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TROJ_NUWAR.ABK
Overview

Malware type: Trojan

Aliases: Trojan-Downloader.Win32.Agent.nwk (Kaspersky), TR/Crypt.XPACK.Gen (Avira), Troj/Tibs-UH (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:

Low

Infection Channel 1 : Spammed via email


Description: 

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

TROJ_NUWAR.ABK Behavior Diagram

Malware Overview

This Trojan arrives as attachment to email messages spammed by another malware or a malicious user. It may also be downloaded from remote sites by other malware.

Upon execution, it drops a copy of itself. It then registers itself as a system service to ensure its automatic execution at every system startup. It does this by creating a registry key and entries.

It also accesses several Web sites to download files, which Trend Micro detects as TROJ_AGENT.RH and TROJ_NUWAR.AA. As a result, routines of the downloaded Trojans are also exhibited on the affected system.

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

Description created: Apr. 30, 2008 5:25:19 PM GMT -0800

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