Blackbyte
Since Oct 4, 2021, Blackbyte has listed 147 organizations on its leak site.
Listings per month
- Total listings
- 147
- First listing
- Oct 4, 2021
- Latest listing
- Jul 30, 2025
- MITRE ATT&CK techniques
- 60
Ransomware. Uses dropper written in JavaScript to deploy a .NET payload.
It posted no listings in the last 12 months.
Most targeted country: United States, with 14 listings (10% of the total).
Most targeted sector: Manufacturing, with 31 listings (21% of the total).
Targeted countries
Showing 10 of 147 results
60 MITRE ATT&CK techniques across 14 stages are documented in the group's attacks.
- 1
Resource development
Infrastructure, accounts and tools for the attack are prepared.
T1583.003Acquire Infrastructure: Virtual Private ServerT1608.001Stage Capabilities: Upload Malware - 2
Initial access
The attacker gets into the corporate network for the first time.
T1078Valid AccountsT1078.002Valid Accounts: Domain AccountsT1190Exploit Public-Facing Application - 3
Execution
Malicious code runs on the target system.
T1047Windows Management InstrumentationT1053.005Scheduled Task/Job: Scheduled TaskT1059.001Command and Scripting Interpreter: PowerShellT1059.003Command and Scripting Interpreter: Windows Command ShellT1569.002System Services: Service Execution - 4
Persistence
Access survives reboots and password changes.
T1053.005Scheduled Task/Job: Scheduled TaskT1078Valid AccountsT1078.002Valid Accounts: Domain AccountsT1112Modify RegistryT1136.002Create Account: Domain AccountT1505.003Server Software Component: Web ShellT1543.003Create or Modify System Process: Windows ServiceT1547.001Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder - 5
Privilege escalation
The attacker moves to accounts with higher privileges.
T1053.005Scheduled Task/Job: Scheduled TaskT1055Process InjectionT1055.012Process Injection: Process HollowingT1068Exploitation for Privilege EscalationT1078Valid AccountsT1078.002Valid Accounts: Domain AccountsT1134.003Access Token Manipulation: Make and Impersonate TokenT1543.003Create or Modify System Process: Windows ServiceT1547.001Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder - 6
Credential access
Passwords, tokens and session data are stolen.
T1003OS Credential Dumping - 7
Discovery
Systems, accounts and data on the network are mapped.
T1012Query RegistryT1016System Network Configuration DiscoveryT1018Remote System DiscoveryT1046Network Service DiscoveryT1082System Information DiscoveryT1087.002Account Discovery: Domain AccountT1135Network Share DiscoveryT1482Domain Trust DiscoveryT1518.001Software Discovery: Security Software DiscoveryT1614.001System Location Discovery: System Language Discovery - 8
Lateral movement
The attacker moves to other systems inside the network.
T1021.001Remote Services: Remote Desktop ProtocolT1021.002Remote Services: SMB/Windows Admin SharesT1570Lateral Tool Transfer - 9
Collection
Data to be stolen is selected and gathered.
T1560Archive Collected Data - 10
Command and control
Compromised systems are controlled remotely.
T1071.001Application Layer Protocol: Web ProtocolsT1105Ingress Tool TransferT1219Remote Access Tools - 11
Exfiltration
Data is moved out of the organization; the threat to publish it in the listing relies on this data.
T1041Exfiltration Over C2 ChannelT1567Exfiltration Over Web Service - 12
Impact
Systems are encrypted or services are stopped.
T1486Data Encrypted for ImpactT1490Inhibit System RecoveryT1491.001Defacement: Internal Defacement - 13
Other techniques
T1036.008Masquerading: Masquerade File TypeT1055Process InjectionT1055.012Process Injection: Process HollowingT1070.004Indicator Removal: File DeletionT1078Valid AccountsT1078.002Valid Accounts: Domain AccountsT1134.003Access Token Manipulation: Make and Impersonate TokenT1140Deobfuscate/Decode Files or InformationT1480Execution GuardrailsT1112Modify Registry
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 Blackbyte get into organizations?
The attacker gets into the corporate network for the first time.
- T1078 · Valid Accounts
- T1078.002 · Valid Accounts: Domain 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.
- 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.
- 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.
- Monitor large file archiving operations.
- 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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