Displays Windows Event Logs in a GUI window.
eventvwr.exe
During startup, eventvwr.exe checks the registry value HKCU\Software\Classes\mscfile\shell\open\command for the location of mmc.exe, which is used to open the eventvwr.msc saved console file. If the location of another binary or script is added to this registry value, it will be executed as a high-integrity process without a UAC prompt being displayed to the user.
Execute a binary or script as a high-integrity process without a UAC prompt.
C:\Windows\System32\eventvwr.exe, C:\Windows\SysWOW64\eventvwr.exe
Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/process_creation/proc_creation_win_uac_bypass_eventvwr.yml, Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/registry/registry_set/registry_set_uac_bypass_eventvwr.yml, Sigma: https://github.com/SigmaHQ/sigma/blob/197615345b927682ab7ad7fa3c5f5bb2ed911eed/rules/windows/file/file_event/file_event_win_uac_bypass_eventvwr.yml, Elastic: https://github.com/elastic/detection-rules/blob/d31ea6253ea40789b1fc49ade79b7ec92154d12a/rules/windows/privilege_escalation_uac_bypass_event_viewer.toml, Splunk: https://github.com/splunk/security_content/blob/86a5b644a44240f01274c8b74d19a435c7dae66e/detections/endpoint/eventvwr_uac_bypass.yml, IOC: eventvwr.exe launching child process other than mmc.exe, IOC: Creation or modification of the registry value HKCU\Software\Classes\mscfile\shell\open\command
Matt Nelson (@enigma0x3), Matt Graeber (@mattifestation), Orange Tsai (@orange_8361)