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possible_system_time_discovery_sysmonwindows_logs

The system time is set and stored by the Windows Time Service within a domain to maintain time synchronization between systems and services in an enterprise network. (use for Letheral Movement via task scheduler) License: https://github.com/Neo23x0/sigma/blob/master/LICENSE.Detection.Rules.md.

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Detection Logic

rule possible_system_time_discovery_sysmonwindows_logs {
 meta:
    author = "Roman Ranskyi"
    description = "The system time is set and stored by the Windows Time Service within a domain to maintain time synchronization between systems and services in an enterprise network. (use for Letheral Movement via task scheduler)  License: https://github.com/Neo23x0/sigma/blob/master/LICENSE.Detection.Rules.md."
    reference = "https://tdm.socprime.com/tdm/info/B45YWxGdDpdW"
    version = "0.01"
    created = "2021-03-09"
    product = "windows"
    service = "security"
    mitre = "Discovery, t1124, Execution, t1059"

  events:
(($selection0.target.process.command_line = "net time" or $selection0.target.process.command_line = "net1 time" or $selection0.target.process.command_line = "Get-Date") or ($selection0.target.process.file.full_path = "net.exe" or $selection0.target.process.file.full_path = "net1.exe" or $selection0.target.process.file.full_path = "w32tm.exe"))

  condition:
    $selection0
}

Field Validations

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