General

  • Target

    NEAS.0a789303f7862ae6c864bff0e9cb793b8b8f43a88e7545c4656c2d77563b2fa0exe_JC.exe

  • Size

    264KB

  • Sample

    231026-wnlq5adf6x

  • MD5

    4db89e4fc069a41e4bb9d415b09bcb68

  • SHA1

    f0f7ffe7c838718140a155810900b173ae71b7f3

  • SHA256

    0a789303f7862ae6c864bff0e9cb793b8b8f43a88e7545c4656c2d77563b2fa0

  • SHA512

    cd2989a330180dd0a90780a2114695f782ce731627edb59b0474bc798100a6f9640ea095222202a086885cd8b32b388ec8dde822345ca346a9dba876a236c525

  • SSDEEP

    3072:bsXo5bRdAcrVHLrAIc6mxksjEkpwaE6KZX9ld3FOV+B3XH9B5Gfk9QoQb:8CbRPRL3c6mhTSaEvn3FOVaHUfk

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      NEAS.0a789303f7862ae6c864bff0e9cb793b8b8f43a88e7545c4656c2d77563b2fa0exe_JC.exe

    • Size

      264KB

    • MD5

      4db89e4fc069a41e4bb9d415b09bcb68

    • SHA1

      f0f7ffe7c838718140a155810900b173ae71b7f3

    • SHA256

      0a789303f7862ae6c864bff0e9cb793b8b8f43a88e7545c4656c2d77563b2fa0

    • SHA512

      cd2989a330180dd0a90780a2114695f782ce731627edb59b0474bc798100a6f9640ea095222202a086885cd8b32b388ec8dde822345ca346a9dba876a236c525

    • SSDEEP

      3072:bsXo5bRdAcrVHLrAIc6mxksjEkpwaE6KZX9ld3FOV+B3XH9B5Gfk9QoQb:8CbRPRL3c6mhTSaEvn3FOVaHUfk

    • 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