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Virus Profile: Generic Dropper.w!C9AD01B3CD3B

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 4/6/2013
Date Added: 4/6/2013
Origin: Unknown
Length: 222316
Type: Trojan
Subtype: -
DAT Required: 7036
Removal Instructions
   
 
 
   

Description

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.

Indication of Infection

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Methods 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.

   

Virus Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionGeneric Dropper.w
Length222316 bytes
MD5c9ad01b3cd3b84aa6e2a43944b56f1b6
SHA11bfed82f98fa1b44528ca0ec582cf827510862e7


Other Common Detection Aliases

Company NamesDetection Names
ahnlabWin32/Autorun.worm.88580
avastWin32:Folin-E
AVG (GriSoft)Win32/Xorer.C
aviraTR/Crypt.XPACK.Gen
KasperskyVirus.Win32.Xorer.dr
BitDefenderTrojan.Pinx.G
clamavPUA.Win32.Packer.Upx-28
Dr.WebTrojan.Rox
F-ProtW32/BadBHO.A.gen!Eldorado
FortiNetW32/Xorer.DR
MicrosoftVirus:Win32/Xorer.A
SymantecW32.Pagipef.I!inf
EsetWin32/Xorer virus (variant)
normanXorer.FF
pandaTrj/Downloader.RZT
SophosMal/Generic-L
Trend MicroTROJ_GEN.R99C1DA
vba32Virus.Win32.Xorer.gp
V-BusterWin32.Xorer.Gen (mutant)
Vet (Computer Associates)Win32/Pagipef.N

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


ActivitiesRisk Levels
Uses the ping commandMedium
Enumerates many system files and directories.Low
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaGeneric Dropper.w
McAfee SupportedGeneric Dropper.w



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:

1BFED82F98FA1B44528CA0EC582CF827510862E7

The following files have been added to the system:

  • %WINDIR%\SYSTEM32\com\lsass.exe
  • %WINDIR%\SYSTEM32\com\lsass.exe.log
  • %WINDIR%\SYSTEM32\dnsq.dll
  • %WINDIR%\SYSTEM32\com\netcfg.dll
  • %ALLUSERSPROFILE%\Start Menu\Programs\Startup\~.exe
  • %WINDIR%\SYSTEM32\com\smss.exe
  • %WINDIR%\SYSTEM32\ntfsus.exe
  • %WINDIR%\SYSTEM32\com\netcfg.000

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

  • C:\NetApi00.sys
  • %WINDIR%\SYSTEM32\com\lsass.~
  • %WINDIR%\SYSTEM32\00302.log

The following registry elements have been created:

  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{450EC9C4-0F7F-407F-B084-D1147FE9DDCC}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{450EC9C4-0F7F-407F-B084-D1147FE9DDCC}\INPROCSERVER32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\CONTROL\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\IMPLEMENTED CATEGORIES\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\IMPLEMENTED CATEGORIES\{7DD95801-9882-11CF-9FA9-00\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\IMPLEMENTED CATEGORIES\{7DD95802-9882-11CF-9FA9-00\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\INPROCSERVER32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\MISCSTATUS\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\MISCSTATUS\1\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\PROGID\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\TOOLBOXBITMAP32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\TYPELIB\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\VERSION\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\IFOBJ.IFOBJCTRL.1\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\IFOBJ.IFOBJCTRL.1\CLSID\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{2D96C4BF-8DCA-4A97-A24A-896FF841AE2D}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{2D96C4BF-8DCA-4A97-A24A-896FF841AE2D}\PROXYSTUBCLSID\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{2D96C4BF-8DCA-4A97-A24A-896FF841AE2D}\PROXYSTUBCLSID32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{2D96C4BF-8DCA-4A97-A24A-896FF841AE2D}\TYPELIB\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{AAC17985-187F-4457-A841-E60BAE6359C2}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{AAC17985-187F-4457-A841-E60BAE6359C2}\PROXYSTUBCLSID\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{AAC17985-187F-4457-A841-E60BAE6359C2}\PROXYSTUBCLSID32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{AAC17985-187F-4457-A841-E60BAE6359C2}\TYPELIB\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{814293BA-8708-42E9-A6B7-1BD3172B9DDF}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{814293BA-8708-42E9-A6B7-1BD3172B9DDF}\1.0\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{814293BA-8708-42E9-A6B7-1BD3172B9DDF}\1.0\0\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{814293BA-8708-42E9-A6B7-1BD3172B9DDF}\1.0\0\WIN32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{814293BA-8708-42E9-A6B7-1BD3172B9DDF}\1.0\FLAGS\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\TYPELIB\{814293BA-8708-42E9-A6B7-1BD3172B9DDF}\1.0\HELPDIR\

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{D9901239-34A2-448D-A000-3705544ECE9D}\INPROCSERVER32\THREADINGMODEL = Apartment
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\COMPONENT CATEGORIES\{7DD95801-9882-11CF-9FA9-00AA006C42C4}\409 = Controls safely scriptable!
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\COMPONENT CATEGORIES\{7DD95802-9882-11CF-9FA9-00AA006C42C4}\409 = Controls safely initializable from persistent data!
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{2D96C4BF-8DCA-4A97-A24A-896FF841AE2D}\TYPELIB\VERSION = 1.0
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\INTERFACE\{AAC17985-187F-4457-A841-E60BAE6359C2}\TYPELIB\VERSION = 1.0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INSTALLER\USERDATA\S-1-5-18\PRODUCTS\90401[private subnet]C8EF[private subnet]C\PRODUCTNONBOOTFILES = [private subnet]

   

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.

   

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