Detection rules › Sigma
Potential Persistence Via Netsh Helper DLL
Detects the execution of netsh with "add helper" flag in order to add a custom helper DLL. This technique can be abused to add a malicious helper DLL that can be used as a persistence proxy that gets called when netsh.exe is executed.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1546.007 Event Triggered Execution: Netsh Helper DLL |
| Privilege Escalation | T1546.007 Event Triggered Execution: Netsh Helper DLL |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
Stages and Predicates
Stage 1: all of selection_img
or:
Image|endswith: '\netsh.exe'
OriginalFileName: netsh.exe
Stage 2: all of selection_cli
CommandLine|contains: add
CommandLine|contains: helper
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 |
|---|---|---|
CommandLine | match |
|
Image | ends_with |
|
OriginalFileName | eq |
|