Onepercent

MITRE ATT&CK does not currently catalogue Onepercent, 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: onepercent executes malicious commands via PowerShell scripts to stage payloads and manipulate system behavior.

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

2. T1106 Native API Execution

   What they do: onepercent leverages native API calls to bypass detection while performing critical attack functions on the host.

   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: onepercent modifies registry run keys and startup folders to ensure malware execution upon system reboot.

   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: onepercent disables security tools like antivirus software and monitoring agents to evade detection and persistence.

   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. T1027.013 Encrypted/Encoded File Stealth

   What they do: onepercent encodes victim files with custom encryption routines to ensure data integrity is irreversibly compromised.

   What that means: Adversaries may encrypt or encode files to obfuscate strings, bytes, and other specific patterns to impede detection.

6. T1070.004 File Deletion Stealth

   What they do: onepercent deletes Volume Shadow Copies and backup files via command-line tools to prevent data recovery.

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

7. T1083 File and Directory Discovery Discovery

   What they do: onepercent discovers files and directories using enumeration techniques to identify critical data for 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: onepercent uses SMB/Windows Admin Shares for lateral movement across networked systems within the victim environment.

   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: onepercent encrypts victim files using strong symmetric encryption to maximize impact and ransom demand.

   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: onepercent executes commands to inhibit system recovery processes, preventing automatic restoration mechanisms.

    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.

Software Onepercent has been seen using, grouped by what it is used for. Legitimate administration tools appear here because these actors routinely abuse them — presence in this list is not itself malicious.

Tool data from Ransomware Tool Matrix by BushidoUK, licensed CC BY 4.0. Grouped by purpose and matched to this group by Breach House.