Detection rules › Sigma
DCOM InternetExplorer.Application Iertutil DLL Hijack - Security
Detects a threat actor creating a file named iertutil.dll in the C:\Program Files\Internet Explorer\ directory over the network for a DCOM InternetExplorer DLL Hijack scenario.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Lateral Movement | T1021.002 Remote Services: SMB/Windows Admin Shares, T1021.003 Remote Services: Distributed Component Object Model |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Security-Auditing | 5145 | A network share object was checked to see whether client can be granted desired access. |
Stages and Predicates
Stage 1: selection
RelativeTargetName|endswith: '\Internet Explorer\iertutil.dll'
Stage 2: not filter
SubjectUserName|endswith: '$'
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 |
|---|---|---|
RelativeTargetName | ends_with |
|
SubjectUserName | ends_with |
|
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.
- Transferring Files with Credential Data via Network Shares (drops 1 filter this rule applies)