W32/Rbot-FC is a worm which attempts to spread to remote network shares. It also contains backdoor Trojan functionality, allowing unauthorised remote access to the infected computer via IRC channels while running in the background as a service process.
W32/Rbot-FC spreads to network shares with weak passwords as a result of the backdoor Trojan element receiving the appropriate command from a remote user.
W32/Rbot-FC copies itself to the Windows System folder as WINSYST32.EXE and creates entries at the following locations in the registry so as to run itself on system startup:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft IT Update = winsyst32.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
Microsoft IT Update = winsyst32.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft IT Update = winsyst32.exe
W32/Rbot-FC may try to delete network shares and also try to log keystrokes and window text to a file with a CRF extension in the root folder.
W32/Rbot-FC can collect the CD keys of several popular computer games and applications.