Cryptographic Identifiers
| SHA256 | e27c8e8c5ad591a73c35ca6cc1b6890756097622f6f3f66b8c0ed72d11c91774 |
|---|---|
| MD5 | 0a91d2b8f294ffe3fbf9799c915c32cf |
| File Type | exe |
| Size | 28.0 KB |
| First Seen | 2026-05-11 |
| File Name | U888APP.exe |
| Tags | AsyncRAT, c2, exe, RAT, windows |
Malware Family: AsyncRAT
AsyncRAT, 2019'da sızdırılan açık kaynaklı RAT'tır.
| Type | RAT |
|---|---|
| Programming Language | .NET C# |
| Target Platform | Windows |
| C2 Protocol | TCP/SSL |
| Purpose | Uzaktan erişim, tuş kaydı |
| First Seen Year | 2019 |
| Aliases | AsyncClient |
Threat Indicators (IOC)
- SHA256:
e27c8e8c5ad591a73c35ca6cc1b6890756097622f6f3f66b8c0ed72d11c91774 - MD5:
0a91d2b8f294ffe3fbf9799c915c32cf
You can verify all hash values of this sample on VirusTotal.
System Cleanup Guide
- Disconnect the system from the network — unplug ethernet, disable Wi-Fi
- Terminate suspicious processes from Task Manager
- Run a full system scan with Malwarebytes or Kaspersky
- HKCU\Software\Microsoft\Windows\CurrentVersion\Run kayıtlarını kontrol edin
- Review newly created tasks in Task Scheduler
- Change all your account passwords from a clean device
- Gerekirse Windows'u yeniden yükleyin ve verilerinizi temiz bir yedeğe geri alın
YARA Rule Hints
rule AsyncRAT_SHA256 {
meta:
description = "AsyncRAT sample: e27c8e8c5ad591a7"
threat_level = "high"
first_seen = "2026-05-11"
condition:
hash.sha256(0, filesize) == "e27c8e8c5ad591a73c35ca6cc1b6890756097622f6f3f66b8c0ed72d11c91774"
}
AsyncRAT — Malware Profile
AsyncRAT, 2019'da acik kaynak olarak yayimlanan C# tabanli RAT ailesidir. Ekran yakalama, keylogger, dosya islemleri, HVNC ve plugin sistemine sahiptir. C2 AES-128-CBC ile sifrelenir, TCP uzerinden calisir. JS/PDF yemi ile dagitilir.
Technical Details
C# .NET, AES-128-CBC sifreleme, TCP port 6606/4449 (varsayilan), Mutex kontrol, Runtime assembly loading, Anti-analysis (VM check, Process listesi), HVNC, Keylogger, Stealer, Botnet modulu
Attribution / Threat Actor
Acik kaynak - orjinal gelistirici GitHub'da yayinladi; surekli siber suclu toplulugu tarafindan kullanilmaktadir. APT operasyonlari da dahil olmak uzere cok sayida farkli tehdit aktoru kullanmaktadir.
Capabilities & Behavior
IOC List (2 indicators)
# SHA256
e27c8e8c5ad591a73c35ca6cc1b6890756097622f6f3f66b8c0ed72d11c91774
# MD5
0a91d2b8f294ffe3fbf9799c915c32cf
| Type | Value | Note |
|---|---|---|
| sha256 | e27c8e8c5ad591a73c35ca6cc1b6890756097622f6f3f66b8c0ed72d11c91774 | Sample:AsyncRAT |
| md5 | 0a91d2b8f294ffe3fbf9799c915c32cf | Sample:AsyncRAT |
C2 Servers (8 recorded servers for this family)
| Address | Type | Port | Protocol | Status | Country |
|---|---|---|---|---|---|
| microsoft.com | domain | — | TCP | active | — |
| microsoft.com | domain | — | TCP | active | — |
| microsoft.com | domain | — | TCP | active | — |
| microsoft.com | domain | — | TCP | active | — |
| microsoft.com | domain | — | TCP | active | — |
| microsoft.com | domain | — | TCP | active | — |
| microsoft.com | domain | — | TCP | active | — |
| microsoft.com | domain | — | TCP | active | — |
C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.