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1 malware familyExploits CVEs in the wild

Hunters International

Also known ashunters_internationalworld_leaksworldleaks

World Leaks is a cyber extortion operation and Extortion-as-a-Service (EaaS) group that steals sensitive data from victim organizations and threatens to publish it on dark web leak infrastructure if ransom demands are not paid. The group is described in the content as a rebrand or splinter of Hunters International, with reporting placing its emergence in early 2025 or January 2025; some cited reporting also describes it as emerging in early 2024 and shifting in mid-2025 to an extortion-only model. Known aliases in the provided content are Hunters International, worldleaks, and world_leaks. The content consistently describes World Leaks as focusing primarily on data theft and extortion rather than file encryption, although one cited Darktrace case attributed to World Leaks in a healthcare environment involved both exfiltration and encryption, indicating affiliates may deviate from the group’s claimed extortion-only model. The group operates a dark web leak site and a victim negotiation portal with live chat, and some reporting says it also maintains an affiliate management panel and an "insider" platform intended to give journalists early access to stolen data to increase pressure on victims. Reported targeting spans healthcare, manufacturing, technology, government, media, telecommunications, energy, utilities, information technology, and defense-adjacent organizations. The content states that most identified victims are in the United States, with additional victims in Canada, Europe, India, and China. Victims and claimed victims mentioned in the content include Nike, Dell, UBS, Mediaworks, Legend Senior Living, the City of Los Angeles, and LAPD-related data exposed through a Los Angeles City Attorney’s Office third-party storage/discovery transfer system. Initial access methods attributed to World Leaks in the provided reporting include phishing, compromised credentials, valid VPN credentials, exploitation of exposed or public-facing services, RDP abuse, and brute force against exposed RDP. Reported operational tradecraft includes data discovery and exfiltration; use of SMB, RDP, SSH, PsExec, WinRM, and account manipulation; persistence via registry modifications and scheduled tasks; and exfiltration via custom tooling, Rclone, WinSCP as a fallback, MEGA, Backblaze, HTTPS, TOR, and Cloudflare-backed infrastructure. One intrusion described in detail involved brute forcing an exposed RDP service, disabling security controls with privacy.sexy, reconnaissance with SoftPerfect Network Scanner, use of a Cobalt Strike PowerShell stager, deployment of lactenin.exe, and use of RustyRocket (agent.exe), described as a custom World Leaks exfiltration platform, to collect files over SMB and exfiltrate them over HTTPS to thousands of Cloudflare IPs. That intrusion also involved tailored extortion notes for leadership and employees and use of Tor-based negotiation infrastructure. The content also notes overlap or association in reporting with Hive, Secp0 Ransomware, and UNC6148, but only as stated associations in the source material. Sub-groups are not directly identified in the provided content.

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OPERATIONAL PROFILE

Targeting

Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.

Who they target

Sectors the actor has been observed targeting.

  • retail
MITRE ATT&CK

Tradecraft

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

14 of 15 tactics63 techniques×N= number of intelligence reports citing this technique
MITRE ATT&CK
TA0043
Reconnaissance
3 techniques
T1590
Gather Victim Network Information
T1590.005
IP Addresses
T1592
Gather Victim Host Information
T1592.004
Client Configurations
T1598
Phishing for Information
TA0042
Resource Development
1 technique
T1588
Obtain Capabilities
T1588.001
Malware
TA0001
Initial Access
4 techniques
T1078×5
Valid Accounts
T1133×2
External Remote Services
T1190×5
Exploit Public-Facing Application
T1566×2
Phishing
TA0002
Execution
4 techniques
T1047×2
Windows Management Instrumentation
T1053
Scheduled Task/Job
T1059×2
Command and Scripting Interpreter
T1059.001
PowerShell
T1569
System Services
T1569.002×2
Service Execution
TA0003
Persistence
3 techniques
T1053
Scheduled Task/Job
T1078×5
Valid Accounts
T1133×2
External Remote Services
TA0004
Privilege Escalation
2 techniques
T1053
Scheduled Task/Job
T1078×5
Valid Accounts
TA0005
Stealth
4 techniques
T1006
Direct Volume Access
T1036
Masquerading
T1036.005
Match Legitimate Resource Name or Location
T1078×5
Valid Accounts
T1564
Hide Artifacts
T1564.005
Hidden File System
T1564.012
File/Path Exclusions
TA0006
Credential Access
2 techniques
T1110
Brute Force
T1552
Unsecured Credentials
T1552.001
Credentials In Files
TA0007
Discovery
5 techniques
T1016
System Network Configuration Discovery
T1018×2
Remote System Discovery
T1046×3
Network Service Discovery
T1083
File and Directory Discovery
T1135×2
Network Share Discovery
TA0008
Lateral Movement
4 techniques
T1021
Remote Services
T1021.001
Remote Desktop Protocol
T1021.002
SMB/Windows Admin Shares
T1021.004
SSH
T1080×2
Taint Shared Content
T1210×2
Exploitation of Remote Services
T1570×2
Lateral Tool Transfer
TA0009
Collection
4 techniques
T1005
Data from Local System
T1039×3
Data from Network Shared Drive
T1074×4
Data Staged
T1213
Data from Information Repositories
TA0011
Command and Control
5 techniques
T1071
Application Layer Protocol
T1071.001
Web Protocols
T1105
Ingress Tool Transfer
T1571×2
Non-Standard Port
T1572×2
Protocol Tunneling
T1573
Encrypted Channel
T1573.001×2
Symmetric Cryptography
TA0010
Exfiltration
5 techniques
T1020×2
Automated Exfiltration
T1041×6
Exfiltration Over C2 Channel
T1048×3
Exfiltration Over Alternative Protocol
T1537
Transfer Data to Cloud Account
T1567×4
Exfiltration Over Web Service
T1567.002
Exfiltration to Cloud Storage
TA0040
Impact
2 techniques
T1486×9
Data Encrypted for Impact
T1657×6
Financial Theft
IOCS

Observables

15 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.

IOC values are gated. View more in Mallory for domains, IPs, hashes, and other artifacts, or pipe them straight into your SIEM.

What this page doesn’t show

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Target overlap

Match sector + geo + tech-stack targeting against your real footprint.

Tradecraft mapping48

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

Malware arsenal1

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

Exploited CVEs2

CVEs this actor has used in known campaigns.

Detection signatures

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

Observables15

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