Phobos — Örnek SHA256: 91abe280 | High Tehdit Analizi

Phobos | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA256	`91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4`
MD5	`2519f369f426e4d2cdd88290d1c25d3c`
File Type	exe
Size	1773.0 KB
First Seen	2023-10-26
File Name	2519f369f426e4d2cdd88290d1c25d3c.exe
Tags	exe, Phobos

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: 91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4
MD5: 2519f369f426e4d2cdd88290d1c25d3c

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: 91abe280381d0faf"
        threat_level = "high"
        first_seen = "2023-10-26"
    condition:
        hash.sha256(0, filesize) == "91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4"
}

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
91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4 

# MD5
2519f369f426e4d2cdd88290d1c25d3c

Type	Value	Note
sha256	91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4	Sample:Phobos
md5	2519f369f426e4d2cdd88290d1c25d3c	Sample:Phobos

Phobos — Go to Full Profile →