Threat Encyclopedia

SWF_EXPLOIT.MJST

Publish date: February 02, 2015

ANALYSIS BY

Francis Xavier Antazo


PLATFORM:

Windows

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

  • Threat Type:Trojan

  • Destructiveness:No

  • Encrypted: Yes

  • In the wild: Yes

OVERVIEW

Infection Channel:

Downloaded from the Internet


This malware exploits an Adobe Flash zero-day vulnerability. When a system is exploited successfully, it allows a remote user to execute arbitrary code on the system.

To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.

This Trojan arrives as a component bundled with malware/grayware packages.

It requires its main component to successfully perform its intended routine.

TECHNICAL DETAILS

File Size:

29,431 bytes

File Type:

SWF

Memory Resident:

Yes

Initial Samples Received Date:

01 Feb 2015

Arrival Details

This Trojan arrives as a component bundled with malware/grayware packages.

Other Details

This Trojan requires its main component to successfully perform its intended routine.

It is a zero-day exploit for the following vulnerability:

NOTES:

The following are the affected software versions:

  • Adobe Flash Player 16.0.0.296 and earlier versions for Windows and Macintosh
  • Adobe Flash Player 13.0.0.264 and earlier 13.x versions

Note that Adobe Flash Player version 11.x and earlier do not support the functionality affected by the specific vulnerability.

SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

11.452.02

FIRST VSAPI PATTERN DATE:

01 Feb 2015

VSAPI OPR PATTERN File:

11.453.00

VSAPI OPR PATTERN Date:

02 Feb 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 SWF_EXPLOIT.MJST. 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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