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OpenSUpdater

Google Peringatkan Cara Baru Peretas Dapat Membuat Malware Tidak Terdeteksi di Windows

September 27, 2021 by Winnie the Pooh

Peneliti keamanan siber telah mengungkapkan teknik baru yang diadopsi oleh aktor siber untuk secara sengaja menghindari deteksi dengan bantuan tanda tangan digital yang cacat dari muatan malware-nya.

“Penyerang membuat tanda tangan kode cacat yang dianggap valid oleh Windows tetapi tidak dapat didekodekan atau diperiksa oleh kode OpenSSL – yang digunakan dalam sejumlah produk pemindaian keamanan,” Neel Mehta dari Google Threat Analysis Group mengatakan dalam sebuah tulisan yang diterbitkan pada hari Kamis.

Mekanisme baru ini diamati dieksploitasi oleh keluarga terkenal dari Unwanted Software yang dikenal sebagai OpenSUpdater yang digunakan untuk mengunduh dan menginstal program mencurigakan lainnya pada sistem yang disusupi.

Sebagian besar target kampanye adalah pengguna yang berada di A.S. yang cenderung mengunduh versi game yang sudah di-crack dan perangkat lunak ilegal lainnya.

Temuan ini berasal dari sekumpulan sampel OpenSUpdater yang diunggah ke VirusTotal setidaknya sejak pertengahan Agustus.

Sementara musuh di masa lalu mengandalkan sertifikat digital yang diperoleh secara ilegal untuk menyelinap adware dan perangkat lunak lain yang tidak diinginkan melewati alat pendeteksi malware atau dengan menyematkan kode serangan ke dalam tanda tangan digital, komponen perangkat lunak tepercaya dengan meracuni rantai pasokan perangkat lunak, OpenSUpdater menonjol karena penggunaan tanda tangan cacat yang disengaja untuk lolos dari pertahanan.

Sumber: The Hacker News

Tagged With: Cybersecurity, OpenSUpdater, Windows

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