General

  • Target

    file

  • Size

    220KB

  • Sample

    231010-y7v51sbc39

  • MD5

    884af2d7cc3128dd1e7e3e19b184f7fc

  • SHA1

    ad24f495da23ba63bad8e54574510a9c60edf6ae

  • SHA256

    312f76520d3afd443605167937eaf441f126036ea3b57902fd3d9b22cc210681

  • SHA512

    8e6883897ae3212d3fa4424b0c8c955208a83f084ea3bb9536a42ab19834c7a2f541b01ae70106dd715335089ef93085dfb62841d881820d8b43e115f59cd82f

  • SSDEEP

    3072:8DORczDkzzLwcFIvAR9vryrhBLM6cV/gS5/4VMJ7Fg3:YDmzLOAR9jyrhtje/LGsJ

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      220KB

    • MD5

      884af2d7cc3128dd1e7e3e19b184f7fc

    • SHA1

      ad24f495da23ba63bad8e54574510a9c60edf6ae

    • SHA256

      312f76520d3afd443605167937eaf441f126036ea3b57902fd3d9b22cc210681

    • SHA512

      8e6883897ae3212d3fa4424b0c8c955208a83f084ea3bb9536a42ab19834c7a2f541b01ae70106dd715335089ef93085dfb62841d881820d8b43e115f59cd82f

    • SSDEEP

      3072:8DORczDkzzLwcFIvAR9vryrhBLM6cV/gS5/4VMJ7Fg3:YDmzLOAR9jyrhtje/LGsJ

    • 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