Detection rules › Sigma
Files Added To An Archive Using Rar.EXE
Detects usage of "rar" to add files to an archive for potential compression. An adversary may compress data (e.g. sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Collection | T1560.001 Archive Collected Data: Archive via Utility |
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
CommandLine|contains: ' a '
Image|endswith: '\rar.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 |
|---|---|---|
CommandLine | match |
|
Image | ends_with |
|