1 malware family

Five Families

Also known asFive Families

Five Families is a hacktivist and ransomware grouping described as consisting of GhostSec, Stormous, ThreatSec, SiegedSec, and Blackforums. In the provided reporting, Halcyon linked HydraC2 to prior involvement with the Five Families group. The surrounding context places the group within a cluster of actors associated with disruptive cyber activity, particularly DDoS and hacktivist operations, but the only high-confidence details directly stated about Five Families are its composition and the reported link to HydraC2.

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MITRE ATT&CK

Tradecraft

1 distinct technique observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.

1 of 15 tactics1 techniques×N= number of intelligence reports citing this technique

MITRE ATT&CK

TA0040

Impact

1 technique

T1498

Network Denial of Service

ARSENAL

Associated malware families

1 malware family attributed to this actor across reporting.

FamilyContextEvidenceLast seen

HydraC2The RRC is monitoring activity and threat actors related to DDoS botnet HydraC2... HydraC2 is a high-reputation DDoS botnet operator that has been active since August 2023.1Mar 14, 2026

ACTIVITY FEED

Recent activity

1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

1 SOURCESView more in app

halcyon attacks lookoutNews

Mar 3, 2026

Iranian Use of Cybercriminal Tactics in Destructive Cyber Attacks: 2026 Updates

Named coalition of hacktivist and ransomware-linked groups associated in the content with HydraC2.

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Target overlap

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Tradecraft mapping1

Every observed MITRE ATT&CK technique, grouped by tactic.

Malware arsenal1

Families this actor is known to deploy, with IOCs and behavior.

Exploited CVEs

CVEs this actor has used in known campaigns.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Observables

Domains, IPs, and hashes tied to this actor, refreshed continuously.