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MITRE ATT&CK® Technique

T1685.005: Clear Windows Event Logs

Adversaries may clear Windows Event Logs to hide the activity of an intrusion. Windows Event Logs are a record of a computer's alerts and notifications. There are three system-defined sources of events: System, Application, and Security, with five event types: Error, Warning, Information, Success Audit, and Failure Audit.

With administrator privileges, the event logs can be cleared with the following utility commands:

* `wevtutil cl system` * `wevtutil cl application` * `wevtutil cl security`

These logs may also be cleared through other mechanisms, such as the event viewer GUI or PowerShell. For example, adversaries may use the PowerShell command `Remove-EventLog -LogName Security` to delete the Security EventLog and after reboot, disable future logging. Note: events may still be generated and logged in the .evtx file between the time the command is run and the reboot.[1]

Adversaries may also attempt to clear logs by directly deleting the stored log files within `C:\Windows\System32\winevt\logs\`.

EnterpriseT1685.005Sub-techniqueObject v1.0 Modified
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Glexia's Take

Analyst context for executives and security teams

Analyst confidence High

Clearing Windows Event Logs is a visibility-denial behavior: it does not create the initial compromise, but it can remove the evidence leaders and responders need to understand scope, preserve audit trails, and make containment decisions. Because it requires administrator-level capability and targets System, Application, and Security logs, it is especially material during ransomware, espionage, insider, or hands-on-keyboard investigations where proof of activity and timeline reconstruction matter.

Executive priority

Treat this as an incident-readiness and evidence-preservation priority for Windows environments. The key business question is whether endpoint logs survive local administrator tampering long enough to support investigation, legal/audit needs, and continuity decisions. Budget and control discussions should prioritize off-host log retention, least-privilege administration, and validated SOC alerting for log-clearing behavior. ATT&CK relationships show this behavior is used across multiple campaigns, groups, and software entries, so it should be covered as a baseline Windows defense-impairment scenario rather than a niche detection.

Technical view

For SOC, detection engineering, and IR teams, validate coverage for Windows log clearing through built-in utilities, PowerShell, Event Viewer, and direct manipulation of stored .evtx files under C:\Windows\System32\winevt\logs\. The technique is a sub-technique of Disable or Modify Tools under defense-impairment, so detections should not only look for a single command or UI action; they should correlate log-clear activity with administrator context, suspicious process execution, PowerShell activity, direct log-file deletion, reboot timing, and gaps between endpoint and centralized log stores. The related DET0532 detection strategy indicates a behavioral-chain approach is relevant. Official ATT&CK detection text is not provided, so local engineering must define and test the specific analytics.

Likely telemetry

  • Windows System, Application, and Security Event Logs from endpoints and servers
  • Centralized or remote log storage showing forwarded Windows events before local clearing
  • Process execution and command-line telemetry for Windows utilities associated with log management, including wevtutil
  • PowerShell execution telemetry for log-management commands such as Remove-EventLog
  • File activity telemetry for .evtx files in C:\Windows\System32\winevt\logs\

Detection direction

  • Validate whether local log clearing is still visible in centrally collected logs; if the first alert depends only on the local host after clearing, coverage is fragile.
  • Tune detections around behavioral chains: admin context plus log-clear utility use, PowerShell log removal, Event Viewer-driven clearing, or direct .evtx deletion.
  • Baseline legitimate administrative maintenance so SOC triage can distinguish approved log rotation or troubleshooting from unexpected clearing on servers, workstations, domain-connected systems, or sensitive Windows assets.
  • Alert on loss or interruption of expected Windows log forwarding, especially when paired with recent privileged activity or security-tool impairment behavior.
  • Test coverage against the ATT&CK-described mechanisms without assuming one command covers the technique; the official object names multiple mechanisms and provides no official detection logic.

Mitigation priorities

  • Prioritize M1029 Remote Data Storage: forward critical Windows logs to secure off-host storage so local clearing does not erase investigative evidence.
  • Apply M1022 Restrict File and Directory Permissions: limit who and what can write to or delete sensitive log files and directories, consistent with least privilege.
  • Review administrator rights and operational processes because the official description notes administrator privileges can clear logs.
  • Use M1041 Encrypt Sensitive Information where relevant to protect sensitive data at rest and in transit, while recognizing encryption alone does not replace off-host log preservation or privilege control.
  • Define retention, access control, and audit requirements for Windows logs as part of incident response and compliance readiness, then test them with tabletop or purple-team validation.
Analyst notes and limits

This ATT&CK object is Windows-specific and focused on defense impairment through clearing Windows Event Logs. Relationship context maps it to a behavioral-chain detection strategy, three mitigations, a revoked legacy technique reference, and numerous groups, campaigns, and software entries. Those relationships support prioritizing this behavior, but they do not prove current activity against any specific organization.

MITRE provides no official detection section for this object. The supplied data does not include specific event IDs, SIEM queries, product coverage, exploit details, or environment-specific prevalence. Local validation is required to determine whether Windows events, process telemetry, PowerShell activity, file activity, and remote log retention are actually collected and retained.

Official MITRE ATT&CK definition

Clear Windows Event Logs

Adversaries may clear Windows Event Logs to hide the activity of an intrusion. Windows Event Logs are a record of a computer's alerts and notifications. There are three system-defined sources of events: System, Application, and Security, with five event types: Error, Warning, Information, Success Audit, and Failure Audit.

With administrator privileges, the event logs can be cleared with the following utility commands:

* `wevtutil cl system` * `wevtutil cl application` * `wevtutil cl security`

These logs may also be cleared through other mechanisms, such as the event viewer GUI or PowerShell. For example, adversaries may use the PowerShell command `Remove-EventLog -LogName Security` to delete the Security EventLog and after reboot, disable future logging. Note: events may still be generated and logged in the .evtx file between the time the command is run and the reboot.[1]

Adversaries may also attempt to clear logs by directly deleting the stored log files within `C:\Windows\System32\winevt\logs\`.

View the same entry on attack.mitre.org (MITRE-hosted reference; in-page links above use the Glexia ATT&CK library.)

Glexia analysis

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.

ATT&CK relationship table

Related techniques

This mirrors the MITRE pattern of making group, software, campaign, and technique relationships scannable. Relationship notes come from mirrored ATT&CK relationship text when available.

2 rows
Domain ID Name Relationship / procedure
Enterprise T1685 Disable or Modify Tools This object subtechnique of Disable or Modify Tools.
Enterprise T1070.001 Clear Windows Event Logs Sub-technique Clear Windows Event Logs revoked by this object.
Associated objects

Groups, software, and campaigns

Group Enterprise

G1054: MirrorFace

MirrorFace is a People's Republic of China (PRC)-aligned cyberespionage actor believed to be a subgroup under the menuPass umbrella based on targeting, tools, and infrastructure overlaps. MirrorFace has been active since at least 2019, at first exclusively targeting Japanese organizations across the media, defense, diplomatic, financial, manufacturing, and academic sectors. Subsequent MirrorFace operations included targets in Central Europe and featured use of LODEINFO, HiddenFace, and UPPERCUT malware.[1][2][3][4][5][6]

Group Enterprise

G0096: APT41

APT41 is a threat group that researchers have assessed as Chinese state-sponsored espionage group that also conducts financially-motivated operations. Active since at least 2012, APT41 has been observed targeting various industries, including but not limited to healthcare, telecom, technology, finance, education, retail and video game industries in 14 countries.[1] Notable behaviors include using a wide range of malware and tools to complete mission objectives. APT41 overlaps at least partially with public reporting on groups including BARIUM and Winnti Group.[2][3]

Group Enterprise

G1017: Volt Typhoon

Volt Typhoon is a People's Republic of China (PRC) state-sponsored actor that has been active since at least 2021, primarily targeting critical infrastructure organizations in the US and its territories including Guam. Volt Typhoon's targeting and pattern of behavior have been assessed as pre-positioning to enable lateral movement to operational technology (OT) assets for potential destructive or disruptive attacks. Volt Typhoon has emphasized stealth in operations using web shells, living-off-the-land (LOTL) binaries, hands on keyboard activities, and stolen credentials.[1][2][3][4]. The group has leveraged compromised SOHO routers to proxy command and control traffic and obscure its infrastructure, activity associated with the KV botnet.[5].

Reporting indicates a separate initial access cluster, SYLVANITE, has been observed exploiting internet-facing edge devices and transferring access to Volt Typhoon, also tracked as VOLTZITE, for follow-on operations. [6]

Group Enterprise

G0082: APT38

APT38 is a North Korean state-sponsored threat group that specializes in financial cyber operations; it has been attributed to the Reconnaissance General Bureau.[1] Active since at least 2014, APT38 has targeted banks, financial institutions, casinos, cryptocurrency exchanges, SWIFT system endpoints, and ATMs in at least 38 countries worldwide. Significant operations include the 2016 Bank of Bangladesh heist, during which APT38 stole $81 million, as well as attacks against Bancomext [2] and Banco de Chile [2]; some of their attacks have been destructive.[1][2][3][4]

North Korean group definitions are known to have significant overlap, and some security researchers report all North Korean state-sponsored cyber activity under the name Lazarus Group instead of tracking clusters or subgroups.

Group Enterprise

G1040: Play

Play is a ransomware group that has been active since at least 2022 deploying Playcrypt ransomware against the business, government, critical infrastructure, healthcare, and media sectors in North America, South America, and Europe. Play actors employ a double-extortion model, encrypting systems after exfiltrating data, and are presumed by security researchers to operate as a closed group.[1][2]

Group Enterprise

G0053: FIN5

FIN5 is a financially motivated threat group that has targeted personally identifiable information and payment card information. The group has been active since at least 2008 and has targeted the restaurant, gaming, and hotel industries. The group is made up of actors who likely speak Russian. [1] [2] [3]

Group Enterprise

G0114: Chimera

Chimera is a suspected China-based threat group that has been active since at least 2018 targeting the semiconductor industry in Taiwan as well as data from the airline industry.[1][2]

Group Enterprise

G0035: Dragonfly

Dragonfly is a cyber espionage group that has been attributed to Russia's Federal Security Service (FSB) Center 16.[1][2] Active since at least 2010, Dragonfly has targeted defense and aviation companies, government entities, companies related to industrial control systems, and critical infrastructure sectors worldwide through supply chain, spearphishing, and drive-by compromise attacks.[3][4][5][6][7][8][9]

Group Enterprise

G0061: FIN8

FIN8 is a financially motivated threat group that has been active since at least January 2016, and known for targeting organizations in the hospitality, retail, entertainment, insurance, technology, chemical, and financial sectors. In June 2021, security researchers detected FIN8 switching from targeting point-of-sale (POS) devices to distributing a number of ransomware variants.[1][2][3][4]

Group Enterprise

G0050: APT32

APT32 is a suspected Vietnam-based threat group that has been active since at least 2014. The group has targeted multiple private sector industries as well as foreign governments, dissidents, and journalists with a strong focus on Southeast Asian countries like Vietnam, the Philippines, Laos, and Cambodia. They have extensively used strategic web compromises to compromise victims.[1][2][3]

Group Enterprise

G0007: APT28

APT28 is a threat group that has been attributed to Russia's General Staff Main Intelligence Directorate (GRU) 85th Main Special Service Center (GTsSS) military unit 26165.[1][2] This group has been active since at least 2004.[3][4][5][6][7][8][9][10][11][12][13]

APT28 reportedly compromised the Hillary Clinton campaign, the Democratic National Committee, and the Democratic Congressional Campaign Committee in 2016 in an attempt to interfere with the U.S. presidential election.[5] In 2018, the US indicted five GRU Unit 26165 officers associated with APT28 for cyber operations (including close-access operations) conducted between 2014 and 2018 against the World Anti-Doping Agency (WADA), the US Anti-Doping Agency, a US nuclear facility, the Organization for the Prohibition of Chemical Weapons (OPCW), the Spiez Swiss Chemicals Laboratory, and other organizations.[14] Some of these were conducted with the assistance of GRU Unit 74455, which is also referred to as Sandworm Team.

Malware Enterprise

S1068: BlackCat

BlackCat is ransomware written in Rust that has been offered via the Ransomware-as-a-Service (RaaS) model. First observed November 2021, BlackCat has been used to target multiple sectors and organizations in various countries and regions in Africa, the Americas, Asia, Australia, and Europe.[1][2][3]

LinuxWindows
Malware Enterprise

S0182: FinFisher

FinFisher is a government-grade commercial surveillance spyware reportedly sold exclusively to government agencies for use in targeted and lawful criminal investigations. It is heavily obfuscated and uses multiple anti-analysis techniques. It has other variants including Wingbird. [1] [2] [3] [4] [5]

WindowsAndroid
Malware Enterprise

S0089: BlackEnergy

BlackEnergy is a malware toolkit that has been used by both criminal and APT actors. It dates back to at least 2007 and was originally designed to create botnets for use in conducting Distributed Denial of Service (DDoS) attacks, but its use has evolved to support various plug-ins. It is well known for being used during the confrontation between Georgia and Russia in 2008, as well as in targeting Ukrainian institutions. Variants include BlackEnergy 2 and BlackEnergy 3. [1]

Windows
Malware Enterprise

S1060: Mafalda

Mafalda is a flexible interactive implant that has been used by Metador. Security researchers assess the Mafalda name may be inspired by an Argentinian cartoon character that has been popular as a means of political commentary since the 1960s. [1]

Windows
Malware Enterprise

S0688: Meteor

Meteor is a wiper that was used against Iranian government organizations, including Iranian Railways, the Ministry of Roads, and Urban Development systems, in July 2021. Meteor is likely a newer version of similar wipers called Stardust and Comet that were reportedly used by a group called "Indra" since at least 2019 against private companies in Syria.[1]

Windows
Malware Enterprise

S0368: NotPetya

NotPetya is malware that was used by Sandworm Team in a worldwide attack starting on June 27, 2017. While NotPetya appears as a form of ransomware, its main purpose was to destroy data and disk structures on compromised systems; the attackers never intended to make the encrypted data recoverable. As such, NotPetya may be more appropriately thought of as a form of wiper malware. NotPetya contains worm-like features to spread itself across a computer network using the SMBv1 exploits EternalBlue and EternalRomance.[1][2][3][4]

Windows
Malware Enterprise

S1202: LockBit 3.0

LockBit 3.0 is an evolution of the LockBit Ransomware-as-a-Service (RaaS) offering with similarities to BlackMatter and BlackCat ransomware. LockBit 3.0 has been in use since at least June 2022 and features enhanced defense evasion and exfiltration tactics, robust encryption methods for Windows and VMware ESXi systems, and a more refined RaaS structure over its predecessors such as LockBit 2.0.[1][2][3][4]

Windows
Malware Enterprise

S1178: ShrinkLocker

ShrinkLocker is a VBS-based malicious script that leverages the legitimate Bitlocker application to encrypt files on victim systems for ransom. ShrinkLocker functions by using Bitlocker to encrypt files, then renames impacted drives to the adversary’s contact email address to facilitate communication for the ransom payment.[1][2]

Windows
Campaign Enterprise

C0014: Operation Wocao

Operation Wocao was a cyber espionage campaign that targeted organizations around the world, including in Brazil, China, France, Germany, Italy, Mexico, Portugal, Spain, the United Kingdom, and the United States. The suspected China-based actors compromised government organizations and managed service providers, as well as aviation, construction, energy, finance, health care, insurance, offshore engineering, software development, and transportation companies.[1]

Security researchers assessed the Operation Wocao actors used similar TTPs and tools as APT20, suggesting a possible overlap. Operation Wocao was named after an observed command line entry by one of the threat actors, possibly out of frustration from losing webshell access.[1]

Relationship explorer

All related ATT&CK context

uses · Malware S1133: Apostle Enterprise uses · Malware S1068: BlackCat Enterprise uses · Malware S0182: FinFisher Enterprise uses · Malware S0089: BlackEnergy Enterprise uses · Malware S1060: Mafalda Enterprise uses · Group G1054: MirrorFace Enterprise uses · Malware S0688: Meteor Enterprise uses · Malware S1135: MultiLayer Wiper Enterprise uses · Malware S0032: gh0st RAT Enterprise uses · Campaign C0060: Operation AkaiRyū Enterprise uses · Group G0096: APT41 Enterprise uses · Malware S0368: NotPetya Enterprise uses · Malware S1202: LockBit 3.0 Enterprise uses · Group G1017: Volt Typhoon Enterprise mitigates · Mitigation M1029: Remote Data Storage Enterprise uses · Malware S1178: ShrinkLocker Enterprise uses · Group G0082: APT38 Enterprise uses · Malware S0698: HermeticWizard Enterprise uses · Malware S1242: Qilin Enterprise uses · Malware S0365: Olympic Destroyer Enterprise uses · Malware S0203: Hydraq Enterprise uses · Group G1040: Play Enterprise subtechnique of · Technique T1685: Disable or Modify Tools Enterprise uses · Malware S0607: KillDisk Enterprise
Mitigations

Mitigation direction

Mitigation Enterprise

M1029: Remote Data Storage

Remote Data Storage focuses on moving critical data, such as security logs and sensitive files, to secure, off-host locations to minimize unauthorized access, tampering, or destruction by adversaries. By leveraging remote storage solutions, organizations enhance the protection of forensic evidence, sensitive information, and monitoring data. This mitigation can be implemented through the following measures:

Centralized Log Management:

- Configure endpoints to forward security logs to a centralized log collector or SIEM. - Use tools like Splunk Graylog, or Security Onion to aggregate and store logs. - Example command (Linux): `sudo auditd | tee /var/log/audit/audit.log | nc 514`

Remote File Storage Solutions:

- Utilize cloud storage solutions like AWS S3, Google Cloud Storage, or Azure Blob Storage for sensitive data. - Ensure proper encryption at rest and access control policies (IAM roles, ACLs).

Intrusion Detection Log Forwarding:

- Forward logs from IDS/IPS systems (e.g., Zeek/Suricata) to a remote security information system. - Example for Suricata log forwarding: `outputs: - type: syslog protocol: tls address: `

Immutable Backup Configurations:

- Enable immutable storage settings for backups to prevent adversaries from modifying or deleting data. - Example: AWS S3 Object Lock.

Data Encryption:

- Ensure encryption for sensitive data using AES-256 at rest and TLS 1.2+ for data in transit. Tools: OpenSSL, BitLocker, LUKS for Linux.

Mitigation Enterprise

M1041: Encrypt Sensitive Information

Protect sensitive information at rest, in transit, and during processing by using strong encryption algorithms. Encryption ensures the confidentiality and integrity of data, preventing unauthorized access or tampering. This mitigation can be implemented through the following measures:

Encrypt Data at Rest:

- Use Case: Use full-disk encryption or file-level encryption to secure sensitive data stored on devices. - Implementation: Implement BitLocker for Windows systems or FileVault for macOS devices to encrypt hard drives.

Encrypt Data in Transit:

- Use Case: Use secure communication protocols (e.g., TLS, HTTPS) to encrypt sensitive data as it travels over networks. - Implementation: Enable HTTPS for all web applications and configure mail servers to enforce STARTTLS for email encryption.

Encrypt Backups:

- Use Case: Ensure that backup data is encrypted both during storage and transfer to prevent unauthorized access. - Implementation: Encrypt cloud backups using AES-256 before uploading them to Amazon S3 or Google Cloud.

Encrypt Application Secrets:

- Use Case: Store sensitive credentials, API keys, and configuration files in encrypted vaults. - Implementation: Use HashiCorp Vault or AWS Secrets Manager to manage and encrypt secrets.

Database Encryption:

- Use Case: Enable Transparent Data Encryption (TDE) or column-level encryption in database management systems. - Implementation: Use MySQL’s built-in encryption features to encrypt sensitive database fields such as social security numbers.

Mitigation Enterprise

M1022: Restrict File and Directory Permissions

Restricting file and directory permissions involves setting access controls at the file system level to limit which users, groups, or processes can read, write, or execute files. By configuring permissions appropriately, organizations can reduce the attack surface for adversaries seeking to access sensitive data, plant malicious code, or tamper with system files.

Enforce Least Privilege Permissions:

- Remove unnecessary write permissions on sensitive files and directories. - Use file ownership and groups to control access for specific roles.

Example (Windows): Right-click the shared folder → Properties → Security tab → Adjust permissions for NTFS ACLs.

Harden File Shares:

- Disable anonymous access to shared folders. - Enforce NTFS permissions for shared folders on Windows.

Example: Set permissions to restrict write access to critical files, such as system executables (e.g., `/bin` or `/sbin` on Linux). Use tools like `chown` and `chmod` to assign file ownership and limit access.

On Linux, apply: `chmod 750 /etc/sensitive.conf` `chown root:admin /etc/sensitive.conf`

File Integrity Monitoring (FIM):

- Use tools like Tripwire, Wazuh, or OSSEC to monitor changes to critical file permissions.

Audit File System Access:

- Enable auditing to track permission changes or unauthorized access attempts. - Use auditd (Linux) or Event Viewer (Windows) to log activities.

Restrict Startup Directories:

- Configure permissions to prevent unauthorized writes to directories like `C:\ProgramData\Microsoft\Windows\Start Menu`.

Example: Restrict write access to critical directories like `/etc/`, `/usr/local/`, and Windows directories such as `C:\Windows\System32`.

- On Windows, use icacls to modify permissions: `icacls "C:\Windows\System32" /inheritance:r /grant:r SYSTEM:(OI)(CI)F` - On Linux, monitor permissions using tools like `lsattr` or `auditd`.

Change history

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 .

ATT&CK release
19.1
Object version
1.0
Created
Modified
Raw hash
ace406d3dadfe1b7...
Imported snapshots across ATT&CK releases (1)
Release Bundle imported Object version Modified Status Raw hash
19.1 1.0 Current bundle ace406d3dadf…
Raw source

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.

Open mirrored raw JSON Open MITRE-hosted copy
Source references

External references and citations

MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.

  1. [1]
    disable_win_evt_logging

    Heiligenstein, L. (n.d.). REP-25: Disable Windows Event Logging. Retrieved April 7, 2022.

    Open source URL
  2. [2]
    mitre-attack T1685.005
    Open source URL
Source and licensing

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