GuLoader | Threat Level: medium | Type: Loader

Cryptographic Identifiers

SHA25678e6e35c2a458be47941212011f2108bcc1d867d48633a03cd34d7faca01bf46
MD56671c8c7359d1d3ed63e6a00aca38f4f
File Typeace
Size1183.7 KB
First Seen2026-04-13
File NameContract_Documents,_Payment_Receipts,_and_Outstanding_Invoice.ace
Tagsace, 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: 78e6e35c2a458be47941212011f2108bcc1d867d48633a03cd34d7faca01bf46
  • MD5: 6671c8c7359d1d3ed63e6a00aca38f4f

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: 78e6e35c2a458be4"
        threat_level = "medium"
        first_seen = "2026-04-13"
    condition:
        hash.sha256(0, filesize) == "78e6e35c2a458be47941212011f2108bcc1d867d48633a03cd34d7faca01bf46"
}

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 78e6e35c2a458be47941212011f2108bcc1d867d48633a03cd34d7faca01bf46 # MD5 6671c8c7359d1d3ed63e6a00aca38f4f
TypeValueNote
sha256 78e6e35c2a458be47941212011f2108bcc1d867d48633a03cd34d7faca01bf46 Sample:GuLoader
md5 6671c8c7359d1d3ed63e6a00aca38f4f 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