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You are here: Home / News / Serangan Cyber Terhadap Pemerintah Timur Tengah Sembunyikan Malware di logo Windows

Serangan Cyber Terhadap Pemerintah Timur Tengah Sembunyikan Malware di logo Windows

October 1, 2022 by Søren

Seorang aktor ancaman yang berfokus pada spionase telah diamati menggunakan trik steganografi untuk menyembunyikan backdoor yang sebelumnya tidak didokumentasikan dalam logo Windows dalam serangannya terhadap pemerintah Timur Tengah.

Tim Pemburu Ancaman Symantec dari Broadcom mengaitkan alat yang diperbarui ke grup peretasan yang dilacaknya dengan nama Witchetty, yang juga dikenal sebagai LookingFrog, subgrup yang beroperasi di bawah payung TA410.

Analisis terbaru Symantec tentang serangan antara Februari dan September 2022, di mana kelompok itu menargetkan pemerintah dua negara Timur Tengah dan bursa saham negara Afrika, menyoroti penggunaan pintu belakang lain yang disebut Stegmap.

Malware baru memanfaatkan steganografi – teknik yang digunakan untuk menyematkan pesan (dalam hal ini, malware) dalam dokumen non-rahasia – untuk mengekstrak kode berbahaya dari gambar bitmap logo Microsoft Windows lama yang dihosting di repositori GitHub.

“Menyamarkan muatan dengan cara ini memungkinkan penyerang untuk meng-host-nya di layanan gratis dan tepercaya,” kata para peneliti. “Unduhan dari host tepercaya seperti GitHub jauh lebih kecil kemungkinannya untuk menimbulkan tanda bahaya daripada unduhan dari server command-and-control (C&C) yang dikendalikan penyerang.”

Stegmap, seperti backdoor lainnya, memiliki beragam fitur yang memungkinkannya melakukan operasi manipulasi file, mengunduh dan menjalankan file yang dapat dieksekusi, menghentikan proses, dan membuat modifikasi Windows Registry.

Serangan yang mengarah pada penyebaran Stegmap mempersenjatai kerentanan ProxyLogon dan ProxyShell di Exchange Server untuk menjatuhkan web shell China Chopper, yang kemudian digunakan untuk melakukan pencurian kredensial dan aktivitas pergerakan lateral, sebelum meluncurkan malware LookBack.

Selengkapnya: The Hacker News

Tagged With: Cyber Attack, Cyber Espionage, Malware

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