GuLoader | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA2562803a6af28d635b93ad31a5a9d129bc4a4e143700013b1d660041aa02ccfb799
MD5d05a21133aa5d08220b385965bf678d2
File Typeexe
Size418.9 KB
First Seen2025-12-09
File NameFACTURA_081225.exe
Tagsexe, GuLoader

Malware Family: GuLoader

GuLoader, bulut downloader'dır.

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

Threat Indicators (IOC)

  • SHA256: 2803a6af28d635b93ad31a5a9d129bc4a4e143700013b1d660041aa02ccfb799
  • MD5: d05a21133aa5d08220b385965bf678d2

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: 2803a6af28d635b9"
        threat_level = "medium"
        first_seen = "2025-12-09"
    condition:
        hash.sha256(0, filesize) == "2803a6af28d635b93ad31a5a9d129bc4a4e143700013b1d660041aa02ccfb799"
}

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 2803a6af28d635b93ad31a5a9d129bc4a4e143700013b1d660041aa02ccfb799 # MD5 d05a21133aa5d08220b385965bf678d2
TypeValueNote
sha256 2803a6af28d635b93ad31a5a9d129bc4a4e143700013b1d660041aa02ccfb799 Sample:GuLoader
md5 d05a21133aa5d08220b385965bf678d2 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