Techniques
Sample rules
Windows Process Injection With Public Source Path
- source: splunk
- technicques:
- T1055.002
Description
The following analytic detects a process from a non-standard file path on Windows attempting to create a remote thread in another process. This is identified using Sysmon EventCode 8, focusing on processes not originating from typical system directories. This behavior is significant as it often indicates process injection, a technique used by adversaries to evade detection or escalate privileges. If confirmed malicious, this activity could allow an attacker to execute arbitrary code within another process, potentially leading to unauthorized actions and further compromise of the system.
Detection logic
`sysmon` EventCode=8 TargetImage = "*.exe" AND NOT(SourceImage IN("C:\\Windows\\*", "C:\\Program File*", "%systemroot%\\*"))
| stats count min(_time) as firstTime max(_time) as lastTime by EventID Guid NewThreadId ProcessID SecurityID SourceImage SourceProcessGuid SourceProcessId StartAddress StartFunction StartModule TargetImage TargetProcessGuid TargetProcessId UserID dest parent_process_exec parent_process_guid parent_process_id parent_process_name parent_process_path process_exec process_guid process_id process_name process_path signature signature_id user_id vendor_product
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `windows_process_injection_with_public_source_path_filter`