LiveActive security incident?Get immediate response
MITRE ATT&CK® Malware

S0630: Nebulae

Nebulae Is a backdoor that has been used by Naikon since at least 2020.[1]

EnterpriseS0630MalwareObject v1.0Modified
Discuss defensive coverageBack to ATT&CK
Glexia's Take · Automated analysis

Security context for executives and security teams

Automation confidenceHigh

Nebulae is a Windows backdoor in ATT&CK associated through MITRE with Naikon and a 2021 Bitdefender report. Its value for defenders is not a single signature, but the pattern of behavior around persistence, command execution, discovery, file collection, tool transfer, encrypted/non-application-layer command and control, and cleanup. For leaders, this is a reminder that backdoor readiness depends on endpoint visibility, Windows persistence monitoring, network egress governance, and incident response ability to reconstruct host activity even when files are deleted.

Executive priority

Treat Nebulae as a control-validation case for Windows endpoint resilience and espionage-style intrusion readiness. Priority questions include: can the organization prove coverage for suspicious Windows services, Run keys/startup persistence, DLL abuse, command shell execution, local discovery, inbound tool transfer, unusual C2 protocols, and file deletion? Because ATT&CK provides no dedicated detection text for this malware, assurance should come from tested telemetry and investigation playbooks rather than assumptions about malware-name detection.

Technical view

ATT&CK lists Nebulae as Windows malware and relates it to techniques including Windows Command Shell, Native API, Windows Service persistence, Registry Run Keys/Startup Folder, DLL abuse, masquerading, file and process discovery, local data collection, ingress tool transfer, non-application-layer protocol C2, symmetric cryptography, and file deletion. SOC and IR teams should validate behavior-based detections across these chains: creation or modification of services and autoruns; suspicious DLL loading or naming/location mismatches; cmd.exe-driven discovery and file operations; unexpected file transfer into hosts; anomalous encrypted or non-standard egress; and deletion of dropped tools or staging files. Relationship context ties the malware to Naikon, but local triage should avoid attribution conclusions unless supported by environment-specific evidence.

Likely telemetry

  • Windows endpoint process creation and command-line telemetry
  • Windows service creation/modification events and related Registry changes
  • Registry Run key and Startup folder monitoring
  • DLL load events, module paths, and executable-to-DLL relationship data
  • File creation, rename, staging, and deletion events

Detection direction

  • Build detections around the related behaviors rather than the malware name, since official ATT&CK detection guidance is not provided.
  • Correlate persistence events with execution and network activity: new or changed Windows services, Run keys, startup entries, or DLL activity followed by command shell use or outbound connections should receive higher priority.
  • Tune masquerading analytics for names and paths that resemble legitimate Windows resources, while accounting for legitimate software updates and administrative tooling to reduce false positives.
  • Look for discovery sequences involving process, file, directory, and local storage enumeration, especially when performed by unexpected processes or newly observed binaries.
  • Validate visibility into file deletion after execution or staging, since cleanup behavior can reduce forensic evidence and complicate incident scoping.

Mitigation priorities

  • Prioritize hardening and monitoring of Windows persistence locations, including services, Run keys, Startup folders, and DLL search/load behavior.
  • Restrict and audit administrative ability to create services, modify autoruns, and place executables or DLLs in trusted locations.
  • Apply egress controls and protocol governance so unusual outbound channels and unsanctioned encrypted communications are visible and actionable.
  • Ensure EDR or equivalent controls retain process, file, Registry, module-load, and network telemetry long enough to support incident reconstruction after file deletion.
  • Maintain tested IR playbooks for backdoor investigations, including host isolation, persistence review, timeline reconstruction, and collection of volatile artifacts where appropriate.
Additional notes and limits

The supplied ATT&CK object identifies Nebulae as a Windows backdoor used by Naikon since at least 2020 and provides a Bitdefender external reference. The relationship set is rich enough to drive behavior-based defensive validation across persistence, execution, discovery, collection, C2, transfer, stealth, and cleanup. Several related techniques have broader ATT&CK platform lists, but this take treats Nebulae itself as Windows because that is the platform supplied for the malware object.

Official detection text is not provided, and the supplied object does not include indicators, hashes, C2 infrastructure, procedures, prevalence, victim details, or confirmed current activity. Any assessment of exposure, detection coverage, or attribution requires local telemetry, case evidence, and intelligence validation.

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Official MITRE ATT&CK definition

Nebulae

Nebulae Is a backdoor that has been used by Naikon since at least 2020.[1]

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

Techniques used

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.

15 rows
DomainIDNameRelationship / procedure
EnterpriseT1105Ingress Tool Transfer

Nebulae can download files from C2.[1]

EnterpriseT1680Local Storage Discovery

Nebulae can discover logical drive information including the drive type, free space, and volume information.[1]

EnterpriseT1005Data from Local System

Nebulae has the capability to upload collected files to C2.[1]

EnterpriseT1095Non-Application Layer Protocol

Nebulae can use TCP in C2 communications.[1]

EnterpriseT1547.001Registry Run Keys / Startup FolderSub-technique

Nebulae can achieve persistence through a Registry Run key.[1]

EnterpriseT1057Process Discovery

Nebulae can enumerate processes on a target system.[1]

EnterpriseT1106Native API

Nebulae has the ability to use CreateProcess to execute a process.[1]

EnterpriseT1036.004Masquerade Task or ServiceSub-technique

Nebulae has created a service named "Windows Update Agent1" to appear legitimate.[1]

EnterpriseT1070.004File DeletionSub-technique

Nebulae has the ability to delete files and directories.[1]

EnterpriseT1543.003Windows ServiceSub-technique

Nebulae can create a service to establish persistence.[1]

EnterpriseT1036.005Match Legitimate Resource Name or LocationSub-technique

Nebulae uses functions named StartUserModeBrowserInjection and StopUserModeBrowserInjection indicating that it's trying to imitate chrome_frame_helper.dll.[1]

EnterpriseT1574.001DLLSub-technique

Nebulae can use DLL side-loading to gain execution.[1]

EnterpriseT1059.003Windows Command ShellSub-technique

Nebulae can use CMD to execute a process.[1]

EnterpriseT1083File and Directory Discovery

Nebulae can list files and directories on a compromised host.[1]

EnterpriseT1573.001Symmetric CryptographySub-technique

Nebulae can use RC4 and XOR to encrypt C2 communications.[1]

Associated objects

Groups, software, and campaigns

GroupEnterprise

G0019: Naikon

Naikon is assessed to be a state-sponsored cyber espionage group attributed to the Chinese People’s Liberation Army’s (PLA) Chengdu Military Region Second Technical Reconnaissance Bureau (Military Unit Cover Designator 78020).[1] Active since at least 2010, Naikon has primarily conducted operations against government, military, and civil organizations in Southeast Asia, as well as against international bodies such as the United Nations Development Programme (UNDP) and the Association of Southeast Asian Nations (ASEAN).[1][2]

While Naikon shares some characteristics with APT30, the two groups do not appear to be exact matches.[3]

Relationship explorer

All related ATT&CK context

uses · TechniqueT1105: Ingress Tool TransferEnterpriseuses · TechniqueT1680: Local Storage DiscoveryEnterpriseuses · TechniqueT1005: Data from Local SystemEnterpriseuses · TechniqueT1095: Non-Application Layer ProtocolEnterpriseuses · TechniqueT1547.001: Registry Run Keys / Startup FolderEnterpriseuses · TechniqueT1057: Process DiscoveryEnterpriseuses · TechniqueT1106: Native APIEnterpriseuses · GroupG0019: NaikonEnterpriseuses · TechniqueT1036.004: Masquerade Task or ServiceEnterpriseuses · TechniqueT1070.004: File DeletionEnterpriseuses · TechniqueT1543.003: Windows ServiceEnterpriseuses · TechniqueT1036.005: Match Legitimate Resource Name or LocationEnterpriseuses · TechniqueT1574.001: DLLEnterpriseuses · TechniqueT1059.003: Windows Command ShellEnterpriseuses · TechniqueT1083: File and Directory DiscoveryEnterpriseuses · TechniqueT1573.001: Symmetric CryptographyEnterprise
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
058aee646eafa76c...
Imported snapshots across ATT&CK releases(1)
ReleaseBundle importedObject versionModifiedStatusRaw hash
19.11.0Current bundle058aee646eaf…
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 JSONOpen 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]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  2. [2]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  3. [3]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  4. [4]
    mitre-attackS0630
    Open source URL
  5. [5]
    mitre-attackS0630
    Open source URL
  6. [6]
    mitre-attackS0630
    Open source URL
  7. [7]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  8. [8]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  9. [9]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  10. [10]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  11. [11]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  12. [12]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  13. [13]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  14. [14]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  15. [15]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  16. [16]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  17. [17]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  18. [18]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  19. [19]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  20. [20]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  21. [21]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  22. [22]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  23. [23]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  24. [24]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  25. [25]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  26. [26]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  27. [27]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  28. [28]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  29. [29]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  30. [30]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  31. [31]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  32. [32]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  33. [33]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  34. [34]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  35. [35]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
  36. [36]
    Bitdefender Naikon April 2021

    Vrabie, V. (2021, April 23). NAIKON – Traces from a Military Cyber-Espionage Operation. Retrieved June 29, 2021.

    Open source URL
Source and licensing

Source: MITRE ATT&CK®. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation. Glexia is not affiliated with or endorsed by MITRE.

Official MITRE ATT&CK siteOfficial STIX data repositoryMITRE ATT&CK terms of use