Cryptographic Identifiers
| SHA256 | 3f88affd9a69bad96f8152c87654aed50cc7a49247f154d503cacbdcd53ba825 |
|---|---|
| MD5 | d9736333f5abddf50bc889402e788f82 |
| File Type | exe |
| Size | 56.0 KB |
| First Seen | 2022-12-18 |
| File Name | 3f88affd9a69bad96f8152c87654aed50cc7a49247f154d503cacbdcd53ba825 |
| 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:
3f88affd9a69bad96f8152c87654aed50cc7a49247f154d503cacbdcd53ba825 - MD5:
d9736333f5abddf50bc889402e788f82
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: 3f88affd9a69bad9"
threat_level = "high"
first_seen = "2022-12-18"
condition:
hash.sha256(0, filesize) == "3f88affd9a69bad96f8152c87654aed50cc7a49247f154d503cacbdcd53ba825"
}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
3f88affd9a69bad96f8152c87654aed50cc7a49247f154d503cacbdcd53ba825
# MD5
d9736333f5abddf50bc889402e788f82
| Type | Value | Note |
|---|---|---|
| sha256 | 3f88affd9a69bad96f8152c87654aed50cc7a49247f154d503cacbdcd53ba825 | Sample:Phobos |
| md5 | d9736333f5abddf50bc889402e788f82 | Sample:Phobos |