Using SettingSyncHost.exe as LOLBin
A Sigma rule for process creation on Windows, by Anton Kutepov, oscd.community.
high 1 ATT&CK technique
What it looks for
detection:
parent_is_settingsynchost:
ParentCommandLine|contains|all:
- 'cmd.exe /c'
- 'RoamDiag.cmd'
- '-outputpath'
system_utility:
Image|startswith:
- 'C:\Windows\System32\'
- 'C:\Windows\SysWOW64\'
condition: not system_utility and parent_is_settingsynchost
The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by Anton Kutepov, oscd.community, under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.
None of the everyday examples and documented commands on CmdID’s program pages trips it. To see whether a command line does, paste it into CmdID.
ATT&CK
T1574.008Hijack Execution Flow: Path Interception by Search Order Hijacking