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Threat Encyclopedia

HTML_AGENT.APAY

Malware type: HTML

Aliases: Mal/Badsrc-C (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

Description: 

This malicious HTML script may be hosted on a Web site and run when a user accesses the said Web site.

It redirects an affected user a certain URL that hosts a malicious script detected by Trend Micro as JS_DLOADER.JYT.

The said script, in turn, downloads a file that is detected as TROJ_AGENT.WPA. As a result, the routines of the downloaded file may be exhibited on the system.

For additional information about this threat, see:

Description created: May. 19, 2008 4:53:55 PM GMT -0800


TECHNICAL DETAILS


File type: Script

Size of malware: 461 Bytes

Initial samples received on: May 19, 2008

Related toJS_DLOADER.JYT

Payload 1: Downloads files

Details:

This malicious HTML script may be hosted on a Web site and run when a user accesses the said Web site.

It redirects an affected user to the following URL:

  • http://{BLOCKED}ilds.cn/vv.js � malicious script detected by Trend Micro as JS_DLOADER.JYT

The said script, in turn, downloads a file that is detected as TROJ_AGENT.WPA. As a result, the routines of the downloaded file may be exhibited on the system.

This malicious HTML script runs on Windows 98, ME, NT, 2000, XP, Server 2003.

Analysis By: Kathleen Mae Notario


SOLUTION


Minimum scan engine version needed: 8.300

Pattern file needed: 5.285.00

Pattern release date: May 19, 2008


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.

Solution:

Note: Close all instances of Internet Explorer before proceeding with the following solution. To fully remove all associated malware, perform the clean solution for JS_DLOADER.JYT.

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 HTML_AGENT.APAY and TROJ_AGENT.WPA. 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.




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