PUNiSHERV15DemoFEUERRADER

Hunt Hypothesis

This hunt hypothesis targets adversary behavior involving the execution of specific malware signatures identified by the PUNiSHERV15DemoFEUERRADER YARA rule within the Azure Sentinel environment. A proactive search is recommended to validate potential low-severity detections that may indicate early-stage reconnaissance or lateral movement, ensuring that subtle indicators are not overlooked before escalating into broader incidents.

YARA Rule

rule PUNiSHERV15DemoFEUERRADER
{
      meta:
		author="malware-lu"
strings:
		$a0 = { EB 04 83 A4 BC CE 60 EB 04 80 BC 04 11 E8 00 00 00 00 }

condition:
		$a0 at pe.entry_point
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

• Microsoft Defender for Endpoint — Custom indicators / advanced hunting
• Email Gateway — Attachment scanning
• File Share Monitoring — Periodic scanning of shared drives
• YARA CLI — Manual threat hunting on endpoints

This rule contains 1 string patterns in its detection logic.

• Source Rule

False Positive Guidance

Here are 4 specific false positive scenarios for the PUNiSHERV15DemoFEUERRADER YARA rule detection logic, tailored for a legitimate enterprise environment:

• Scenario: Automated Software Deployment by SCCM/Intune

  • Context: The System Center Configuration Manager (SCCM) or Microsoft Intune agent executes a scheduled deployment task that installs the “PUNiSHER Demo” utility on endpoint workstations during maintenance windows. The YARA rule matches the executable hash of this legitimate installer, mistaking it for an unauthorized deployment attempt.
  • Filter/Exclusion: Exclude processes where the parent process is ccmsetup.exe (SCCM) or Microsoft.IntuneManagementExtension.exe, and the file path contains \Microsoft Intune Management Extension\ or \SMS Client\.

• Scenario: Endpoint Protection Signature Updates

  • Context: The enterprise uses a third-party EDR solution (e.g., CrowdStrike Falcon or SentinelOne) that utilizes “PUNiSHER” as an internal component name for its heuristic scanning engine. During the daily signature update cycle, this component spawns a temporary worker process matching the YARA pattern.
  • Filter/Exclusion: Create an exclusion based on the file path containing \Program Files\CrowdStrike\Falcon\ or \SentinelOne\SentinelOne\, specifically filtering out events where the ImageName ends in FalconService.exe or SoneAgent.exe.

• Scenario: Legacy Application Maintenance Scripts

  • Context: A legacy ERP system (e.g., SAP NetWeaver) runs a nightly PowerShell script (UpdateDemoConfig.ps1) that invokes the PUNiSHER demo tool to validate configuration changes. This script is executed by the local SYSTEM account via Task Scheduler, triggering the rule due to the