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Sysmon

Sysmon gathers detailed and high-quality logs as well as event tracing that assists in identifying anomalies in your environment. Sysmon is most commonly used in conjunction with security information and event management (SIEM) system or other log parsing solutions that aggregate, filter, and visualize events.

Paths

Logfiles

Applications and Services Logs/Microsoft/Windows/Sysmon/Operational

Configuration

Installation

Downloads-SysInternalsTools C:\Sysinternals

Best Practices

Exclude, not include events
CLI gives further control over filters

Get-WinEvent

wevutil.exe

Know the env before implementation

Filtering Events

Actions -> Filter Current Log

Filtering Events with Powershell

Logged Events containing port 4444

Get-WinEvent -Path <Path to Log> -FilterXPath '*/System/EventID=3 and */EventData/Data[@Name="DestinationPort"] and */EventData/Data=4444'

Logged Events containing lsass.exe

Get-WinEvent -Path <Path to Log> -FilterXPath '*/System/EventID=10 and */EventData/Data[@Name="TargetImage"] and */EventData/Data="C:\Windows\system32\lsass.exe"'

Rats and C2

Get-WinEvent -Path <Path to Log> -FilterXPath '*/System/EventID=3 and */EventData/Data[@Name="DestinationPort"] and */EventData/Data=<Port>'

Evasion Techniques

Alternate Data Streams
Injections
Masquerading
Packing/Compression
Recompiling
Obfuscation
Anti-Reversing Techniques
Remote Thread (OpenThread, ResumeThread)

Detecting Evasion Techniques with Powershell

Get-WinEvent -Path <Path to Log> -FilterXPath '*/System/EventID=15'
Get-WinEvent -Path <Path to Log> -FilterXPath '*/System/EventID=8'

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