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General

  • Target

    file.exe

  • Size

    214KB

  • Sample

    221216-24jjlafg94

  • MD5

    2ac1468184da62b79a042453ba886783

  • SHA1

    ff899e91ff35e73ad05bb321ce01a77e6f1f00a1

  • SHA256

    9c7812d825974b02bb6ed49097d75c7f9e82f67bbe35f595f6d3df23cff07d38

  • SHA512

    a92788df659ff40c0338ea062e478224902389fced7fde946ef70ae1770ef2c26c6aae4231ac41905935f249351fe122e93ac276c957b4e61fe38bd52bbcd838

  • SSDEEP

    3072:f2XcK/YLMAHSbRS00/InRJpBHRytfAJ0eTjJJfLszeAeHOu40zwUzQRKF+:ubYLMA100sgfcDXgzJju40M2b

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      214KB

    • MD5

      2ac1468184da62b79a042453ba886783

    • SHA1

      ff899e91ff35e73ad05bb321ce01a77e6f1f00a1

    • SHA256

      9c7812d825974b02bb6ed49097d75c7f9e82f67bbe35f595f6d3df23cff07d38

    • SHA512

      a92788df659ff40c0338ea062e478224902389fced7fde946ef70ae1770ef2c26c6aae4231ac41905935f249351fe122e93ac276c957b4e61fe38bd52bbcd838

    • SSDEEP

      3072:f2XcK/YLMAHSbRS00/InRJpBHRytfAJ0eTjJJfLszeAeHOu40zwUzQRKF+:ubYLMA100sgfcDXgzJju40M2b

    • 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)

    • Executes dropped EXE

    • 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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks