Suspicious PowerShell Outlook COM Automation for Mail Access via TCLBANKER
- Product
- windows
- Category
- ps_script
- Author
- HuntRule
- Published
- 2026-09-19
- Updated
- 2026-09-19
ATT&CK techniques
CollectionRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects PowerShell attaching to a running Outlook instance through the COM automation interface as used by the TCLBANKER trojan to read victim mail in Elastic research. Using GetActiveObject on the Outlook Application object allows the malware to harvest messages and monitor the inbox for banking interactions.
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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