General

  • Target

    file

  • Size

    221KB

  • Sample

    230919-d15qnaee7w

  • MD5

    9af2dd9d72775a4bdfdda7877b47eef9

  • SHA1

    45da7ba126a46bc8922646a32e65e27486dabb73

  • SHA256

    d0f9030dbeed2cf285881eaa72226b8fb572ca7b70238cf79a0aa587d122cb39

  • SHA512

    4a49b1c06783b07616b74cc2434b72857c23fe4cc4f8d576915042f96e8daffb3c3837b9516fc878380b06f32f0c42c017d7b7eb7849548c4872ba56b665eb10

  • SSDEEP

    3072:8SL44qfLRy61pwVeeM/VHiJYPH6rGefwbGoFEbEmg5mgcp2Ts:t49fLY612VexHiJ2H6qefwb2Jngcp2T

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      221KB

    • MD5

      9af2dd9d72775a4bdfdda7877b47eef9

    • SHA1

      45da7ba126a46bc8922646a32e65e27486dabb73

    • SHA256

      d0f9030dbeed2cf285881eaa72226b8fb572ca7b70238cf79a0aa587d122cb39

    • SHA512

      4a49b1c06783b07616b74cc2434b72857c23fe4cc4f8d576915042f96e8daffb3c3837b9516fc878380b06f32f0c42c017d7b7eb7849548c4872ba56b665eb10

    • SSDEEP

      3072:8SL44qfLRy61pwVeeM/VHiJYPH6rGefwbGoFEbEmg5mgcp2Ts:t49fLY612VexHiJ2H6qefwb2Jngcp2T

    • 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