ibanking

Hunt Hypothesis

The ibanking rule detects potential credential theft or unauthorized access attempts by identifying suspicious file artifacts associated with banking-related activities. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate early-stage adversary activity that could lead to data exfiltration or lateral movement.

YARA Rule

rule ibanking: amtrckr
{
	meta:
		family = "ibanking"

	condition:
		androguard.url(/www\.irmihan\.ir/) or 
		androguard.url(/emberaer\.com/)
}

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 scheduled job for backup or data synchronization using Veeam Backup & Replication
  Filter/Exclusion: Check for presence of veeam in the process name or command line, or filter by user account associated with the backup service.

• Scenario: Administrative task involving Microsoft Exchange Online PowerShell for mailbox management or migration
  Filter/Exclusion: Filter by user account with ExchangeAdmin or MailboxManagement privileges, or check for presence of ExchangeOnlineManagement module in the command line.

• Scenario: Routine system update or patching using Windows Server Update Services (WSUS)
  Filter/Exclusion: Filter by process name wuauclt.exe or check for presence of wsus in the command line, or correlate with known patching schedules.

• Scenario: Use of PowerShell scripts for automated reporting or compliance checks by internal IT teams
  Filter/Exclusion: Filter by user account with ITAdmin or Compliance role, or check for presence of PowerShell in the command line with known script paths.

• Scenario: Legitimate use of Ansible for configuration management or deployment tasks
  Filter/Exclusion: Filter by presence of ansible in the process name or command line, or check for known Ansible inventory files and playbooks.