Find sigma rule 
Attack: Signed Script Proxy Execution
Adversaries may use trusted scripts, often signed with certificates, to proxy the execution of malicious files. Several Microsoft signed scripts that have been downloaded from Microsoft or are default on Windows installations can be used to proxy execution of other files.(Citation: LOLBAS Project) This behavior may be abused by adversaries to execute malicious files that could bypass application control and signature validation on systems.(Citation: GitHub Ultimate AppLocker Bypass List)
MITRE
Tactic
- defense-evasion
technique
- T1216
Test : SyncAppvPublishingServer Signed Script PowerShell Command Execution
OS
- windows
Description:
Executes the signed SyncAppvPublishingServer script with options to execute an arbitrary PowerShell command. Upon execution, calc.exe will be launched.
Executor
command_prompt
Sigma Rule
-
proc_creation_win_lolbin_syncappvpublishingserver_vbs_execute_psh.yml (id: 36475a7d-0f6d-4dce-9b01-6aeb473bbaf1)
-
proc_creation_win_hktl_mimikatz_command_line.yml (id: a642964e-bead-4bed-8910-1bb4d63e3b4d)
-
proc_creation_win_powershell_set_policies_to_unsecure_level.yml (id: 87e3c4e8-a6a8-4ad9-bb4f-46e7ff99a180)
-
proc_creation_win_powershell_script_engine_parent.yml (id: 95eadcb2-92e4-4ed1-9031-92547773a6db)
-
proc_creation_win_powershell_non_interactive_execution.yml (id: f4bbd493-b796-416e-bbf2-121235348529)