GuLoader | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA256dfe21021c3e6c809c779c2f12e590d8da42b0e9b3f96b1e900046f1f31b3c995
MD54f07bf2a384031c4c673c7b68590efc1
File Typeexe
Size536.2 KB
First Seen2025-10-09
File Namedfe21021c3e6c809c779c2f12e590d8da42b0e9b3f96b1e900046f1f31b3c995
Tagsexe, GuLoader, signed

Malware Family: GuLoader

GuLoader, bulut downloader'dır.

TypeLoader
Programming LanguageC
Target PlatformWindows
C2 ProtocolHTTPS
PurposePayload indirme
First Seen Year2019
AliasesCloudEyE

Threat Indicators (IOC)

  • SHA256: dfe21021c3e6c809c779c2f12e590d8da42b0e9b3f96b1e900046f1f31b3c995
  • MD5: 4f07bf2a384031c4c673c7b68590efc1

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Disconnect the system from the network — the loader may be downloading more malware
  2. Analyze every downloaded payload
  3. Inspect all network traffic and cut suspicious connections
  4. Run a full antivirus scan
  5. Consider reimaging the system

YARA Rule Hints

rule GuLoader_SHA256 {
    meta:
        description = "GuLoader sample: dfe21021c3e6c809"
        threat_level = "medium"
        first_seen = "2025-10-09"
    condition:
        hash.sha256(0, filesize) == "dfe21021c3e6c809c779c2f12e590d8da42b0e9b3f96b1e900046f1f31b3c995"
}

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 dfe21021c3e6c809c779c2f12e590d8da42b0e9b3f96b1e900046f1f31b3c995 # MD5 4f07bf2a384031c4c673c7b68590efc1
TypeValueNote
sha256 dfe21021c3e6c809c779c2f12e590d8da42b0e9b3f96b1e900046f1f31b3c995 Sample:GuLoader
md5 4f07bf2a384031c4c673c7b68590efc1 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.

Tags
guloaderloadermalwaremediumsha256hash-analizi