General

  • Target

    https://github.com/pankoza2-pl/malwaredatabase-old

  • Sample

    240307-rflnyaea2t

Malware Config

Targets

    • Target

      https://github.com/pankoza2-pl/malwaredatabase-old

    • Chaos

      Ransomware family first seen in June 2021.

    • Chaos Ransomware

    • UAC bypass

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Enterprise v15

Tasks