Detection rules › Sigma
Third Party Software DLL Sideloading
Detects DLL sideloading of DLLs that are part of third party software (zoom, discord....etc)
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1574.001 Hijack Execution Flow: DLL |
| Privilege Escalation | T1574.001 Hijack Execution Flow: DLL |
| Defense Evasion | T1574.001 Hijack Execution Flow: DLL |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 7 | Image loaded |
Stages and Predicates
Stage 1: selection_lenovo
ImageLoaded|endswith: '\commfunc.dll'
Stage 2: not filter_lenovo
or:
ImageLoaded|contains: '\AppData\local\Google\Chrome\Application\'
ImageLoaded|startswith: 'C:\Program Files (x86)\Lenovo\Communications Utility\'
ImageLoaded|startswith: 'C:\Program Files\Lenovo\Communications Utility\'
Stage 3: selection_toshiba
ImageLoaded|endswith: '\tosbtkbd.dll'
Stage 4: not filter_toshiba
or:
ImageLoaded|startswith: 'C:\Program Files (x86)\Toshiba\Bluetooth Toshiba Stack\'
ImageLoaded|startswith: 'C:\Program Files\Toshiba\Bluetooth Toshiba Stack\'
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 |
|---|---|---|
ImageLoaded | ends_with |
|
ImageLoaded | match |
|
ImageLoaded | starts_with |
|