Troj/Ciadoor-DQ is a Trojan for the Windows platform.
Troj/Ciadoor-DQ 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 Troj/Ciadoor-DQ copies itself to <System>\crhwss.exe.
The following registry entries are created to run crhwss.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
System Updater Machine
crhwss.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
System Updater Machine
crhwss.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
System Updater Machine
crhwss.exe