Sophos

W32/SillyFDC-G

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Protection available since 11 December 2006 06:36:02 (GMT)
Last updated 28 January 2008 12:56:52 (GMT)
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Action

More Information

W32/SillyFDC-G is a floppy disk and network worm for the Windows platform.

When run W32/SillyFDC-G copies itself to the following locations:

<Windows>\RVHOST.EXE
<System>\RVHOST.EXE
<Windows>\Resources\Themes\Luna\Shell\Homestead\<original worm filename>

W32/SillyFDC-G also attempts to copy itself to the following drive-mappings (which may be shared network drives or CD drives):

A:\NTT0509.EXE
E:\NTT0509.EXE
F:\NTT0509.EXE
G:\NTT0509.EXE
H:\NTT0509.EXE

W32/SillyFDC-G may also copy itself to removeable drives as "New Folder.exe".

W32/SillyFDC-G also sets the following registry entries to run itself on startup:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Yahoo Messengger
<System>\RVHOST.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
NotePad
<Windows>\Resources\Themes\Luna\Shell\Homestead\<original worm filename>

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Shell
Explorer.exe RVHOST.exe


The following registry entries are also created or changed:

HKLM\SYSTEM\CurrentControlSet\Services\Schedule
NextAtJobId
2

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\
WorkgroupCrawler\Shares
shared
\New Folder.exe

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
NofolderOptions
1

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableRegistryTools
1

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableTaskMgr
1

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