AN0555: Analytic 0555
Identify unauthorized creation, deletion, or modification of business-critical stored data such as Office documents, database files, and log archives. Detect anomalous processes modifying stored data outside of expected workflows (e.g., non-database processes modifying database files).
Analyst context for executives and security teams
This analytic matters because unauthorized changes to business-critical stored data can affect operations, investigations, audit records, and recovery decisions. For leaders, the key question is not whether a rule named AN0555 exists, but whether the organization can reliably see unexpected creation, deletion, or modification of important Office documents, database files, and log archives on Windows systems.
Executive priority
Prioritize this as a resilience and evidence-integrity control area. Security and business owners should identify which stored data is business-critical, confirm who and what is allowed to modify it, and verify that monitoring supports incident response and compliance evidence needs. The supplied ATT&CK object does not specify a tactic or threat actor context, so prioritization should be based on local data criticality and operational dependency.
Technical view
For Windows environments, validate whether SOC and IR teams can detect anomalous processes modifying stored data outside expected workflows, such as non-database processes touching database files. Because no official detection logic is provided, teams should build environment-specific baselines around authorized applications, service accounts, file paths, file types, and maintenance windows. Detection engineering should focus on high-value repositories first: business documents, database files, and log archives.
Likely telemetry
- Windows file creation, deletion, and modification events for critical paths
- Process execution telemetry showing the process responsible for file activity
- File path, file type, user, host, parent process, and command-line context where available
- Database file access or modification records where collected
- Log archive creation, deletion, movement, or modification evidence
Detection direction
- Define and maintain an inventory of business-critical stored data locations before writing broad detection logic.
- Baseline expected processes that modify Office documents, database files, and log archives; alert on unusual process-to-file relationships.
- Tune for approved maintenance, backup, database, indexing, and archiving activity to reduce false positives.
- Pay special attention to non-database processes modifying database files, as highlighted by the ATT&CK description.
- Validate whether telemetry includes both the file action and the responsible process; file-only alerts may be difficult to triage.
Mitigation priorities
- Classify and document business-critical stored data and owners.
- Limit write/delete permissions to authorized users, services, and applications.
- Use change-control expectations to distinguish legitimate workflows from unauthorized modification.
- Ensure reliable backups and recovery procedures for critical documents, databases, and log archives.
- Protect and monitor log archives as evidence assets, not just storage objects.
Analyst notes and limits
AN0555 is a detection analytic in the enterprise ATT&CK domain for Windows. It is centered on identifying unauthorized creation, deletion, or modification of critical stored data and anomalous processes changing data outside expected workflows. No tactic, relationship context, or official detection implementation is supplied, so local asset knowledge and workflow baselining are essential.
The supplied ATT&CK fields do not provide detection logic, data source requirements, tactics, mitigations, related techniques, or threat relationships. This take therefore avoids claims about active exploitation, attribution, impact, or guaranteed coverage. Applicability beyond Windows is not supported by the supplied object.
Analytic 0555
Identify unauthorized creation, deletion, or modification of business-critical stored data such as Office documents, database files, and log archives. Detect anomalous processes modifying stored data outside of expected workflows (e.g., non-database processes modifying database files).
How security teams should use this page
Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.
All related ATT&CK context
No relationships are available in the current normalized data for this object.
Object version and sync metadata
The fields below describe the current mirrored snapshot. When Glexia retains multiple ATT&CK source imports, you can open the table to compare the same object across releases (hashes and MITRE timestamps). For MITRE’s own release notes and roadmap, see ATT&CK resources — Updates .
Imported snapshots across ATT&CK releases (1)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.1 | 1.0 | Current bundle | c2159a5197a1… |
Mirrored ATT&CK source object
The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.
External references and citations
MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.
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[1]
mitre-attack AN0555Open source URL
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