csass.exe - Dangerous
csass.exe
Jeff's Story:
My PC had gotten a bad rootkit that my ISP antivirus software (powered by McAfee) could not detect, nor could fix.
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Manual removal instructions:
It also contains backdoor Trojan functionality, allowing unauthorised remote access to the infected computer via IRC channels.
W32/Rbot-DS spreads to network shares with weak passwords as a result of the backdoor Trojan element receiving the appropriate command from a remote user.
Copies itself to the Windows System32 folder as CSASS.EXE and creates the following entries at these locations in the registry:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices\
LanGuard Auto Updater = csass.exe
May also set the following registry keys:
HKLM\SOFTWARE\Microsoft\Ole\EnableDCOM = N
HKLM\SYSTEM\ControlSet001\Control\Lsa\restrictanonymous = 1
HKLM\SYSTEM\CurrentControlSet\Control\Lsa\restrictanonymous = 1
It will allow a remote user to issue various remote commands such as launching DOS attacks, deleting remote shares and keylogging information.
Remove it with RegRun.