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IceFire

IceFire ransomware sekarang mengenkripsi sistem Linux dan Windows

March 10, 2023 by Søren

Aktor ancaman yang terkait dengan operasi ransomware IceFire sekarang secara aktif menargetkan sistem Linux di seluruh dunia dengan enkripsi khusus yang baru.

Peneliti keamanan SentinelLabs menemukan bahwa geng tersebut telah menembus jaringan beberapa organisasi media dan hiburan di seluruh dunia dalam beberapa minggu terakhir, mulai pertengahan Februari, menurut sebuah laporan yang dibagikan sebelumnya dengan BleepingComputer.

Begitu berada di dalam jaringan mereka, penyerang menyebarkan varian malware baru mereka untuk mengenkripsi sistem Linux korban.

Ketika dijalankan, ransomware IceFire mengenkripsi file, menambahkan ekstensi ‘.ifire’ ke nama file, dan kemudian menutupi jejaknya dengan menghapus dirinya sendiri dan menghapus biner.

Penting juga untuk dicatat bahwa IceFire tidak mengenkripsi semua file di Linux. Ransomware secara strategis menghindari mengenkripsi jalur tertentu, memungkinkan bagian sistem penting tetap beroperasi.

Pendekatan yang diperhitungkan ini dimaksudkan untuk mencegah penghentian total sistem, yang dapat menyebabkan kerusakan yang tidak dapat diperbaiki dan bahkan gangguan yang lebih signifikan.

Meskipun aktif setidaknya sejak Maret 2022 dan sebagian besar tidak aktif sejak akhir November, ransomware IceFire kembali pada awal Januari dalam serangan baru, seperti yang ditunjukkan oleh pengiriman pada platform ID-Ransomware.

Operator IceFire mengeksploitasi kerentanan deserialisasi dalam perangkat lunak berbagi file IBM Aspera Faspex (dilacak sebagai CVE-2022-47986) untuk meretas sistem target yang rentan dan menyebarkan muatan ransomware mereka.

Kerentanan RCE pra-auth dengan tingkat keparahan tinggi ini ditambal oleh IBM pada bulan Januari dan telah dieksploitasi dalam serangan sejak awal Februari [1, 2] setelah perusahaan manajemen permukaan serangan Assetnote menerbitkan laporan teknis yang berisi kode eksploit.

CISA juga menambahkan kelemahan keamanan ke katalog kerentanannya yang dieksploitasi secara liar pada Februari 2021, memerintahkan agen federal untuk menambal sistem mereka hingga 14 Maret.

Selengkapnya: Bleeping Computer

Tagged With: IceFire, Linux, Ransomware, Windows

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