Detection rules › Sigma
Potential Rundll32 Execution With DLL Stored In ADS
Detects execution of rundll32 where the DLL being called is stored in an Alternate Data Stream (ADS).
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Defense Evasion | T1564.004 Hide Artifacts: NTFS File Attributes |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
Stages and Predicates
Stage 1: all of selection_img
or:
Image|endswith: '\rundll32.exe'
OriginalFileName: RUNDLL32.EXE
Stage 2: all of selection_cli
CommandLine|re: '[Rr][Uu][Nn][Dd][Ll][Ll]32(\.[Ee][Xx][Ee])? \S+?\w:\S+?:'
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 | regex_match |
|
Image | ends_with |
|
OriginalFileName | eq |
|