GuLoader — 2025_Annual_Leave_Compliance_Report.gz.z [65d12cbd]

Cryptographic Identifiers

Malware Family: GuLoader

GuLoader, bulut üzerinden yük indirir.

Threat Indicators (IOC)

• SHA256: 65d12cbdcd5ccca79ee1ba3aeb99629232333a3551d40449e67b69d4ed383ad9
• MD5: 67341b7bfe870e7504d3fb11dfe65d8b

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: 65d12cbdcd5ccca7"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "65d12cbdcd5ccca79ee1ba3aeb99629232333a3551d40449e67b69d4ed383ad9"
}