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General

  • Target

    file

  • Size

    214KB

  • Sample

    230919-3epjzsce6w

  • MD5

    853a0ef89b1532e80c7e14d14cbf0073

  • SHA1

    8d83ff39485dab7df49d527cca9bfc53938597e8

  • SHA256

    a34e57fcf36648d26b35a8e3e43d4c523bd07216bda22c2a283c4a6a22e7d070

  • SHA512

    b1eb21f26a6c7857356b7b8578cfbc0bdb1bb9a3ae6d0c7b9d0968e9bce4c06544124f03f4cbcd7e975be6f8237cdd10f22c12fecaddfbd8854c687503839c9d

  • SSDEEP

    3072:+AXMadk9mLIqG7/IovYa4EVFW5hgWAErvf+XSLwVtxjpkwnwxLB5bSDT0K:TMaO9mL07/IrMF1WFVLwlZwdnSDT

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      214KB

    • MD5

      853a0ef89b1532e80c7e14d14cbf0073

    • SHA1

      8d83ff39485dab7df49d527cca9bfc53938597e8

    • SHA256

      a34e57fcf36648d26b35a8e3e43d4c523bd07216bda22c2a283c4a6a22e7d070

    • SHA512

      b1eb21f26a6c7857356b7b8578cfbc0bdb1bb9a3ae6d0c7b9d0968e9bce4c06544124f03f4cbcd7e975be6f8237cdd10f22c12fecaddfbd8854c687503839c9d

    • SSDEEP

      3072:+AXMadk9mLIqG7/IovYa4EVFW5hgWAErvf+XSLwVtxjpkwnwxLB5bSDT0K:TMaO9mL07/IrMF1WFVLwlZwdnSDT

    • Tofsee

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

    • Windows security bypass

    • xmrig

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

    • XMRig Miner payload

    • Creates new service(s)

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks