General

  • Target

    f19839e819f084c250d561a7713457ca2d27e771394868707ede3a69482b9046

  • Size

    10.0MB

  • Sample

    241012-nbbrdssbmk

  • MD5

    d000fc4d15df3dc09fb9c38e4fad1b41

  • SHA1

    8cb54b2f6b45fd55830372c21e6808ce42409596

  • SHA256

    f19839e819f084c250d561a7713457ca2d27e771394868707ede3a69482b9046

  • SHA512

    fd3258e909cc5ca15cf96c1ce9ca96891fed33f5269aedd729c16d5bdcb13b42d521c17b69513661b9ce28af0565e2531fe391d72f999013c7cd2fe2682bea11

  • SSDEEP

    3072:ryBN6fvr6AFsSrGxC4aw0j7zaKRi0GNLKyHO/10J/xXsxXsxXsxXsxXsxXsxXsxu:ai+AF/rGMUkOKRi0yXSy

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      f19839e819f084c250d561a7713457ca2d27e771394868707ede3a69482b9046

    • Size

      10.0MB

    • MD5

      d000fc4d15df3dc09fb9c38e4fad1b41

    • SHA1

      8cb54b2f6b45fd55830372c21e6808ce42409596

    • SHA256

      f19839e819f084c250d561a7713457ca2d27e771394868707ede3a69482b9046

    • SHA512

      fd3258e909cc5ca15cf96c1ce9ca96891fed33f5269aedd729c16d5bdcb13b42d521c17b69513661b9ce28af0565e2531fe391d72f999013c7cd2fe2682bea11

    • SSDEEP

      3072:ryBN6fvr6AFsSrGxC4aw0j7zaKRi0GNLKyHO/10J/xXsxXsxXsxXsxXsxXsxXsxu:ai+AF/rGMUkOKRi0yXSy

    • 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