Worm:Win32/Dorkbot.I

Posted: December 4, 2012

Worm:Win32/Dorkbot.I Description

Worm:Win32/Dorkbot.I is an IRC-based worm that circulates via removable drives, instant messaging programs such as Windows Live Messenger, Pidgin chat, Xchat and mIRC, and social networks such as Facebook, Twitter, Bebo, and Vkontakte (a Russian social network). Win32/Dorkbot.I may grab user names and passwords by monitoring network communication, and may block websites that are associated with security updates. Worm:Win32/Dorkbot.I may also launch a limited denial of service (DoS) attack. Once installed, Worm:Win32/Dorkbot.I makes system changes on the affected computer system by dropping potentially malicious files and modifying the Windows Registry. Worm:Win32/Dorkbot.I modifies the certain registry entry so that it can run its copy every time Windows is started. Win32/Dorkbot.I displays pop-up messages and may send a message from a Skype contact. Worm:Win32/Dorkbot.I may come as a link through in an instant message or social network message; the link points to a copy of Worm:Win32/Dorkbot.I that can be downloaded and executed on the affected PC user's computer. Worm:Win32/Dorkbot.I connects to an IRC server, joins a channel and waits for instructions. Worm:Win32/Dorkbot.I infects websites and blocks access to security websites. Worm:Win32/Dorkbot.I may also download additional or updated domain list from a remote website. When run, Worm:Win32/Dorkbot.I injects a code into 'explorer.exe', as well as to many other running processes on the infected computer. The number of processes Worm:Win32/Dorkbot.I is able to inject into depends on whether it has been executed with administrator privileges.

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Technical Details

Registry Modifications


The following newly produced Registry Values are:

HKEY..\..\{Value}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "" = "%AppData%\.exe"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "ozkqke" = "%AppData%\ozkqke.exe"
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