Vx-Underground

Introduction Phobos ransomware has been previously observed impersonating the well-known malware research community Vx-Underground. Initial access methods for Phobos are varied, but it has been known for exploiting software vulnerabilities, launching phishing campaigns to spread malicious payloads, and accessing hosts through external services such as brute forcing RDP. Despite its significant operational impact, with Phobos accounting for a notable 4% of all submissions to the ID Ransomware service in 2023, it hasn’t achieved the notoriety of other Ransomware-as-a-Service (RaaS) operations like Lockbit or REvil....