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General

  • Target

    file

  • Size

    334KB

  • Sample

    231011-labc5afe47

  • MD5

    326c87f0f560c113b40c81b5ce323446

  • SHA1

    89e1888d493b6bba3f419d93cc1ea5baead3ab99

  • SHA256

    551b111c31fac62a31b4621971488f645e4d24b709c1989a993f6c3a5b0091ee

  • SHA512

    e38705e915f7e3c4a18229856162782040e84e986e1ed67f282a28be2d9de7b4d988caf975125170c23c88133f90fb4e28fb39538aee3ebaab452dab54789060

  • SSDEEP

    3072:e0dFL6r3o6iqLCJTWqN/nqUQuGtQc6FHbTtMM0HIb4RINRC2No:lFLu3BiqLtqpn1RFxMM+Ib56

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      334KB

    • MD5

      326c87f0f560c113b40c81b5ce323446

    • SHA1

      89e1888d493b6bba3f419d93cc1ea5baead3ab99

    • SHA256

      551b111c31fac62a31b4621971488f645e4d24b709c1989a993f6c3a5b0091ee

    • SHA512

      e38705e915f7e3c4a18229856162782040e84e986e1ed67f282a28be2d9de7b4d988caf975125170c23c88133f90fb4e28fb39538aee3ebaab452dab54789060

    • SSDEEP

      3072:e0dFL6r3o6iqLCJTWqN/nqUQuGtQc6FHbTtMM0HIb4RINRC2No:lFLu3BiqLtqpn1RFxMM+Ib56

    • 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