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MITRE ATT&CK® Malware

S0530: Melcoz

Melcoz is a banking trojan family built from the open source tool Remote Access PC. Melcoz was first observed in attacks in Brazil and since 2018 has spread to Chile, Mexico, Spain, and Portugal.[1]

EnterpriseS0530MalwareObject v1.1Modified
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Glexia's Take · Automated analysis

Security context for executives and security teams

Automation confidenceMedium

S0530: Melcoz describes [Melcoz](https://attack.mitre.org/software/S0530) is a banking trojan family built from the open source tool Remote Access PC. [Melcoz](https://attack.mitre.org/software/S0530) was first observed in attacks in Brazil and since 2018 has spread to Chile, Mexico, Spain, and Portugal.(Citation: Securelist Brazilian Banking Malware July 2020)

Executive priority

S0530: Melcoz 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 S0530: Melcoz 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 S0530: Melcoz 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

Melcoz

Melcoz is a banking trojan family built from the open source tool Remote Access PC. Melcoz was first observed in attacks in Brazil and since 2018 has spread to Chile, Mexico, Spain, and Portugal.[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.

12 rows
DomainIDNameRelationship / procedure
EnterpriseT1565.002Transmitted Data ManipulationSub-technique

Melcoz can monitor the clipboard for cryptocurrency addresses and change the intended address to one controlled by the adversary.[1]

EnterpriseT1059.010AutoHotKey & AutoITSub-technique

Melcoz has been distributed through an AutoIt loader script.[1]

EnterpriseT1218.007MsiexecSub-technique

Melcoz can use MSI files with embedded VBScript for execution.[1]

EnterpriseT1185Browser Session Hijacking

Melcoz can monitor the victim's browser for online banking sessions and display an overlay window to manipulate the session in the background.[1]

EnterpriseT1105Ingress Tool Transfer

Melcoz has the ability to download additional files to a compromised host.[1]

EnterpriseT1574.001DLLSub-technique

Melcoz can use DLL hijacking to bypass security controls.[1]

EnterpriseT1555.003Credentials from Web BrowsersSub-technique

Melcoz has the ability to steal credentials from web browsers.[1]

EnterpriseT1059.005Visual BasicSub-technique

Melcoz can use VBS scripts to execute malicious DLLs.[1]

EnterpriseT1027.002Software PackingSub-technique

Melcoz has been packed with VMProtect and Themida.[1]

EnterpriseT1115Clipboard Data

Melcoz can monitor content saved to the clipboard.[1]

EnterpriseT1204.001Malicious LinkSub-technique

Melcoz has gained execution through victims opening malicious links.[1]

EnterpriseT1566.002Spearphishing LinkSub-technique

Melcoz has been spread through malicious links embedded in e-mails.[1]

Relationship explorer

All related ATT&CK context

uses · TechniqueT1565.002: Transmitted Data ManipulationEnterpriseuses · TechniqueT1059.010: AutoHotKey & AutoITEnterpriseuses · TechniqueT1218.007: MsiexecEnterpriseuses · TechniqueT1185: Browser Session HijackingEnterpriseuses · TechniqueT1105: Ingress Tool TransferEnterpriseuses · TechniqueT1574.001: DLLEnterpriseuses · TechniqueT1555.003: Credentials from Web BrowsersEnterpriseuses · TechniqueT1059.005: Visual BasicEnterpriseuses · TechniqueT1027.002: Software PackingEnterpriseuses · TechniqueT1115: Clipboard DataEnterpriseuses · TechniqueT1204.001: Malicious LinkEnterpriseuses · TechniqueT1566.002: Spearphishing LinkEnterprise
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
1.1
Created
Modified
Raw hash
73049871632bda10...
Imported snapshots across ATT&CK releases(2)
ReleaseBundle importedObject versionModifiedStatusRaw hash
19.21.1Current bundle73049871632b…
19.11.1Older bundle73049871632b…
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]
    Securelist Brazilian Banking Malware July 2020

    GReAT. (2020, July 14). The Tetrade: Brazilian banking malware goes global. Retrieved November 9, 2020.

    Open source URL
  2. [2]
    mitre-attackS0530
    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.

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