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Generic!atr

What is Generic!atr?

Discovered on 31st January 2007, Generic!atr is a Trojan classified as a generic detection for a configuration text file (autorun.inf) used by many worms. This file is usually dropped onto the root of all removable drivers and mapped drives in an attempt to autorun an executable when the drive is accessed.

The size for this file varies. The size differs based on the length of the filename being referenced inside the .inf file.
Some copies of this file has the System (S) and Hidden (H) attributes present in attempt to hide the file from certain, default, viewing options within Windows Explorer.

The contents of the file are similar to the following:
[Autorun]
open=<WORM>.exe
shellexecute=<WORM>.exe
shell\Auto\command=<WORM>.exe

How does it affect your PC?

Infection starts either with manual execution of the binary or by navigating to folders containing infected files whereby the autorun.inf files can cause auto-execution. The presence of autorun.inf files on the root of all removable drives or mapped network drives containing information similar to that described in the Characteristics section is an indication of its presence.

How to remove Generic!atr?

A combination of the latest DATs and the Engine will be able to detect and remove this threat. It is recommended that users not to trust seemingly familiar or safe file icons, particularly when received via P2P clients, IRC, email or other media where users can share files.

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