General

  • Target

    3f417ded6a57a6a15a5417c7c360ae0089130af33cc1cc0a8d135321860b034f

  • Size

    11.4MB

  • Sample

    240529-j2e5aagg92

  • MD5

    9976381d1866b0994d0aaf96d002cb8b

  • SHA1

    e4d9df609a9011ccf1bf01b04677cfdf07e7407e

  • SHA256

    3f417ded6a57a6a15a5417c7c360ae0089130af33cc1cc0a8d135321860b034f

  • SHA512

    d6c26012dc4cfc0353cc85c09ba9b31c398ba36193df63f0d5231d758429faef03b6403fe41748c901860bded1a83f07d40412149ecb2935346384fb1e8ff716

  • SSDEEP

    3072:kyBNbfF6eAnc2Tzx4QL0YNmHhBZ03eYqqOkkYe0jNC4vj5MLIFBX/BX/BX/BX/BX:3rnAnXTz6Qwf87qqrk16M4o

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      3f417ded6a57a6a15a5417c7c360ae0089130af33cc1cc0a8d135321860b034f

    • Size

      11.4MB

    • MD5

      9976381d1866b0994d0aaf96d002cb8b

    • SHA1

      e4d9df609a9011ccf1bf01b04677cfdf07e7407e

    • SHA256

      3f417ded6a57a6a15a5417c7c360ae0089130af33cc1cc0a8d135321860b034f

    • SHA512

      d6c26012dc4cfc0353cc85c09ba9b31c398ba36193df63f0d5231d758429faef03b6403fe41748c901860bded1a83f07d40412149ecb2935346384fb1e8ff716

    • SSDEEP

      3072:kyBNbfF6eAnc2Tzx4QL0YNmHhBZ03eYqqOkkYe0jNC4vj5MLIFBX/BX/BX/BX/BX:3rnAnXTz6Qwf87qqrk16M4o

    • 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