General

  • Target

    b27e4f6888ead7b1bace259ebb494d540fe4d4398b176e53e7963222bdbbcc3e.exe

  • Size

    10.2MB

  • Sample

    241121-bfjxcaxlfx

  • MD5

    0a5435b0caf94bf65e29727f66456c25

  • SHA1

    76eb55c90ec530ed3969c4fffbf2a64196c90673

  • SHA256

    b27e4f6888ead7b1bace259ebb494d540fe4d4398b176e53e7963222bdbbcc3e

  • SHA512

    115278b35b2f5c4e93cc4ddcda82c61a6a2faf5bf58ada753eed8ab3afb110c407cc0dbcc175ecc4b245a9e0ce199df96cc8bb2d07e7f7b8b9659c7052119472

  • SSDEEP

    12288:EZv3F8h86NMcoGuc3FXE4WrIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIB:Ep3F8Au3FPW9

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Targets

    • Target

      b27e4f6888ead7b1bace259ebb494d540fe4d4398b176e53e7963222bdbbcc3e.exe

    • Size

      10.2MB

    • MD5

      0a5435b0caf94bf65e29727f66456c25

    • SHA1

      76eb55c90ec530ed3969c4fffbf2a64196c90673

    • SHA256

      b27e4f6888ead7b1bace259ebb494d540fe4d4398b176e53e7963222bdbbcc3e

    • SHA512

      115278b35b2f5c4e93cc4ddcda82c61a6a2faf5bf58ada753eed8ab3afb110c407cc0dbcc175ecc4b245a9e0ce199df96cc8bb2d07e7f7b8b9659c7052119472

    • SSDEEP

      12288:EZv3F8h86NMcoGuc3FXE4WrIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIB:Ep3F8Au3FPW9

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks