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TROJ_CVE20175753.POI

January 24, 2018
 Analysis by: Rheniel Rhay Ramos
 ALIASES:

Mal/Spectre-A (Sophos); Exploit.Spectre.POC (Malwarebytes); Exploit.Spectre.R (BitDefender)

 PLATFORM:

Windows

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

  • Threat Type: Exploit

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

This proof of concept attempts to exploit a vulnerability known as Spectre. If successful, it allows exploitation of said vulnerability in Windows systems. Exploitation of the vulnerability is difficult to mitigate as of this writing because it requires changes in the hardware.

This Exploit 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 certain vulnerabilities.

  TECHNICAL DETAILS

File Size:

118,272 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

12 Jan 2018

Payload:

Displays message/message boxes, Exploits vulnerability

Arrival Details

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

Other Details

This Exploit does the following:

  • It loads the following string into the memory then uses the exploit to read and display the string via a console:
    • get vasry uoidu ara Sqeeameeh Oeeifeegee

It takes advantage of the following vulnerabilities:

NOTES:

This is the Trend Micro detection for the proof of concept (PoC) sample of CVE-2017-5753.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.922.04

FIRST VSAPI PATTERN DATE:

12 Jan 2018

VSAPI OPR PATTERN File:

13.923.00

VSAPI OPR PATTERN Date:

13 Jan 2018

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 TROJ_CVE20175753.POI. 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 the following Trend Micro Support pages for more information:


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