D1R
Since Jul 13, 2026, D1R has listed 3 organizations on its leak site.
Listings per month
- Total listings
- 3
- First listing
- Jul 13, 2026
- Latest listing
- Jul 13, 2026
- MITRE ATT&CK techniques
- 15
D1R Claims Synopsys and Bosch Breaches, but Synopsys Disputes Intrusion
It posted 3 listings in the last 12 months; the busiest month was July 2026 (3 listings).
Most targeted country: United States, with 1 listings (33% of the total).
Most targeted sector: Technology, with 2 listings (67% of the total).
Targeted countries
Targeted sectors
Showing 3 of 3 results
15 MITRE ATT&CK techniques across 8 stages are documented in the group's attacks.
- 1
Initial access
The attacker gets into the corporate network for the first time.
T1078Valid AccountsT1190Exploit Public-Facing Application - 2
Persistence
Access survives reboots and password changes.
T1078Valid Accounts - 3
Privilege escalation
The attacker moves to accounts with higher privileges.
T1078Valid Accounts - 4
Credential access
Passwords, tokens and session data are stolen.
T1111Multi-Factor Authentication InterceptionT1649Steal or Forge Authentication Certificates - 5
Collection
Data to be stolen is selected and gathered.
T1213Data from Information RepositoriesT1530Data from Cloud Storage - 6
Exfiltration
Data is moved out of the organization; the threat to publish it in the listing relies on this data.
T1020Automated ExfiltrationT1041Exfiltration Over C2 ChannelT1048Exfiltration Over Alternative ProtocolT1567Exfiltration Over Web Service - 7
Impact
Systems are encrypted or services are stopped.
T1486Data Encrypted for ImpactT1657Financial Theft - 8
Other techniques
T1078Valid Accounts
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 D1R get into organizations?
The attacker gets into the corporate network for the first time.
- T1078 · Valid Accounts
- T1190 · Exploit Public-Facing Application
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.
- Monitor newly created services, scheduled tasks and startup entries.
- Reduce local administrator accounts and perform privileged tasks from separate, monitored accounts.
- Regularly check whether employee passwords and session cookies appear in infostealer logs.
- Monitor large file archiving operations.
- 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.
Is your organization mentioned?
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Customer intelligence on top of Infostealer Detection: leaked accounts of end users who sign in to your site.