Detection rules › Sigma
WinSxS Executable File Creation By Non-System Process
Detects the creation of binaries in the WinSxS folder by non-system processes
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 11 | FileCreate |
Stages and Predicates
Stage 1: selection
TargetFilename|endswith: .exe
TargetFilename|startswith: 'C:\Windows\WinSxS\'
Stage 2: not 1 of filter_main_system_location
or:
Image|startswith: 'C:\Windows\SysWOW64\'
Image|startswith: 'C:\Windows\Systems32\'
Image|startswith: 'C:\Windows\WinSxS\'
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 |
|---|---|---|
Image | starts_with |
|
TargetFilename | ends_with |
|
TargetFilename | starts_with |
|