BKDR_ZZPEG.SM

October 31, 2013
 Analysis by: Alvin Bacani
 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet

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

  TECHNICAL DETAILS

File Size:

5,207 bytes

File Type:

JPG, JPEG

Initial Samples Received Date:

22 Jul 2013

Arrival Details

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

NOTES:
This is Trend Micro's detection for .JPEG files with malicious script embedded on the file's EXIF Header.

A component malwarel uses the embedded code on the JPEG to execute an HTTP POST command with the data "zz1".

The embedded code can be found on the Camera Make and Camera Model of the Header.

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

10.170.05

FIRST VSAPI PATTERN DATE:

22 Jul 2013

VSAPI OPR PATTERN File:

10.171.00

VSAPI OPR PATTERN Date:

22 Jul 2013

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

Scan your computer with your Trend Micro product to delete files detected as BKDR_ZZPEG.SM. 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.


Did this description help? Tell us how we did.