Writing a BugSleep C2 server and detecting its traffic with Snort
This blog will demonstrate the practice and methodology of reversing BugSleep’s protocol, writing a functional C2 server, and detecting this traffic with Snort.
UAT-5647 targets Ukrainian and Polish entities with RomCom malware variants
Cisco Talos has observed a new wave of attacks active since at least late 2023, from a Russian speaking group we track as “UAT-5647”, against Ukrainian government entities and unknown Polish entities
MoonPeak malware from North Korean actors unveils new details on attacker infrastructure
Cisco Talos has uncovered a new remote access trojan (RAT) family we are calling “MoonPeak.” This a XenoRAT-based malware, which is under active development by a North Korean nexus cluster we are calling “UAT-5394.”
Exploring malicious Windows drivers (Part 2): the I/O system, IRPs, stack locations, IOCTLs and more
As the second entry in our “Exploring malicious Windows drivers” series, we will continue where the first left off: Discussing the I/O system and IRPs.
Operation Celestial Force employs mobile and desktop malware to target Indian entities
Cisco Talos is disclosing a new malware campaign called “Operation Celestial Force” running since at least 2018. It is still active today, employing the use of GravityRAT, an Android-based malware, along with a Windows-based malware loader we track as “HeavyLift.”
DarkGate switches up its tactics with new payload, email templates
DarkGate has been observed distributing malware through Microsoft Teams and even via malvertising campaigns.
LilacSquid: The stealthy trilogy of PurpleInk, InkBox and InkLoader
Cisco Talos is disclosing a new suspected data theft campaign, active since at least 2021, we attribute to an advanced persistent threat actor (APT) we’re calling “LilacSquid.” Multiple TTPs utilized in this campaign bear some overlap with North Korean APT groups.
New details on TinyTurla’s post-compromise activity reveal full kill chain
We now have new information on the entire kill chain this actor uses, including the tactics, techniques and procedures (TTPs) utilized to steal valuable information from their victims and propagate through their infected enterprises.