GuLoader | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA256db5e5169cd11c7eab04e2d8e49b3c835df6c7578474683a86246f04fdbbcfebc
MD5276fbce9d9d8d6296f88f9eb34d15754
File Typetar
Size505.7 KB
First Seen2026-05-20
File NamejustificantePago_es_1806578899-04-03-2026.tar
TagsGuLoader, tar

Malware Family: GuLoader

GuLoader, bulut üzerinden yük indirir.

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

Threat Indicators (IOC)

  • SHA256: db5e5169cd11c7eab04e2d8e49b3c835df6c7578474683a86246f04fdbbcfebc
  • MD5: 276fbce9d9d8d6296f88f9eb34d15754

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: db5e5169cd11c7ea"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "db5e5169cd11c7eab04e2d8e49b3c835df6c7578474683a86246f04fdbbcfebc"
}

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 db5e5169cd11c7eab04e2d8e49b3c835df6c7578474683a86246f04fdbbcfebc # MD5 276fbce9d9d8d6296f88f9eb34d15754
TypeValueNote
sha256 db5e5169cd11c7eab04e2d8e49b3c835df6c7578474683a86246f04fdbbcfebc Sample:GuLoader
md5 276fbce9d9d8d6296f88f9eb34d15754 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