Data from Local System T1005
Tactic: Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
Events covered
18 catalog events are tagged with this technique by at least one rule.
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 1 | Process creation |
| Sysmon | Event ID 3 | Network connection |
| Sysmon | Event ID 11 | FileCreate |
| Sysmon | Event ID 17 | PipeEvent (Pipe Created) |
| Sysmon | Event ID 18 | PipeEvent (Pipe Connected) |
| Security-Auditing | Event ID 4656 | A handle to an object was requested. |
| Security-Auditing | Event ID 4662 | An operation was performed on an object. |
| Security-Auditing | Event ID 4663 | An attempt was made to access an object. |
| Security-Auditing | Event ID 4688 | A new process has been created. |
| Security-Auditing | Event ID 5156 | The Windows Filtering Platform has permitted a connection. |
| Defender-DeviceEvents | AmsiScriptContent | AMSI script content captured |
| ESF | open | File Open (NOTIFY) |
| ESF | create | File or Directory Create (NOTIFY) |
| ESF | write | File Write (NOTIFY) |
| PowerShell | Event ID 4103 | Payload Context: ContextInfo User Data: UserData. |
| PowerShell | Event ID 4104 | Creating Scriptblock text (MessageNumber of MessageTotal). |
| Sysmon-for-Linux | Event ID 1 | Process Create |
| Windows-Error-Reporting | Event ID 1001 | Fault bucket , type. |
Authoring guide
Patterns shared across the 70 rules above: which fields they filter on, what specific values they look for, and what they exclude. The catalog normalizes field names across vendors so Sigma's Image, Elastic's process.name, and Splunk's process_name collapse into one row. Each rule contributes at most once per row.
Fields filtered most (82 distinct)
The fields most rules look at when detecting this technique. The How column shows the operators authors use (eq, wildcard, regex_match, match) and how often each appears. Sample values are concrete examples to start from, not an exhaustive list.
Top indicator values (648 distinct)
Specific (field, operator, value) combinations the rules check for, ranked by how many rules under this technique use each one. The Corpus reach column counts how many rules across the entire catalog (any technique) check the same combination. High numbers point to widely-used indicators that are likely noisy on their own; combine them with another condition for useful signal. Blank means the combination is specific to rules under this technique. Click a value to expand the rules under this technique that use it.
Exclusions (140 distinct)
Field/operator/value combinations excluded by rules under this technique (top-level not() clauses), sorted by how many rules exclude each. These are the false-positive paths the community has learned to filter out. A new rule that ignores the high-count entries here will likely fire on the same noisy paths. Click a value to expand the rules under this technique that exclude it.
Rules under this technique
Every rule in the catalog tagged with this technique, grouped by vendor. Click a rule title for its full predicates, exclusions, and indicators.
Sigma 14 rules
- ADFS Database Named Pipe Connection By Uncommon Tool
- AWS EC2 VM Export Failure
- Cisco Collect Data
- Crash Dump Created By Operating System
- Esentutl Steals Browser Information
- OpenCanary - SMB File Open Request
- Potential Conti Ransomware Database Dumping Activity Via SQLCmd
- Script Interpreter Spawning Credential Scanner - Linux
- Script Interpreter Spawning Credential Scanner - Windows
- Shai-Hulud NPM Package Malicious Exfiltration via Curl
- SQLite Chromium Profile Data DB Access
- SQLite Firefox Profile Data DB Access
- Veeam Backup Database Suspicious Query
- VeeamBackup Database Credentials Dump Via Sqlcmd.EXE
Elastic 32 rules
- Accessing Outlook Data Files
- Attempted Private Key Access
- AWS Credentials Searched For Inside A Container
- AWS EC2 Export Task
- Credential Access via TruffleHog Execution
- Encrypting Files with WinRar or 7z
- Exchange Mailbox Export via PowerShell
- Exporting Exchange Mailbox via PowerShell
- GenAI Process Accessing Sensitive Files
- Kernel Seeking Activity
- Kubernetes Service Account Secret Access
- Linux init (PID 1) Secret Dump via GDB
- M365 Purview DLP Signal
- Manual Memory Dumping via Proc Filesystem
- Potential Data Exfiltration Through Wget
- Potential Linux Credential Dumping via Unshadow
- Potential Memory Seeking Activity
- Potential Privacy Control Bypass via Localhost Secure Copy
- Potential Suspicious DebugFS Root Device Access
- Sensitive File Access followed by Compression
- Sensitive File Compression Detected via Defend for Containers
- Sensitive Files Compression
- Sensitive Files Compression Inside A Container
- Sensitive Keys Or Passwords Search Detected via Defend for Containers
- Service Account Namespace Read Detected via Defend for Containers
- Service Account Token or Certificate Read Detected via Defend for Containers
- Suspicious TCC Access Granted for User Folders
- Suspicious Web Browser Sensitive File Access
- SystemKey Access via Command Line
- TCC Bypass via Mounted APFS Snapshot Access
- Unusual Web Config File Access
- Web Server Local File Inclusion Activity
Splunk 10 rules
- Cisco ASA - Device File Copy Activity
- Cisco ASA - Device File Copy to Remote Location
- Cisco TFTP Server Configuration for Data Exfiltration
- Esentutl.exe Collecting Browser Data (Sysmon)
- ESXi Sensitive Files Accessed
- ESXi VM Exported via Remote Tool
- Sqlite Module In Temp Folder
- Windows Copy Files (PowerShell)
- Windows Copy Files (Sysmon)
- Windows Copy Files (Windows Event Log)
Kusto 10 rules
- AD FS Remote Auth Sync Connection
- AD FS Remote HTTP Network Connection
- ADFS Database Named Pipe Connection
- ADFS DKM Master Key Export
- Deimos Component Execution
- Microsoft Entra ID Health Monitoring Agent Registry Keys Access
- Microsoft Entra ID Health Service Agents Registry Keys Access
- OracleDBAudit - Query on Sensitive Table
- SailPointIdentityNowAlertForTriggers
- SonicWall - Allowed SSH, Telnet, and RDP Connections
YARA-L 2 rules
- sap sensitive tables direct access by rfc logon data table
- sap sensitive tables direct access by rfc logon static list