GuLoader | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA256250579e35460bd873940f00c1d19e39641ed25527ea706f7720ab227d96a78f0
MD59cf0ef95f4d6ef1bcf0da508591b9034
File Typeexe
Size675.1 KB
First Seen2025-11-24
File NameStrggarnsstof.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: 250579e35460bd873940f00c1d19e39641ed25527ea706f7720ab227d96a78f0
  • MD5: 9cf0ef95f4d6ef1bcf0da508591b9034

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: 250579e35460bd87"
        threat_level = "medium"
        first_seen = "2025-11-24"
    condition:
        hash.sha256(0, filesize) == "250579e35460bd873940f00c1d19e39641ed25527ea706f7720ab227d96a78f0"
}

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 250579e35460bd873940f00c1d19e39641ed25527ea706f7720ab227d96a78f0 # MD5 9cf0ef95f4d6ef1bcf0da508591b9034
TypeValueNote
sha256 250579e35460bd873940f00c1d19e39641ed25527ea706f7720ab227d96a78f0 Sample:GuLoader
md5 9cf0ef95f4d6ef1bcf0da508591b9034 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