This rule try to detect commercial spyware from Copy9

Hunt Hypothesis

The hypothesis is that the detection rule identifies potential deployment of Android_Copy9 spyware through suspicious file execution and network communication patterns. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate early-stage adversary activity associated with commercial spyware.

YARA Rule

rule Android_Copy9
{
	meta:
		author = "Jacob Soo Lead Re"
		date = "06-June-2016"
		description = "This rule try to detect commercial spyware from Copy9"
		source = "http://copy9.com/"

	condition:
		androguard.service(/com.ispyoo/i) and
        androguard.receiver(/com.ispyoo/i)
}

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
• Source Rule

False Positive Guidance

• Scenario: Legitimate System Backup Job Using Copy9
  Description: A scheduled backup job uses Copy9 to copy system files to a secure backup location.
  Filter/Exclusion: Exclude processes initiated by a known backup service (e.g., Veeam, Commvault) or jobs scheduled via crontab or Task Scheduler with a known backup pattern.

• Scenario: Admin Task to Copy Configuration Files Using Copy9
  Description: An administrator uses Copy9 to copy configuration files between servers during routine maintenance.
  Filter/Exclusion: Exclude processes initiated by a user with elevated privileges (e.g., root, admin) and associated with known administrative tools (e.g., rsync, scp, PowerShell).

• Scenario: Copy9 Used for Log File Aggregation
  Description: Copy9 is used to aggregate log files from multiple servers into a centralized logging system.
  Filter/Exclusion: Exclude processes that source from known log directories (e.g., /var/log/, C:\Windows\System32\LogFiles\) and destination to a centralized log server (e.g., Splunk, ELK stack).

• Scenario: Copy9 Used for Application Deployment
  Description: Copy9 is used to deploy application updates across multiple servers in a CI/CD pipeline.
  Filter/Exclusion: Exclude processes that match known deployment tools (e.g., Ansible, Chef, Puppet) or are initiated by a CI/CD system (e.g., Jenkins, GitLab CI).

• Scenario: Copy9 Used for Data Migration Between Servers
  Description: Copy9 is used to migrate data between on-premises and cloud servers as part of a data migration project.
  Filter/Exclusion: Exclude processes that involve known