Bazar, No Ryuk?
Intro In the fall of 2020, Bazar came to prominence when several campaigns delivered Ryuk ransomware. While Bazar appeared to drop-off in December, new campaigns have sprung up recently, using … Read More
All That for a Coinminer?
A threat actor recently brute forced a local administrator password using RDP and then dumped credentials using Mimikatz. They not only dumped LogonPasswords but they also exported all Kerberos tickets. … Read More
Trickbot Still Alive and Well
In October of 2020, the group behind the infamous botnet known as Trickbot had a bad few days. The group was under concerted pressure applied by US Cyber Command infiltrating … Read More
Defender Control
Defender Control is a free software utility we’ve come across in various intrusions. The creators describe it by saying the following: What is certain however is that it [Windows Defender] … Read More
PYSA/Mespinoza Ransomware
Intro Over the course of 8 hours the PYSA/Mespinoza threat actors used Empire and Koadic as well as RDP to move laterally throughout the environment, grabbing credentials from as many … Read More
Cryptominers Exploiting WebLogic RCE CVE-2020-14882
Intro Towards the end of October, we started seeing attackers take advantage of a WebLogic RCE vulnerability (CVE-2020-14882). Recently, SANS ISC talked about this vulnerability being exploited in the wild, … Read More
Ryuk Speed Run, 2 Hours to Ransom
Intro Since the end of September Ryuk has been screaming back into the news. We’ve already covered 2 cases in that timeframe. We’ve seen major healthcare providers, managed service providers, … Read More
Ryuk in 5 Hours
Intro The Ryuk threat actors went from a phishing email to domain wide ransomware in 5 hours. They escalated privileges using Zerologon (CVE-2020-1472), less than 2 hours after the initial … Read More
Ryuk’s Return
Intro The Ryuk group went from an email to domain wide ransomware in 29 hours and asked for over $6 million to unlock our systems. They used tools such as … Read More
NetWalker Ransomware in 1 Hour
The threat actor logged in through RDP, attempted to run a Cobalt Strike Beacon, and then dumped memory using ProcDump and Mimikatz. Next, they RDPed into a Domain Controller, minutes … Read More