Let's run some of the popular enumeration commands on the victim system:
attacker@victimnet usernet user administratorwhoami /userwhoami /all...
Having command line logging can help in identifying a cluster of enumeration commands executed in a relatively short span of time on a compromised host .
For this lab, I exported 8600+ command lines from various processes and wrote a dirty powershell script that ingests those command lines and inspects them for a couple of classic windows enumeration commands that are executed in the span of 2 minutes and spits them out:
hunt.ps1function hunt() {[CmdletBinding()]Param()$commandlines = Import-Csv C:\Users\mantvydas\Downloads\cmd-test.csv$watch = 'whoami|net1 user|hostname|netstat|net localgroup|cmd /c'$matchedCommandlines = $commandlines| where-object { $_."event_data.CommandLine" -match $watch}​$matchedCommandlines| foreach-Object {[datetime]$eventTime = $_."@timestamp"[datetime]$low = $eventTime.AddSeconds(-60)[datetime]$high = $eventTime.AddSeconds(60)$clusteredCommandlines = $commandlines | Where-Object { [datetime]$_."@timestamp" -ge $low -and [datetime]$_."@timestamp" -le $high -and $_."event_data.CommandLine" -match $watch}if ($clusteredCommandlines.length -ge 4) {Write-Verbose "Possible enumeration around time: $low - $high ($eventTime)"$clusteredCommandlines}}}
Invoking the script to start the hunt:
. \hunt.ps1; hunt -verbose
Below are some of the findings which may warrant further investigation of the suspect host: