GuLoader | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA2567e8b929cbad53884580408d8291423520353a6eb24fbd55e9f148084ad6366f4
MD5d5b74557d514f4b86e3d0dbe32eedfd3
File Typeexe
Size1208.7 KB
First Seen2025-12-15
File NameFACTURA PDF..exe
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: 7e8b929cbad53884580408d8291423520353a6eb24fbd55e9f148084ad6366f4
  • MD5: d5b74557d514f4b86e3d0dbe32eedfd3

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: 7e8b929cbad53884"
        threat_level = "medium"
        first_seen = "2025-12-15"
    condition:
        hash.sha256(0, filesize) == "7e8b929cbad53884580408d8291423520353a6eb24fbd55e9f148084ad6366f4"
}

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 7e8b929cbad53884580408d8291423520353a6eb24fbd55e9f148084ad6366f4 # MD5 d5b74557d514f4b86e3d0dbe32eedfd3
TypeValueNote
sha256 7e8b929cbad53884580408d8291423520353a6eb24fbd55e9f148084ad6366f4 Sample:GuLoader
md5 d5b74557d514f4b86e3d0dbe32eedfd3 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