General

  • Target

    1d497f3b11e46c0aefa710db28433fc0_NeikiAnalytics.exe

  • Size

    241KB

  • Sample

    240527-d946gseh9x

  • MD5

    1d497f3b11e46c0aefa710db28433fc0

  • SHA1

    3d2f7ab0e0eb623d7560fd20f5457961cbdbc42e

  • SHA256

    d283e5ff7df8693ac522865b0c89662cbdba58fbd83e6404af2736656285c1e4

  • SHA512

    a224bcd0406e0d4d4ba4680dbaea86fefbd43c57aa79701fe7397d88627f764f421c894a81397d5dcec8436aa17f596c96d80a649e4187e7540de98e23c66f61

  • SSDEEP

    3072:Re1H2+C3A2QSr4Adea6S5y7oBlD5uURUI:A1HC3P4K5moBy3

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      1d497f3b11e46c0aefa710db28433fc0_NeikiAnalytics.exe

    • Size

      241KB

    • MD5

      1d497f3b11e46c0aefa710db28433fc0

    • SHA1

      3d2f7ab0e0eb623d7560fd20f5457961cbdbc42e

    • SHA256

      d283e5ff7df8693ac522865b0c89662cbdba58fbd83e6404af2736656285c1e4

    • SHA512

      a224bcd0406e0d4d4ba4680dbaea86fefbd43c57aa79701fe7397d88627f764f421c894a81397d5dcec8436aa17f596c96d80a649e4187e7540de98e23c66f61

    • SSDEEP

      3072:Re1H2+C3A2QSr4Adea6S5y7oBlD5uURUI:A1HC3P4K5moBy3

    • 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

    • 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