Check Point Advisories

Microsoft Office Mail Attachment Containing Malicious Downloader

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0136
Date Published:	23 Feb 2016
Severity:	Critical
Last Updated:	Wednesday 24 February, 2016
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A Microsoft Office Mail attachment containing a malicious downloader was observed as part of Locky ransomware campaign. A remote attacker could send spam e-mails including those downloaders and convince users to manually enable them. This would allow the malicious code to run and infect the target system.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the Microsoft Office Mail Attachment Containing Malicious Downloader protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: SMTP Protection Violation.
Attack Information: Microsoft Office Mail Attachment Containing Malicious Downloader