Analysis by: David John Agni
ALIASES:

SWF/Exploit.ExKit.AH (ESET-NOD32), Script.SWF.C167 (F-Secure), Trojan.SWF.Exploit (Ikarus)

 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: 12,765 bytes
File Type: SWF
Memory Resident: Yes
Initial Samples Received Date: 19 Mar 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:

Once a compromised website is visited, the user's browser with a vulnerable version of Adobe Flash loads a specially-crafted Adobe Flash file. This exploit Adobe Flash file allows remote arbitrary code to execute on the affected system. Thus, allowing remote malicious users to deliver and execute payload on the affected system.

The following are affected software versions:

  • Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 versions for Windows and Macintosh
  • Adobe Flash Player before 11.2.202.451 on Linux

  SOLUTION

Minimum Scan Engine: 9.700
FIRST VSAPI PATTERN FILE: 11.550.05
FIRST VSAPI PATTERN DATE: 19 Mar 2015
VSAPI OPR PATTERN File: 11.551.00
VSAPI OPR PATTERN Date: 20 Mar 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.OJF. 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.

Step 4

Download and apply these security patches Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.


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