Analysis by: Rheniel Rhay Ramos

 ALIASES:

Mal/Spectre-F (Sophos); Exploit.Spectre.POC (Malwarebytes); Exploit.Spectre.H (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: 104,448 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 09 Jan 2018
Payload: 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:
    • The Java plug-in for web browsers relies on the cross platform plugin architecture NPAPI, which has long been, and currently is, supported by all major web browsers. Google announced in September 2013 plans to remove NPAPI support from Chrome by "the end of 2014", thus effectively dropping support for Silverlight, Java, Facebook Video, and other similar NPAPI-based plugins. Recently, Google has revised their plans and now state that they plan to completely remove NPAPI by late 2015. As it is unclear if these dates will be further extended or not, we strongly recommend Java users consider alternatives to Chrome as soon as possible. Instead, we recommend Firefox, Internet Explorer, and Safari as longer-term options. As of April 2015, starting with Chrome Version 42, Google has added an additional step to configuring NPAPI-based plugins like Java to run.

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: 09 Jan 2018
VSAPI OPR PATTERN File: 13.923.00
VSAPI OPR PATTERN Date: 10 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.POF. 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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