GuLoader | Threat Level: medium | Type: Loader
Cryptographic Identifiers
| SHA256 | 4fcaa1b4bb8e2fc459e60db3cc8d9fd1df90cdaa4d165b66e771cd59573925f5 |
|---|---|
| MD5 | aab51d03a607bdbec19de45b0aa46da4 |
| File Type | exe |
| Size | 534.4 KB |
| First Seen | 2025-12-08 |
| File Name | 4fcaa1b4bb8e2fc459e60db3cc8d9fd1df90cdaa4d165b66e771cd59573925f5 |
| Tags | exe, GuLoader, signed |
Malware Family: GuLoader
GuLoader, bulut downloader'dır.
| Type | Loader |
|---|---|
| Programming Language | C |
| Target Platform | Windows |
| C2 Protocol | HTTPS |
| Purpose | Payload indirme |
| First Seen Year | 2019 |
| Aliases | CloudEyE |
Threat Indicators (IOC)
- SHA256:
4fcaa1b4bb8e2fc459e60db3cc8d9fd1df90cdaa4d165b66e771cd59573925f5 - MD5:
aab51d03a607bdbec19de45b0aa46da4
You can verify all hash values of this sample on VirusTotal.
System Cleanup Guide
- Disconnect the system from the network — the loader may be downloading more malware
- Analyze every downloaded payload
- Inspect all network traffic and cut suspicious connections
- Run a full antivirus scan
- Consider reimaging the system
YARA Rule Hints
rule GuLoader_SHA256 {
meta:
description = "GuLoader sample: 4fcaa1b4bb8e2fc4"
threat_level = "medium"
first_seen = "2025-12-08"
condition:
hash.sha256(0, filesize) == "4fcaa1b4bb8e2fc459e60db3cc8d9fd1df90cdaa4d165b66e771cd59573925f5"
}
GuLoader — Malware Profile
GuLoader/CloudEyE NSIS/VB dropper. recibo Ispanyolca makbuz. Çift locale tespiti. Registry silme.
Malware Type
Loader
Programming Language
C
C2 Protocol
HTTPS
Target Systems
Windows
Also Known As (AKA)
CloudEyE
Technical Details
Varyanta gore C/C#/VBS/PS1, anti-analysis (VM/debugger check), persistence (Registry/Task Scheduler/Startup folder), payload decryption ve injection (shellcode/PE), fileless execution teknikleri
Capabilities & Behavior
Payload İndirme
Süreç Enjeksiyonu
Modüler Mimari
Kimlik Bilgisi Hırsızlığı
Yanal Hareket
Kalıcılık
Anti-VM/Sandbox
İkincil Payload Dağıtımı
IOC List (2 indicators)
IOC — GuLoader
# SHA256
4fcaa1b4bb8e2fc459e60db3cc8d9fd1df90cdaa4d165b66e771cd59573925f5
# MD5
aab51d03a607bdbec19de45b0aa46da4
| Type | Value | Note |
|---|---|---|
| sha256 | 4fcaa1b4bb8e2fc459e60db3cc8d9fd1df90cdaa4d165b66e771cd59573925f5 | Sample:GuLoader |
| md5 | aab51d03a607bdbec19de45b0aa46da4 | Sample:GuLoader |
C2 Servers (4 recorded servers for this family)
| Address | Type | Port | Protocol | Status | Country |
|---|---|---|---|---|---|
| 45.155.37.29 | ip | 443 | HTTPS | inactive | RU |
| onedrive-cloud-storage.com | domain | 443 | HTTPS | inactive | US |
| 179.60.150.11 | ip | 80 | HTTP | inactive | SE |
| 185.250.151.13 | ip | 443 | HTTPS | inactive | DE |
C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.