GuLoader | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA256b032278d8d40cb761a9f56ea0438656d722e67562f053edcf24c9fb54c6bad8b
MD5944f40d5c477f657d634bdceaf9941fc
File Typeexe
Size934.1 KB
First Seen2025-10-09
File Nameb032278d8d40cb761a9f56ea0438656d722e67562f053edcf24c9fb54c6bad8b
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: b032278d8d40cb761a9f56ea0438656d722e67562f053edcf24c9fb54c6bad8b
  • MD5: 944f40d5c477f657d634bdceaf9941fc

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: b032278d8d40cb76"
        threat_level = "medium"
        first_seen = "2025-10-09"
    condition:
        hash.sha256(0, filesize) == "b032278d8d40cb761a9f56ea0438656d722e67562f053edcf24c9fb54c6bad8b"
}

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 b032278d8d40cb761a9f56ea0438656d722e67562f053edcf24c9fb54c6bad8b # MD5 944f40d5c477f657d634bdceaf9941fc
TypeValueNote
sha256 b032278d8d40cb761a9f56ea0438656d722e67562f053edcf24c9fb54c6bad8b Sample:GuLoader
md5 944f40d5c477f657d634bdceaf9941fc 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