# T1659 - Content Injection

## SOC Recommendation
Investigate Content Injection activity in the context of Initial Access/Command and Control: confirm scope, affected host/identity, and whether it matches expected administrative behaviour before deciding this is benign.

## D3FEND Mappings
| D3FEND Technique | Relationship | Practical SOC Action |
|---|---|---|
| Network Traffic Analysis | Detect | Monitor for Network Traffic Analysis indicators relevant to this technique. |

## Investigation Steps
1. Review Defender for Endpoint / Defender XDR alerts and timeline for the affected host or identity.
2. Check Sentinel analytics rules and incidents correlated with this technique.
3. Review Entra ID sign-in and audit logs if the technique involves an identity or cloud resource.

## Evidence to Collect
- Host or resource affected
- Account or identity involved
- Timestamp of the activity
- Related process, file, or network artifact
- Any preceding or follow-on alerts

## Response Actions
| Action | Risk | Automation Safe | Approval Required |
|---|---|---|---|
| Contain the affected host or account | Medium | No | Yes |
| Collect and preserve evidence | Low | Yes | No |

## KQL
```kql
DynatraceSecurityProblems
| where VulnerabilityType == "CODE_LEVEL" and DAVISRiskLevel == "CRITICAL" and Muted == false
| summarize  arg_max(LastUpdatedTimeStamp, *) by SecurityProblemId
```
```kql
DynatraceSecurityProblems
| where VulnerabilityType != "CODE_LEVEL" and DAVISRiskLevel == "CRITICAL"  and Muted == false
| summarize  arg_max(LastUpdatedTimeStamp, *) by SecurityProblemId
```
```kql
DynatraceSecurityProblems
| where DAVISRiskLevel != "CRITICAL"  and Muted == false
| summarize  arg_max(LastUpdatedTimeStamp, *) by SecurityProblemId
```

## Escalation Criteria
- Content Injection activity observed on a privileged account or critical system.
- Activity follows or precedes other suspicious behaviour in the same investigation.
- Automated triage cannot confidently rule out malicious intent.

## False Positive Considerations
- Legitimate administrative or maintenance activity matching this pattern.
- Approved security testing or red team exercise.
- Known benign software producing similar telemetry.

Generated by SOC Response Atlas by Basyrix.