
  • c:\32788r22fwjfw\badclsid
  • c:\32788r22fwjfw\fin.dat
  • c:\32788r22fwjfw\erdnt.e_e
  • c:\32788r22fwjfw\md5deep.cfexe
  • c:\32788r22fwjfw\bon.cfexe
  • c:\32788r22fwjfw\osver
  • c:\32788r22fwjfw\policies.dat
  • c:\32788r22fwjfw\lnkread.vbs
  • c:\32788r22fwjfw\combobatch.bat
  • c:\32788r22fwjfw\swreg.exe
  • c:\32788r22fwjfw\svc_wht.dat
  • c:\32788r22fwjfw\zdomain.dat
  • c:\32788r22fwjfw\setcsum.cfexe
  • C:\32788R22FWJFW\ComboFix-Download.exe
  • C:\32788R22FWJFW\executables.dat
  • c:\32788r22fwjfw\moveit.bat
  • c:\32788r22fwjfw\swsc.cfexe
  • c:\32788r22fwjfw\appinit.bad
  • c:\32788r22fwjfw\localsystemnetworkrestricted.dat
  • c:\32788r22fwjfw\wrp.cfexe
  • c:\32788r22fwjfw\mtee.cfexe
  • c:\32788r22fwjfw\setenvmt.bat
  • c:\32788r22fwjfw\fprops.vbs
  • c:\32788r22fwjfw\srizbi.md5
  • c:\32788r22fwjfw\svchost.dat
  • C:\32788R22FWJFW\DPF.sed
  • c:\32788r22fwjfw\nircmd.cfexe
  • c:\32788r22fwjfw\assoc.cmd
  • c:\32788r22fwjfw\cset.cmd
  • C:\32788R22FWJFW\WhiteLegacy.dat
  • c:\32788r22fwjfw\sf.cfexe
  • c:\32788r22fwjfw\find3m.bat
  • c:\32788r22fwjfw\023v.dat
  • c:\32788r22fwjfw\tail.cfexe
  • c:\32788r22fwjfw\netsvc.xp.dat
  • c:\32788r22fwjfw\creg.dat
  • c:\32788r22fwjfw\xpreg.dat
  • c:\32788r22fwjfw\grep.cfexe
  • c:\32788r22fwjfw\netsvc.dat
  • c:\32788r22fwjfw\svchost.vista.dat
  • c:\32788r22fwjfw\badclsid.c
  • c:\32788r22fwjfw\w2kreg.dat
  • c:\32788r22fwjfw\localservice.dat
  • c:\32788r22fwjfw\exe.reg
  • c:\32788r22fwjfw\delclsid.bat
  • c:\32788r22fwjfw\image001.gif
  • c:\32788r22fwjfw\boot.bat
  • c:\32788r22fwjfw\av.vbs
  • c:\32788r22fwjfw\fdsv.cfexe
  • %WINDIR%\SYSTEM32\cmd.execf
  • c:\32788r22fwjfw\av.cmd
  • c:\32788r22fwjfw\nircmd.com
  • c:\32788r22fwjfw\fixlsp.bat
  • c:\32788r22fwjfw\extract.cfexe
  • c:\32788r22fwjfw\hidec.exe
  • c:\32788r22fwjfw\sed.cfexe
  • c:\32788r22fwjfw\erdntdos.loc
  • c:\32788r22fwjfw\svcdrv.vbs
  • c:\32788r22fwjfw\toolbar.sed
  • c:\32788r22fwjfw\regdacl.sed
  • c:\32788r22fwjfw\vistareg.dat
  • C:\32788R22FWJFW\whitedirB.dat
  • c:\32788r22fwjfw\safeboot.dat
  • c:\32788r22fwjfw\purity.dat
  • %TEMP%\Perflib_Perfdata_96c.dat
  • c:\32788r22fwjfw\zhsvc.dat
  • c:\32788r22fwjfw\swxcacls.cfexe
  • c:\32788r22fwjfw\restore_pt.vbs
  • c:\32788r22fwjfw\ndis_combofix.dat
  • c:\32788r22fwjfw\023.dat
  • c:\32788r22fwjfw\rclink
  • c:\32788r22fwjfw\combo-fix.sys
  • c:\32788r22fwjfw\restoreo4.bat
  • c:\32788r22fwjfw\prep.cmd
  • c:\32788r22fwjfw\bootsect
  • c:\32788r22fwjfw\psexec.cfexe
  • c:\32788r22fwjfw\region.dat
  • c:\32788r22fwjfw\list-c.bat
  • c:\32788r22fwjfw\safeboot.def.vista.dat
  • c:\32788r22fwjfw\katch.cmd
  • c:\32788r22fwjfw\pv.cfexe
  • c:\32788r22fwjfw\networkservice.dat
  • c:\32788r22fwjfw\dd.cfexe
  • c:\32788r22fwjfw\zip.cfexe
  • c:\32788r22fwjfw\catchme.cfexe
  • c:\32788r22fwjfw\clsid.c
  • c:\32788r22fwjfw\safebootrepair.bat
  • c:\32788r22fwjfw\osid.vbs
  • c:\32788r22fwjfw\gsar.cfexe
  • c:\32788r22fwjfw\nircmdc.cfexe
  • c:\32788r22fwjfw\fi.cfexe
  • c:\32788r22fwjfw\dpf.str
  • c:\32788r22fwjfw\c.bat
  • c:\32788r22fwjfw\rogues.dat
  • c:\32788r22fwjfw\unzip.cfexe
  • c:\32788r22fwjfw\handle.cfexe
  • c:\32788r22fwjfw\run2.sed
  • c:\32788r22fwjfw\netsvc.bad.dat
  • c:\32788r22fwjfw\cregc.dat
  • c:\32788r22fwjfw\netsvc.vista.dat
  • c:\32788r22fwjfw\safeboot.def.dat
  • c:\32788r22fwjfw\localservicenetworkrestricted.dat
  • c:\32788r22fwjfw\ddsdo.sed
  • c:\32788r22fwjfw\setpath.cfexe
  • c:\32788r22fwjfw\nd_.bat

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

  • C:\__tmp_rar_sfx_access_check_13344687

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\
  • HKEY_CURRENT_USER\SOFTWARE\POLICIES\MICROSOFT\WINDOWS\
  • HKEY_CURRENT_USER\SOFTWARE\POLICIES\MICROSOFT\WINDOWS\SYSTEM\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\.CFEXE\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\CONSOLE\INSERTMODE = 0
  • HKEY_CURRENT_USER\CONSOLE\QUICKEDIT = 0
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\COMPLETIONCHAR = 26
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\DELAYEDEXPANSION = 0
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\ENABLEEXTENSIONS = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\PATHCOMPLETIONCHAR = 26
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\GRPCONV\LOG = Init Application.
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\POLICIES\SYSTEM\DISABLEREGISTRYTOOLS = 0
  • HKEY_CURRENT_USER\SOFTWARE\POLICIES\MICROSOFT\WINDOWS\SYSTEM\DISABLECMD = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\COMPLETIONCHAR = 26
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\DELAYEDEXPANSION = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\ENABLEEXTENSIONS = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\PATHCOMPLETIONCHAR = 26
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SYSTEMRESTORE\CREATEFIRSTRUNRP = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\SYSTEMRESTORE\DISABLESR = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUNONCE\GRPCONV
  • HKEY_USERS\.DEFAULT\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\COMPLETIONCHAR = 26
  • HKEY_USERS\.DEFAULT\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\ENABLEEXTENSIONS = 1
  • HKEY_USERS\.DEFAULT\SOFTWARE\MICROSOFT\COMMAND PROCESSOR\PATHCOMPLETIONCHAR = 26

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