Virus:W32/Drowor.A

Classification

Malware

Virus

W32

-

Summary

Drowor.A is a Windows file appending virus that infects executables in all drives found including network drives.

Removal

Automatic action

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

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Technical Details

Drowor.A is a Windows file appending virus that infects executables in all drives found including network drives.Upon execution, this virus checks to see if it is already running in memory by elevating its privileges and enumerating currently running processes on the affected machine.It then creates and executes a copy of itself as:

  • %windows%\system\internat.exe.

It drops a hidden copy of itself, setup.exe, in the root directory of discovered drives. This includes network drives. It creates an autorun.inf alongside of this setup.exe that may trigger and execute the file. It Infects by appending itself in Windows executables, adding a section named ".ice" in the infected files.Drowor.A creates a text file list of Windows executables in the discovered drives to a hard-coded path:

  • C:\WINDOWS\win.log

Drowor.A attempts to accesses a file from:

  • https://mm.21380.com/[Removed].txt

The URL is currently unavailable.

Date Created: 2007-03-12 16:50:32.0

Date Last Modified: 2007-03-12 17:38:35.0