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Virus Profile: Ransom!87F3B3C8675A

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 4/25/2013
Date Added: 4/26/2013
Origin: Unknown
Length: 228888
Type: Trojan
Subtype: -
DAT Required: 7056
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 DetectionRansom
Length228888 bytes
MD587f3b3c8675ac908eb958d3512339366
SHA17dc0df57df444216c3ec528d793bf1934daa8e24


Other Common Detection Aliases

Company NamesDetection Names
ahnlabDropper/Win32.Dorifel
avastWin32:Atraps-PW
AVG (GriSoft)Delf.AIXE (Trojan horse)
aviraDR/Delphi.Gen
KasperskyTrojan-Ransom.Win32.Dorifel.pek
BitDefenderTrojan.Generic.8556460
clamavWIN.Worm.Dorifel
Dr.WebTrojan.Searcher.960
F-ProtW32/Quervar.A
FortiNetW32/Quervar.E!tr
MicrosoftVirus:Win32/Quervar.gen!C
SymantecTrojan.Exprez.B
normanBadBreak.A
risingVirus.Ravy!4A99
SophosW32/Quervar-C
Trend MicroPE_QUERVAR.F
Vet (Computer Associates)Win32/Fakedoc_i

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
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaRansom
McAfee SupportedRansom



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:

7DC0DF57DF444216C3EC528D793BF1934DAA8E24

The following files have been added to the system:

  • %TEMP%\~DF639D.tmp
  • C:\7DC0DF57DF444216C3EC528D793BF1934DAA8E24--.doc
  • %APPDATA%\01DB40\01F678.exe.lnk
  • C:\~$C0DF57DF444216C3EC528D793BF1934DAA8E24--.doc
  • %APPDATA%\Microsoft\Office\Recent\Local Disk (C).LNK
  • %APPDATA%\Microsoft\Templates\~$Normal.dot
  • %TEMP%\~DF5F66.tmp
  • %APPDATA%\Microsoft\Office\Recent\7DC0DF57DF444216C3EC528D793BF1934DAA8E24--.doc.LNK

The following files have been changed:

  • %APPDATA%\Microsoft\Office\Recent\index.dat

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

  • %APPDATA%\01DB40\01F678.exe

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\COMMON\REVIEWCYCLE\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\MODI\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\MODI\MDI WRITER\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\DOCUMENTRECOVERY\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\DOCUMENTRECOVERY\34151\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\STARTUPITEMS\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PROOFING TOOLS\GRAMMAR\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PROOFING TOOLS\GRAMMAR\MSGRAMMAR\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PROOFING TOOLS\GRAMMAR\MSGRAMMAR\3.0\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PROOFING TOOLS\GRAMMAR\MSGRAMMAR\3.0\1033\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PROOFING TOOLS\GRAMMAR\MSGRAMMAR\3.0\1033\OPTION SET 0\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PROOFING TOOLS\GRAMMAR\MSGRAMMAR\3.0\1033\OPTION SET 1\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\COMMON\INSTALLROOT\UE\{901[private subnet]-11D3-8CFE-0150048383C9} = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\COMMON\REVIEWCYCLE\REVIEWTOKEN = {C4F357FA-B2C7-41D5-9AB2-4E9C12E1EF2F}
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\MODI\MDI WRITER\REGVERSION = 3
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\MTTT = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\DOCUMENTRECOVERY\34151\34151 = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\STARTUPITEMS\3;
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\11.0\WORD\RESILIENCY\STARTUPITEMS\E=
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\COMMON\ASSISTANT\CURRASSTSTATE = 38
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\ARIAL = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\ARIAL BLACK = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\ARIAL NARROW = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\BOOK ANTIQUA = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\BOOKMAN OLD STYLE = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\BOOKSHELF SYMBOL 7 = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\CENTURY GOTHIC = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\COMIC SANS MS = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\COURIER NEW = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\FRANKLIN GOTHIC MEDIUM = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\GARAMOND = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\GEORGIA = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\HAETTENSCHWEILER = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\IMPACT = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\LUCIDA CONSOLE = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\LUCIDA SANS UNICODE = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\MARLETT
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\MICROSOFT SANS SERIF = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\MONOTYPE CORSIVA = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\MS OUTLOOK = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\MS REFERENCE SANS SERIF = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\MS REFERENCE SPECIALTY = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\PALATINO LINOTYPE = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\SYLFAEN = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\SYMBOL = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\TAHOMA = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\TREBUCHET MS = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\VERDANA = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\WEBDINGS = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\WINGDINGS = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\WINGDINGS 2 = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PANOSE\WINGDINGS 3 = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PROOFING TOOLS\GRAMMAR\MSGRAMMAR\3.0\1033\OPTIONS VERSION = 1
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PROOFING TOOLS\GRAMMAR\MSGRAMMAR\3.0\1033\OPTION SET 0\DATA = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PROOFING TOOLS\GRAMMAR\MSGRAMMAR\3.0\1033\OPTION SET 0\NAME = Grammar & Style
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PROOFING TOOLS\GRAMMAR\MSGRAMMAR\3.0\1033\OPTION SET 1\DATA = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\SHARED TOOLS\PROOFING TOOLS\GRAMMAR\MSGRAMMAR\3.0\1033\OPTION SET 1\NAME = Grammar Only
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINDOWS\LOAD = C:\DOCUME~1\ADMINI~1.VMG\APPLIC~1\01DB40\01F678~1.LNK
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INSTALLER\USERDATA\S-1-5-18\PRODUCTS\90401[private subnet]C8EF[private subnet]C\PRODUCTFILES = [private subnet]
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INSTALLER\USERDATA\S-1-5-18\PRODUCTS\90401[private subnet]C8EF[private subnet]C\SPELLINGANDGRAMMARFILES_1033 = [private subnet]
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\INSTALLER\USERDATA\S-1-5-18\PRODUCTS\90401[private subnet]C8EF[private subnet]C\WORDFILES = [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.