Detection rules › Sigma
Suspicious GUP Usage
Detects execution of the Notepad++ updater in a suspicious directory, which is often used in DLL side-loading attacks
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 | 1 | Process creation |
| Security-Auditing | 4688 | A new process has been created. |
Stages and Predicates
Stage 1: selection
Image|endswith: '\GUP.exe'
Stage 2: not 1 of filter_*
or:
or:
Image|endswith: '\AppData\Local\Notepad++\updater\GUP.exe'
Image|endswith: '\AppData\Roaming\Notepad++\updater\GUP.exe'
Image|contains: '\Users\'
Image|endswith: '\Program Files (x86)\Notepad++\updater\GUP.exe'
Image|endswith: '\Program Files\Notepad++\updater\GUP.exe'
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 |
|---|---|---|
Image | ends_with |
|
Image | match |
|