GuLoader - Sample SHA256: 25a3b3bc | Medium Threat Analysis

Cryptographic Identifiers

Malware Family: GuLoader

GuLoader, bulut üzerinden yük indirir.

Threat Indicators (IOC)

• SHA256: 25a3b3bc5096d37bdf34466c28f5d04021cefe6a75d0bc3b8895f6c15a132b91
• MD5: 64d8ccfe4ccdb54652534bb0bb674594

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: 25a3b3bc5096d37b"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "25a3b3bc5096d37bdf34466c28f5d04021cefe6a75d0bc3b8895f6c15a132b91"
}