high
Summary
Summary
Action- More Information
| Affected operating systems | Windows |
|---|---|
| Characteristics |
|
| Included in our products from | January 2009 (4.37) |
| Protection available since | 21 November 2008 15:57:59 (GMT) |
| Detected by | All Sophos products |
Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
More Information
W32/Agent-IIB is a worm for the Windows platform.
W32/Agent-IIB includes functionality to access the internet and communicate with a remote server via HTTP.
When first run W32/Agent-IIB copies itself to:
<Windows>\regsvr.exe
<System>\regsvr.exe
<System>\svchost .exe
and creates the following files:
<System>\dotnetfx.dll
<System>\setting.ini
<System>\setup.ini
The file dotnetfx.dll is detected as W32/Autorun-OQ and the file setup.ini is detected as Troj/Agent-GXM.
The following registry entry is created to run regsvr.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Msn Messsenger
<System>\regsvr.exe
The following registry entry is changed to run regsvr.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Shell
Explorer.exe regsvr.exe
The following registry entry is created to run code exported by dotnetfx.dll on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
.Net Recovery
rundll32.exe dotnetfx.dll,repair
The following registry entry is set, disabling system software:
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableRegistryTools
1
Registry entries are set as follows:
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
NofolderOptions
0
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableTaskMgr
0
Registry entries are created under:
HKLM\SOFTWARE\Microsoft\DotNetRecovery
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