Phobos — Örnek SHA256: 523d9733 | High Tehdit Analizi

Phobos | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA256	`523d97331fcef84ff767dbb01836766d8b1be9bbeb3d76e9fda3a02ad46fd976`
MD5	`4165a3dba3c7ac26b225f8623f70ebaa`
File Type	exe
Size	236.5 KB
First Seen	2023-05-02
File Name	rundll64.exe
Tags	exe, Phobos, Ransomware

Malware Family: Phobos

Phobos, RDP ransomware'dir.

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

Threat Indicators (IOC)

SHA256: 523d97331fcef84ff767dbb01836766d8b1be9bbeb3d76e9fda3a02ad46fd976
MD5: 4165a3dba3c7ac26b225f8623f70ebaa

You can verify all hash values of this sample on VirusTotal.

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)
Report the incident to the authorities (cybercrime unit)
Temiz bir yedekten kurtarın; yedeğiniz yoksa sürücüyü saklayın

YARA Rule Hints

rule Phobos_SHA256 {
    meta:
        description = "Phobos sample: 523d97331fcef84f"
        threat_level = "high"
        first_seen = "2023-05-02"
    condition:
        hash.sha256(0, filesize) == "523d97331fcef84ff767dbb01836766d8b1be9bbeb3d76e9fda3a02ad46fd976"
}

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
523d97331fcef84ff767dbb01836766d8b1be9bbeb3d76e9fda3a02ad46fd976 

# MD5
4165a3dba3c7ac26b225f8623f70ebaa

Type	Value	Note
sha256	523d97331fcef84ff767dbb01836766d8b1be9bbeb3d76e9fda3a02ad46fd976	Sample:Phobos
md5	4165a3dba3c7ac26b225f8623f70ebaa	Sample:Phobos

Phobos — Go to Full Profile →