General

  • Target

    file

  • Size

    195KB

  • Sample

    231008-qz5eqacd8t

  • MD5

    5c6683a06936a39749d7e6bcdf4b87a4

  • SHA1

    ee6bcde3f1f045f0d3575de986a25d02eabca68d

  • SHA256

    581b33f09c35d6df564be5836b7346a7adc7099c89e3dc7526c30aa8f0469e6a

  • SHA512

    bcb8537004a6b086bdaafd1b255ba58ccfa3c03cdb73b179718e58805e3321e5194225f0caa2ab4e76b19b9c736d261254a48fd1e497f96a5f4f41ef2be71ddc

  • SSDEEP

    3072:VUtu541Efd3mNsgTdd80wrQqH98Who5l:Wtu5pfd3maIGy

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      195KB

    • MD5

      5c6683a06936a39749d7e6bcdf4b87a4

    • SHA1

      ee6bcde3f1f045f0d3575de986a25d02eabca68d

    • SHA256

      581b33f09c35d6df564be5836b7346a7adc7099c89e3dc7526c30aa8f0469e6a

    • SHA512

      bcb8537004a6b086bdaafd1b255ba58ccfa3c03cdb73b179718e58805e3321e5194225f0caa2ab4e76b19b9c736d261254a48fd1e497f96a5f4f41ef2be71ddc

    • SSDEEP

      3072:VUtu541Efd3mNsgTdd80wrQqH98Who5l:Wtu5pfd3maIGy

    • 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