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MITRE ATT&CK® Malware

S0258: RGDoor

RGDoor is a malicious Internet Information Services (IIS) backdoor developed in the C++ language. RGDoor has been seen deployed on webservers belonging to the Middle East government organizations. RGDoor provides backdoor access to compromised IIS servers. [1]

EnterpriseS0258MalwareObject v1.2Modified
Glexia's Take · Automated analysis

Security context for executives and security teams

Automation confidenceMedium

S0258: RGDoor describes [RGDoor](https://attack.mitre.org/software/S0258) is a malicious Internet Information Services (IIS) backdoor developed in the C++ language. [RGDoor](https://attack.mitre.org/software/S0258) has been seen deployed on webservers belonging to the Middle East government organizations. [RGDoor](https://attack.mitre.org/software/S0258) provides backdoor access to compromised IIS servers. (Citation: Unit 42 RGDoor Jan 2018)

Executive priority

S0258: RGDoor is an official MITRE ATT&CK software. Glexia treats it as defensive behavior context for prioritizing monitoring, control validation, and response planning without using the object by itself as an attribution claim.

Technical view

Security teams should validate S0258: RGDoor by reviewing the official ATT&CK relationships, mapped tactics (the mapped ATT&CK tactic context), supported platforms (Windows), and available local telemetry before making detection or mitigation decisions.

Likely telemetry

  • Official ATT&CK relationships and object metadata
  • Network, endpoint, and security-tool telemetry

Detection direction

  • Validate whether S0258: RGDoor appears in your detection coverage and tabletop scenarios.
  • Use the object to align executive risk language with SOC, incident response, and detection engineering work.
  • Do not treat ATT&CK relationship context as attribution without corroborating evidence.

Mitigation priorities

  • Map the object to existing controls and identify missing telemetry or response ownership.
  • Prioritize mitigations that reduce exposure on the listed platforms and tactics.
  • Review adjacent ATT&CK relationships before changing policy, detections, or reporting language.
Additional notes and limits

Baseline Glexia take generated from the official MITRE ATT&CK STIX object, source hash, tactics, platforms, and detection fields. It is safe to replace with a richer model-generated take for the same source hash later.

This baseline take is source-grounded and schema-validated, but it does not include environment-specific telemetry, incident evidence, or threat-intelligence corroboration.

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

Official MITRE ATT&CK definition

RGDoor

RGDoor is a malicious Internet Information Services (IIS) backdoor developed in the C++ language. RGDoor has been seen deployed on webservers belonging to the Middle East government organizations. RGDoor provides backdoor access to compromised IIS servers. [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.

7 rows
DomainIDNameRelationship / procedure
EnterpriseT1505.004IIS ComponentsSub-technique

RGDoor establishes persistence on webservers as an IIS module.[1]CitationESET IIS Malware 2021

EnterpriseT1059.003Windows Command ShellSub-technique

RGDoor uses cmd.exe to execute commands on the victim’s machine.[1]

EnterpriseT1560.003Archive via Custom MethodSub-technique

RGDoor encrypts files with XOR before sending them back to the C2 server.[1]

EnterpriseT1071.001Web ProtocolsSub-technique

RGDoor uses HTTP for C2 communications.[1]

EnterpriseT1033System Owner/User Discovery

RGDoor executes the whoami on the victim’s machine.[1]

EnterpriseT1140Deobfuscate/Decode Files or Information

RGDoor decodes Base64 strings and decrypts strings using a custom XOR algorithm.[1]

EnterpriseT1105Ingress Tool Transfer

RGDoor uploads and downloads files to and from the victim’s machine.[1]

Associated objects

Groups, software, and campaigns

GroupEnterprise

G0049: OilRig

OilRig is a suspected Iranian threat group that has targeted Middle Eastern and international victims since at least 2014. The group has targeted a variety of sectors, including financial, government, energy, chemical, and telecommunications. It appears the group carries out supply chain attacks, leveraging the trust relationship between organizations to attack their primary targets. The group works on behalf of the Iranian government based on infrastructure details that contain references to Iran, use of Iranian infrastructure, and targeting that aligns with nation-state interests.[1][2][3][4][5][6][7]

Relationship explorer

All related ATT&CK context

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
19.2
Object version
1.2
Created
Modified
Raw hash
f52c7eecaeff5cff...
Imported snapshots across ATT&CK releases(2)
ReleaseBundle importedObject versionModifiedStatusRaw hash
19.21.2Current bundlef52c7eecaeff…
19.11.2Older bundlef52c7eecaeff…
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.

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]
    Unit 42 RGDoor Jan 2018

    Falcone, R. (2018, January 25). OilRig uses RGDoor IIS Backdoor on Targets in the Middle East. Retrieved July 6, 2018.

    Open source URL
  2. [2]
    RGDoor

    (Citation: Unit 42 RGDoor Jan 2018)

  3. [3]
    mitre-attackS0258
    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.