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Version: 2.8

📁 File Access

Jibril monitors and analyzes all file access operations across a system in real-time. It maintains comprehensive visibility into every interaction between applications and the filesystem, tracking which processes access which files, what operations they perform, and under what context these actions occur.

📊 Complete Filesystem Audit Trail

Every file operation is captured and stored, creating a long-tail of information for sophisticated threat detection. From credential theft to data exfiltration, file access patterns reveal malicious intent.

⚙️ How File Access Monitoring Works​

📂 Comprehensive Operation Tracking​

Jibril intercepts and logs every file operation in the system, including opens, reads, writes, modifications, deletions, and permission changes. For each operation, it records:

  • The exact file path and name
  • Timestamp of the access
  • Process ID and name that performed the operation
  • User context under which the access occurred
  • Type of operation performed
  • Amount of data read or written

📜 Long-tail Information Collection​

Rather than sampling or filtering events, Jibril constructs a complete historical record of all file interactions. This "long tail" of information allows for:

  • Temporal analysis of access patterns over time
  • Correlation between seemingly unrelated file operations
  • Detection of slow-moving or distributed attacks
  • Complete forensic reconstruction

🎯 Contextual Analysis Engine​

Jibril analyzes file access patterns within their full operational context by:

  • Comparing current access patterns against historical baselines
  • Evaluating the legitimacy of access based on process lineage and behavior
  • Correlating file operations with other system activities like network connections or process creations
  • Identifying anomalous access patterns that deviate from normal behavior

⚡ eBPF-powered Implementation​

Using eBPF technology, Jibril attaches to kernel functions responsible for file operations, allowing it to:

  • Monitor file access with minimal performance impact
  • Operate without modifying the kernel or requiring special modules
  • Maintain visibility even into privileged processes
  • Store data efficiently in kernel space

📍 Where File Access Monitoring Operates​

Jibril's file access monitoring capabilities operate at multiple levels within the system:

🔧 Kernel Space​

eBPF hooks intercept file-related syscalls directly in the kernel

🗄️ VFS Layer​

Monitoring at the Virtual File System layer provides visibility across all filesystem types

📝 Filesystem Operations​

Detailed tracking of specific operations within each filesystem type

🌐 System-wide Coverage​

All file operations across the entire system are captured, regardless of which user or process initiated them

✨ Why File Access Monitoring Is Important​

🛡️ Comprehensive Attack Coverage​

Many attack vectors involve file operations at some point-malware must read or write files, data exfiltration requires accessing sensitive information, and persistence mechanisms often modify system files.

🚨 Data Breach Detection​

By tracking every file access, Jibril can identify unauthorized access to sensitive files, even if the access appears legitimate at first glance.

🔬 Advanced Threat Detection​

The long-tail approach to information collection enables detection of sophisticated attacks that might only become apparent when analyzing patterns over extended periods.

🔍 Forensic Investigation​

The detailed historical record of all file operations provides invaluable evidence for incident response, allowing security teams to reconstruct exactly what happened during a breach.

🚀 Next Steps​