JS_SPRATS.EUT

January 07, 2014
 Analysis by: Mark Joseph Manahan
 ALIASES:

Troj/Bdoor-BFF (Sophos), Hacktool.Jsprat (Symantec)

 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:
 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:

6,284 bytes

File Type:

JS

Initial Samples Received Date:

17 Dec 2013

Arrival Details

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

NOTES:

This Trojan executes functions depending on the parameters passed on to it.

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

10.478.05

FIRST VSAPI PATTERN DATE:

17 Dec 2013

VSAPI OPR PATTERN File:

10.479.00

VSAPI OPR PATTERN Date:

17 Dec 2013

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_SPRATS.EUT 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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