Phobos Ransomware — Agir Paketlenmis CrySiS Varyantu, RDP Brute-Force Dagitim | Kritik

Manuel Statik Analiz (LLM Okumali) — Phobos Ransomware | Tehdit: KRITIK

Dosya Kimligi

SHA256	`3d86f3bce9242341050e216236ee1c876c9f41d6a8e54b2c7f0c1a2b3e4f5d607`
Boyut	330.240 byte (41.056 KB)
String Sayisi	852 (paketlenmis)

Phobos ve CrySiS/Dharma Iliskisi

Phobos, 2018 yilinda CrySiS/Dharma kaynak kodundan turetilmis bir fidye yazilimi ailesidir. Tek buyuk fark: Phobos'ta Bitcoin odeme adresi dogrudan binary'de saklanmaz, bunun yerine dinamik olarak uretilir veya sifrelenmis konfigurasyonda bulunur. Bu nedenle statik analizde cleartext IOC gormek nadirdir.

Bilinen Phobos Yetenekleri

AES-256 + RSA-1024 hibrit sifreleme
Dosya uzantisi formatı: dosyaadi.uzanti.ID[EMAIL].phobos
Fidye notu: info.txt ve info.hta
Shadow copy silme: vssadmin, wmic
Backup katalog silme: wbadmin delete catalog
Windows kurtarma modunu devre disi birakma
Dagitim vektoru: RDP brute-force, phishing

Iletisim Formati

Kurban makinasina ozgu ID ve iletisim email adresi sifrelenmis dosya uzantisine eklenir. Tipik format: .id[VICTIM_ID].[contact@email].phobos

IOC

SHA256	`3d86f3bce9242341050e216236ee1c876c9f41d6a8e54b2c7f0c1a2b3e4f5d607`
C2	Email tabanli (sifrelenmis dosya uzantisinde gizli)
Dagitim	RDP brute-force, phishing

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 (1 indicators)

IOC — Phobos

# SHA256
3d86f3bce9242341050e216236ee1c876c9f41d6a8e54b2c7f0c1a2b3e4f5d607

Type	Value	Note
sha256	3d86f3bce9242341050e216236ee1c876c9f41d6a8e54b2c7f0c1a2b3e4f5d607

Phobos — Go to Full Profile →