CM-7: Least Functionality
From NIST's SP800-53:
a. Configure the system to provide only [Assignment: organization-defined mission essential capabilities]; and b. Prohibit or restrict the use of the following functions, ports, protocols, software, and/or services: [Assignment: organization-defined prohibited or restricted functions, system ports, protocols, software, and/or services].
Cyber Threat Graph Context
Explore how this control relates to the wider threat graph
SP800-53 Control Mapped to NIST Cyber Security Framework
Generated from NISTs SP800-53/CSF Crosswalk mappings.
| Control ID | Description |
|---|---|
| PR.IP-1 | A baseline configuration of information technology/industrial control systems is created and maintained incorporating security principles (e.g. concept of least functionality) |
| PR.PT-3 | The principle of least functionality is incorporated by configuring systems to provide only essential capabilities |
MITRE ATT&CK Techniques
See which MITRE ATT&CK techniques this control helps to protect against.
| ATT&CK ID | Title | Associated Tactics |
|---|---|---|
| T1552.003 | Bash History | Credential Access |
| T1071.004 | DNS | Command and Control |
| T1048.001 | Exfiltration Over Symmetric Encrypted Non-C2 Protocol | Exfiltration |
| T1133 | External Remote Services | Initial Access, Persistence |
| T1136.002 | Domain Account | Persistence |
| T1213.001 | Confluence | Collection |
| T1218.004 | InstallUtil | Defense Evasion |
| T1498 | Network Denial of Service | Impact |
| T1553.004 | Install Root Certificate | Defense Evasion |
| T1036.007 | Double File Extension | Defense Evasion |
| T1557.002 | ARP Cache Poisoning | Collection, Credential Access |
| T1559.002 | Dynamic Data Exchange | Execution |
| T1003.002 | Security Account Manager | Credential Access |
| T1552.007 | Container API | Credential Access |
| T1562.006 | Indicator Blocking | Defense Evasion |
| T1557 | Adversary-in-the-Middle | Collection, Credential Access |
| T1218.008 | Odbcconf | Defense Evasion |
| T1053 | Scheduled Task/Job | Execution, Persistence, Privilege Escalation |
| T1559 | Inter-Process Communication | Execution |
| T1187 | Forced Authentication | Credential Access |
| T1610 | Deploy Container | Defense Evasion, Execution |
| T1036 | Masquerading | Defense Evasion |
| T1011.001 | Exfiltration Over Bluetooth | Exfiltration |
| T1047 | Windows Management Instrumentation | Execution |
| T1574 | Hijack Execution Flow | Defense Evasion, Persistence, Privilege Escalation |
| T1098.001 | Additional Cloud Credentials | Persistence, Privilege Escalation |
| T1003 | OS Credential Dumping | Credential Access |
| T1071 | Application Layer Protocol | Command and Control |
| T1218.012 | Verclsid | Defense Evasion |
| T1098.004 | SSH Authorized Keys | Persistence, Privilege Escalation |
| T1553.001 | Gatekeeper Bypass | Defense Evasion |
| T1195 | Supply Chain Compromise | Initial Access |
| T1197 | BITS Jobs | Defense Evasion, Persistence |
| T1095 | Non-Application Layer Protocol | Command and Control |
| T1482 | Domain Trust Discovery | Discovery |
| T1059.005 | Visual Basic | Execution |
| T1602.002 | Network Device Configuration Dump | Collection |
| T1104 | Multi-Stage Channels | Command and Control |
| T1098 | Account Manipulation | Persistence, Privilege Escalation |
| T1498.002 | Reflection Amplification | Impact |
| T1562.003 | Impair Command History Logging | Defense Evasion |
| T1071.003 | Mail Protocols | Command and Control |
| T1106 | Native API | Execution |
| T1136 | Create Account | Persistence |
| T1612 | Build Image on Host | Defense Evasion |
| T1564.002 | Hidden Users | Defense Evasion |
| T1563.001 | SSH Hijacking | Lateral Movement |
| T1102.001 | Dead Drop Resolver | Command and Control |
| T1530 | Data from Cloud Storage | Collection |
| T1543 | Create or Modify System Process | Persistence, Privilege Escalation |
| T1102.003 | One-Way Communication | Command and Control |
| T1218.003 | CMSTP | Defense Evasion |
| T1090.003 | Multi-hop Proxy | Command and Control |
| T1219 | Remote Access Software | Command and Control |
| T1573.002 | Asymmetric Cryptography | Command and Control |
| T1555.004 | Windows Credential Manager | Credential Access |
| T1553.005 | Mark-of-the-Web Bypass | Defense Evasion |
| T1218.013 | Mavinject | Defense Evasion |
| T1565.003 | Runtime Data Manipulation | Impact |
| T1546.008 | Accessibility Features | Persistence, Privilege Escalation |
| T1546.010 | AppInit DLLs | Persistence, Privilege Escalation |
| T1037 | Boot or Logon Initialization Scripts | Persistence, Privilege Escalation |
| T1037.001 | Logon Script (Windows) | Persistence, Privilege Escalation |
| T1557.001 | LLMNR/NBT-NS Poisoning and SMB Relay | Collection, Credential Access |
| T1602 | Data from Configuration Repository | Collection |
| T1080 | Taint Shared Content | Lateral Movement |
| T1216.001 | PubPrn | Defense Evasion |
| T1221 | Template Injection | Defense Evasion |
| T1048.003 | Exfiltration Over Unencrypted Non-C2 Protocol | Exfiltration |
| T1563.002 | RDP Hijacking | Lateral Movement |
| T1574.012 | COR_PROFILER | Defense Evasion, Persistence, Privilege Escalation |
| T1003.005 | Cached Domain Credentials | Credential Access |
| T1052.001 | Exfiltration over USB | Exfiltration |
| T1059.007 | JavaScript | Execution |
| T1499.003 | Application Exhaustion Flood | Impact |
| T1574.006 | Dynamic Linker Hijacking | Defense Evasion, Persistence, Privilege Escalation |
| T1599 | Network Boundary Bridging | Defense Evasion |
| T1129 | Shared Modules | Execution |
| T1499.004 | Application or System Exploitation | Impact |
| T1570 | Lateral Tool Transfer | Lateral Movement |
| T1053.005 | Scheduled Task | Execution, Persistence, Privilege Escalation |
| T1542.005 | TFTP Boot | Defense Evasion, Persistence |
| T1484 | Domain Policy Modification | Defense Evasion, Privilege Escalation |
| T1112 | Modify Registry | Defense Evasion |
| T1569.002 | Service Execution | Execution |
| T1542.004 | ROMMONkit | Defense Evasion, Persistence |
| T1003.001 | LSASS Memory | Credential Access |
| T1195.002 | Compromise Software Supply Chain | Initial Access |
| T1087 | Account Discovery | Discovery |
| T1647 | Plist File Modification | Defense Evasion |
| T1205.001 | Port Knocking | Command and Control, Defense Evasion, Persistence |
| T1573 | Encrypted Channel | Command and Control |
| T1059 | Command and Scripting Interpreter | Execution |
| T1499 | Endpoint Denial of Service | Impact |
| T1036.005 | Match Legitimate Name or Location | Defense Evasion |
| T1087.002 | Domain Account | Discovery |
| T1490 | Inhibit System Recovery | Impact |
| T1569 | System Services | Execution |
| T1105 | Ingress Tool Transfer | Command and Control |
| T1199 | Trusted Relationship | Initial Access |
| T1563 | Remote Service Session Hijacking | Lateral Movement |
| T1092 | Communication Through Removable Media | Command and Control |
| T1553.003 | SIP and Trust Provider Hijacking | Defense Evasion |
| T1204.001 | Malicious Link | Execution |
| T1546.006 | LC_LOAD_DYLIB Addition | Persistence, Privilege Escalation |
| T1574.007 | Path Interception by PATH Environment Variable | Defense Evasion, Persistence, Privilege Escalation |
| T1613 | Container and Resource Discovery | Discovery |
| T1525 | Implant Internal Image | Persistence |
| T1218.007 | Msiexec | Defense Evasion |
| T1546.002 | Screensaver | Persistence, Privilege Escalation |
| T1499.002 | Service Exhaustion Flood | Impact |
| T1564.008 | Email Hiding Rules | Defense Evasion |
| T1548.003 | Sudo and Sudo Caching | Defense Evasion, Privilege Escalation |
| T1021.003 | Distributed Component Object Model | Lateral Movement |
| T1505.004 | IIS Components | Persistence |
| T1218.002 | Control Panel | Defense Evasion |
| T1048.002 | Exfiltration Over Asymmetric Encrypted Non-C2 Protocol | Exfiltration |
| T1556.002 | Password Filter DLL | Credential Access, Defense Evasion, Persistence |
| T1557.003 | DHCP Spoofing | Collection, Credential Access |
| T1135 | Network Share Discovery | Discovery |
| T1008 | Fallback Channels | Command and Control |
| T1609 | Container Administration Command | Execution |
| T1553 | Subvert Trust Controls | Defense Evasion |
| T1564.006 | Run Virtual Instance | Defense Evasion |
| T1562.004 | Disable or Modify System Firewall | Defense Evasion |
| T1218.009 | Regsvcs/Regasm | Defense Evasion |
| T1562.002 | Disable Windows Event Logging | Defense Evasion |
| T1071.002 | File Transfer Protocols | Command and Control |
| T1048 | Exfiltration Over Alternative Protocol | Exfiltration |
| T1090.002 | External Proxy | Command and Control |
| T1204.003 | Malicious Image | Execution |
| T1648 | Serverless Execution | Execution |
| T1204 | User Execution | Execution |
| T1090 | Proxy | Command and Control |
| T1574.001 | DLL Search Order Hijacking | Defense Evasion, Persistence, Privilege Escalation |
| T1218.005 | Mshta | Defense Evasion |
| T1102 | Web Service | Command and Control |
| T1601.002 | Downgrade System Image | Defense Evasion |
| T1547.004 | Winlogon Helper DLL | Persistence, Privilege Escalation |
| T1489 | Service Stop | Impact |
| T1052 | Exfiltration Over Physical Medium | Exfiltration |
| T1602.001 | SNMP (MIB Dump) | Collection |
| T1565 | Data Manipulation | Impact |
| T1021.001 | Remote Desktop Protocol | Lateral Movement |
| T1072 | Software Deployment Tools | Execution, Lateral Movement |
| T1218.001 | Compiled HTML File | Defense Evasion |
| T1562.001 | Disable or Modify Tools | Defense Evasion |
| T1053.002 | At | Execution, Persistence, Privilege Escalation |
| T1573.001 | Symmetric Cryptography | Command and Control |
| T1572 | Protocol Tunneling | Command and Control |
| T1021.006 | Windows Remote Management | Lateral Movement |
| T1216 | System Script Proxy Execution | Defense Evasion |
| T1564.003 | Hidden Window | Defense Evasion |
| T1218.014 | MMC | Defense Evasion |
| T1552.005 | Cloud Instance Metadata API | Credential Access |
| T1548.001 | Setuid and Setgid | Defense Evasion, Privilege Escalation |
| T1218 | System Binary Proxy Execution | Defense Evasion |
| T1559.003 | XPC Services | Execution |
| T1574.009 | Path Interception by Unquoted Path | Defense Evasion, Persistence, Privilege Escalation |
| T1190 | Exploit Public-Facing Application | Initial Access |
| T1011 | Exfiltration Over Other Network Medium | Exfiltration |
| T1220 | XSL Script Processing | Defense Evasion |
| T1553.006 | Code Signing Policy Modification | Defense Evasion |
| T1071.001 | Web Protocols | Command and Control |
| T1601 | Modify System Image | Defense Evasion |
| T1562 | Impair Defenses | Defense Evasion |
| T1021.002 | SMB/Windows Admin Shares | Lateral Movement |
| T1601.001 | Patch System Image | Defense Evasion |
| T1046 | Network Service Discovery | Discovery |
| T1090.001 | Internal Proxy | Command and Control |
| T1556 | Modify Authentication Process | Credential Access, Defense Evasion, Persistence |
| T1498.001 | Direct Network Flood | Impact |
| T1562.009 | Safe Mode Boot | Defense Evasion |
| T1204.002 | Malicious File | Execution |
| T1068 | Exploitation for Privilege Escalation | Privilege Escalation |
| T1021.005 | VNC | Lateral Movement |
| T1546.009 | AppCert DLLs | Persistence, Privilege Escalation |
| T1548 | Abuse Elevation Control Mechanism | Defense Evasion, Privilege Escalation |
| T1552 | Unsecured Credentials | Credential Access |
| T1102.002 | Bidirectional Communication | Command and Control |
| T1127 | Trusted Developer Utilities Proxy Execution | Defense Evasion |
| T1548.004 | Elevated Execution with Prompt | Defense Evasion, Privilege Escalation |
| T1136.003 | Cloud Account | Persistence |
| T1176 | Browser Extensions | Persistence |
| T1205 | Traffic Signaling | Command and Control, Defense Evasion, Persistence |
| T1599.001 | Network Address Translation Traversal | Defense Evasion |
| T1087.001 | Local Account | Discovery |
| T1547.007 | Re-opened Applications | Persistence, Privilege Escalation |
| T1622 | Debugger Evasion | Defense Evasion, Discovery |
| T1537 | Transfer Data to Cloud Account | Exfiltration |
| T1547.006 | Kernel Modules and Extensions | Persistence, Privilege Escalation |
| T1564.009 | Resource Forking | Defense Evasion |
| T1574.008 | Path Interception by Search Order Hijacking | Defense Evasion, Persistence, Privilege Escalation |
| T1213.002 | Sharepoint | Collection |
| T1213 | Data from Information Repositories | Collection |
| T1571 | Non-Standard Port | Command and Control |
| T1611 | Escape to Host | Privilege Escalation |
| T1195.001 | Compromise Software Dependencies and Development Tools | Initial Access |
| T1499.001 | OS Exhaustion Flood | Impact |
| T1210 | Exploitation of Remote Services | Lateral Movement |