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Malware

WorldLeaks

WorldLeaks is a ransomware threat group/malware name referenced as part of ransomware alliances active in 2025. The provided content places WorldLeaks alongside Qilin and SafePay as central to alliances targeting business services, manufacturing, and healthcare. The context identifies it within broader ransomware activity characterized by extortion operations and collaboration among groups, but does not provide specific technical details on WorldLeaks’ malware functionality, infection chain, payload behavior, or indicators of compromise. Based on the available content, the high-confidence assessment is that WorldLeaks is associated with ransomware operations targeting business services, manufacturing, and healthcare sectors as part of cooperative criminal alliances.

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MITRE ATT&CK

Techniques & procedures

3 distinct techniques documented for this family, organized by ATT&CK tactic.

Collection

1 technique
T1074Data StagedEvidence1

On March 20, 2026, the WorldLeaks ransomware group added the City of Los Angeles to the list of victims on its data leak site. The ransomware group claimed the theft of 159.9 GB (779 files).

Exfiltration

1 technique
T1567Exfiltration Over Web ServiceEvidence1

WorldLeaks is an extortion-focused cybercrime group that steals company data to pressure victims into paying, threatening public leaks if they refuse. The group emerged in 2025 after rebranding from Hunters International. Following increased law-enforcement pressure, it abandoned file encryption and shifted entirely to data theft and extortion.

Impact

1 technique
T1486Data Encrypted for ImpactEvidence1

WorldLeaks group hit Los Angeles and its Metro system, forcing a shutdown, while two Bay Area cities declared emergencies after ransomware attacks.

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Recent activity

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

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IOC matching

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Threat actor attribution

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

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

MITRE ATT&CK mapping3

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.