Sign In with your
Trend Micro Account
Need Help?
Need More Help?

Create a technical support case if you need further support.

SECURITY ALERT: PetitPotam Exploit Detection, Protection and Response

    • Updated:
    • 5 Aug 2021
    • Product/Version:
    • Platform:
Summary
At the end of July, Microsoft released KB5005413: Mitigating NTLM Attacks on Active Directory Certificate Services (AD CS) and has been commonly referred to as "PetitPotam."

PetitPotam is an NTLM relay attack that would allow an attacker to take over an entire Windows domain.

Vulnerable configurations including using Active Directory Certificate Services (AD CS) with:
 
  • Certificate Authority Web Enrollment
  • Certificate Enrollment Web Service
Details
Public

Mitigation and Protection

Microsoft recommends that potentially impacted enable Extended Protection for Authentication (EPA) and disable HTTP on AD CS servers. Additional information and steps for this mitigation and additional information is found on the Microsoft site.

Trend Micro Protection

The following rules, filters and patterns can help customers to protect themselves against new or further exploitation attempts in combination with patching and/or other manual mitigation steps.

Trend Micro Cloud One – Workload Security and Deep Security IPS Rules
  • Rule 1011058:  Identified DCERPC EfsRpcOpenFileRaw Call Over SMB Protocol
Trend Micro Cloud One – Network Security and TippingPoint IPS Filters
  • Filter 40036: RPC: Microsoft Windows EfsRpcOpenFileRaw Request
Trend Micro is continuing to aggressively investigate other forms of detection and protection to assist our customers, but we do want to continue to reiterate that the primary recommendation is to apply the official Microsoft patches as soon as possible. We will continue to update this article and our customers if/when additional layers of protection become available.

References

Premium
Internal
Partner
Rating:
Category:
Remove a Malware / Virus
Solution Id:
000288069
Feedback
Did this article help you?

Thank you for your feedback!


*This form is automated system. General questions, technical, sales, and product-related issues submitted through this form will not be answered.

If you need additional help, you may try to contact the support team. Contact Support

To help us improve the quality of this article, please leave your email here so we can clarify further your feedback, if neccessary:
We will not send you spam or share your email address.

*This form is automated system. General questions, technical, sales, and product-related issues submitted through this form will not be answered.