Kriptografik Tanımlayıcılar
| SHA256 | 81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a |
|---|---|
| MD5 | 7378712fa2b8cfa0b87ef80ca12e3ebd |
| Dosya Türü | exe |
| Boyut | 55.5 KB |
| İlk Görülme | 2022-10-11 |
| Dosya Adı | 81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a |
| Etiketler | Phobos |
Malware Ailesi: Phobos
Phobos, RDP açıkları kullanan ransomware'dir.
| Tür | Ransomware |
|---|---|
| Programlama Dili | C++ |
| Hedef Platform | Windows |
| C2 Protokolü | — |
| Amaç | RDP tabanlı ransomware |
| İlk Görülen Yıl | 2019 |
| Diğer İsimler | Eking |
Tehdit Göstergeleri (IOC)
- SHA256:
81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a - MD5:
7378712fa2b8cfa0b87ef80ca12e3ebd
Sistem Temizleme Rehberi
- Sistemi ağdan DERHAL ayırın — diğer cihazlara yayılmayı durdurun
- Fidye ödemeyin — dosyaları geri alma garantisi yoktur
- Etkilenen sürücüleri karantinaya alın
- Kullanılan fidye yazılımı ailesini belirleyin (nomoreransom.org)
- Mevcut decryptor tool'ları deneyin (NoMoreRansom projesi)
- Yetkililere ihbarda bulunun
- Temiz bir yedekten kurtarın
YARA Kuralı İpuçları
rule Phobos_SHA256 {
meta:
description = "Phobos sample: 81a5ac22ffef8e50"
threat_level = "high"
first_seen = "2022-10-11"
condition:
hash.sha256(0, filesize) == "81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a"
}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.
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
IOC List (2 indicators)
# SHA256
81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a
# MD5
7378712fa2b8cfa0b87ef80ca12e3ebd
| Type | Value | Note |
|---|---|---|
| sha256 | 81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a | |
| md5 | 7378712fa2b8cfa0b87ef80ca12e3ebd |