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T1112 · defense-impairment · persistence · ATT&CK 20.0

Modify Registry

Adversaries may interact with the Windows Registry as part of a variety of other techniques to aid in defense evasion, persistence, and execution. Access to specific areas of the Registry depends on account permissions, with some keys requiring administrator-level access. The built-in Windows command-line utility [Reg](https://attack.mitre.org/software/S0075) may be used for local or remote Registry modification.(Citation: Microsoft Reg) Other tools, such as remote access tools, may also contain functionality to interact with the Registry through the Windows API. The Registry may be modified in order to hide configuration information or malicious payloads via [Obfuscated Files or Information](https://attack.mitre.org/techniques/T1027).(Citation: Unit42 BabyShark Feb 2019)(Citation: Avaddon Ransomware 2021)(Citation: Microsoft BlackCat Jun 2022)(Citation: CISA Russian Gov Critical Infra 2018) The Registry may also be modified to impair defenses, such as by enabling macros for all Microsoft Office products, allowing privilege escalation without alerting the user, increasing the maximum number of allowed outbound requests, and/or modifying systems to store plaintext credentials in memory.(Citation: CISA LockBit 2023)(Citation: Unit42 BabyShark Feb 2019) The Registry of a remote system may be modified to aid in execution of files as part of lateral movement. It requires the remote Registry service to be running on the target system.(Citation: Microsoft Remote) Often [Valid Accounts](https://attack.mitre.org/techniques/T1078) are required, along with access to the remote system…

Open detection, hunting, mitigation, and evidence workspace

Detection logic

Modifications to the Registry are normal and occur throughout typical use of the Windows operating system. Consider enabling Registry Auditing on specific keys to produce an alertable event (Event ID 4657) whenever a value is changed (though this may not trigger when values are created with Reghide or other evasive methods). Changes to Registry entries that load software on Windows startup that do not correlate with known software, patch cycles, etc., are suspicious, as are additions or changes to files within the startup folder. Changes could also include new services and modification of existing binary paths to point to malicious files. If a change to a service-related entry occurs, then it will likely be followed by a local or remote service start or restart to execute the file. Monitor processes and command-line arguments for actions that could be taken to change or delete information in the Registry. Remote access tools with built-in features may interact directly with the Windows API to gather information. The Registry may also be modified through Windows system management tools such as Windows Management Instrumentation and PowerShell, which may require additional logging features to be configured in the operating system to collect necessary information for analysis. Monitor for processes, command-line arguments, and API calls associated with concealing Registry keys, such as Reghide. Inspect and cleanup malicious hidden Registry entries using Native Windows API calls and/or tools such as Autoruns and RegDelNull .

Observed actors

Correlated CTI and IR reports

ATT&CK as a Working Tool: Theory and Hands-On Practical Usage
1200km CTI repository · explicit report mention ATT CK as a Working Tool Theory and Hands On Practical Usage
1200km Medium · authored report mention

Cyber Knowledge context

Use these routes to move from the ATT&CK behavior into explanation, implementation, evidence handling, validation, and defensive operations. Relevance is generated from explicit identifiers/names and governed topic mappings; it is not attribution evidence.

Module 4 — Detection engineering and detection as code
Blue Team & Defensive Security · Tactic learning route · 24/100 Controlled dynamic behavior and differential observation
Malware Analysis & Reverse Engineering · Tactic learning route · 24/100 Windows endpoint and identity forensics
Digital Forensics & Incident Response (DFIR) · Tactic learning route · 24/100 Module 5 — Cloud, containers, and Kubernetes
Red Team & Offensive Security · Tactic learning route · 24/100 Disk, file-system, and persistence forensics
Digital Forensics & Incident Response (DFIR) · Tactic learning route · 24/100

MITRE mitigations

M1024 · Restrict Registry Permissions

Restricting registry permissions involves configuring access control settings for sensitive registry keys and hives to ensure that only authorized users or processes can make modifications. By limiting access, organizations can prevent unauthorized changes that adversaries might use for persistence, privilege escalation, or defense evasion. This mitigation can be implemented through the following measures: Review and Adjust Permissions on Critical Keys - Regularly review permissions on keys such as `Run`, `RunOnce`, and `Services` to ensure only authorized users have write access. - Use tools like `icacls` or `PowerShell` to automate permission adjustments. Enable Registry Auditing - Enable auditing on sensitive keys to log access attempts. - Use Event Viewer or SIEM solutions to analyze logs and detect suspicious activity. - Example Audit Policy: `auditpol /set /subcategory:"Registry"…

MITRE mitigation source

MITRE detection strategies and analytics

DET0280 · Behavior-Based Registry Modification Detection on Windows

AN0781 · Analytic 0781 — Behavior chain involving abnormal registry modifications via CLI, PowerShell, WMI, or direct API calls, especially targeting persistence, privilege escalation, or defense evasion keys, potentially followed by service restart or process execution. Such as editing Notify/Userinit/Startup keys, or disabling SafeDllSearchMode.

MITRE detection source

Continue the investigation

Interactive AdversaryGraph AdversaryGraph documentation CTI Analyst Field Manual Israel Threat Actors CTI Anomaly Detection Atlas Insider Threat Detection Guide 1200km Medium research

Attack tools, simulations and detection rules

Follow explicit source relationships into the reference modules. Linked procedures and detectors are not claims of live validation or actor attribution.

T1112 Modify Registry simulation — Exact active technique ID
T1112 detection rules — Exact active technique ID; not actor-specific detector coverage