DET0433: Detecting Code Injection via mavinject.exe (App-V Injector)
DET0433 is a detection strategy for spotting abuse of mavinject.exe, the Microsoft App-V Injector, which ATT&CK relates to Mavinject technique T1218.013. T...
Analyst context for executives and security teams
DET0433 is a detection strategy for spotting abuse of mavinject.exe, the Microsoft App-V Injector, which ATT&CK relates to Mavinject technique T1218.013. The business significance is that a legitimate Windows utility can be used to inject code into another running process, making malicious activity harder to distinguish from normal administrative or application virtualization behavior.
Executive priority
Treat this as a control-validation item for Windows environments where App-V or mavinject.exe may exist. Leaders should ask whether the organization can explain legitimate use of mavinject.exe, collect enough endpoint telemetry to review process injection behavior, and produce evidence for incident response or audit that abuse of trusted Windows utilities is monitored. Priority is higher where stealthy execution paths materially affect SOC readiness or business-critical Windows systems.
Technical view
SOC and detection teams should validate visibility around mavinject.exe execution and its relationship to target processes and DLL loading. Because the ATT&CK object has no official detection text and no platform field of its own, tuning should be anchored to the related technique T1218.013, which is Windows-focused and describes abuse of mavinject.exe for DLL injection into running processes. Useful validation includes whether mavinject.exe executions are rare, expected, tied to approved App-V activity, or associated with unusual parent processes, command-line context, target processes, or injected DLL paths.
Likely telemetry
- Endpoint process creation events for mavinject.exe
- Process command-line and parent process context
- DLL/module load telemetry for target processes
- Process access or injection-related endpoint telemetry where available
- File path and signer metadata for DLLs involved in suspicious activity
Detection direction
- Baseline legitimate mavinject.exe use before alerting aggressively, especially where Microsoft App-V is deployed.
- Prioritize unusual parent processes, unexpected users, uncommon hosts, suspicious DLL locations, or mavinject.exe activity outside known App-V workflows.
- Correlate mavinject.exe execution with target process behavior and subsequent DLL/module loads rather than relying on filename alone.
- Review false positives from legitimate application virtualization operations and administrative tooling.
- Identify blind spots where endpoint telemetry records process starts but not module loads, process access, or injection-related activity.
Mitigation priorities
- Inventory whether App-V and mavinject.exe are required in the environment.
- Where not required, consider restricting execution through approved software control mechanisms.
- Where required, document approved use cases and expected hosts, users, and workflows.
- Apply least-privilege administration and limit who can introduce or execute unapproved DLLs.
- Ensure incident response procedures include review of trusted Windows utilities used for stealthy proxy execution.
Analyst notes and limits
The supplied ATT&CK detection strategy record is sparse: it provides the name, external reference, and relationship to T1218.013 Mavinject, but no official description or detection logic. The practical defensive value comes from validating whether mavinject.exe activity can be observed and distinguished from legitimate App-V behavior in the local environment.
This take does not assert active exploitation, attribution, or existing detection coverage. Platform and tactic context are derived from the related ATT&CK technique, not from platform or tactic fields on the detection-strategy object itself. Local telemetry, App-V usage, and endpoint control data are required to determine priority and detection quality.
Detecting Code Injection via mavinject.exe (App-V Injector)
No official description is available in the imported ATT&CK source object.
How security teams should use this page
Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.
Techniques used
This mirrors the MITRE pattern of making group, software, campaign, and technique relationships scannable. Relationship notes come from mirrored ATT&CK relationship text when available.
All related ATT&CK context
Object version and sync metadata
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Imported snapshots across ATT&CK releases (1)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.1 | 1.0 | Current bundle | 415c78141ccd… |
Mirrored ATT&CK source object
The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.
External references and citations
MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.
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mitre-attack DET0433Open source URL
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