diff --git a/Enumeration/Windows/Powershell.md b/Enumeration/Windows/Powershell.md
index cf3af1b..77b6e4b 100644
--- a/Enumeration/Windows/Powershell.md
+++ b/Enumeration/Windows/Powershell.md
@@ -314,3 +314,13 @@ Get-ADGroup
 Get-ADGroupMember
 Get-ADPrincipalGroupMembership
 ```
+
+### Services
+
+List services that are running or stopped but always started automatically
+after reboot in the following way.
+
+```sh
+Get-Service | Where-Object {$_.State -eq "Running" -and $_.StartType -eq "Automatic"}
+Get-Service | Where-Object {$_.State -eq "Stopped" -and $_.StartType -eq "Automatic"}
+```
diff --git a/Forensics/Windows Event Logs.md b/Forensics/Windows Event Logs.md
index 9879cb7..7d2653a 100644
--- a/Forensics/Windows Event Logs.md	
+++ b/Forensics/Windows Event Logs.md	
@@ -9,6 +9,17 @@ evtx_dump $EVENT_LOG > event.log
 evtx_dump -o json $EVENT_LOG > event.log
 ```
 
+## Query Windows Events
+
+One method is to use the GUI Tool `Event Viewer`, another method is to use Powershell.
+
+Use `Win-Event` to filter categories like Security or System (same categories
+like in `Event Viewer`) and Event IDs throught the following line.
+
+```sh
+Get-WinEvent -FilterHashTable @{LogName='<Category>';ID='<Event IDs>'} | fl
+```
+
 ## Event IDs
 
 ### Process
@@ -46,8 +57,13 @@ evtx_dump -o json $EVENT_LOG > event.log
 * **4702**: Scheduled task updated
 * **4699**: Scheduled task deletion
 
+### System
+
+* **7045**: Service installation
+
 ### Security
 
 * **1100**: Logging service disabled
 * **1102**: Log deletion
 * **1116**: Malware detection
+* **4697**: Service installation (subsection of **7045**)
diff --git a/Forensics/Windows Task Scheduler.md b/Forensics/Windows Task Scheduler.md
new file mode 100644
index 0000000..a43f303
--- /dev/null
+++ b/Forensics/Windows Task Scheduler.md	
@@ -0,0 +1,31 @@
+# Windows Task Scheduler
+
+## Files & Paths
+
+By default, scheduled tasks are saved inside `C:\Windows\System32\Tasks\`
+
+## Use Task Scheduler
+
+There is a `Task Scheduler` GUI application, which uses the XML files inside
+the (default) path mentioned above to display information about the scheduled
+tasks.
+
+**Malicious Findings**: Compare mismatches between modification dates of the
+XML files and the displayed values inside the GUI app
+
+There is also a Powershell Command-Let which works with the tasks.
+
+List enabled, scheduled tasks via Get-ScheduledTask or use `schtasks.exe` to
+get CSV output in the following way.
+
+```sh
+Get-ScheduledTask | Where-Object {$_.State -ne "Disabled"}
+schtasks.exe /query /fo CSV | findstr /V Disabled
+```
+
+List scheduled tasks by creation date through `Get-ScheduledTask` in the
+following way.
+
+```sh
+Get-ScheduledTask | Where-Object {$_.Date -ne $null -and $_.State -ne "Disabled"} | Sort-Object Date | Select Date,TaskName,Author,State,TaskPath | ft
+```