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Egregor

Egregor Ransomware Mengancam Akan Merilis Data Perusahaan ke Media Massa

October 5, 2020 by Winnie the Pooh

Sebuah keluarga ransomware yang baru ditemukan bernama Egregor telah ditemukan, menggunakan taktik mencuri informasi perusahaan dan mengancam akan merilisnya ke “media massa” sebelum mengenkripsi semua file.

Menurut analisis dari Appgate, kode tersebut tampaknya merupakan spin-off dari Sekhmet ransomware – sebuah tautan yang juga dicatat oleh peneliti lain.

“Sampel yang kami analisis memiliki banyak teknik anti-analisis, seperti obfuscation code dan muatan yang dikemas,” menurut penelitian perusahaan, yang diumumkan hari Jumat.

“Selain itu, dalam salah satu tahapan eksekusi, muatan Egregor hanya dapat didekripsi jika kunci yang benar diberikan dalam baris perintah proses, yang berarti bahwa file tidak dapat dianalisis, baik secara manual atau menggunakan sandbox, jika sama persis baris perintah yang digunakan penyerang untuk menjalankan ransomware tidak tersedia.”

“Kami telah menemukan bahwa Egregor dapat menerima parameter tambahan melalui baris perintah, seperti ‘nomimikatz,’ ‘killrdp,’ ‘norename,’ antara lain,” kata Gustavo Palazolo, peneliti keamanan di Appgate.

“Saat ini, tim kami masih merekayasa balik malware untuk mendapatkan gambaran keseluruhan.”

Peneliti Appgate juga menemukan bahwa catatan tebusan menuntut pembayaran dalam waktu tiga hari – jika tidak, data sensitif akan bocor.

“Pada saat perilisan advisory, setidaknya ada 13 perusahaan berbeda yang terdaftar di ‘hall of shame’ mereka, termasuk perusahaan logistik global GEFCO, yang mengalami serangan cyber minggu lalu,” menurut perusahaan tersebut.

“Apa artinya? Artinya, segera setelah bocor di media massa, mitra dan klien Anda AKAN TAHU MASALAH Anda.”

“Sayangnya, tidak ada rincian tentang [jumlah pembayaran tebusan] dalam catatan tebusan atau di situs web Egregor,” kata peneliti tersebut kepada Threatpost.

“Untuk mendapatkan detail pembayaran, korban perlu membuka tautan yang menuju ke deep web yang disediakan Egregor dan mendapatkan instruksi dari penyerang melalui obrolan langsung.”

Baca berita selengkapnya pada tautan di bawah ini;
Source: The Threat Post

Tagged With: Cybersecurity, Egregor, Ransomware, Security, Sekhmet Ransomware, Sensitive Data

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