Detection rules › Splunk
Windows AppX Deployment Package Installation Success
This analytic detects successful MSIX/AppX package installations on Windows systems by monitoring EventID 854 in the Microsoft-Windows-AppXDeployment-Server/Operational log. This event is generated when an MSIX/AppX package has been successfully installed on a system. While most package installations are legitimate, monitoring these events can help identify unauthorized or suspicious package installations, especially when correlated with other events such as unsigned package installations (EventID 603 with Flags=8388608) or full trust package installations (EventID 400 with HasFullTrust=true).
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | T1204.002 User Execution: Malicious File |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| AppXDeployment-Server | 854 | Successfully added the following uri(s) to be processed: Path. |
Stages and Predicates
Stage 1: search
search EventCode=854
Stage 2: stats
stats BY dvc, EventCode, user_id
Stage 3: rename
rename
Stage 4: search
search
Stage 5: search
search
Stage 6: search
search `macro`
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 |
|---|---|---|
EventCode | eq |
|
Neighbors
Broader alternatives (more inclusive than this rule)
These rules match a superset of what this rule catches. They cover the same events plus more. Use them if you want wider coverage and can absorb more false positives.
- AppX Located in Known Staging Directory Added to Deployment Pipeline (drops 1 filter this rule applies)
- AppX Located in Uncommon Directory Added to Deployment Pipeline (drops 1 filter this rule applies)