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MITRE ATT&CK® Malware

S0406: Gustuff

Gustuff is mobile malware designed to steal users' banking and virtual currency credentials.[1]

MobileS0406MalwareObject v1.0Modified
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Glexia's Take · Automated analysis

Security context for executives and security teams

Automation confidenceMedium

S0406: Gustuff describes [Gustuff](https://attack.mitre.org/software/S0406) is mobile malware designed to steal users' banking and virtual currency credentials.(Citation: Talos Gustuff Apr 2019)

Executive priority

S0406: Gustuff 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 S0406: Gustuff by reviewing the official ATT&CK relationships, mapped tactics (the mapped ATT&CK tactic context), supported platforms (Android), and available local telemetry before making detection or mitigation decisions.

Likely telemetry

  • Official ATT&CK relationships and object metadata

Detection direction

  • Validate whether S0406: Gustuff 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

Gustuff

Gustuff is mobile malware designed to steal users' banking and virtual currency credentials.[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
MobileT1406Obfuscated Files or Information

Gustuff obfuscated command information using a custom base85-based encoding.[1]

MobileT1533Data from Local System

Gustuff can capture files and photos from the compromised device.[1]

MobileT1418.001Security Software DiscoverySub-technique

Gustuff checks for antivirus software contained in a predefined list.[1]

MobileT1636.004SMS MessagesSub-technique

Gustuff can intercept two-factor authentication codes transmitted via SMS.[1]

MobileT1406.002Software PackingSub-technique

Gustuff code is both obfuscated and packed with an FTT packer.[1]

MobileT1636.003Contact ListSub-technique

Gustuff can collect the contact list.[1]

MobileT1417.001KeyloggingSub-technique

Gustuff abuses accessibility features to intercept all interactions between a user and the device.[1]

MobileT1422System Network Configuration Discovery

Gustuff gathers the device IMEI to send to the command and control server.[1]

MobileT1644Out of Band Data

Gustuff can use SMS for command and control from a defined admin phone number.[1]

MobileT1437.001Web ProtocolsSub-technique

Gustuff communicates with the command and control server using HTTP requests.[1]

MobileT1426System Information Discovery

Gustuff gathers information about the device, including the default SMS application, if SafetyNet is enabled, the battery level, the operating system version, and if the malware has elevated permissions.[1]

MobileT1417.002GUI Input CaptureSub-technique

Gustuff uses WebView overlays to prompt the user for their device unlock code, as well as banking and cryptocurrency application credentials. Gustuff can also send push notifications pretending to be from a bank, triggering a phishing overlay.[1]CitationGroup IB Gustuff Mar 2019

MobileT1628.001Suppress Application IconSub-technique

Gustuff hides its icon after installation.CitationGroup IB Gustuff Mar 2019

MobileT1629.001Prevent Application RemovalSub-technique

Gustuff may prevent application removal by abusing Android’s ` performGlobalAction(int)` API call.

MobileT1516Input Injection

Gustuff injects the global action `GLOBAL_ACTION_BACK` to mimic pressing the back button to close the application if a call to an open antivirus application is detected.[1]

Relationship explorer

All related ATT&CK context

uses · TechniqueT1406: Obfuscated Files or InformationMobileuses · TechniqueT1533: Data from Local SystemMobileuses · TechniqueT1418.001: Security Software DiscoveryMobileuses · TechniqueT1636.004: SMS MessagesMobileuses · TechniqueT1406.002: Software PackingMobileuses · TechniqueT1636.003: Contact ListMobileuses · TechniqueT1417.001: KeyloggingMobileuses · TechniqueT1422: System Network Configuration DiscoveryMobileuses · TechniqueT1644: Out of Band DataMobileuses · TechniqueT1437.001: Web ProtocolsMobileuses · TechniqueT1426: System Information DiscoveryMobileuses · TechniqueT1417.002: GUI Input CaptureMobileuses · TechniqueT1628.001: Suppress Application IconMobileuses · TechniqueT1629.001: Prevent Application RemovalMobileuses · TechniqueT1516: Input InjectionMobile
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
1.0
Created
Modified
Raw hash
1381fb872a4b6ba6...
Imported snapshots across ATT&CK releases(2)
ReleaseBundle importedObject versionModifiedStatusRaw hash
19.21.0Current bundle1381fb872a4b…
19.11.0Older bundle1381fb872a4b…
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]
    Talos Gustuff Apr 2019

    Vitor Ventura. (2019, April 9). Gustuff banking botnet targets Australia . Retrieved September 3, 2019.

    Open source URL
  2. [2]
    mitre-attackS0406
    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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