Blackmatter
Since Sep 8, 2021, Blackmatter has listed 32 organizations on its leak site.
Listings per month
- Total listings
- 32
- First listing
- Sep 8, 2021
- Latest listing
- Nov 4, 2021
- MITRE ATT&CK techniques
- 14
Ransomware-as-a-Service
It posted no listings in the last 12 months.
Most targeted country: United States, with 2 listings (6% of the total).
Most targeted sector: Agriculture and Food Production, with 6 listings (19% of the total).
Targeted countries
Showing 10 of 32 results
14 MITRE ATT&CK techniques across 9 stages are documented in the group's attacks.
- 1
Initial access
The attacker gets into the corporate network for the first time.
T1078Valid Accounts - 2
Execution
Malicious code runs on the target system.
T1047Windows Management InstrumentationT1053.005Scheduled Task/Job: Scheduled Task - 3
Defense evasion
Security software and logging are bypassed.
T1027Obfuscated Files or InformationT1562.001Disable or Modify Tools - 4
Credential access
Passwords, tokens and session data are stolen.
T1003OS Credential Dumping - 5
Discovery
Systems, accounts and data on the network are mapped.
T1082System Information DiscoveryT1135Network Share Discovery - 6
Lateral movement
The attacker moves to other systems inside the network.
T1021.001Remote Services: Remote Desktop ProtocolT1021.002Remote Services: SMB/Windows Admin Shares - 7
Command and control
Compromised systems are controlled remotely.
T1071.001Application Layer Protocol: Web Protocols - 8
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 - 9
Impact
Systems are encrypted or services are stopped.
T1486Data Encrypted for ImpactT1490Inhibit System Recovery
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 Blackmatter get into organizations?
The attacker gets into the corporate network for the first time.
- T1078 · Valid Accounts
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.
- Alert when security software is disabled or logs are cleared.
- Regularly check whether employee passwords and session cookies appear in infostealer logs.
- 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.
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.