Detection rules › Sigma
Portable Gpg.EXE Execution
Detects the execution of "gpg.exe" from uncommon location. Often used by ransomware and loaders to decrypt/encrypt data.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Impact | T1486 Data Encrypted for Impact |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
Stages and Predicates
Stage 1: selection
or:
Description: 'GnuPG’s OpenPGP tool'
Image|endswith: '\gpg.exe'
Image|endswith: '\gpg2.exe'
OriginalFileName: gpg.exe
Stage 2: not 1 of filter_main_legit_location
or:
Image|contains: ':\Program Files (x86)\GNU\GnuPG\bin\'
Image|contains: ':\Program Files (x86)\GnuPG VS-Desktop\'
Image|contains: ':\Program Files (x86)\GnuPG\bin\'
Image|contains: ':\Program Files (x86)\Gpg4win\bin\'
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 |
|---|---|---|
Description | eq |
|
Image | ends_with |
|
Image | match |
|
OriginalFileName | eq |
|