GuLoader | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA2566e7d9dd5f3eb0f8af293daeb005c28d7c6a7d20c6aab2d2de616eb8f59f2d7a5
MD5bc8d1ff86e28f40bb38e92c27683bd2f
File Typejs
Size341.8 KB
First Seen2026-01-09
File NameContractvoorwaarden-pdf.js
TagsAgentTesla, GuLoader, js

Malware Family: GuLoader

GuLoader, bulut downloader'dır.

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

Threat Indicators (IOC)

  • SHA256: 6e7d9dd5f3eb0f8af293daeb005c28d7c6a7d20c6aab2d2de616eb8f59f2d7a5
  • MD5: bc8d1ff86e28f40bb38e92c27683bd2f

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: 6e7d9dd5f3eb0f8a"
        threat_level = "medium"
        first_seen = "2026-01-09"
    condition:
        hash.sha256(0, filesize) == "6e7d9dd5f3eb0f8af293daeb005c28d7c6a7d20c6aab2d2de616eb8f59f2d7a5"
}

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 6e7d9dd5f3eb0f8af293daeb005c28d7c6a7d20c6aab2d2de616eb8f59f2d7a5 # MD5 bc8d1ff86e28f40bb38e92c27683bd2f
TypeValueNote
sha256 6e7d9dd5f3eb0f8af293daeb005c28d7c6a7d20c6aab2d2de616eb8f59f2d7a5 Sample:GuLoader
md5 bc8d1ff86e28f40bb38e92c27683bd2f 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