System Scripts Autorun Keys Modification

Title: System Scripts Autorun Keys Modification
Status: test
Description:Detects modification of autostart extensibility point (ASEP) in registry.
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md
  -https://learn.microsoft.com/en-us/sysinternals/downloads/autoruns
  -https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d
Author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)
Date: 2019-10-25
modified:2023-08-17
Tags:

• -'attack.privilege-escalation'
• -'attack.persistence'
• -'attack.t1547.001'

Logsource:

• category: registry_set
• product: windows

Detection:
  scripts_base:
    TargetObject|contains: '\Software\Policies\Microsoft\Windows\System\Scripts'
  scripts:
    TargetObject|contains:
      -'\Startup'
      -'\Shutdown'
      -'\Logon'
      -'\Logoff'

  filter:
    Details: '(Empty)'
  condition:scripts_base and scripts and not filter
Falsepositives:
  -Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason
  -Legitimate administrator sets up autorun keys for legitimate reason
Level: medium