Malicious ScreenConnect Client Installation via Msiexec (via process_creation)
- Product
- windows
- Category
- process_creation
- Author
- HuntRule
- Published
- 2026-09-19
- Updated
- 2026-09-19
ATT&CK techniques
Defense Evasion → C2Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
Exfiltration
Impact
What it detects
This rule detects silent installation of the ScreenConnect client setup MSI, abused in the SILENTCONNECT campaign to deploy remote access tooling. Observed in Elastic Security Labs telemetry where msiexec installs ScreenConnect.ClientSetup.msi to give the adversary persistent hands-on-keyboard control.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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