Piecing Together the Puzzle: A Qilin Ransomware Investigation

Huntress Labs investigated a Qilin ransomware incident where a rogue ScreenConnect instance (pointing to 94.156.232.40) was installed via malicious MSI, three files (r.ps1, s.exe, ss.exe) were transferred, Windows Defender was disabled, and ransom notes were observed; analysts used Event Logs, PCA logs, AmCache, and VirusTotal to recover artifacts and hashes despite the agent being installed post-incident.