General

  • Target

    file.exe

  • Size

    180KB

  • Sample

    231026-rfjjksdh85

  • MD5

    962b07e17326c1141654532f4f307d4e

  • SHA1

    0a3bfc107e8c82363c2b59c30225f207ca99170a

  • SHA256

    0097a9426a4c40673425c9d58f0bc7b724ffcf06eb816a527db36bc68053f6b7

  • SHA512

    1b4db97dac00249cd865557f9331e8a911a17e6235382645808d63409a34acc16ba3b999a79d9cac76b083cbc03635367ea19a4dde5941b001a42778dc306fcf

  • SSDEEP

    3072:MHBNJdiSzhhUooH4vVHJYBikwL8J9bYdBnnnITLxHzaYDGPscHuN5:EvdiSNkH4vbYBikwK9bYDnWxHGYaEc

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      180KB

    • MD5

      962b07e17326c1141654532f4f307d4e

    • SHA1

      0a3bfc107e8c82363c2b59c30225f207ca99170a

    • SHA256

      0097a9426a4c40673425c9d58f0bc7b724ffcf06eb816a527db36bc68053f6b7

    • SHA512

      1b4db97dac00249cd865557f9331e8a911a17e6235382645808d63409a34acc16ba3b999a79d9cac76b083cbc03635367ea19a4dde5941b001a42778dc306fcf

    • SSDEEP

      3072:MHBNJdiSzhhUooH4vVHJYBikwL8J9bYdBnnnITLxHzaYDGPscHuN5:EvdiSNkH4vbYBikwK9bYDnWxHGYaEc

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks