Analysis by: Miguel Carlo Ang
 Modified by: Anthony Joe Melgarejo
ALIASES:

Exploit:SWF/CVE-2015-3113 (Microsoft), Exploit-CVE2015-3113 (McAfee), Trojan.Swifi (Symantec)

 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 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: 14,978 bytes
File Type: SWF
Memory Resident: Yes
Initial Samples Received Date: 25 Jun 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 file allows remote arbitrary code to execute on the affected system, allowing remote malicious users to deliver and execute other routines.

It affects the following Adobe versions:

  • Adobe Flash Player 18.0.0.161 and earlier versions for Windows and Macintosh
  • Adobe Flash Player Extended Support Release version 13.0.0.292 and earlier 13.x versions for Windows and Macintosh
  • Adobe Flash Player 11.2.202.466 and earlier 11.x versions for Linux

  SOLUTION

Minimum Scan Engine: 9.700
FIRST VSAPI PATTERN FILE: 11.754.05
FIRST VSAPI PATTERN DATE: 26 Jun 2015
VSAPI OPR PATTERN File: 11.755.00
VSAPI OPR PATTERN Date: 27 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 SWF_EXPLOYT.S. 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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