Summary
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.
Removal
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First, check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
Upon execution, SdBot.CKF will create a copy of itself in the following location:
- %windir%\winudspm.exe
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:
- irc.bluehell.org
- 221.6.6.232
Then it joins the following channels:
- #blockbot2
- #blockbot.msn
The malware attempts to download from the following locations:
- http://mitglied.lycos.de/cheatsguard/dci.exe
- http://mitglied.lycos.de/cheatsguard/is154890.exe
- http://mitglied.lycos.de/subzz/setup.exe
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:
- aim.stop
- download
- gone
- l
- lo
- login
- logout
- msn.stop
- r.getfile
- r.new
- r.upd4te
- r.update
- rm
- rmzerm3b1tch
- triton.stop
- update
Furthermore, another sign of infection from this malware is an outbound connection to http.xn--mg-kka.com.
Protect your devices from malware with F‑Secure Total
Protecting your devices from malicious software is essential for maintaining online security. F‑Secure Total makes this easy, helping you to secure your devices in a brilliantly simple way.
Award‑winning antivirus and malware protection
Online browsing, banking, and shopping protection
24/7 online identity and data breach monitoring
Unlimited VPN service to safeguard your privacy
Password manager with private data protection
Choose how many devices you want to protect to get started.
Free customer support
Cancel anytime
The trial does not obligate you to buy the product
After 30 days your subscription will renew automatically for one year at €69.99.
)
)
More Support
Community
Ask questions in our Community.
User guides
Check the user guide for instructions.
Contact Support
Chat with with or call an agent.
Submit a Sample
Submit a file or URL for analysis.