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You are here: Home / News / Avaddon ransomware memperbaiki cacat yang memungkinkan dekripsi gratis

Avaddon ransomware memperbaiki cacat yang memungkinkan dekripsi gratis

February 13, 2021 by Winnie the Pooh

Geng ransomware Avaddon telah memperbaiki bug yang memungkinkan korban memulihkan file mereka tanpa membayar uang tebusan. Cacat ini terungkap setelah peneliti keamanan mengeksploitasinya untuk membuat decryptor.

Pada hari Selasa, Javier Yuste, Ph.D. mahasiswa di Universitas Rey Juan Carlos, menerbitkan decryptor untuk Avaddon Ransomware di halaman GitHub-nya dan merilis laporan yang menjelaskan cacat melalui ArXiv.

Menurut penelitian Yuste, ketika ransomware Avaddon mengenkripsi perangkat, ia membuat kunci sesi enkripsi AES256 unik yang digunakan untuk mengenkripsi dan mendekripsi file.

Namun, kekurangan dalam cara ransomware membersihkan kunci ini memungkinkan Yuste membuat dekripsi yang mengambil kunci dari memori selama komputer belum dimatikan sejak dienkripsi.

Penting untuk diingat bahwa ransomware dan pelaku ancaman mengikuti Twitter dan umpan berita yang sama dengan yang Anda lakukan.

BleepingComputer juga telah dihubungi berkali-kali oleh pelaku ancaman yang ingin mengklarifikasi suatu poin dalam artikel atau memberi tahu kami informasi lebih lanjut.

Oleh karena itu, selalu penting untuk mengasumsikan bahwa setiap kekurangan ransomware yang diungkapkan secara terbuka juga akan dilihat oleh pelaku ancaman.

Kami telah melihat ini secara historis dengan CryptoDefense, DarkSide, dan sekarang Avaddon.

Untuk alasan ini, sebagian besar ahli ransomware tidak berpikir perusahaan keamanan dan peneliti harus mempublikasikan kelemahan atau dekripsi enkripsi karena memungkinkan pelaku ancaman untuk memperbaiki bug di malware mereka.

Sebaliknya, disarankan agar mereka yang membuat decryptor menjangkau perusahaan antivirus, firma penanganan insiden, penegak hukum, dan komunitas seperti BleepingComputer yang biasanya membantu korban ransomware.

Decryptors ini kemudian dapat digunakan oleh organisasi-organisasi ini untuk membantu korban secara pribadi, sementara pada saat yang sama tidak mengungkapkan secara publik kepada pengembang ransomware bagaimana memperbaiki kekurangan mereka.

selengkapnya : BleepingComputer

Tagged With: Avaddon, Ransomware

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