RelayKing
Hunt this family in your stack
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
Vulnerabilities exploited
1 CVE Mallory has correlated with this family across public research and vendor advisories. Each row links to the full Mallory page for that vulnerability.
CVE-2025–33073 — an NTLM relay vulnerability operationalised through a tool called RelayKing, which automates domain-wide NTLM relay reconnaissance and credential capture post-foothold.
Techniques & procedures
3 distinct techniques documented for this family, organized by ATT&CK tactic.
Initial Access
1 techniqueTheir main focus is on exposed edge devices such as Fortinet FortiGate VPN appliances and Cisco systems... Once they find a vulnerable or misconfigured device, they use it as a gateway inside... Three vulnerabilities they actively track include CVE-2024-55591... CVE-2025-32433... and CVE-2025-33073...
Credential Access
1 techniqueDiscovery
1 techniqueOne key operator known as qbit was specifically observed scanning for Fortinet VPNs and running NTLM relay checks using a tool called RelayKing.
Collection
1 techniqueRecent activity
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.