deprecated/windows/proc_creation_win_powershell_base64_shellcode.yml

title: Potential PowerShell Base64 Encoded Shellcode
id: 2d117e49-e626-4c7c-bd1f-c3c0147774c8
status: deprecated
description: Detects potential powershell Base64 encoded Shellcode
references:
    - https://twitter.com/cyb3rops/status/1063072865992523776
author: Florian Roth (Nextron Systems)
date: 2018/11/17
modified: 2023/04/06
tags:
    - attack.defense_evasion
    - attack.t1027
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains:
            - 'OiCAAAAYInlM'
            - 'OiJAAAAYInlM'
    condition: selection
falsepositives:
    - Unknown
level: medium
feat: new rules, updates and fp fixes (#4162 ) 2023-04-11 13:04:22 +02:00			`title: Potential PowerShell Base64 Encoded Shellcode`
Added UUIDs to rules 2019-11-12 23:12:27 +01:00			`id: 2d117e49-e626-4c7c-bd1f-c3c0147774c8`
feat: new rules, updates and fp fixes (#4162 ) 2023-04-11 13:04:22 +02:00			`status: deprecated`
			`description: Detects potential powershell Base64 encoded Shellcode`
$frack113$ Change status for old rules 2021-11-27 11:33:14 +01:00			`references:`
Update selections and indentation 2022-07-07 20:13:45 +01:00			`- https://twitter.com/cyb3rops/status/1063072865992523776`
chore: add nextron authors tag 2023-02-01 11:14:59 +01:00			`author: Florian Roth (Nextron Systems)`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 23:36:31 +01:00			`date: 2018/11/17`
feat: new rules, updates and fp fixes (#4162 ) 2023-04-11 13:04:22 +02:00			`modified: 2023/04/06`
$frack113$ order yaml 2022-10-28 15:06:36 +02:00			`tags:`
			`- attack.defense_evasion`
			`- attack.t1027`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 23:36:31 +01:00			`logsource:`
Update selections and indentation 2022-07-07 20:13:45 +01:00			`category: process_creation`
			`product: windows`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 23:36:31 +01:00			`detection:`
feat: updates and fixes 2023-01-26 22:42:56 +01:00			`selection:`
Update selections and indentation 2022-07-07 20:13:45 +01:00			`CommandLine\|contains:`
			`- 'OiCAAAAYInlM'`
			`- 'OiJAAAAYInlM'`
feat: updates and fixes 2023-01-26 22:42:56 +01:00			`condition: selection`
Converted Sysmon/1 and Security/4688 to generic process creation rules 2019-01-16 23:36:31 +01:00			`falsepositives:`
Update selections and indentation 2022-07-07 20:13:45 +01:00			`- Unknown`
feat: new rules, updates and fp fixes (#4162 ) 2023-04-11 13:04:22 +02:00			`level: medium`