Analysis by: Byron Jon Gelera
ALIASES:

JS/FakeJquery.G!tr (Fortinet); JS/Redir.27_F (AVG); JS/TrojanDownloader.FakejQuery.B trojan (NOD32)

 PLATFORM:

Windows

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

  • 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. It may be hosted on a website and run when a user accesses the said website.

It redirects browsers to certain sites.

  TECHNICAL DETAILS

File Size: 31,375 bytes
File Type: HTML, HTM
Memory Resident: No
Initial Samples Received Date: 05 Jun 2017

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.

It may be hosted on a website and run when a user accesses the said website.

Other Details

This Trojan redirects browsers to the following sites:

  • http://www.{BLOCKED}ina.com/js/jquery.min.php?key=b64&utm_campaign=J18171&utm_source={value}&utm_medium=&utm_content={value}&utm_term={value}

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 13.452.04
FIRST VSAPI PATTERN DATE: 05 Jun 2017
VSAPI OPR PATTERN File: 13.453.00
VSAPI OPR PATTERN Date: 06 Jun 2017

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Close all opened browser windows

Step 3

Scan your computer with your Trend Micro product to delete files detected as JS_REDIR.XXQN. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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