GuLoader - Sample SHA256: 51771df7 | Medium Threat Analysis

Cryptographic Identifiers

Malware Family: GuLoader

GuLoader, bulut üzerinden yük indirir.

Threat Indicators (IOC)

• SHA256: 51771df79ca5612d65803f45b4e87185bfe0198f533376ba9315e9738a5e844e
• MD5: 439541f88ab6577be17899b5e5506880

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: 51771df79ca5612d"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "51771df79ca5612d65803f45b4e87185bfe0198f533376ba9315e9738a5e844e"
}