General

  • Target

    file

  • Size

    257KB

  • Sample

    231119-nphf4ahf65

  • MD5

    98bc4df0a0ab7afce91f477647addd23

  • SHA1

    c5177f07bd2ab18735995cf15feae75ac3e0056b

  • SHA256

    557b2c8317bfbb669d0f226b2c8844f22dccd54c627ad12edb6c01b4a9d0fd0b

  • SHA512

    03bc62eaf62a08d5b943a51972406aca68da0b09ec4640987cc5e5f85784e48ffe954a42fddda50e479b59ef7551408f772a6b889c657696d3bce946e1acd4e4

  • SSDEEP

    3072:EfTwLZl44Y3HVhSq2zOLPWGkc5dFKkM/Uv2Tnl29Ri8A7ovbDh9U:Cgl4n3y1q7kchKkgvn98UMM

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      257KB

    • MD5

      98bc4df0a0ab7afce91f477647addd23

    • SHA1

      c5177f07bd2ab18735995cf15feae75ac3e0056b

    • SHA256

      557b2c8317bfbb669d0f226b2c8844f22dccd54c627ad12edb6c01b4a9d0fd0b

    • SHA512

      03bc62eaf62a08d5b943a51972406aca68da0b09ec4640987cc5e5f85784e48ffe954a42fddda50e479b59ef7551408f772a6b889c657696d3bce946e1acd4e4

    • SSDEEP

      3072:EfTwLZl44Y3HVhSq2zOLPWGkc5dFKkM/Uv2Tnl29Ri8A7ovbDh9U:Cgl4n3y1q7kchKkgvn98UMM

    • 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