CircleCI Atomic Red Team doc generator
393 lines
12 KiB
Markdown
393 lines
12 KiB
Markdown
# T1222 - File and Directory Permissions Modification
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## [Description from ATT&CK](https://attack.mitre.org/wiki/Technique/T1222)
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<blockquote>File and directory permissions are commonly managed by discretionary access control lists (DACLs) specified by the file or directory owner. File and directory DACL implementations may vary by platform, but generally explicitly designate which users/groups can perform which actions (ex: read, write, execute, etc.). (Citation: Microsoft DACL May 2018) (Citation: Microsoft File Rights May 2018) (Citation: Unix File Permissions)
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Adversaries may modify file or directory permissions/attributes to evade intended DACLs. (Citation: Hybrid Analysis Icacls1 June 2018) (Citation: Hybrid Analysis Icacls2 May 2018) Modifications may include changing specific access rights, which may require taking ownership of a file or directory and/or elevated permissions such as Administrator/root depending on the file or directory's existing permissions to enable malicious activity such as modifying, replacing, or deleting specific files/directories. Specific file and directory modifications may be a required step for many techniques, such as establishing Persistence via [Accessibility Features](https://attack.mitre.org/techniques/T1015), [Logon Scripts](https://attack.mitre.org/techniques/T1037), or tainting/hijacking other instrumental binary/configuration files.</blockquote>
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## Atomic Tests
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- [Atomic Test #1 - Take ownership using takeown utility](#atomic-test-1---take-ownership-using-takeown-utility)
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- [Atomic Test #2 - Take ownership recursively using takeown utility](#atomic-test-2---take-ownership-recursively-using-takeown-utility)
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- [Atomic Test #3 - cacls - Grant permission to specified user or group](#atomic-test-3---cacls---grant-permission-to-specified-user-or-group)
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- [Atomic Test #4 - cacls - Grant permission to specified user or group recursively](#atomic-test-4---cacls---grant-permission-to-specified-user-or-group-recursively)
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- [Atomic Test #5 - icacls - Grant permission to specified user or group](#atomic-test-5---icacls---grant-permission-to-specified-user-or-group)
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- [Atomic Test #6 - icacls - Grant permission to specified user or group recursively](#atomic-test-6---icacls---grant-permission-to-specified-user-or-group-recursively)
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- [Atomic Test #7 - attrib - Remove read-only attribute](#atomic-test-7---attrib---remove-read-only-attribute)
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- [Atomic Test #8 - chmod - Change file or folder mode (numeric mode)](#atomic-test-8---chmod---change-file-or-folder-mode-numeric-mode)
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- [Atomic Test #9 - chmod - Change file or folder mode (symbolic mode)](#atomic-test-9---chmod---change-file-or-folder-mode-symbolic-mode)
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- [Atomic Test #10 - chmod - Change file or folder mode (numeric mode) recursively](#atomic-test-10---chmod---change-file-or-folder-mode-numeric-mode-recursively)
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- [Atomic Test #11 - chmod - Change file or folder mode (symbolic mode) recursively](#atomic-test-11---chmod---change-file-or-folder-mode-symbolic-mode-recursively)
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- [Atomic Test #12 - chown - Change file or folder ownership and group](#atomic-test-12---chown---change-file-or-folder-ownership-and-group)
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- [Atomic Test #13 - chown - Change file or folder ownership and group recursively](#atomic-test-13---chown---change-file-or-folder-ownership-and-group-recursively)
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- [Atomic Test #14 - chown - Change file or folder mode ownership only](#atomic-test-14---chown---change-file-or-folder-mode-ownership-only)
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- [Atomic Test #15 - chown - Change file or folder ownership recursively](#atomic-test-15---chown---change-file-or-folder-ownership-recursively)
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- [Atomic Test #16 - chattr - Remove immutable file attribute](#atomic-test-16---chattr---remove-immutable-file-attribute)
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<br/>
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## Atomic Test #1 - Take ownership using takeown utility
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Modifies the filesystem permissions of the specified file or folder to take ownership of the object.
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**Supported Platforms:** Windows
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_folder_to_own | Path of the file or folder for takeown to take ownership. | path | C:\AtomicRedTeam\atomics\T1222\T1222.yaml|
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#### Run it with `command_prompt`!
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```
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takeown.exe /f #{file_folder_to_own}
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```
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<br/>
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<br/>
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## Atomic Test #2 - Take ownership recursively using takeown utility
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Modifies the filesystem permissions of the specified folder to take ownership of it and its contents.
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**Supported Platforms:** Windows
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| folder_to_own | Path of the folder for takeown to take ownership. | path | C:\AtomicRedTeam\atomics\T1222|
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#### Run it with `command_prompt`!
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```
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takeown.exe /f #{folder_to_own} /r
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```
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<br/>
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<br/>
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## Atomic Test #3 - cacls - Grant permission to specified user or group
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Modifies the filesystem permissions of the specified file or folder to allow the specified user or group Full Control.
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**Supported Platforms:** Windows
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder to change permissions. | path | C:\AtomicRedTeam\atomics\T1222\T1222.yaml|
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| user_or_group | User or group to allow full control | string | Everyone|
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#### Run it with `command_prompt`!
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```
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cacls.exe #{file_or_folder} /grant #{user_or_group}:F
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```
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<br/>
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<br/>
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## Atomic Test #4 - cacls - Grant permission to specified user or group recursively
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Modifies the filesystem permissions of the specified folder and contents to allow the specified user or group Full Control.
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**Supported Platforms:** Windows
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder to change permissions. | path | C:\AtomicRedTeam\atomics\T1222|
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| user_or_group | User or group to allow full control | string | Everyone|
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#### Run it with `command_prompt`!
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```
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cacls.exe #{file_or_folder} /grant #{user_or_group}:F /t
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```
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<br/>
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<br/>
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## Atomic Test #5 - icacls - Grant permission to specified user or group
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Modifies the filesystem permissions of the specified file or folder to allow the specified user or group Full Control.
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**Supported Platforms:** Windows
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder to change permissions. | path | C:\AtomicRedTeam\atomics\T1222\T1222.yaml|
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| user_or_group | User or group to allow full control | string | Everyone|
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#### Run it with `command_prompt`!
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```
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icacls.exe #{file_or_folder} /grant #{user_or_group}:F
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```
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<br/>
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<br/>
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## Atomic Test #6 - icacls - Grant permission to specified user or group recursively
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Modifies the filesystem permissions of the specified folder and contents to allow the specified user or group Full Control.
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**Supported Platforms:** Windows
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder to change permissions. | path | C:\AtomicRedTeam\atomics\T1222|
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| user_or_group | User or group to allow full control | string | Everyone|
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#### Run it with `command_prompt`!
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```
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icacls.exe #{file_or_folder} /grant #{user_or_group}:F /t
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```
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<br/>
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<br/>
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## Atomic Test #7 - attrib - Remove read-only attribute
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Removes the read-only attribute from a file or folder using the attrib.exe command.
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**Supported Platforms:** Windows
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder remove attribute. | path | C:\AtomicRedTeam\atomics\T1222|
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#### Run it with `command_prompt`!
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```
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attrib.exe -r #{file_or_folder}
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```
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<br/>
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<br/>
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## Atomic Test #8 - chmod - Change file or folder mode (numeric mode)
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Changes a file or folder's permissions using chmod and a specified numeric mode.
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**Supported Platforms:** macOS, Linux
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder | path | /tmp/AtomicRedTeam/atomics/T1222|
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| numeric_mode | Specified numeric mode value | string | 755|
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#### Run it with `bash`!
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```
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chmod #{numeric_mode} #{file_or_folder}
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```
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<br/>
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<br/>
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## Atomic Test #9 - chmod - Change file or folder mode (symbolic mode)
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Changes a file or folder's permissions using chmod and a specified symbolic mode.
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**Supported Platforms:** macOS, Linux
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder | path | /tmp/AtomicRedTeam/atomics/T1222|
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| symbolic_mode | Specified symbolic mode value | string | a+w|
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#### Run it with `bash`!
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```
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chmod #{symbolic_mode} #{file_or_folder}
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```
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<br/>
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<br/>
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## Atomic Test #10 - chmod - Change file or folder mode (numeric mode) recursively
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Changes a file or folder's permissions recursively using chmod and a specified numeric mode.
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**Supported Platforms:** macOS, Linux
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder | path | /tmp/AtomicRedTeam/atomics/T1222|
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| numeric_mode | Specified numeric mode value | string | 755|
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#### Run it with `bash`!
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```
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chmod #{numeric_mode} #{file_or_folder} -R
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```
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<br/>
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<br/>
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## Atomic Test #11 - chmod - Change file or folder mode (symbolic mode) recursively
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Changes a file or folder's permissions recursively using chmod and a specified symbolic mode.
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**Supported Platforms:** macOS, Linux
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder | path | /tmp/AtomicRedTeam/atomics/T1222|
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| symbolic_mode | Specified symbolic mode value | string | a+w|
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#### Run it with `bash`!
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```
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chmod #{symbolic_mode} #{file_or_folder} -R
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```
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<br/>
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<br/>
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## Atomic Test #12 - chown - Change file or folder ownership and group
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Changes a file or folder's ownership and group information using chown.
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**Supported Platforms:** macOS, Linux
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder | path | /tmp/AtomicRedTeam/atomics/T1222/T1222.yaml|
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| owner | Username of desired owner | string | root|
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| group | Group name of desired group | string | root|
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#### Run it with `bash`!
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```
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chown #{owner}:#{group} #{file_or_folder}
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```
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<br/>
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<br/>
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## Atomic Test #13 - chown - Change file or folder ownership and group recursively
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Changes a file or folder's ownership and group information recursively using chown.
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**Supported Platforms:** macOS, Linux
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder | path | /tmp/AtomicRedTeam/atomics/T1222|
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| owner | Username of desired owner | string | root|
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| group | Group name of desired group | string | root|
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#### Run it with `bash`!
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```
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chown #{owner}:#{group} #{file_or_folder} -R
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```
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<br/>
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<br/>
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## Atomic Test #14 - chown - Change file or folder mode ownership only
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Changes a file or folder's ownership only using chown.
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**Supported Platforms:** macOS, Linux
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder | path | /tmp/AtomicRedTeam/atomics/T1222/T1222.yaml|
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| owner | Username of desired owner | string | root|
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#### Run it with `bash`!
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```
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chown #{owner} #{file_or_folder}
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```
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<br/>
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## Atomic Test #15 - chown - Change file or folder ownership recursively
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Changes a file or folder's ownership only recursively using chown.
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**Supported Platforms:** macOS, Linux
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_or_folder | Path of the file or folder | path | /tmp/AtomicRedTeam/atomics/T1222|
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| owner | Username of desired owner | string | root|
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#### Run it with `bash`!
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```
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chown #{owner} #{file_or_folder} -R
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```
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<br/>
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<br/>
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## Atomic Test #16 - chattr - Remove immutable file attribute
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Remove's a file's `immutable` attribute using `chattr`.
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This technique was used by the threat actor Rocke during the compromise of Linux web servers.
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**Supported Platforms:** macOS, Linux
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| file_to_modify | Path of the file | path | /var/spool/cron/root|
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#### Run it with `sh`!
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```
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chattr -i #{file_to_modify}
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```
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<br/>
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