Rules: Multiple File Extensions
Observes for common file extensions appearing before the actual file extension (ex. totallynotmalware.pdf.exe)
| Detail | Value |
|---|---|
| Type | Templated Match |
| Category | Defense Evasion |
| Apply Risk to Entities | device_hostname, device_ip, user_username |
| Signal Name | Multiple File Extensions |
| Summary Expression | File: {{baseImage}} found with multiple extensions on host: {{device_hostname}} |
| Score/Severity | Static: 2 |
| Enabled by Default | True |
| Prototype | False |
| Tags | _mitreAttackTactic:TA0005, _mitreAttackTechnique:T1036, _mitreAttackTechnique:T1036.007 |
- Bitdefender - GravityZone
- Carbon Black - Cloud
- Cisco Systems - Advanced Malware Protection (AMP)
- CrowdStrike - FDR
- Fortinet - Fortigate
- Microsoft - Azure
- Microsoft - Office 365
- Microsoft - Windows
- VMware - Carbon Black Cloud
| Origin | Field |
|---|---|
| Normalized Schema | baseImage |
| Normalized Schema | device_hostname |
| Normalized Schema | device_ip |
| Normalized Schema | user_username |