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TROJ_RTFCVE201711882.I

December 12, 2017
 Analysis by: John Anthony Banes
 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:

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


This Exploit 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.

Once a malware successfully exploits the said vulnerability, it causes certain actions to be done on the system. It takes advantage of certain vulnerabilities. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

51,731 bytes

File Type:

RTF

Memory Resident:

No

Initial Samples Received Date:

05 Dec 2017

Payload:

Connects to URLs/IPs, Exploits vulnerability

Arrival Details

This Exploit 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.

Other Details

Once a malware successfully exploits the said vulnerability, it causes the following actions to be done on the system:

  • It runs cmd.exe to access and execute the following:
    • \{BLOCKED}.{BLOCKED}.73.154\s\a.exe

It takes advantage of the following vulnerabilities:

However, as of this writing, the said sites are inaccessible.

  SOLUTION

Minimum Scan Engine:

9.850

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 TROJ_RTFCVE201711882.I. 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:

Step 3

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.


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