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PE_BUGBEAR.B
Aliases: Worm:Win32/Bugbear.B@mm (Microsoft); W32/Bugbear.69916@MM (McAfee); W32.Bugbear.B@mm (Symantec); Email-Worm.Win32.Tanatos.b (Kaspersky); Win32.Bugbear.gen (v) (Sunbelt); Generic.Banker.OT.69C2C0C8 (FSecure)
Malware type: File infector
Destructive: No
Platform: Windows 2000, Windows XP, Windows Server 2003
In the wild: Yes

Overview


This file infector arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Technical Details


File size: 80,384 bytes
File type: EXE
Memory resident: No
Initial samples received date: 23 Dec 2012

Arrival Details

This file infector arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other System Modifications

This file infector adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\PlayBar

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\DisplayPanel

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\StatusBar

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows Media\WMSDK\General
UniqueID = "{6C6AA9CE-B788-47A0-95CB-E0D6EE371E0B}"

HKEY_CURRENT_USER\Software\Microsoft\
Windows Media\WMSDK\General
ComputerName = "BRIAN-58E6EA8A6"

HKEY_CURRENT_USER\Software\Microsoft\
Windows Media\WMSDK\General
VolumeSerialNumber = "fbdff95"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\PlayBar
ClrShadow = "888"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\PlayBar
ClrHighlight = "ffffff"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\PlayBar
ClrForeColor = "0"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\PlayBar
ClrBackColor = "c8dd4"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\PlayBar
ClrDownload = "ffffff"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\PlayBar
ClrViewed = "ffffff"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\PlayBar
ClrStatic = "888"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\DisplayPanel
ClrBackColor = "0"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\DisplayPanel
ClrShadow = "888"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\DisplayPanel
ClrHighlight = "ffffff"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\DisplayPanel
ClrForeColor = "ffffff"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\StatusBar
ClrBackColor = "0"

HKEY_CURRENT_USER\Software\Microsoft\
MediaPlayer\Control\StatusBar
ClrForeColor = "ffffff"

Dropping Routine

This file infector drops the following files:

  • %User Temp%\vba1.tmp
  • %System%\ocrrkhn.dll
  • %System%\fippty.dll
  • %System%\zloomcv.dll
  • %User Temp%\sphqghum.tmp
  • %User Temp%\seaylnlf.tmp
  • %Windows%\hbeefs.dat
  • %User Temp%\~phqghum.tmp
  • %Common Startup%\BFSS.EXE

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %System% is the Windows system folder, which is usually C:\Windows\System32.. %Windows% is the Windows folder, which is usually C:\Windows.. %Common Startup% is the system's shared Startup folder, which is usually C:\Documents and Settings\All Users\Start Menu\Programs\Startup on Windows 2000, XP, and Server 2003.)

This report is generated via an automated analysis system.

Solution


Minimum scan engine: 9.300

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Delete this registry key

[ Learn more ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.


  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control
    • PlayBar
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control
    • DisplayPanel
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control
    • StatusBar

Step 3

Delete this registry value

[ Learn more ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.


  • In HKEY_CURRENT_USER\Software\Microsoft\Windows Media\WMSDK\General
    • UniqueID = "{6C6AA9CE-B788-47A0-95CB-E0D6EE371E0B}"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows Media\WMSDK\General
    • ComputerName = "BRIAN-58E6EA8A6"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows Media\WMSDK\General
    • VolumeSerialNumber = "fbdff95"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\PlayBar
    • ClrShadow = "888"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\PlayBar
    • ClrHighlight = "ffffff"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\PlayBar
    • ClrForeColor = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\PlayBar
    • ClrBackColor = "c8dd4"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\PlayBar
    • ClrDownload = "ffffff"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\PlayBar
    • ClrViewed = "ffffff"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\PlayBar
    • ClrStatic = "888"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\DisplayPanel
    • ClrBackColor = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\DisplayPanel
    • ClrShadow = "888"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\DisplayPanel
    • ClrHighlight = "ffffff"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\DisplayPanel
    • ClrForeColor = "ffffff"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\StatusBar
    • ClrBackColor = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Control\StatusBar
    • ClrForeColor = "ffffff"

Step 4

Search and delete these components

[ Learn more ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %User Temp%\vba1.tmp
  • %System%\ocrrkhn.dll
  • %System%\fippty.dll
  • %System%\zloomcv.dll
  • %User Temp%\sphqghum.tmp
  • %User Temp%\seaylnlf.tmp
  • %Windows%\hbeefs.dat
  • %User Temp%\~phqghum.tmp
  • %Common Startup%\BFSS.EXE

Step 5

Scan your computer with your Trend Micro product to clean files detected as PE_BUGBEAR.B. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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Analysis By: Automation

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