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HTML_EXPLOYT.XTZ

May 22, 2015
 Analysis by: RonJay Kristoffer Caragay
 ALIASES:

VirTool:JS/Obfuscator.FN (Microsoft); JS/Exploit-Angler.a (McAfee); Exploit.JS.Agent.bqq (Kaspersky); JS/Exploit.Agent.NJG (ESET-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.

However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

84,901 bytes

File Type:

HTML, HTM

Initial Samples Received Date:

14 May 2015

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 connects to the following possibly malicious URL:

  • http://{BLOCKED}theattempering.cpaco-op.com/0wIn5o3r4wHI7cPnhJnhDlS21pgylx87sK434KfmnjnYHPEu

However, as of this writing, the said sites are inaccessible.

  SOLUTION

Minimum Scan Engine:

9.750

FIRST VSAPI PATTERN FILE:

11.668.05

FIRST VSAPI PATTERN DATE:

14 May 2015

VSAPI OPR PATTERN File:

11.669.00

VSAPI OPR PATTERN Date:

15 May 2015

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 HTML_EXPLOYT.XTZ. 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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