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WORM_HAIRY.A
Overview

Malware type: Worm

Aliases: Worm.Win32.AutoRun.sg (Kaspersky), W32/Autorun.worm.g (McAfee), W32.Hairy.A (Symantec), Worm/Hairy.A (Avira), W32/Hairy-A (Sophos),

In the wild: Yes

Destructive: No

Language: English

Platform: Windows 98, ME, NT, 2000, XP, Server 2003

Encrypted: No

Overall risk rating:


Reported infections:

Damage potential:

Medium

Distribution potential:

High

Infection Channel 1 : Propagates via removable drives


Description: 

To get a one-glance comprehensive view of the behavior of this malware, refer to the Behavior Diagram shown below.

WORM_HAIRY.A Behavior Diagram

Malware Overview

This worm arrives via removable drives.

It spreads by dropping copies of itself in all physical, removable, and floppy drives. It also drops an AUTORUN.INF file to automatically execute dropped copies when the drives are accessed.

When executed, it drops several files, including the non-malicious file %System Root%\HarryPotter-TheDeathlyHallows.doc. This Microsoft Word document contains the following details:

Harry Potter is dead.

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Below is a screenshot of the said document:

Harry Potter is dead.

It also displays a command prompt window, which contains the following message, at every system startup:

Title: read and repent

Message:
the end is near

repent from your evil ways O Ye folks

lest you burn in hell...JK Rowling especially

It uses the default icon of MS Word in an attempt to trick users into thinking that it is a normal document. It restarts the affected system each time it is executed.

For additional information about this threat, see:
Solution
Technical Details

Description created: Jul. 1, 2007 5:16:44 PM GMT -0800

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