This detection identifies the execution of the APatchGUIv11 application via a specific YARA signature, which may indicate legitimate patch management activity or potential adversary use of known software for lateral movement and persistence. SOC teams should proactively hunt for this behavior in Azure Sentinel to validate that these executions align with expected administrative schedules and to quickly distinguish routine maintenance from anomalous usage patterns that could signal early-stage compromise.
rule APatchGUIv11
{
meta:
author="malware-lu"
strings:
$a0 = { 52 31 C0 E8 FF FF FF FF }
condition:
$a0 at pe.entry_point
}
This YARA rule can be deployed in the following contexts:
This rule contains 1 string patterns in its detection logic.
Here are 5 specific false positive scenarios for the APatchGUIv11 detection rule, along with targeted filters and exclusions:
Scenario: Scheduled Antivirus Console Updates
APatchGUIv11.exe to refresh policy definitions and patch status dashboards on the admin workstation.falcon.sys, ssd.exe (SentinelOne), or ccSvcHst.exe (Symantec) launching APatchGUIv11.exe.Scenario: IT Admin Manual Patch Deployment
APatchGUIv11) is instantiated to visualize the rollout progress and generate compliance reports for the “Server Patching” group.DOMAIN\IT-Admins, DOMAIN\Patch-Team). If the process is initiated by these user groups during business hours (08:00–18:00), suppress the alert.Scenario: Automated Compliance Reporting Job
APatchGUIv11 in headless mode to export XML/CSV reports to the central SIEM repository for audit purposes.