Phobos | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA2566cddf35c46560871864f22704655f8ff87dce6cb437c2b7521ed358d4597526a
MD51cc0566f1a104d1d670adca1a9787cac
File Typezip
Size56.2 KB
First Seen2022-12-30
File Name6cddf35c46560871864f22704655f8ff87dce6cb437c2b7521ed358d4597526a
TagsPhobos, zip

Malware Family: Phobos

Phobos, RDP ransomware'dir.

TypeRansomware
Programming LanguageC++
Target PlatformWindows
C2 Protocol
PurposeRDP ransomware
First Seen Year2019
AliasesEking

Threat Indicators (IOC)

  • SHA256: 6cddf35c46560871864f22704655f8ff87dce6cb437c2b7521ed358d4597526a
  • MD5: 1cc0566f1a104d1d670adca1a9787cac

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

System Cleanup Guide

  1. Sistemi ağdan DERHAL ayırın — diğer cihazlara yayılmayı durdurun
  2. Do not pay the ransom — there is no guarantee your files will be restored
  3. Quarantine the affected drives
  4. Kullanılan fidye yazılımı ailesini belirleyin (nomoreransom.org)
  5. Try available decryptor tools (the NoMoreRansom project)
  6. Report the incident to the authorities (cybercrime unit)
  7. Temiz bir yedekten kurtarın; yedeğiniz yoksa sürücüyü saklayın

YARA Rule Hints

rule Phobos_SHA256 {
    meta:
        description = "Phobos sample: 6cddf35c46560871"
        threat_level = "high"
        first_seen = "2022-12-30"
    condition:
        hash.sha256(0, filesize) == "6cddf35c46560871864f22704655f8ff87dce6cb437c2b7521ed358d4597526a"
}

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 6cddf35c46560871864f22704655f8ff87dce6cb437c2b7521ed358d4597526a # MD5 1cc0566f1a104d1d670adca1a9787cac
TypeValueNote
sha256 6cddf35c46560871864f22704655f8ff87dce6cb437c2b7521ed358d4597526a Sample:Phobos
md5 1cc0566f1a104d1d670adca1a9787cac Sample:Phobos
Tags
phobosransomwaremalwarehighsha256hash-analizi