30/06/2024
PHOBOS RANSOMWARE MAKES A COMEBACK
Phobos ransomware wreaked havoc from when it emerged in 2018 until Q3 of 2022.
The infamous ransomware re-emerged in mid-2023, adopted by several APT groups.
Sangfor Cyber Guardian IR was engaged to handle an attack on a large retail organization.
Despite the deletion of key system logs, we were able to analyze the remaining data to understand the attacker's methods.
Our investigation revealed a multi-pronged attack that included stealing credentials, disabling AV/EDR, mapping the network, and exploiting Windows installer files.
We also found leftover files produced by Mimikatz, a tool commonly used for password extraction, indicating that the attacker managed to access sensitive login credentials.
Our Cyber Guardian IR team concluded that infiltration was successful because the AV was disabled, no network monitoring tools to detect command & control communications, and the lack of active security monitoring to detect this event and stop it in time.
LESSONS LEARNED
- Enforce users to change account passwords on a regular basis with strong password requirements.
- Deploy endpoint security solutions that prevent or mitigate termination, such as Sangfor Endpoint Secure with termination detection and uninstallation password.
- Subscribe to Cyber Guardian MDR to monitor hundreds of IT assets on a 24x7 basis.
- Duplicate critical server backups and logs in a segmentized network.
Always remember
SANGFOR CYBER GUARDIAN MDR - Faster Response Through Human/AI Collaboration
SANGFOR CYBER GUARDIAN TIARA - Intel-led Threat Analysis and Assessment
SANGFOR ENDPOINT SECURE - The Future of Endpoint Security