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You are here: Home / News / Malware Glupteba Kembali Beraksi Setelah Gangguan Google

Malware Glupteba Kembali Beraksi Setelah Gangguan Google

December 19, 2022 by Flamango

Botnet malware Glupteba telah beraksi kembali, menginfeksi perangkat di seluruh dunia setelah operasinya diganggu oleh Google hampir setahun yang lalu.

Pada Desember 2021, Google berhasil menyebabkan gangguan secara besar-besaran pada botnet yang mengaktifkan blockchain, mengamankan perintah pengadilan untuk mengambil kendali atas infrastruktur botnet dan mengajukan keluhan terhadap dua operator Rusia.

Nozomi melaporkan transaksi blockchain, pendaftaran sertifikat TLS, dan sampel rekayasa balik Glupteba menunjukkan kampanye Glupteba skala besar baru yang dimulai pada Juni 2022 dan masih berlangsung.

Menemukan fungsi yang digunakan untuk mengambil domain C2 (Nozomi)

Bersembunyi di Blockchain
Glupteba adalah malware modular berkemampuan blockchain yang menginfeksi perangkat Windows untuk menambang cryptocurrency, mencuri kredensial dan cookie pengguna, dan menyebarkan proxy pada sistem Windows dan perangkat IoT.

Malware ini sebagian besar didistribusikan melalui malvertising pada jaringan bayar-per-instal (PPI) dan sistem distribusi lalu lintas (TDS) yang mendorong penginstal yang menyamar sebagai perangkat lunak, video, dan film gratis.

Glupteba menggunakan blockchain Bitcoin untuk menghindari gangguan dengan menerima daftar terbaru dari server perintah dan kontrol yang harus dihubungi untuk menjalankan perintah.

Klien botnet mengambil alamat server C2 menggunakan fungsi temukan yang menyebutkan server dompet Bitcoin, mengambil transaksi mereka, dan mem-parsingnya untuk menemukan alamat terenkripsi AES.

Diagram transaksi blockchain. Dari kiri ke kanan, kampanye 2022 (paling kompleks), 2021, 2020, dan 2019 (Nozomi)

Kembalinya Glupteba
Menurut Nozomi, penggunaan blockchain dengan cara yang sama membuat analis Glupteba memindai seluruh blockchain untuk menemukan domain C2 yang tersembunyi.

Dalam investigasi oleh Nozomi, ditemukan sejumlah 15 alamat Bitcoin yang digunakan dalam empat kampanye Glupteba.

Berdasarkan hasil penuturan Nozomi diatas, mulai dari jumlah layanan tersembunyi TOR yang digunakan sebagai server C2 yang meningkat sepuluh kali lipat sejak kampanye 2021, banyak pendaftaran domain Glupteba melalui data DNS pasif dan lainnya, menandakan bahwa botnet Glupteba telah kembali, dan terdapat tanda-tanda yang menunjukkan botnet ini lebih masif dari sebelumnya, bahkan berpotensi lebih tangguh.

Selengkapnya: BLEEPINGCOMPUTER

Tagged With: Blockchain, Botnet, Glupteba, Google, Malware

Tagged With: blockchain, Google, Malware

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