Detection rules › Sigma
AppX Package Installation Attempts Via AppInstaller.EXE
Detects DNS queries made by "AppInstaller.EXE". The AppInstaller is the default handler for the "ms-appinstaller" URI. It attempts to load/install a package from the referenced URL
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Command & Control | T1105 Ingress Tool Transfer |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 22 | DNSEvent (DNS query) |
Stages and Predicates
Stage 1: selection
Image|endswith: '\AppInstaller.exe'
Image|startswith: 'C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_'
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 | ends_with |
|
Image | starts_with |
|