GuLoader | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA256a1404767833c42fbde7d5102c95a5c99f96b4803de5e28986b2719322e9e48cf
MD55a02c2f25cd6aaef8dc63901f6971530
File Typerar
Size873.8 KB
First Seen2026-05-20
File NameJustificante_transferencia_2025-11-05-14.24.38.684000.tar.rar
TagsGuLoader, rar

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: a1404767833c42fbde7d5102c95a5c99f96b4803de5e28986b2719322e9e48cf
  • MD5: 5a02c2f25cd6aaef8dc63901f6971530

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: a1404767833c42fb"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "a1404767833c42fbde7d5102c95a5c99f96b4803de5e28986b2719322e9e48cf"
}

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 a1404767833c42fbde7d5102c95a5c99f96b4803de5e28986b2719322e9e48cf # MD5 5a02c2f25cd6aaef8dc63901f6971530
TypeValueNote
sha256 a1404767833c42fbde7d5102c95a5c99f96b4803de5e28986b2719322e9e48cf Sample:GuLoader
md5 5a02c2f25cd6aaef8dc63901f6971530 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