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AES

Ransomware LockBit versi Linux menargetkan server VMware ESXi

January 27, 2022 by Eevee

Geng ransomware kini telah mengembangkan taktik mereka untuk membuat enkripsi Linux yang secara khusus menargetkan platform virtualisasi VMware vSphere dan ESXi yang populer selama setahun terakhir.

Meskipun ESXi tidak sepenuhnya Linux, ia memiliki banyak karakteristik yang sama, termasuk kemampuan untuk menjalankan executable ELF64 Linux.

Pada bulan Oktober, LockBit mulai mempromosikan fitur baru dari operasi Ransomware-as-a-Service mereka di forum peretasan RAMP, termasuk encryptor Linux baru yang menargetkan mesin virtual VMware ESXi.

Peneliti Trend Micro menganalisis encryptor Linux geng ransomware dan menjelaskan bagaimana itu digunakan untuk menargetkan instalasi VMWare ESXi dan vCenter.

Seperti encryptor Linux lainnya, LockBits menyediakan antarmuka baris perintah yang memungkinkan afiliasi untuk mengaktifkan dan menonaktifkan berbagai fitur untuk menyesuaikan serangan mereka.

Argumen baris perintah enkripsi LockBit Linux
Sumber: Trend Micro

Yang membuat encryptor linux LockBit menonjol adalah penggunaan luas utilitas baris perintah VMware ESXI dan VMware vCenter untuk memeriksa mesin virtual apa yang sedang berjalan dan untuk mematikannya dengan bersih sehingga tidak rusak saat dienkripsi.

Trend Micro menyatakan bahwa encryptor menggunakan AES untuk mengenkripsi file dan algoritma elliptic-curve cryptography (ECC) untuk mengenkripsi kunci dekripsi.

Dengan meluasnya penggunaan VMware ESXI di perusahaan, semua pembela jaringan dan profesional keamanan harus mengharapkan bahwa setiap operasi ransomware besar telah mengembangkan varian Linux.

Dengan membuat asumsi ini, admin dan profesional keamanan dapat membuat pertahanan dan rencana yang sesuai untuk melindungi semua perangkat di jaringan mereka, bukan hanya perangkat Windows.

Hal ini terutama berlaku untuk operasi LockBit, yang telah menjadi operasi ransomware paling menonjol sejak REvil ditutup dan membanggakan kecepatan dan rangkaian fitur enkripsinya.

Penting juga untuk diingat bahwa sebanyak kita menonton geng ransomware, mereka juga mengawasi kita kembali.

Ini berarti bahwa mereka memantau umpan sosial peneliti dan jurnalis untuk taktik, pertahanan, dan kerentanan terbaru yang kemudian dapat mereka gunakan terhadap target perusahaan.

Selengkapnya : Bleeping Computer

Tagged With: AES, ECC, enkripsi, Linux, LockBit, Ransomware, vCenter, VMware ESXi

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