Cobalt Strike, a Defender’s Guide – Part 2
Our previous report on Cobalt Strike focused on the most frequently used capabilities that we had observed. In this report, we will focus on the network traffic it produced, and provide … Read More
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Cobalt Strike, a Defender’s Guide
Intro In our research, we expose adversarial Tactics, Techniques and Procedures (TTPs) as well as the tools they use to execute their mission objectives. In most of our cases, we … Read More
BazarCall to Conti Ransomware via Trickbot and Cobalt Strike
Intro This report will go through an intrusion that went from an Excel file to domain wide ransomware. The threat actors used BazarCall to install Trickbot in the environment which … Read More
IcedID and Cobalt Strike vs Antivirus
Intro Although IcedID was originally discovered back in 2017, it did not gain in popularity until the latter half of 2020. We have now analyzed a couple ransomware cases in … Read More
Hancitor Continues to Push Cobalt Strike
First observed in 2014, Hancitor (also known as Chanitor and Tordal) is a downloader trojan that has been used to deliver multiple different malware such as Pony, Vawtrak, and DELoader. … Read More
Emotet Strikes Again – LNK File Leads to Domain Wide Ransomware
In June of 2022, we observed a threat actor gaining access to an environment via Emotet and operating over a eight day period. During this time period, multiple rounds of … Read More
From OneNote to RansomNote: An Ice Cold Intrusion
Key Takeaways We provide a range of services, one of which is our Threat Feed, specializing in monitoring Command and Control frameworks like Cobalt Strike, Metasploit, Sliver, Viper, Mythic, Havoc, … Read More
SEO Poisoning to Domain Control: The Gootloader Saga Continues
Key Takeaways More information about Gootloader can be found in the following reports: The DFIR Report, GootloaderSites, Mandiant, Red Canary, & Kroll. An audio version of this report can be … Read More
Buzzing on Christmas Eve: Trigona Ransomware in 3 Hours
Key Takeaways In late December 2022, we observed threat actors exploiting a publicly exposed Remote Desktop Protocol (RDP) host, leading to data exfiltration and the deployment of Trigona ransomware. On … Read More
Lets Open(Dir) Some Presents: An Analysis of a Persistent Actor’s Activity
This report is a little different than our typical content. We were able to analyze data from a perspective we typically don’t get to see… a threat actor’s host! In … Read More
SQL Brute Force Leads to BlueSky Ransomware
In December 2022, we observed an intrusion on a public-facing MSSQL Server, which resulted in BlueSky ransomware. First discovered in June 2022, BlueSky ransomware has code links to Conti and … Read More
NetSupport Intrusion Results in Domain Compromise
NetSupport Manager is one of the oldest third-party remote access tools still currently on the market with over 33 years of history. This is the first time we will report … Read More
From ScreenConnect to Hive Ransomware in 61 hours
In 2022, The DFIR Report observed an increase in the adversarial usage of Remote Management and Monitoring (RMM) tools. When compared to post-exploitation channels that heavily rely on terminals, such … Read More
Threat Intelligence
Threat Feed Our Threat Feed service specializes in monitoring Command and Control frameworks like Cobalt Strike, Metasploit, Sliver, Viper, Mythic, Havoc, Meterpreter, and more. This feed comprises lists of IP … Read More
HTML Smuggling Leads to Domain Wide Ransomware
We’ve previously reported on a Nokoyawa ransomware case in which the initial access was via an Excel macro and IcedID malware. This case, which also ended in Nokoyawa Ransomware, involved … Read More
A Truly Graceful Wipe Out
In this intrusion, dated May 2023, we observed Truebot being used to deploy Cobalt Strike and FlawedGrace (aka GraceWire & BARBWIRE) resulting in the exfiltration of data and the deployment … Read More
IcedID Macro Ends in Nokoyawa Ransomware
Threat actors have moved to other means of initial access, such as ISO files combined with LNKs or OneNote payloads, but some appearances of VBA macros in Office documents can … Read More
Malicious ISO File Leads to Domain Wide Ransomware
IcedID continues to deliver malspam emails to facilitate a compromise. This case covers the activity from a campaign in late September of 2022. Post exploitation activities detail some familiar and … Read More
2022 Year in Review
As we move into the new year, it’s important to reflect on some of the key changes and developments we observed and reported on in 2022. This year’s year-in-review report … Read More
Collect, Exfiltrate, Sleep, Repeat
In this intrusion from August 2022, we observed a compromise that was initiated with a Word document containing a malicious VBA macro, which established persistence and communication to a command … Read More
ShareFinder: How Threat Actors Discover File Shares
Many of our reports focus on adversarial Tactics, Techniques, and Procedures (TTPs) along with the tools associated with them. After gaining a foothold in an environment, one challenge for all … Read More