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Updates - PSExec_PSH - SecureBoot - Office Process Creation - Zoom #177

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Updates - PSExec_PSH - SecureBoot - Office Process Creation - Zoom #177

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5b3c69f
Update include_psexec.xml
DCData-OPS Jul 14, 2023
600d9a9
Create include_windows_secureboot.xml
DCData-OPS Jul 14, 2023
23f30ef
Create include_office_process_creation.xml
DCData-OPS Jul 14, 2023
5c1dc95
Create exclude_zoom.xml
DCData-OPS Jul 14, 2023
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14 changes: 14 additions & 0 deletions 10_process_access/include_office_process_creation.xml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,14 @@
<Sysmon schemaversion="4.30">
<!-- Capture all hashes -->
<HashAlgorithms>*</HashAlgorithms>
<EventFiltering>
<RuleGroup name="" groupRelation="or">
<ProcessAccess onmatch="include">
<Rule name="Office Process Creation" groupRelation="and">
<SourceImage condition="contains all">C:\Program Files;\Microsoft Office\Root\Office</SourceImage>
<CallTrace condition="contains">C:\Windows\System32\KERNELBASE.dll+76516</CallTrace>
</Rule>
</ProcessAccess>
</RuleGroup>
</EventFiltering>
</Sysmon>
11 changes: 11 additions & 0 deletions 12_13_14_registry_event/include_windows_secureboot.xml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
<Sysmon schemaversion="4.30">
<!-- Capture all hashes -->
<HashAlgorithms>*</HashAlgorithms>
<EventFiltering>
<RuleGroup name="" groupRelation="or">
<RegistryEvent onmatch="include">
<TargetObject condition="begin with">HKLM\SYSTEM\CurrentControlSet\Control\SecureBoot\State</TargetObject>
</RegistryEvent>
</RuleGroup>
</EventFiltering>
</Sysmon>
6 changes: 5 additions & 1 deletion 17_18_pipe_event/include_psexec.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,11 @@
<RuleGroup name="" groupRelation="or">
<PipeEvent onmatch="include">
<PipeName name="technique_id=T1021.002,technique_name=SMB/Windows Admin Shares" condition="begin with">\PSEXESVC</PipeName>
<Rule name="Potential PSExec_psh Activity" groupRelation="and">
<Image name="PSExec_psh" condition="contains any">ADMIN$;C$;IPC$</Image>
<Image name="PSExec_psh" condition="contains any">.exe;.dll</Image>
</Rule>
</PipeEvent>
</RuleGroup>
</EventFiltering>
</Sysmon>
</Sysmon>
20 changes: 20 additions & 0 deletions 7_image_load/exclude_zoom.xml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
<Sysmon schemaversion="4.30">
<!-- Capture all hashes -->
<HashAlgorithms>*</HashAlgorithms>
<EventFiltering>
<RuleGroup name="" groupRelation="or">
<ImageLoad onmatch="exclude">
<Rule groupRelation="and">
<ImageLoaded condition="contains all">C:\Users\;\AppData\Roaming\Zoom\bin\;dll</ImageLoaded>
<Image condition="begin with">C:\Windows\System32\</Image>
<Company condition="contains">Zoom Video Communications</Company>
</Rule>
<Rule groupRelation="and">
<ImageLoaded condition="contains all">C:\Users\;\AppData\Roaming\Zoom\bin\;dll</ImageLoaded>
<Image condition="contains all">C:\Users\;\AppData\Roaming\Zoom\bin\;exe</Image>
<Company condition="contains">Zoom Video Communications</Company>
</Rule>
</ImageLoad>
</RuleGroup>
</EventFiltering>
</Sysmon>