JS_MEDFOS.TP

February 14, 2013
 Analysis by: Abraham Latimer Camba
 ALIASES:

Trojan:JS/Medfos.B (Microsoft), [manager.js]:Medfos.ak (McAfee), JS/Redirector.NCG trojan (NOD32), Trojan.JS.Medfos.b (v) (Sunbelt), JS/Redir.BP (AVG)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

This is the Trend Micro detection for files that contain a malicious script. It redirects browsers to certain sites.

  TECHNICAL DETAILS

File Size:

6,525 bytes

File Type:

Script

Initial Samples Received Date:

05 Feb 2013

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other Details

This is the Trend Micro detection for files that contain a malicious script.

It redirects browsers to the following sites:

  • http://{BLOCKED}e-instant-search.com/js/disable.js