General

  • Target

    file

  • Size

    264KB

  • Sample

    231119-hcftvahh71

  • MD5

    d085dc6ffcf8e6dc85b72eccd31c3f2b

  • SHA1

    9262e2f952a57945883bd1aeeb299c356e920fd7

  • SHA256

    2bc718dd0556573f7dc30befcada86585e1d640656e8d9edf49a0f08f4555332

  • SHA512

    9102e443b4a9cd78010bf13b1fb664f9e7f8967f46906d36f4edd3c25581600f8b4d4eda0658e9ce77b4d7cbd8aa900d119af04d53a168a18af3ff72b09efaf9

  • SSDEEP

    6144:MINbP3BLlJJEbKXs4i1Go8Ch06i08MrTpp:MINzxLPbvi1ZfhYrKP

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      264KB

    • MD5

      d085dc6ffcf8e6dc85b72eccd31c3f2b

    • SHA1

      9262e2f952a57945883bd1aeeb299c356e920fd7

    • SHA256

      2bc718dd0556573f7dc30befcada86585e1d640656e8d9edf49a0f08f4555332

    • SHA512

      9102e443b4a9cd78010bf13b1fb664f9e7f8967f46906d36f4edd3c25581600f8b4d4eda0658e9ce77b4d7cbd8aa900d119af04d53a168a18af3ff72b09efaf9

    • SSDEEP

      6144:MINbP3BLlJJEbKXs4i1Go8Ch06i08MrTpp:MINzxLPbvi1ZfhYrKP

    • 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