Welcome to the Virus Encyclopedia of Panda Security.
It spreads and affects other computers.
It uses the infected computer to take malicious actions on other users.
It carries out actions that decrease the security level of the computer.
It uses stealth techniques to avoid being detected by the user.
, via IRC, through instant messaging.
|First detected on:||Feb. 19, 2010|
|Detection updated on:||Feb. 23, 2010|
Kolabc.BC is a worm that spreads by copying itself, without infecting other files.
It affects productivity, preventing tasks from being carried out:
- In the affected computer:
it converts the computer into a platform for taking malicious action surreptitiously: spam sending, launch of Denial of Service attacks, malware distribution, etc.
It reduces the security level of the computer:
it terminates processes belonging to security tools, such as antivirus programs and firewalls, leaving the computer defenseless against attacks from other malware; it awaits remote-control orders received through
IRC or FTP; it changes system permissions, decreasing the security level.
It uses stealth techniques to avoid being detected by the user:
- It uses techniques included in its code to hide itself while it is active.
- It terminates processes corresponding to several security tools, such as antivirus programs and firewalls, to prevent detection.
- It deletes the original file from which it was run once it is installed on the computer.
Kolabc.BC uses the following propagation or distribution methods:
- Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
- IRC: It sends a copy of itself to all users connected to the channel to which the infected user is connected.
- Instant messaging: it sends links pointing to a copy of itself to all users included in the infected user's contacts list.