General

  • Target

    file

  • Size

    295KB

  • Sample

    231003-f3vpksgd9s

  • MD5

    5b67f2c18b61f0fd4ed4343a7e5f3c17

  • SHA1

    4229dbbb3278f547976e13401bd1c19d27a37c71

  • SHA256

    8f10b0bfd5cfecd77dc53dffb7d1e330c16066e38561eacd1c189a1f2b23f75e

  • SHA512

    033dc2f129e1b796b1bc5fb5b9bbd3d4263fa5fc23b0265b4f8fe6898aa150d38eae5cb33e3de4be4a95271f6d4870e1d3525aa022c5879866e5cf02f0dcf0b4

  • SSDEEP

    3072:0FyUWKBCrBhus7m7dW0zO0jj2rHMzndb2l0v1hil7w:KyUWECNhus7msCfjj24LN2l0vDq

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      295KB

    • MD5

      5b67f2c18b61f0fd4ed4343a7e5f3c17

    • SHA1

      4229dbbb3278f547976e13401bd1c19d27a37c71

    • SHA256

      8f10b0bfd5cfecd77dc53dffb7d1e330c16066e38561eacd1c189a1f2b23f75e

    • SHA512

      033dc2f129e1b796b1bc5fb5b9bbd3d4263fa5fc23b0265b4f8fe6898aa150d38eae5cb33e3de4be4a95271f6d4870e1d3525aa022c5879866e5cf02f0dcf0b4

    • SSDEEP

      3072:0FyUWKBCrBhus7m7dW0zO0jj2rHMzndb2l0v1hil7w:KyUWECNhus7msCfjj24LN2l0vDq

    • 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