Resubmissions

24/10/2023, 07:41

231024-jh9vjsbe21 10

24/10/2023, 04:50

231024-ff96raaf5s 10

General

  • Target

    file.exe

  • Size

    175KB

  • Sample

    231024-ff96raaf5s

  • MD5

    d382d253438178a44d67bcbaa981ef3b

  • SHA1

    0e1c782df01cef179ac0f189689e061bb987bdc0

  • SHA256

    d249a482a32a8ec7fcd413b4788623427381bfa1eda1d9830a81d0d32a253fac

  • SHA512

    2949e7be5b683c875dadc838505f6265c93bc4fb37fee1d62bb1f663634671aabdf820d8cf85ed90e760f617cbe0bad9a5455e2bb4468daf5c0f5db36073a207

  • SSDEEP

    3072:9uBNaqoS6nDTU1EKmqGlKyKwFkDtwkTGvX4IbDphSxRr79pq:kEql6nDTU1EKRGlKyJAG/zXphSH7

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      175KB

    • MD5

      d382d253438178a44d67bcbaa981ef3b

    • SHA1

      0e1c782df01cef179ac0f189689e061bb987bdc0

    • SHA256

      d249a482a32a8ec7fcd413b4788623427381bfa1eda1d9830a81d0d32a253fac

    • SHA512

      2949e7be5b683c875dadc838505f6265c93bc4fb37fee1d62bb1f663634671aabdf820d8cf85ed90e760f617cbe0bad9a5455e2bb4468daf5c0f5db36073a207

    • SSDEEP

      3072:9uBNaqoS6nDTU1EKmqGlKyKwFkDtwkTGvX4IbDphSxRr79pq:kEql6nDTU1EKRGlKyJAG/zXphSH7

    • Tofsee

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

    • Windows security bypass

    • 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