General

  • Target

    6d3fa2316c29890ab6313e6267ca90fdc1c7d92dd1e707cb77b74a7985150c1f

  • Size

    10.3MB

  • Sample

    240506-j7bdaahc52

  • MD5

    feffbd9fa3b21798d4c34b42abf86ce0

  • SHA1

    4a1979cb0232a525c4801e4789dc7538abcb82a0

  • SHA256

    6d3fa2316c29890ab6313e6267ca90fdc1c7d92dd1e707cb77b74a7985150c1f

  • SHA512

    51ec270aee48f5f38647c89a5b9a0488f82f4f2841ee8b10db77109e696c0152dc89efa4f63cd266e64908d2bd67843cd024d7e1b97338a767bb08ce7e73dbb0

  • SSDEEP

    12288:j9GPViFkls15KJ4ClhxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxP:CiugC

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      6d3fa2316c29890ab6313e6267ca90fdc1c7d92dd1e707cb77b74a7985150c1f

    • Size

      10.3MB

    • MD5

      feffbd9fa3b21798d4c34b42abf86ce0

    • SHA1

      4a1979cb0232a525c4801e4789dc7538abcb82a0

    • SHA256

      6d3fa2316c29890ab6313e6267ca90fdc1c7d92dd1e707cb77b74a7985150c1f

    • SHA512

      51ec270aee48f5f38647c89a5b9a0488f82f4f2841ee8b10db77109e696c0152dc89efa4f63cd266e64908d2bd67843cd024d7e1b97338a767bb08ce7e73dbb0

    • SSDEEP

      12288:j9GPViFkls15KJ4ClhxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxP:CiugC

    • Tofsee

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

    • Windows security bypass

    • 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