Welcome to the Virus Encyclopedia of Panda Security.
It spreads and affects other computers.
It indiscriminately deletes files on the computer.
It terminates processes belonging to security tools, leaving the computer vulnerable to other malware attacks.
It uses stealth techniques to avoid being detected by the user.
It uses anti-monitoring techniques in order to prevent it being detected by antivirus companies.
, via IRC, via mapped drives, through shared network resources.
|First detected on:||April 24, 2009|
|Detection updated on:||Oct. 5, 2009|
Autorun.IWY is a worm that spreads by copying itself, without infecting other files.
It causes information loss:
it indiscriminately deletes random files.
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 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.
- It modifies system permissions in order to hide itself.
It uses several methods in order to avoid detection by antivirus companies:
- It terminates its own execution if it detects that it is being executed in a virtual machine environment, such as VMWare or VirtualPC.
- It prevents scanning tools from running, such as Windows Registry Editor, FileMonitor, etc.
- It terminates its own execution if it detects that a memory dump program is running, such as Procdump.
- It terminates its own execution if it detects that a debugging program is active.
Autorun.IWY 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.
- Computer networks (mapped drives): it creates copies of itself in mapped drives.
- Computer networks (shared resources): it creates copies of itself in shared network resources to which it has access.