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Latin America

Malware Chaes menyerang pelanggan platform e-commerce terbesar di Amerika Latin

November 19, 2020 by Winnie the Pooh

Malware yang sebelumnya tidak dikenal telah terdeteksi dalam serangan yang meluas terhadap pelanggan e-commerce di Amerika Latin.

Malware, yang dijuluki Chaes oleh para peneliti Cybereason Nocturnus, digunakan oleh pelaku ancaman di seluruh wilayah LATAM (Latin America) untuk mencuri informasi keuangan.

Dalam sebuah posting blog, tim keamanan siber mengatakan pelanggan Brasil dari perusahaan e-commerce terbesar di kawasan itu, MercadoLivre, adalah fokus dari malware infostealing tersebut.

Pertama kali terdeteksi pada akhir tahun 2020 oleh Cybereason, Chaes disebarkan melalui kampanye phishing, di mana email mengklaim bahwa pembelian di platform MercadoLivre telah berhasil. Untuk mencoba dan meningkatkan tampilan email agar terlihat sah, pelaku ancaman juga menambahkan “dipindai oleh Avast” pada footer.

Pesan tersebut berisi lampiran file .docx berbahaya. Assaf Dahan, Kepala Peneliti di Cybereason, mengatakan kepada ZDNet bahwa lampiran tersebut memanfaatkan “teknik injeksi template, menggunakan fitur bawaan Microsoft Word untuk mengambil muatan dari server jarak jauh.”

Jika korban mengklik file tersebut, kerentanan digunakan untuk membuat sambungan dengan server command-and-control (C2) penyerang, serta mendownload muatan berbahaya pertama, file .msi.

File ini kemudian menyebarkan file .vbs yang digunakan untuk menjalankan proses lain, serta uninstall.dll dan engine.bin, yang keduanya bertindak sebagai “engine” malware. Trio file yang lain – hhc.exe, hha.dll dan chaes1.bin – diinstal yang menyatukan komponen utama Chaes. Modul penambangan cryptocurrency juga dicatat.

Berita selengkapnya dapat dibaca pada tautan di bawah ini;
Source: ZDNet

Tagged With: Chaes Malware, Cybersecurity, e-commerce, Infostealer, Latin America, MercadoLivre, Phishing, Security

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