HTML_DNSCHA.B

June 26, 2015
 Analysis by: John Karlo Agon
 ALIASES:

HTML:DNSChanger-J [Trj] (Avast), Troj/Iframe-MV (Sophos)

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

  TECHNICAL DETAILS

File Size:

54,900 bytes

File Type:

HTML, HTM

Memory Resident:

No

Initial Samples Received Date:

24 Jun 2015

Arrival Details

This Trojan 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:

  • {BLOCKED}.{BLOCKED}.4.4

NOTES:

This malware uses a specific user name and password to access the router.

  SOLUTION

Minimum Scan Engine:

9.750

FIRST VSAPI PATTERN FILE:

11.750.01

FIRST VSAPI PATTERN DATE:

19 Jun 2015

VSAPI OPR PATTERN File:

11.751.00

VSAPI OPR PATTERN Date:

20 Jun 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_DNSCHA.B. 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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