W32/Rbot-FWX is a worm for the Windows platform which includes backdoor functionality.
W32/Rbot-FWX spreads to network shares protected with weak passwords.
W32/Rbot-FWX runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.
When first run W32/Rbot-FWX copies itself to <System>\1x32.exe and creates the
file \a.bat.
The file a.bat is detected as Troj/Batten-A.
The following registry entries are created to run 1x32.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Numerical Xtermz Agent
1x32.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Numerical Xtermz Agent
1x32.exe
W32/Rbot-FWX sets the following registry entries, disabling the automatic
startup of other software:
HKLM\SYSTEM\CurrentControlSet\Services\wuauserv
Start
4
HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess
Start
4
Note: disabling autostart for the SharedAccess service deactivates the
Microsoft
Internet Connection Firewall (ICF).
Registry entries are set as follows:
HKCU\Software\Microsoft\OLE
Numerical Xtermz Agent
1x32.exe
HKLM\SOFTWARE\Microsoft\Ole
EnableRemoteConnect
N
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1
Registry entries are created under:
HKCR\.key\