WORM_WISBIPUF.J
Worm:MSIL/Wisbipuf.C (Microsoft); Worm.MSIL.Agent (Ikarus)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Worm 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 Worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This Worm adds the following folders:
- %System Root%\Configration
- %System Root%\Configration\data
- %System Root%\Configration\icons
- %System Root%\Configration\links
- %System Root%\Configration\setting
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
It drops the following files:
- %System Root%\Configration\w2.zip
- %System Root%\Configration\wbs.txt
- %System Root%\Configration\icons.zip
- %System Root%\Configration\icons
- %System Root%\Configration\icons\doc.ico
- %System Root%\Configration\icons\folder1.ico
- %System Root%\Configration\icons\folder2.ico
- %System Root%\Configration\icons\pdf.ico
- %System Root%\Configration\icons\pic.ico
- %System Root%\Configration\icons\sound.ico
- %System Root%\Configration\icons\txt.ico
- %System Root%\Configration\icons\vid.ico
- %System Root%\Configration\icons\xlsx.ico
- %System Root%\Configration\data\184.exe
- %System Root%\Configration\info.txt
- %System Root%\Configration\update.txt
- %System Root%\Configration\setting\guide.txt
- %System Root%\Configration\setting\power.txt
- %System Root%\Configration\setting\gap.txt
- %System Root%\Configration\df-start.txt
- %System Root%\Configration\wbs-start.txt
- %System Root%\Configration\lastup.txt
- %System Root%\Configration\sign231.txt
- %System Root%\Configration\data\backup.txt
- %System Root%\Configration\newupdate.txt
- %System Root%\Configration\newwbs.txt
- %System Root%\Configration\oldwbs.exe
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
It drops and executes the following files:
- %System Root%\Configration\w2.exe
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
Autostart Technique
This Worm modifies the following registry entry(ies) to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
w2 = "%System Root%\Configration\w2.exe"
Other System Modifications
This Worm adds the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Discardable\PostSetup\Component Categories\
{56FFCC30-D398-11D0-B2AE-00A0C908FA49}\Enum
Implementing = {hex values}
Other Details
This Worm connects to the following possibly malicious URL:
- {BLOCKED}.{BLOCKED}.198.195
- {BLOCKED}.{BLOCKED}.197.110
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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Restart in Safe Mode
Step 4
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\Windows\CurrentVersion\Run
- w2 = "%System Root%\Configration\w2.exe"
- w2 = "%System Root%\Configration\w2.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Discardable\PostSetup\Component Categories\{random values}\Enum
- Implementing = {hex values}
- Implementing = {hex values}
Step 5
Search and delete this folder
- %System Root%\Configration
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as WORM_WISBIPUF.J. 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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