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SWF_EXPLOIT.YYLQ

June 18, 2016
 Analysis by: Rhena Inocencio
 ALIASES:

a variant of SWF/Exploit.Agent.HQ (ESET), Script.SWF.C362 (F-Secure)

 PLATFORM:

Windows

 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.

It inserts an IFRAME tag that redirects users to certain URLs.

  TECHNICAL DETAILS

File Size:

16,090 bytes

File Type:

SWF

Memory Resident:

Yes

Initial Samples Received Date:

09 Jun 2016

Arrival Details

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

Other Details

This Trojan inserts an IFRAME tag that redirects users to the following URLs:

  • {website hosting the SWF}{random generated characters}.{variable1}

    where {variable1} can be any of the following:

    • html
    • htm
    • jpeg
    • png
    • jpg
    • gif
    • js

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

12.580.03

FIRST VSAPI PATTERN DATE:

09 Jun 2016

VSAPI OPR PATTERN File:

12.581.00

VSAPI OPR PATTERN Date:

10 Jun 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

Close all opened browser windows

Step 4

Scan your computer with your Trend Micro product to delete files detected as SWF_EXPLOIT.YYLQ. 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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