Threat Encyclopedia

TROJ_MDLOAD.PGTY

Publish date: October 14, 2014

ALIASES:

Win32/Exploit.CVE-2014-4114.A (ESET), Trojan.PPDropper (Symantec)

PLATFORM:

Windows

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

  • Threat Type:Trojan

  • Destructiveness:No

  • Encrypted: No

  • In the wild: Yes

OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet, Spammed via email


This malware is the detection for the zero-day exploit leveraging the vulnerability covered under CVE-2014-4114, also known as Sandworm.

To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It takes advantage of software vulnerabilities to allow a remote user or malware/grayware to download files.

It is used to load and execute a file.

TECHNICAL DETAILS

File Size:

108,917 bytes

File Type:

Other

Initial Samples Received Date:

14 Oct 2014

Payload:

Executes files

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Download Routine

This Trojan takes advantage of the following software vulnerabilities to allow a remote user or malware/grayware to download files:

  • CVE-2014-4114

Other Details

This Trojan is used to load and execute the following file:

  • \\{BLOCKED}.{BLOCKED}.85.122\public\slides.inf - detected as INF_BLACKEN.A
  • \\{BLOCKED}.{BLOCKED}.85.122\public\slide1.gif - detected as BKDR_BLACKEN.A

More information on this vulnerability can be found below:

SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

11.210.05

FIRST VSAPI PATTERN DATE:

14 Oct 2014

VSAPI OPR PATTERN File:

11.211.00

VSAPI OPR PATTERN Date:

14 Oct 2014

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

Remove the malware/grayware file dropped/downloaded by TROJ_MDLOAD.PGTY. (Note: Please skip this step if the threat(s) listed below have already been removed.)

    • INF_BLACKEN.A
    • BKDR_BLACKEN.A

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_MDLOAD.PGTY. 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.
 https://technet.microsoft.com/en-us/library/security/MS14-060


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