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You are here: Home / News / Microsoft: Tujuan peretas SolarWinds adalah data cloud para korban

Microsoft: Tujuan peretas SolarWinds adalah data cloud para korban

December 30, 2020 by Winnie the Pooh

Seperti yang dijelaskan oleh Tim Defender Microsoft 365, setelah menyusup ke jaringan target dengan bantuan backdoor Sunburst, tujuan penyerang dibalik peretasan SolarWinds adalah untuk mendapatkan akses ke aset cloud korban.

“Dengan pijakan awal yang tersebar luas ini, para penyerang kemudian dapat memilih organisasi tertentu yang ingin mereka terus operasikan (sementara yang lain tetap menjadi pilihan kapan saja selama backdoor dipasang dan tidak terdeteksi)”, jelas Microsoft.

Artikel Microsoft sebelumnya tentang serangan rantai pasokan SolarWinds dan panduan dari Badan Keamanan Nasional (NSA) juga mengisyaratkan fakta bahwa tujuan akhir penyerang adalah menghasilkan token SAML (Security Assertion Markup Language) untuk memalsukan token otentikasi yang memungkinkan akses ke sumber daya cloud.

Sumber: Microsoft

Microsoft juga merinci prosedur langkah demi langkah yang digunakan oleh penyerang untuk mendapatkan akses ke aset cloud korban mereka:

  1. Menggunakan SolarWinds DLL yang telah dikompromikan untuk mengaktifkan backdoor yang memungkinkan penyerang untuk mengontrol dan mengoperasikan perangkat dari jarak jauh
  2. Menggunakan akses backdoor untuk mencuri kredensial, meningkatkan hak istimewa, dan bergerak secara lateral untuk mendapatkan kemampuan membuat token SAML yang valid menggunakan salah satu dari dua metode berikut:
    1. Mencuri sertifikat penandatanganan SAML (Jalur 1)
    2. Menambahkan atau mengubah kepercayaan federasi yang sudah ada (Jalur 2)
  3. Menggunakan token SAML yang dibuat penyerang untuk mengakses sumber daya cloud dan melakukan tindakan yang mengarah ke eksfiltrasi email dan persistensi di cloud

NSA merekomendasikan penerapan otentikasi multi-faktor, menghapus aplikasi yang tidak perlu dengan kredensial, menonaktifkan otentikasi lama, dan menggunakan Modul Keamanan Perangkat Keras (HSM) yang memvalidasi FIPS untuk mengamankan private key.

Sumber: Bleeping Computer

Tagged With: Cloud, Cybersecurity, SAML, SolarWinds, SolarWindsHack, Solorigate, SUNBURST

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