General

  • Target

    JaffaCakes118_f5c1953b78e2e0011b315c65651919695c4407b96cc50d2ecf8821e2e0a7fbb6

  • Size

    147KB

  • Sample

    241229-cywjjazkgt

  • MD5

    5257a7e18e8f9dcbd3171159633288e5

  • SHA1

    172373aaade3546e28f2c653b9d9ae120050faaa

  • SHA256

    f5c1953b78e2e0011b315c65651919695c4407b96cc50d2ecf8821e2e0a7fbb6

  • SHA512

    426e5dfb3d2958910db61bb06859fc3980c5ad6eecdc42a4833ffd7ad5f0d8a3e93536c38c812d9cbc67a5a18515f5cef3fd755795a97f5e65cbcfcee934dc8e

  • SSDEEP

    3072:+b60ay8bkn6jdahHD0V0LI5UnrcPI1ZeNJfX6ALz:+bvayP6jdaZD0VSncPI1eXJ

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Targets

    • Target

      JaffaCakes118_f5c1953b78e2e0011b315c65651919695c4407b96cc50d2ecf8821e2e0a7fbb6

    • Size

      147KB

    • MD5

      5257a7e18e8f9dcbd3171159633288e5

    • SHA1

      172373aaade3546e28f2c653b9d9ae120050faaa

    • SHA256

      f5c1953b78e2e0011b315c65651919695c4407b96cc50d2ecf8821e2e0a7fbb6

    • SHA512

      426e5dfb3d2958910db61bb06859fc3980c5ad6eecdc42a4833ffd7ad5f0d8a3e93536c38c812d9cbc67a5a18515f5cef3fd755795a97f5e65cbcfcee934dc8e

    • SSDEEP

      3072:+b60ay8bkn6jdahHD0V0LI5UnrcPI1ZeNJfX6ALz:+bvayP6jdaZD0VSncPI1eXJ

    • Tofsee

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

    • Tofsee family

    • 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