Cryptbb

MITRE ATT&CK does not currently catalogue Cryptbb, so this is our assessment of the techniques it uses, drawn from public reporting. The techniques themselves, and every "what that means" definition below, come from MITRE ATT&CK v19.2. Confidence: medium. Treat it as orientation, not attribution.

1. T1059.001 PowerShell Execution

   What they do: cryptbb executes PowerShell scripts to stage payloads and manipulate system processes during initial compromise.

   What that means: Adversaries may abuse PowerShell commands and scripts for execution.

2. T1106 Native API Execution

   What they do: cryptbb leverages native API calls to bypass detection while executing core ransomware functions on victim machines.

   What that means: Adversaries may interact with the native OS application programming interface (API) to execute behaviors.

3. T1547.001 Registry Run Keys / Startup Folder PersistencePrivilege Escalation

   What they do: cryptbb uses registry run keys to ensure malware execution upon user logon or system startup for persistence.

   What that means: Adversaries may achieve persistence by adding a program to a startup folder or referencing it with a Registry run key.

4. T1685 Disable or Modify Tools Defense Impairment

   What they do: cryptbb disables antivirus tools and security software to prevent system recovery and ensure encryption proceeds undetected.

   What that means: Adversaries may disable, degrade, or tamper with security tools or applications (e.g., endpoint detection and response (EDR) tools, intrusion detection systems (IDS), antivirus, logging agents, sensors, etc.) to impair or reduce visibility of defensive capabilities.

5. T1070.004 File Deletion Stealth

   What they do: cryptbb deletes Volume Shadow Copies and backup files via command-line tools to eliminate recovery options.

   What that means: Adversaries may delete files left behind by the actions of their intrusion activity.

6. T1018 Remote System Discovery Discovery

   What they do: cryptbb conducts remote system discovery to map network topology and identify additional high-value targets for infection.

   What that means: Adversaries may attempt to get a listing of other systems by IP address, hostname, or other logical identifier on a network that may be used for Lateral Movement from the current system.

7. T1083 File and Directory Discovery Discovery

   What they do: cryptbb performs file and directory discovery to identify critical data and system paths for targeted encryption.

   What that means: Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.

8. T1021.002 SMB/Windows Admin Shares Lateral Movement

   What they do: cryptbb exploits SMB/Windows Admin Shares to move laterally across networked systems within victim environments.

   What that means: Adversaries may use Valid Accounts to interact with a remote network share using Server Message Block (SMB).

9. T1486 Data Encrypted for Impact Impact

   What they do: cryptbb encrypts victim files using strong symmetric cryptography to maximize disruption and ransom demand leverage.

   What that means: Adversaries may encrypt data on target systems or on large numbers of systems in a network to interrupt availability to system and network resources.

10. T1490 Inhibit System Recovery Impact

    What they do: cryptbb invokes system recovery inhibitors like kill.bat to prevent automatic restoration attempts after encryption.

    What that means: Adversaries may delete or remove built-in data and turn off services designed to aid in the recovery of a corrupted system to prevent recovery.