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@@ -145,3 +145,60 @@ Detects the addition of process execution strings (`TgtProcCmdLine In Contains A
```
(SrcProcCmdScript ContainsCIS "Add-Content $profile -Value" AND SrcProcCmdScript ContainsCIS "Start-Process") OR (TgtProcCmdLine ContainsCIS "Add-Content $profile" AND TgtProcCmdLine In Contains Anycase ("Start-Process","& ","cmd.exe /c"))
```
### T1055.012 Process Hollowing
Atomics: [T1055.012](https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1055.012/T1055.012.md)
Detect Process Hollowing using the Start-Hollow powershell script, through CommandLine or CommandScript indicators.
The `IndicatorCategory = "Injection"` has a lot of noise, but in the future a combination of `EventType = "Duplicate Process Handle" AND TgtProcRelation = "storyline_child"` joined with some `ChildProcCount` or `CrossProcCount` > 0 may help filter the noise.
```
--- Detect Start-Hollow.ps1 by command or content
(SrcProcCmdScript ContainsCIS "Start-Hollow" AND SrcProcCmdScript ContainsCIS "[Hollow]::NtQueryInformationProcess") OR TgtProcCmdLine ContainsCIS "Start-Hollow"
```
### T1055 Process Injection
Atomics: [T1055](https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1055/T1055.md)
Detects Process Injection through execution of MavInject, filtering out noisy/expected activity. `SrcProcParentName` filter narrows Cross Process items to HQ results.
```
(TgtProcName = "mavinject.exe" AND TgtProcCmdLine ContainsCIS "/injectrunning") AND (SrcProcName Not In ("AppVClient.exe") AND SrcProcParentName Not In ("smss.exe"))
```
### T1546.002 Screensaver
Atomics: [T1546.002]()
### T1547.005 Security Support Provider
Atomics: [T1547.005]()
### T1547.009 Shortcut Modification
Atomics: [T1547.009]()
### T1546.003 Windows Management Instrumentation Event Subscription
Atomics: [T1546.003]()
### T1543.003 Windows Service
Atomics: [T1543.003]()
### T1547.004 Winlogon Helper DLL
Atomics: [T1547.004]()
## Defense Evasion
### T1055.004 Asynchronous Procedure Call
Atomics: [T1055.004]()