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rules/net_device/aaa/cisco_cli_clear_logs.yml

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+title: Clear Logs
+status: experimental
+description: Clear command history in network OS which is used for defense evasion.
+references:
+    - https://attack.mitre.org/techniques/T1146/
+    - https://attack.mitre.org/techniques/T1070/
+author: Austin Clark
+date: 2019/08/12
+tags:
+    - attack.defense_evasion
+    - attack.t1146
+    - attack.t1070
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - src
+    - CmdSet
+    - User
+    - Privilege_Level
+    - Remote_Address
+detection:
+    keywords:
+        - 'clear logging'
+        - 'clear archive'
+    condition: keywords
+falsepositives:
+    - Legitimate administrators may run these commands.
+level: high

rules/net_device/aaa/cisco_cli_collect_data.yml

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+title: Collect Data
+status: experimental
+description: Collect pertinent data from the configuration files
+references:
+    - https://attack.mitre.org/techniques/T1087/
+    - https://attack.mitre.org/techniques/T1003/
+    - https://attack.mitre.org/techniques/T1081/
+    - https://attack.mitre.org/techniques/T1005/
+author: Austin Clark
+date: 2019/08/11
+tags:
+    - attack.discovery
+    - attack.credential_access
+    - attack.collection
+    - attack.t1087
+    - attack.t1003
+    - attack.t1081
+    - attack.t1005
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - src
+    - CmdSet
+    - User
+    - Privilege_Level
+    - Remote_Address
+detection:
+    keywords:
+        - 'show running-config'
+        - 'show startup-config'
+        - 'show archive config'
+        - 'more'
+    condition: keywords
+falsepositives:
+    - Commonly run by administrators.
+level: low

rules/net_device/aaa/cisco_cli_crypto_actions.yml

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+title: Crypto Commands
+status: experimental
+description: Show when private keys are being exported from the device, or when new certificates are installed.
+references:
+    - https://attack.mitre.org/techniques/T1145/
+    - https://attack.mitre.org/techniques/T1130/
+author: Austin Clark
+date: 2019/08/12
+tags:
+    - attack.credential_access
+    - attack.defense_evasion
+    - attack.t1130
+    - attack.t1145
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - src
+    - CmdSet
+    - User
+    - Privilege_Level
+    - Remote_Address
+detection:
+    keywords:
+        - 'crypto pki export'
+        - 'crypto pki import'
+        - 'crypto pki trustpoint'
+    condition: keywords
+falsepositives:
+    - Not commonly run by administrators.  Also whitelist your known good certificates.
+level: high

rules/net_device/aaa/cisco_cli_disable_logging.yml

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+title: Disabling Logging
+status: experimental
+description: Turn off logging locally or remote
+references:
+    - https://attack.mitre.org/techniques/T1089
+author: Austin Clark
+date: 2019/08/11
+tags:
+    - attack.defense_evasion
+    - attack.t1089
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - src
+    - CmdSet
+    - User
+    - Privilege_Level
+    - Remote_Address
+detection:
+    keywords:
+        - 'no logging'
+        - 'no aaa new-model'
+    condition: keywords
+falsepositives:
+    - Unknown
+level: high

rules/net_device/aaa/cisco_cli_discovery.yml

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+title: Discovery
+status: experimental
+description: Find information about network devices that are not stored in config files.
+references:
+    - https://attack.mitre.org/tactics/TA0007/
+author: Austin Clark
+date: 2019/08/12
+tags:
+    - attack.discovery
+    - attack.t1083
+    - attack.t1201
+    - attack.t1057
+    - attack.t1018
+    - attack.t1082
+    - attack.t1016
+    - attack.t1049
+    - attack.t1033
+    - attack.t1124
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - src
+    - CmdSet
+    - User
+    - Privilege_Level
+    - Remote_Address
+detection:
+    keywords:
+        - 'dir'
+        - 'show processes'
+        - 'show arp'
+        - 'show cdp'
+        - 'show version'
+        - 'show ip route'
+        - 'show ip interface'
+        - 'show ip sockets'
+        - 'show users'
+        - 'show ssh'
+        - 'show clock'
+    condition: keywords
+falsepositives:
+    - Commonly used by administrators for troubleshooting
+level: low

rules/net_device/aaa/cisco_cli_dos.yml

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+title: Denial of Service
+status: experimental
+description: Detect a system being shutdown or put into different boot mode.
+references:
+    - https://attack.mitre.org/techniques/T1499/
+    - https://attack.mitre.org/techniques/T1495/
+author: Austin Clark
+date: 2019/08/15
+tags:
+    - attack.impact
+    - attack.t1499
+    - attack.t1495
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - CmdSet
+detection:
+    keywords:
+        - 'shutdown'
+        - 'config-register 0x2100'
+        - 'config-register 0x2142'
+    condition: keywords
+falsepositives:
+    - Legitimate administrators may run these commands, though rarely.
+level: medium

rules/net_device/aaa/cisco_cli_file_deletion.yml

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+title: Show Commands Input
+status: experimental
+description: See what files are being deleted from flash file systems
+references:
+    - https://attack.mitre.org/techniques/T1107/
+    - https://attack.mitre.org/techniques/T1488/
+    - https://attack.mitre.org/techniques/T1487/
+author: Austin Clark
+date: 2019/08/12
+tags:
+    - attack.defense_evasion
+    - attack.impact
+    - attack.t1107
+    - attack.t1488
+    - attack.t1487
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - CmdSet
+detection:
+    keywords:
+        - 'erase'
+        - 'delete'
+        - 'format'
+    condition: keywords
+falsepositives:
+    - Will be used sometimes by admins to clean up local flash space.
+level: medium

rules/net_device/aaa/cisco_cli_input_capture.yml

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+title: Show Commands Input
+status: experimental
+description: See what commands are being input into the device by other people, full credentials can be in the history
+references:
+    - https://attack.mitre.org/techniques/T1056/
+    - https://attack.mitre.org/techniques/T1139/
+author: Austin Clark
+date: 2019/08/11
+tags:
+    - attack.collection
+    - attack.credential_access
+    - attack.t1139
+    - attack.t1056
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - CmdSet
+detection:
+    keywords:
+        - 'show history'
+        - 'show history all'
+        - 'show logging'
+    condition: keywords
+falsepositives:
+    - Not commonly run by administrators, especially if remote logging is configured.
+level: medium

rules/net_device/aaa/cisco_cli_local_accounts.yml

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+title: Local Accounts
+status: experimental
+description: Find local accounts being created or modified as well as remote authentication configurations
+references:
+    - https://attack.mitre.org/techniques/T1098/
+    - https://attack.mitre.org/techniques/T1136/
+author: Austin Clark
+date: 2019/08/12
+tags:
+    - attack.persistence
+    - attack.t1136
+    - attack.t1098
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - CmdSet
+detection:
+    keywords:
+        - 'username'
+        - 'aaa'
+    condition: keywords
+falsepositives:
+    - When remote authentication is in place, this should not change often.
+level: high

rules/net_device/aaa/cisco_cli_modify_config.yml

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+title: Modify Configuration
+status: experimental
+description: Modifications to a config that will serve an adversary's impacts or persistence
+references:
+    - https://attack.mitre.org/techniques/T1100/
+    - https://attack.mitre.org/techniques/T1168/
+    - https://attack.mitre.org/techniques/T1493/
+author: Austin Clark
+date: 2019/08/12
+tags:
+    - attack.persistence
+    - attack.privilege_escalation
+    - attack.impact
+    - attack.t1493
+    - attack.t1100
+    - attack.t1168
+    - attack.t1490
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - CmdSet
+detection:
+    keywords:
+        - 'ip http server'
+        - 'ip https server'
+        - 'kron policy-list'
+        - 'kron occurrence'
+        - 'policy-list'
+        - 'access-list'
+        - 'ip access-group'
+        - 'archive maximum'
+    condition: keywords
+falsepositives:
+    - Legitimate administrators may run these commands.
+level: medium

rules/net_device/aaa/cisco_cli_moving_data.yml

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+title: Stage Data on device
+status: experimental
+description: Various protocols maybe used to put data on the device for exfil or infil
+references:
+    - https://attack.mitre.org/techniques/T1074/
+    - https://attack.mitre.org/techniques/T1105/
+    - https://attack.mitre.org/techniques/T1498/
+    - https://attack.mitre.org/techniques/T1002/
+author: Austin Clark
+date: 2019/08/12
+tags:
+    - attack.collection
+    - attack.lateral_movement
+    - attack.command_and_control
+    - attack.exfiltration
+    - attack.impact
+    - attack.t1074
+    - attack.t1105
+    - attack.t1492
+    - attack.t1002
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - CmdSet
+detection:
+    keywords:
+        - 'tftp'
+        - 'rcp'
+        - 'puts'
+        - 'copy'
+        - 'configure replace'
+        - 'archive tar'
+    condition: keywords
+falsepositives:
+    - Generally used to copy configs or IOS images.
+level: low

rules/net_device/aaa/cisco_cli_net_sniff.yml

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+title: Sniffing on a Network Device
+status: experimental
+description: Show when a monitor or a span/rspan is setup or modified
+references:
+    - https://attack.mitre.org/techniques/T1040
+author: Austin Clark
+date: 2019/08/11
+tags:
+    - attack.credential_access
+    - attack.discovery
+    - attack.t1040
+logsource:
+    product: cisco
+    service: aaa
+    category: accounting
+fields:
+    - CmdSet
+detection:
+    keywords:
+        - 'monitor capture point'
+        - 'set span'
+        - 'set rspan'
+    condition: keywords
+falsepositives:
+    - Admins may setup new or modify old spans, or use a monitor for troubleshooting.
+level: medium