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General

  • Target

    file

  • Size

    225KB

  • Sample

    231011-xna53afd8s

  • MD5

    6546844f130e761aeb34029466409553

  • SHA1

    0aeb09a39e97d2526fe8ff8467129c8b48506fef

  • SHA256

    8d5bd2b247ca7d188c082e08e7a90034110482919e7b737b838c6dade6b4d644

  • SHA512

    1223795b2ec6a6410f943a21d4f8c03dc31792f3ea19407ed2cdbefa24b5373a2f9dd5b4103c71c065b19d7243733fab1390f6972eb15e2a32f56a98146b546e

  • SSDEEP

    3072:3X5VL2484h6kCiEjjPv1S9Q7QikIPXV9tEnYufioL26FzYxL5yMzuTy:n/Nh67iEjjkQMWbufs0eUMyT

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      225KB

    • MD5

      6546844f130e761aeb34029466409553

    • SHA1

      0aeb09a39e97d2526fe8ff8467129c8b48506fef

    • SHA256

      8d5bd2b247ca7d188c082e08e7a90034110482919e7b737b838c6dade6b4d644

    • SHA512

      1223795b2ec6a6410f943a21d4f8c03dc31792f3ea19407ed2cdbefa24b5373a2f9dd5b4103c71c065b19d7243733fab1390f6972eb15e2a32f56a98146b546e

    • SSDEEP

      3072:3X5VL2484h6kCiEjjPv1S9Q7QikIPXV9tEnYufioL26FzYxL5yMzuTy:n/Nh67iEjjkQMWbufs0eUMyT

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks