Phobos — 928aca01498ca60e1dd3e263c462f3a04ef49b91 [928aca01]

Phobos | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA256	`928aca01498ca60e1dd3e263c462f3a04ef49b91d94b566293e8edfbc54fcf13`
MD5	`f8cd85837b695b2689a8f3dfb67d415b`
File Type	exe
Size	55.5 KB
First Seen	2022-12-26
File Name	928aca01498ca60e1dd3e263c462f3a04ef49b91d94b566293e8edfbc54fcf13
Tags	exe, Phobos, Ransomware

Malware Family: Phobos

Phobos, RDP açıkları kullanan ransomware'dir.

Type	Ransomware
Programming Language	C++
Target Platform	Windows
C2 Protocol	—
Purpose	RDP tabanlı ransomware
First Seen Year	2019
Aliases	Eking

Threat Indicators (IOC)

SHA256: 928aca01498ca60e1dd3e263c462f3a04ef49b91d94b566293e8edfbc54fcf13
MD5: f8cd85837b695b2689a8f3dfb67d415b

System Cleanup Guide

Sistemi ağdan DERHAL ayırın — diğer cihazlara yayılmayı durdurun
Do not pay the ransom — there is no guarantee your files will be restored
Quarantine the affected drives
Kullanılan fidye yazılımı ailesini belirleyin (nomoreransom.org)
Try available decryptor tools (the NoMoreRansom project)
Yetkililere ihbarda bulunun
Temiz bir yedekten kurtarın

YARA Rule Hints

rule Phobos_SHA256 {
    meta:
        description = "Phobos sample: 928aca01498ca60e"
        threat_level = "high"
        first_seen = "2022-12-26"
    condition:
        hash.sha256(0, filesize) == "928aca01498ca60e1dd3e263c462f3a04ef49b91d94b566293e8edfbc54fcf13"
}

Phobos — Malware Profile

Phobos, 2019 dan beri aktif Dharma kaynakli ransomware ailesidir. AES-256 + RSA-1024 hibrit sifreleme, email bazli fidye iletisimi. RDP brute force ile yayilir. C2 yok.

Malware Type

Ransomware

Programming Language

C++

C2 Protocol

—

Target Systems

Windows

Also Known As (AKA)

Eking

Technical Details

Phobos ransomware emerged in December 2018 as a derivative of Dharma/CrySis ransomware. Encrypts files using AES-256 with RSA-1024 key exchange. Files are renamed with victim ID, attacker email address, and .phobos extension. Distributed primarily through RDP brute force attacks. Deletes volume shadow copies via vssadmin, disables Windows recovery, and terminates backup processes. Adds persistence via HKCU\Software\Microsoft\Windows\CurrentVersion\Run registry key and Startup folder. Contact is exclusively via email embedded in ransom note (no web portal). Variant of Dharma that emerged after its source code leaked on underground forums.

Attribution / Threat Actor

WIZARD SPIDER (related lineage), Dharma/CrySis family

Capabilities & Behavior

Dosya Şifreleme (AES/RSA)

Gölge Kopya Silme

Yedek Kaldırma

Fidye Notu Oluşturma

Kalıcılık Sağlama

Ağ Paylaşımı Şifreleme

Anti-Analiz Teknikleri

Çift Gasp (Data Leak)

IOC List (2 indicators)

IOC — Phobos

# SHA256
928aca01498ca60e1dd3e263c462f3a04ef49b91d94b566293e8edfbc54fcf13

# MD5
f8cd85837b695b2689a8f3dfb67d415b

Type	Value	Note
sha256	928aca01498ca60e1dd3e263c462f3a04ef49b91d94b566293e8edfbc54fcf13
md5	f8cd85837b695b2689a8f3dfb67d415b

Phobos — Go to Full Profile →