Potential JLI.dll Side-Loading

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About the rule

Rule Type

Standard

Rule Description

Detects potential DLL side-loading of jli.dll. JLI.dll has been observed being side-loaded by Java processes by threat actors such as APT41 and XWorm to load malicious payloads under legitimate Java context.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Image Loaded" AND (OBJECTNAME endswith "\jli.dll" AND OBJECTNAME notcontains "\Program Files\,Program Files (x86)" AND PRODUCT_NAME notstartswith "OpenJDK Platform" AND OBJECTNAME notcontains "\eclipse\plugins") select Action1.HOSTNAME,Action1.MESSAGE,Action1.PROCESSNAME,Action1.PRODUCT_NAME,Action1.OBJECTNAME,Action1.SIGNATURE,Action1.SIGNATURESTATUS

Detection

Execution Mode

realtime

Log Sources

Windows

Author

@Swachchhanda Shrawan Poudel (Nextron Systems)