Backdoor:W32/SdBot.CKF is a backdoor. Backdoors are remote administration utilities that open infected machines to external control via the Internet or a local network. Upon execution, SdBot.CKF will attempt to connect to an IRC server and tries to download additional malware to the infected machine.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
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Upon execution, SdBot.CKF will create a copy of itself in the following location:
It creates the following registry entry to automatically start with Windows:
- HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run Windows UDP Control = winudspm.exe
Once the backdoor is active, it connects to an IRC server, joins a certain channel and acts as a bot. The backdoor will try to contact the following IRC server:
Then it joins the following channels:
The malware attempts to download from the following locations:
The files are detected as follows:
- dci.exe - Backdoor:W32/Rbot.GLP
- is154890 - Trojan-Downloader.Win32.Agent.rcl
- setup.exe - Backdoor:W32/IRCBot.GNS
Here are more commands used by the bot:
Furthermore, another sign of infection from this malware is an outbound connection to http.xn--mg-kka.com.