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General

  • Target

    file

  • Size

    215KB

  • Sample

    230918-qbcpsshd6y

  • MD5

    4e24c2069b040a40ebba8929e9ad2909

  • SHA1

    3fb7d81f621f77572fb1cc7ed4c0c116c5e68a4c

  • SHA256

    b94a454399232bb541b952c27fd158c8ddb4cbd3ec28633c63ae7187ad0adbe2

  • SHA512

    6ca3424e6891d17416241079f88eaa0dad7796dad143499874b269484156608dc6f13ef7786a3ff8b3dfc3d9f5942fa11f2ade68c6ea5a312e4433dd0393bb41

  • SSDEEP

    3072:XAX5ILc4SJF966mc67wYHUzDBdgBoQtCMiAQOM+757awZTJw4:k5ILaJF96rc67noAB5g9OL9awZT

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      215KB

    • MD5

      4e24c2069b040a40ebba8929e9ad2909

    • SHA1

      3fb7d81f621f77572fb1cc7ed4c0c116c5e68a4c

    • SHA256

      b94a454399232bb541b952c27fd158c8ddb4cbd3ec28633c63ae7187ad0adbe2

    • SHA512

      6ca3424e6891d17416241079f88eaa0dad7796dad143499874b269484156608dc6f13ef7786a3ff8b3dfc3d9f5942fa11f2ade68c6ea5a312e4433dd0393bb41

    • SSDEEP

      3072:XAX5ILc4SJF966mc67wYHUzDBdgBoQtCMiAQOM+757awZTJw4:k5ILaJF96rc67noAB5g9OL9awZT

    • 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