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You are here: Home / News / Versi TrickBot baru dapat merusak firmware UEFI / BIOS

Versi TrickBot baru dapat merusak firmware UEFI / BIOS

December 4, 2020 by Winnie the Pooh

Operator botnet malware TrickBot telah menambahkan kemampuan baru yang memungkinkan mereka berinteraksi dengan firmware BIOS atau UEFI komputer yang terinfeksi.

Kemampuan baru ini terlihat di dalam bagian dari modul TrickBot baru, pertama kali terlihat pada akhir Oktober, perusahaan keamanan Advanced Intelligence dan Eclypsium mengatakan dalam joint report yang diterbitkan pada 3 Desember 2020.

Modul baru ini membuat para peneliti keamanan khawatir karena fitur-fiturnya akan memungkinkan malware TrickBot untuk membangun pijakan yang lebih gigih pada sistem yang terinfeksi, pijakan yang memungkinkan malware bertahan dari penginstalan ulang OS.

Selain itu, AdvIntel dan Eclypsium mengatakan fitur modul baru dapat digunakan lebih dari sekadar persistence yang lebih baik, seperti:

  • Melakukan bricking perangkat dari jarak jauh pada tingkat firmware melalui koneksi jarak jauh malware yang khas.
  • Melewati kontrol keamanan seperti BitLocker, ELAM, Windows 10 Virtual Secure Mode, Credential Guard, kontrol perlindungan endpoint seperti A/V, EDR, dll.
  • Menyiapkan serangan lanjutan yang menargetkan kerentanan Intel CSME, beberapa di antaranya memerlukan akses flash SPI.
  • Membalikkan ACM atau pembaruan kode mikro yang menambal kerentanan CPU seperti Spectre, MDS, dll.

Kabar baiknya adalah bahwa “sejauh ini, modul TrickBot hanya memeriksa pengontrol SPI untuk memeriksa apakah perlindungan penulisan BIOS diaktifkan atau tidak, dan belum terlihat memodifikasi firmware itu sendiri,” menurut AdvIntel dan Eclypsium.

Namun, Modul ini juga dapat digunakan dalam serangan ransomware, di mana geng TrickBot sering terlibat dengan menyewakan akses ke jaringan botnya kepada kru ransomware.

Sumber: AdvIntel

Selama beberapa minggu terakhir, operasi TrickBot telah memperlihatkan banyak pembaruan, dari teknik obfuscation baru, infrastruktur perintah dan kontrol baru, dan kampanye spam baru.

Sumber: ZDNet

Tagged With: BIOS, Botnet, Cybersecurity, Firmware, Malware, Security, TrickBot, UEFI

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