W32/Autorun-FA is a worm for the Windows platform.
W32/Autorun-FA includes functionality to access the internet and communicate with a remote server via HTTP.
When first run W32/Autorun-FA copies itself to:
<Windows>\regsvr.exe
<System>\regsvr.exe
<System>\winhelp.exe
and creates the following files:
<System>\setting.ini
<System>\setup.ini
<Windows>\winhelp.ini
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
Yahoo Messengger
<System>\regsvr.exe
The following registry entry is changed to run winhelp.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
System
Winhelp.exe
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
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Shell
Explorer.exe rundll.exe