Detection rules › Sigma
Potential Process Injection Via Msra.EXE
Detects potential process injection via Microsoft Remote Asssistance (Msra.exe) by looking at suspicious child processes spawned from the aforementioned process. It has been a target used by many threat actors and used for discovery and persistence tactics
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Privilege Escalation | T1055 Process Injection |
| Defense Evasion | T1055 Process Injection |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
Stages and Predicates
Stage 1: selection
or:
Image|endswith: '\arp.exe'
Image|endswith: '\cmd.exe'
Image|endswith: '\net.exe'
Image|endswith: '\netstat.exe'
Image|endswith: '\nslookup.exe'
Image|endswith: '\route.exe'
Image|endswith: '\schtasks.exe'
Image|endswith: '\whoami.exe'
ParentCommandLine|endswith: msra.exe
ParentImage|endswith: '\msra.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 |
|
ParentCommandLine | ends_with |
|
ParentImage | ends_with |
|