General

  • Target

    39463629c56d05149e86af5193203c5485472182335babcb17afef1aa99a3118

  • Size

    144KB

  • Sample

    221128-ccec5abb9z

  • MD5

    43826e3ce5daed8562f94b1ef7b7b507

  • SHA1

    b438d11f384aed10c44469c2b6ff0ca45273256e

  • SHA256

    39463629c56d05149e86af5193203c5485472182335babcb17afef1aa99a3118

  • SHA512

    2750166942c21217d9ea27d579bec79755ee140020dac22d22efd2fe5b014e343f5822403cc0d062f2e54d7b1b891386258650bee1d59c6c4f75c9c559348089

  • SSDEEP

    3072:pOrvheZFMbyaS+56vE8FnnCuHqh9IbfkwMSfozOM5:ovDbya38FnxHbbKz

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      39463629c56d05149e86af5193203c5485472182335babcb17afef1aa99a3118

    • Size

      144KB

    • MD5

      43826e3ce5daed8562f94b1ef7b7b507

    • SHA1

      b438d11f384aed10c44469c2b6ff0ca45273256e

    • SHA256

      39463629c56d05149e86af5193203c5485472182335babcb17afef1aa99a3118

    • SHA512

      2750166942c21217d9ea27d579bec79755ee140020dac22d22efd2fe5b014e343f5822403cc0d062f2e54d7b1b891386258650bee1d59c6c4f75c9c559348089

    • SSDEEP

      3072:pOrvheZFMbyaS+56vE8FnnCuHqh9IbfkwMSfozOM5:ovDbya38FnxHbbKz

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks