General

  • Target

    file.exe

  • Size

    246KB

  • Sample

    230919-jldxaafe9t

  • MD5

    09ce9db1fe65f1dda9a12ff007ab7c49

  • SHA1

    6de9002994c5b24fd0d47ed7a2634acb0cfc9098

  • SHA256

    a5db0e42dae567e9606ec0c6d97e1329c76069d3843172ff2dd42df3cd3f3c5c

  • SHA512

    de5922106801baac81db1db020de2b2e0d5fe32e16e67899920773f8175475ec041e02adb37e2abf4b856924e35eb12fd55822c74faaa6bcd3faca7b87169f95

  • SSDEEP

    3072:sOmty/raritE/9T3WAEMVIhS5jgII+nijVFYnMOa5:sMrariCVG2jgIbnijVunMO

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      246KB

    • MD5

      09ce9db1fe65f1dda9a12ff007ab7c49

    • SHA1

      6de9002994c5b24fd0d47ed7a2634acb0cfc9098

    • SHA256

      a5db0e42dae567e9606ec0c6d97e1329c76069d3843172ff2dd42df3cd3f3c5c

    • SHA512

      de5922106801baac81db1db020de2b2e0d5fe32e16e67899920773f8175475ec041e02adb37e2abf4b856924e35eb12fd55822c74faaa6bcd3faca7b87169f95

    • SSDEEP

      3072:sOmty/raritE/9T3WAEMVIhS5jgII+nijVFYnMOa5:sMrariCVG2jgIbnijVunMO

    • 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