General

  • Target

    file

  • Size

    214KB

  • Sample

    221218-yxnm7adf85

  • MD5

    951bcafb0a4e4b3a828af9a1cf16534b

  • SHA1

    f1ab2768fc107871852b73b5881284ebd40e6f9c

  • SHA256

    9441c5f3046b82e81197d9b09682bb13e6d1ed6e42afeacdbc9d627cf34d9c7d

  • SHA512

    cd8d9bd0cafcc04b8a65abaf43fb54ee01c869f5342225f6199f236805408b074858f3969fbbe8c2d839283ece900345dd014bd32c1147ae62b537cdf6c4711a

  • SSDEEP

    3072:c0F5wLy/9TwzaWR1i4zhshWWK97Reh1V/BYSENRAtOba+WCdVjcbImdzmuX:dFGLy/9wz31yhWD9Ne/+0YnjcbXF

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file

    • Size

      214KB

    • MD5

      951bcafb0a4e4b3a828af9a1cf16534b

    • SHA1

      f1ab2768fc107871852b73b5881284ebd40e6f9c

    • SHA256

      9441c5f3046b82e81197d9b09682bb13e6d1ed6e42afeacdbc9d627cf34d9c7d

    • SHA512

      cd8d9bd0cafcc04b8a65abaf43fb54ee01c869f5342225f6199f236805408b074858f3969fbbe8c2d839283ece900345dd014bd32c1147ae62b537cdf6c4711a

    • SSDEEP

      3072:c0F5wLy/9TwzaWR1i4zhshWWK97Reh1V/BYSENRAtOba+WCdVjcbImdzmuX:dFGLy/9wz31yhWD9Ne/+0YnjcbXF

    • 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