Malware type: Trojan

Aliases: Generic.dx (McAfee), Trojan.Dropper (Symantec), TR/Drop.Remotewatch (Avira), Mal/Generic-A (Sophos), TrojanDropper:Win32/Hupigon (Microsoft)

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:


Distribution potential:



This Trojan may arrive as a file downloaded or dropped by other malware. When executed, it drops a file which Trend Micro detects as ADW_LOOPAD.A.

For additional information about this threat, see:

Description created: Sep. 9, 2006 12:50:55 PM GMT -0800


File type: PE

Memory resident:  No

Size of malware: 308,736 Bytes

Initial samples received on: Aug 2, 2006

Related toADW_LOOPAD.A

Payload 1: Drops files


This Trojan may arrive as a file downloaded or dropped by other malware. When executed, it drops the file alg32.exe The said file is detected by Trend Micro as ADW_LOOPAD.A.

It runs on Windows 98, ME, NT, 2000, XP, and Server 2003.

Analysis By: Melvin Dantis Dadios


Minimum scan engine version needed: 7.500

Pattern file needed: 3.632.06

Pattern release date: Aug 2, 2006

Important note: The "Minimum scan engine" refers to the earliest Trend Micro scan engine version guaranteed to detect this threat. However, Trend Micro strongly recommends that you update to the latest version in order to get comprehensive protection. Download the latest scan engine here.


Note: To fully remove all associated adware, perform the clean solution for ADW_LOOPAD.A.

Important Windows ME/XP Cleaning Instructions

Users running Windows ME and XP must disable System Restore to allow full scanning of infected computers.

Users running other Windows versions can proceed with the succeeding solution set(s).

Running Trend Micro Antivirus

If you are currently running in safe mode, please restart your computer normally before performing the following solution.

Scan your computer with Trend Micro antivirus and delete files detected as TROJ_DROPPER.BKR. To do this, Trend Micro customers must download the latest virus pattern file and scan their computer. Other Internet users can use HouseCall, the Trend Micro online virus scanner.

Trend Micro offers best-of-breed antivirus and content-security solutions for your corporate network, small and medium business, mobile device or home PC.