General

  • Target

    file

  • Size

    348KB

  • Sample

    230416-eas5lsac9t

  • MD5

    ab34b13392e607a878a108d6705e3907

  • SHA1

    f3af29d68d7c99b594bb2b9de122824eae3ed343

  • SHA256

    e5988d6453c4830066089250a0a014265e6275e2b8598dee940b56b34410cbe6

  • SHA512

    43bc4575fe434ac83a2070ad5faf5b516bdaff2e20230ff6fb193f46bf876b0b7d107a89299353c7754b90ccaa4e4418ade2344258227694bee05e08458e5ebc

  • SSDEEP

    6144:z46ChoCA3cTwoUNwMXGi7BbCu1B8hy0Hbe4:z4LhltTwoUN7XBohtHq4

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      348KB

    • MD5

      ab34b13392e607a878a108d6705e3907

    • SHA1

      f3af29d68d7c99b594bb2b9de122824eae3ed343

    • SHA256

      e5988d6453c4830066089250a0a014265e6275e2b8598dee940b56b34410cbe6

    • SHA512

      43bc4575fe434ac83a2070ad5faf5b516bdaff2e20230ff6fb193f46bf876b0b7d107a89299353c7754b90ccaa4e4418ade2344258227694bee05e08458e5ebc

    • SSDEEP

      6144:z46ChoCA3cTwoUNwMXGi7BbCu1B8hy0Hbe4:z4LhltTwoUN7XBohtHq4

    • 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 v6

Tasks