Analysis by: Jennifer Gumban
ALIASES:

a variant of SWF/Exploit.CVE-2016-4117.A trojan, a variant of SWF/Exploit.CVE-2016-4117.A trojan (NOD32); Exploit.SWF.CVE-2016-4117.A (Bitdefender)

 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

This Trojan executes when a user accesses certain websites where it is hosted.

  TECHNICAL DETAILS

File Size: 52,568 bytes
File Type: SWF
Memory Resident: No
Initial Samples Received Date: 24 May 2016

Arrival Details

This Trojan executes when a user accesses certain websites where it is hosted.

This malware arrives via the following means:

  • component of an exploit kit
  • via http://81q0k1sfel3a9.{BLOCKED}ds.top/f3a13218f7b635df39e522ae4cbcfb42?win%2021,0,0,213

Other Details

For more information on the aforementioned vulnerabilities, please see the following pages:

It does the following:

  • Uses the exploit to pages that is installed with Flash version of up to 21.0.0.213.

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 12.546.06
FIRST VSAPI PATTERN DATE: 24 May 2016
VSAPI OPR PATTERN File: 12.547.00
VSAPI OPR PATTERN Date: 25 May 2016

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Scan your computer with your Trend Micro product to delete files detected as SWF_CVE20164117.A. 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 this security patch 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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