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General

  • Target

    file

  • Size

    243KB

  • Sample

    230831-rre1jafe38

  • MD5

    cb7d981a41514e05e06f245e41def1b1

  • SHA1

    e72486411d3f0d30143cca799ff5b22c719db778

  • SHA256

    27fca545923d2b0afc8f1075cb68eea4ebfb38e1e4184883ada0a5f24e9e014d

  • SHA512

    98b2d86c95350993d9adde9b8af9ca6d876b8976bf194f832129c39481ab0f86b547e2a1e3d631e8c783d0e680e91408fb756e95329049604cc1216fb5f4daa5

  • SSDEEP

    3072:ErEg4+jlrQ/peokrb2aapOQ49yDe206gqzANPtyu/uf4nm3CQ4++5lmj:RkQpeoSb2aVZU0+ARtyuW6fT5lm

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      243KB

    • MD5

      cb7d981a41514e05e06f245e41def1b1

    • SHA1

      e72486411d3f0d30143cca799ff5b22c719db778

    • SHA256

      27fca545923d2b0afc8f1075cb68eea4ebfb38e1e4184883ada0a5f24e9e014d

    • SHA512

      98b2d86c95350993d9adde9b8af9ca6d876b8976bf194f832129c39481ab0f86b547e2a1e3d631e8c783d0e680e91408fb756e95329049604cc1216fb5f4daa5

    • SSDEEP

      3072:ErEg4+jlrQ/peokrb2aapOQ49yDe206gqzANPtyu/uf4nm3CQ4++5lmj:RkQpeoSb2aVZU0+ARtyuW6fT5lm

    • Tofsee

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

    • 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.

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks