Phobos | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA2564d30670f6311dc373dcbfb5bd93cf1621b1d6c425c8c9a95dc0a1317d0bdf648
MD5cebe17fcdfe9daf1438d2ba986fac811
File Typeexe
Size55.5 KB
First Seen2023-03-15
File NameAntiRecuvaAndDB.bin
TagsPhobos

Malware Family: Phobos

Phobos, RDP ransomware'dir.

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

Threat Indicators (IOC)

  • SHA256: 4d30670f6311dc373dcbfb5bd93cf1621b1d6c425c8c9a95dc0a1317d0bdf648
  • MD5: cebe17fcdfe9daf1438d2ba986fac811

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: 4d30670f6311dc37"
        threat_level = "high"
        first_seen = "2023-03-15"
    condition:
        hash.sha256(0, filesize) == "4d30670f6311dc373dcbfb5bd93cf1621b1d6c425c8c9a95dc0a1317d0bdf648"
}

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 4d30670f6311dc373dcbfb5bd93cf1621b1d6c425c8c9a95dc0a1317d0bdf648 # MD5 cebe17fcdfe9daf1438d2ba986fac811
TypeValueNote
sha256 4d30670f6311dc373dcbfb5bd93cf1621b1d6c425c8c9a95dc0a1317d0bdf648 Sample:Phobos
md5 cebe17fcdfe9daf1438d2ba986fac811 Sample:Phobos
Tags
phobosransomwaremalwarehighsha256hash-analizi