W32/Rbot-GAB is a worm and IRC backdoor for the Windows platform.
W32/Rbot-GAB 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-GAB copies itself to <System>\xptxt.exe.
The following registry entries are created to run xptxt.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Micromedia Flash Update
xptxt.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Micromedia Flash Update
xptxt.exe
The following registry entry is set:
HKCU\Software\Microsoft\OLE
Micromedia Flash Update
xptxt.exe