Today, I published the following diary on isc.sans.edu: “Python Malware Using Postgresql for C2 Communications“: For modern malware, having access to its C2 (Command and control) is a crucial point. There are many ways to connect to a C2 server using tons of protocols, but today, HTTP remains very common
published the following diary on isc.sans.edu: “Waiting for the C2 to Show Up“: Keep this in mind: “Patience is key”. Sometimes when you are working on a malware sample, you depend on online resources. I’m working on a classic case: a Powershell script decodes then injects a shellcode into a process. There
I published the following diary on isc.sans.edu: “C2 Activity: Sandboxes or Real Victims?“: In my last diary, I mentioned that I was able to access screenshots exfiltrated by the malware sample. During the first analysis, there were approximately 460 JPEG files available. I continued to keep an eye on the
I published the following diary on isc.sans.edu: “Pastebin.com Used As a Simple C2 Channel“: With the growing threat of ransomware attacks, they are other malicious activities that have less attention today but they remain active. Think about crypto-miners. Yes, attackers continue to mine Monero on compromised systems. I spotted an interesting
I published the following diary on isc.sans.edu: “Powershell Bot with Multiple C2 Protocols“: I spotted another interesting Powershell script. It’s a bot and is delivered through a VBA macro that spawns an instance of msbuild.exe This Windows tool is often used to compile/execute malicious on the fly (I already wrote a diary about this
