General

  • Target

    file

  • Size

    193KB

  • Sample

    231002-g9xm7ahd74

  • MD5

    85566c0e8a1a7493e65abc47e1ed2f52

  • SHA1

    0fc665eb362732bb0f3749968c60271439e606b4

  • SHA256

    4f82ce0fc03fc61ebb8ee507e02d53c4ef047b612d32954d48679ec0e31857eb

  • SHA512

    2b3d77f8a035d729e40e9285ea02eaff18b7b6383a05f1c9eba477eec4c988000a49c7a19013d53963b1c802ecd26968ca0e4c90423b342b11dc280803158892

  • SSDEEP

    3072:VTeAgFiHFfxX/uC7TU8nS/USEeiHBSIykHrWzcE502+ovV:yilfxBm/dlihRyWqnZV

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      193KB

    • MD5

      85566c0e8a1a7493e65abc47e1ed2f52

    • SHA1

      0fc665eb362732bb0f3749968c60271439e606b4

    • SHA256

      4f82ce0fc03fc61ebb8ee507e02d53c4ef047b612d32954d48679ec0e31857eb

    • SHA512

      2b3d77f8a035d729e40e9285ea02eaff18b7b6383a05f1c9eba477eec4c988000a49c7a19013d53963b1c802ecd26968ca0e4c90423b342b11dc280803158892

    • SSDEEP

      3072:VTeAgFiHFfxX/uC7TU8nS/USEeiHBSIykHrWzcE502+ovV:yilfxBm/dlihRyWqnZV

    • 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