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Pemerintah AS peringatkan serangan ransomware Maui terhadap organisasi Health Services

July 8, 2022 by Eevee

FBI, CISA, dan Departemen Keuangan A.S. hari ini mengeluarkan peringatan bersama tentang aktor ancaman yang didukung Korea Utara yang menggunakan ransomware Maui dalam serangan terhadap organisasi Kesehatan dan Kesehatan Masyarakat (HPH).

Mulai Mei 2021, FBI telah menanggapi dan mendeteksi beberapa serangan ransomware Maui yang berdampak pada organisasi Sektor HPH di seluruh AS.

Menurut laporan ancaman yang ditulis oleh reverse engineer utama Stairwell Silas Cutler, ransomware Maui disebarkan secara manual di seluruh jaringan korban yang disusupi, dengan operator jarak jauh menargetkan file tertentu yang ingin mereka enkripsi.

Sementara Stairwell mengumpulkan sampel Maui pertama pada awal April 2022, semua sampel ransomware Maui memiliki stempel waktu kompilasi yang sama pada 15 April 2021.

Maui juga menonjol dibandingkan dengan jenis ransomware lainnya dengan tidak menjatuhkan catatan tebusan pada sistem terenkripsi untuk memberikan instruksi pemulihan data kepada korban.

File enkripsi ransomware Maui (BleepingComputer)

Tiga agen federal AS juga memberikan indikator kompromi (IOC) yang diperoleh FBI saat menanggapi serangan ransomware Maui sejak Mei 2021.

Mereka juga mendesak organisasi Sektor HPH untuk menerapkan mitigasi dan menerapkan serangkaian tindakan yang dibagikan dalam penasihat bersama untuk mempersiapkan, mencegah, dan menanggapi insiden ransomware.

Paling tidak, pembela jaringan disarankan untuk melatih pengguna untuk menemukan dan melaporkan upaya phishing, mengaktifkan dan menerapkan otentikasi multi-faktor di seluruh organisasi mereka, dan selalu memperbarui perangkat lunak antivirus dan antimalware di semua host.

Agen federal juga “sangat tidak menganjurkan” korban untuk membayar tuntutan tebusan dari pelaku ancaman di balik serangan ransomware Maui dan mengingatkan organisasi HPH tentang nasihat yang dikeluarkan oleh Departemen Keuangan mengenai risiko sanksi yang terkait dengan pembayaran ransomware.

Aktivitas ransomware Maui (ID-Ransomware)

Tagged With: health services, HPH, Korea Utara, Ransomware Maui

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