Virkel is a backdoor with IM (Instant Messenger) spreading capabilities. It was first found on October 26th, 2005. The backdoor can provide a hacker with information about a system, work as a proxy, update itself, perform a Denial of Service (DoS) attack, open remote shell, download files. It also kills processes of anti-virus and security software and blocks access to many different sites that belong to anti-virus and security software vendors.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
Virkel.A backdoor is detected with the following F-Secure Anti-Virus updates:
Detection Type: PC
Description Created: Alexey Podrezov; October 26th, 2005