Detection rules › Sigma
Email Exifiltration Via Powershell
Detects email exfiltration via powershell cmdlets
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
| Security-Auditing | 4688 | A new process has been created. |
Stages and Predicates
Stage 1: selection
or:
Image|endswith: '\powershell.exe'
Image|endswith: '\pwsh.exe'
CommandLine|contains: -ExpandProperty
CommandLine|contains: -hidetableheaders
CommandLine|contains: Add-PSSnapin
CommandLine|contains: EmailAddresses
CommandLine|contains: Get-Recipient
CommandLine|contains: SmtpAddress
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | match |
|
Image | ends_with |
|