General

  • Target

    a502270fe0bd76adb7a93362351db706e1fe5f655da5d3317046810afaf9df69

  • Size

    281KB

  • Sample

    220923-evnevsdbb6

  • MD5

    a2f28698e55c342d3046af556cb82e5e

  • SHA1

    26977327b874851dafae4897c6247156ebcdc21b

  • SHA256

    a502270fe0bd76adb7a93362351db706e1fe5f655da5d3317046810afaf9df69

  • SHA512

    8ef350bb783555a4c5fd0181b3735124ebd8cf3a5b251ec192b960f33669e0f59298f5f2b873c381d7210aedd89a2fb12154d28a330f6a269dcd1a065bc03325

  • SSDEEP

    6144:yricnwgLtzwgH+oC2H56ioO5sqgohe0Ao7igavwVf:yrichZzwgez2H5LFsq9RAo2

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      a502270fe0bd76adb7a93362351db706e1fe5f655da5d3317046810afaf9df69

    • Size

      281KB

    • MD5

      a2f28698e55c342d3046af556cb82e5e

    • SHA1

      26977327b874851dafae4897c6247156ebcdc21b

    • SHA256

      a502270fe0bd76adb7a93362351db706e1fe5f655da5d3317046810afaf9df69

    • SHA512

      8ef350bb783555a4c5fd0181b3735124ebd8cf3a5b251ec192b960f33669e0f59298f5f2b873c381d7210aedd89a2fb12154d28a330f6a269dcd1a065bc03325

    • SSDEEP

      6144:yricnwgLtzwgH+oC2H56ioO5sqgohe0Ao7igavwVf:yrichZzwgez2H5LFsq9RAo2

    • Tofsee

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

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks