Detection rules › Sigma
Uncommon Extension Shim Database Installation Via Sdbinst.EXE
Detects installation of a potentially suspicious new shim with an uncommon extension using sdbinst.exe. Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by application shims
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1546.011 Event Triggered Execution: Application Shimming |
| Privilege Escalation | T1546.011 Event Triggered Execution: Application Shimming |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
Stages and Predicates
Stage 1: selection
or:
Image|endswith: '\sdbinst.exe'
OriginalFileName: sdbinst.exe
Stage 2: not 1 of filter_main_*
or:
CommandLine|endswith: ' -c'
CommandLine|endswith: ' -f'
CommandLine|endswith: ' -mm'
CommandLine|endswith: ' -t'
CommandLine: ''
CommandLine: null
CommandLine|contains: ' -m -bg'
CommandLine|contains: .sdb
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 | ends_with |
|
CommandLine | match |
|
Image | ends_with |
|
OriginalFileName | eq |
|