Sinobi
Since Jul 5, 2025, Sinobi has listed 274 organizations on its leak site.
Listings per month
- Total listings
- 274
- First listing
- Jul 5, 2025
- Latest listing
- May 8, 2026
- MITRE ATT&CK techniques
- 25
Sinobi is a private vetted-affiliate RaaS group that emerged in mid-2025, believed to be a rebrand of the Lynx/INC ransomware lineage, claiming 176 victims by end of 2025 through double-extortion attacks primarily against mid-market US organizations via compromised SonicWall VPN credentials.
It posted 141 listings in the last 12 months; the busiest month was January 2026 (56 listings).
Most targeted country: United States, with 205 listings (75% of the total).
Most targeted sector: Manufacturing, with 65 listings (24% of the total).
Targeted countries
Showing 10 of 274 results
25 MITRE ATT&CK techniques across 11 stages are documented in the group's attacks.
- 1
Resource development
Infrastructure, accounts and tools for the attack are prepared.
T1587.001Develop Capabilities: MalwareT1588.002Obtain Capabilities: Tool - 2
Initial access
The attacker gets into the corporate network for the first time.
T1078Valid AccountsT1190Exploit Public-Facing ApplicationT1566Phishing - 3
Execution
Malicious code runs on the target system.
T1059.001Command and Scripting Interpreter: PowerShellT1059.003Command and Scripting Interpreter: Windows Command ShellT1106Native APIT1203Exploitation for Client ExecutionT1569.002System Services: Service Execution - 4
Persistence
Access survives reboots and password changes.
T1543.003Create or Modify System Process: Windows Service - 5
Privilege escalation
The attacker moves to accounts with higher privileges.
T1068Exploitation for Privilege Escalation - 6
Defense evasion
Security software and logging are bypassed.
T1027Obfuscated Files or InformationT1070Indicator RemovalT1070.004Indicator Removal: File DeletionT1562.001Impair Defenses: Disable or Modify Tools - 7
Discovery
Systems, accounts and data on the network are mapped.
T1046Network Service DiscoveryT1083File and Directory DiscoveryT1087.002Account Discovery: Domain Account - 8
Lateral movement
The attacker moves to other systems inside the network.
T1021.001Remote Services: Remote Desktop Protocol - 9
Command and control
Compromised systems are controlled remotely.
T1573.001Encrypted Channel: Symmetric Cryptography - 10
Exfiltration
Data is moved out of the organization; the threat to publish it in the listing relies on this data.
T1567.002Exfiltration Over Web Service: Exfiltration to Cloud Storage - 11
Impact
Systems are encrypted or services are stopped.
T1486Data Encrypted for ImpactT1489Service StopT1490Inhibit System Recovery
Published reports on this actor:
Source: MISP Galaxy, Malpedia.
What does a ransomware group do?
Ransomware groups break into corporate networks, move data out and encrypt systems. If the ransom is not paid, they list the organization on a leak site and threaten to publish the data.
How does Sinobi get into organizations?
The attacker gets into the corporate network for the first time.
- T1078 · Valid Accounts
- T1190 · Exploit Public-Facing Application
- T1566 · Phishing
Which defenses matter most?
Priority defenses based on the documented techniques:
- Keep internet-facing VPN, remote desktop and firewall interfaces patched, and require multi-factor authentication on these accounts.
- Allow scripts and macros only for users who need them, and keep behavioral rules enabled in endpoint protection.
- Monitor newly created services, scheduled tasks and startup entries.
- Reduce local administrator accounts and perform privileged tasks from separate, monitored accounts.
- Alert when security software is disabled or logs are cleared.
- Monitor accounts that run many queries in a short time and unusual network scans.
- Segment the network and expose management protocols only on the management network.
- Block unapproved use of remote management tools.
- Monitor unusual data volumes sent to cloud storage and file transfer services.
- Keep offline, immutable backups and test restores regularly.
What should you do if your organization is listed on a leak site?
- Record the listing and any published sample files; do not visit the leak site from the corporate network.
- Isolate affected systems and preserve logs without deleting them.
- Determine which data left the organization; if personal data is involved, review notification obligations with your legal team.
- Make any decision about the ransom demand together with legal, management and incident response.
- Do not bring systems back online before the attacker’s entry point is closed.
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