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SECURITY ADVISORIES
Jul 29, 2021
UPDATE: PetitPotam NTLM Relay Attack
THE THREAT PetitPotam is a variant of the NTLM Relay attack discovered by security researcher Gilles Lionel. It is tracked as an authentication bypass vulnerability in Active Directory (Certificate Services); currently no CVE identifier has been assigned to this vulnerability. Proof of Concept (PoC) code released last week [1] relies on the Encrypting File System Remote (EFSRPC) protocol to…
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eSentire is The Authority in Managed Detection and Response Services, protecting the critical data and applications of 1000+ organizations in 70+ countries from known and unknown cyber threats. Founded in 2001, the company’s mission is to hunt, investigate and stop cyber threats before they become business disrupting events.
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Jul 12, 2021
Tecala and eSentire Partner to Protect Enterprises across APAC from Business-Disrupting Cyber Attacks
Sydney, 12 July, 2021 - Tecala, Australia’s award-winning technology services and IT consulting provider, today announced it has chosen eSentire, the global Authority in Managed Detection and Response (MDR) cybersecurity services, as their exclusive MDR solution provider in Australia and New Zealand. This partnership will enable Tecala to augment its cybersecurity practice and offer enterprises…
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Our award-winning partner program offers financial rewards, sales and marketing tools and personalized training. Accelerate your business and grow your revenue by offering our world-class Managed Detection and Response (MDR) services.
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Security advisories — Feb 26, 2019

Ransomware Variant (CryptoFortress) Advisory

4 min read

We have discovered a new ransomware (malware) variant referenced as CryptoFortress in the wild and would like to provide additional information as to what we have discovered at this time. Please find below a more detailed investigation into the behavior of and mitigation methods applicable to CryptoFortress ransomware.

What We Know

Behavior of CryptoFortress:

Additional Information:

eSentire Defenses

eSentire features that help protect you:

Further Protection

How to further protect yourself from this emerging threat:

User awareness (Infections are occurring from users clicking on a malicious payload that is being delivered via spam email attachments).

eSentire recommends blocking .zip and .exe file extensions on your SMTP server.

Back up important data offline.

If you are running Windows 7 Ultimate/Enterprise or Windows 8 Pro/Enterprise you have the ability to use AppLocker. AppLocker is able to defend against CryptoFortress infections because it can require all programs to be signed by a legitimate software publisher.

Alternatively, AppLocker has the ability to whitelist folders.