Threat Research
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Identity Attack Watch: June 2021
- Semperis Research Team
Cyberattacks targeting Active Directory are on the upswing, putting pressure on AD, identity, and security teams to monitor the constantly shifting AD-focused threat landscape. To help IT pros better understand and guard against attacks involving AD, the Semperis Research Team offers this monthly roundup of recent cyberattacks that used AD…
Identity Attack Watch: May 2021
- Semperis Research Team
Cyberattacks targeting Active Directory are on the upswing, putting pressure on AD, identity, and security teams to monitor the constantly shifting AD-focused threat landscape. To help IT pros better understand and guard against attacks involving AD, the Semperis Research Team offers this monthly roundup of recent cyberattacks that used AD…
How to Defend Against Ransomware-as-a-Service Groups That Attack Active Directory
- Semperis Team
Concern about the Colonial Pipeline ransomware attack by DarkSide has expanded beyond the cybersecurity industry and into the consciousness of the everyday consumer—an indicator of the extensive implications the attack has on the global economy. In response, the Biden administration issued an executive order and held a press conference, and…
Hafnium Attack Timeline
- Sean Deuby | Principal Technologist, Americas
The attacks on Microsoft Exchange servers around the world by Chinese state-sponsored threat group Hafnium are believed to have affected over 21,000 organizations. The impact of these attacks is growing as the four zero-day vulnerabilities are getting picked up by new threat actors. While the world was introduced to these…
DnsAdmins Revisited
- Yuval Gordon
How Potential Attackers Can Achieve Privileged Persistence on a DC through DnsAdmins The Semperis Research Team recently expanded on previous research showing a feature abuse in the Windows Active Directory (AD) environment where users from the DnsAdmins group could load an arbitrary DLL into a DNS service running on a…
New Research: Detecting DCShadow on Rogue Hosts
- Darren Mar-Elia | VP of Products
10,000-foot view: Many of us are familiar with the variety of tools, attacks, and adversaries that focus on breaching Active Directory. With the release in 2018 of DCShadow, another highly effective vector was added to that ever-increasing list. To the credit of the research team, along with the exploit, they…
Understanding Group Policy Privilege Escalation in CVE-2020-1317
- Darren Mar-Elia | VP of Products
Last month, Microsoft released an advisory for CVE-2020-1317 which describes a privilege escalation vulnerability in Group Policy. This was further detailed by the discoverer of the vulnerability on the Cyberark website. The nature of this issue is interesting and worth understanding. For years, Group Policy has had this dichotomy built into its…
