PE_BUGBEAR.B
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)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: File infector
Destructiveness: No
Encrypted:
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
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
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
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
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
- %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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