S0494: Zen
MITRE ATT&CK S0494: Zen Malware details for Android, with detection guidance, relationships and mapped CVEs.
Security context for executives and security teams
Zen is an Android malware family documented by ATT&CK with behaviors that matter because they cross several hard-to-monitor mobile risk areas: privilege escalation, hidden or downloaded code, abuse of accessibility-style input, interference with security tools, process manipulation, and outbound traffic generation. For leaders, the practical question is not whether Zen itself is present, but whether the mobile security program can prove it would notice these classes of behavior on managed Android devices.
Executive priority
Prioritize Zen as a mobile control-validation case for Android fleets where employee devices, privileged business apps, SMS-capable devices, or regulated data are in scope. The ATT&CK relationships point to risks that can undermine basic assurance: malware may seek elevated privileges, evade static app review, disable or modify defensive tools, and generate traffic from the victim device. Executives should ask whether mobile device management, app vetting, vulnerability management, and SOC intake produce auditable evidence for these behaviors rather than relying only on app reputation or installation controls.
Technical view
ATT&CK provides no official detection text for Zen, so SOC and IR teams should validate coverage through the related Android techniques: T1404 Exploitation for Privilege Escalation, T1406 Obfuscated Files or Information, T1407 Download New Code at Runtime, T1516 Input Injection, T1625.001 System Runtime API Hijacking, T1629.003 Disable or Modify Tools, T1631.001 Ptrace System Calls, and T1643 Generate Traffic from Victim. Practical validation should focus on whether managed Android telemetry can show suspicious privilege changes, dynamic code loading after installation, abuse of accessibility or device administrator capabilities, attempts to modify security tooling or protected system behavior, ptrace-like process manipulation indicators where available, and unusual SMS or web traffic generation.
Likely telemetry
- Android application inventory and package metadata from managed devices
- Mobile device management or enterprise mobility management compliance events
- Mobile threat defense alerts, if deployed
- Android permission grants, especially sensitive permissions such as SMS, accessibility, device administrator, and runtime permissions
- App installation, update, and sideloading records
Detection direction
- Because MITRE provides no Zen-specific detection guidance, use the related techniques to build behavioral coverage tests rather than relying on a family-name signature alone.
- Validate whether app-vetting and runtime monitoring can detect code downloaded after installation, since T1407 can bypass purely static pre-publication or pre-installation checks.
- Tune for context around accessibility API and device administrator abuse; legitimate accessibility and administrative apps can create false positives, so baselining approved apps is important.
- Correlate privilege-escalation indicators with device patch level, rooting status, security-tool tamper events, and unexpected permission expansion.
- Review blind spots in BYOD, unmanaged Android devices, encrypted mobile traffic, limited SMS visibility, and environments where mobile telemetry is not forwarded to the SOC.
Mitigation priorities
- Maintain Android OS and application patching to reduce exposure to privilege-escalation vulnerabilities referenced by T1404.
- Restrict installation sources and enforce mobile app governance for managed devices, including review of apps that request sensitive permissions.
- Apply least-privilege mobile policy for SMS, accessibility services, and device administrator capabilities, with documented exceptions for approved business use.
- Monitor and protect mobile security tooling from disablement or modification, including compliance checks for agent health where such tooling is deployed.
- Strengthen mobile incident response procedures so teams can preserve device state, app inventory, permission state, and network/SMS evidence before wiping or reimaging.
Additional notes and limits
The strongest decision value in this ATT&CK object comes from the relationships, not the short malware description. Zen is identified as Android malware first seen in 2013, and the listed techniques describe behavior defenders should use for mobile detection engineering and control validation. Treat this as a prompt to test Android visibility across privilege escalation, runtime code, obfuscation, UI/input abuse, security-tool tampering, process manipulation, and outbound traffic generation.
The supplied ATT&CK fields do not include tactics, aliases, labels, official detection logic, indicators, affected versions, campaign context, or attribution. This summary therefore does not claim active exploitation, customer exposure, guaranteed detection, or current prevalence. Local device telemetry, mobile management coverage, and legal constraints around mobile/SMS monitoring are required to determine actual risk and coverage.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Zen
No official description is available in the imported ATT&CK source object.
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.
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.
| Domain | ID | Name | Relationship / procedure |
|---|---|---|---|
| Mobile | T1625.001 | System Runtime API HijackingSub-technique | This object uses System Runtime API Hijacking. |
| Mobile | T1404 | Exploitation for Privilege Escalation | This object uses Exploitation for Privilege Escalation. |
| Mobile | T1631.001 | Ptrace System CallsSub-technique | This object uses Ptrace System Calls. |
| Mobile | T1407 | Download New Code at Runtime | This object uses Download New Code at Runtime. |
| Mobile | T1406 | Obfuscated Files or Information | This object uses Obfuscated Files or Information. |
| Mobile | T1629.003 | Disable or Modify ToolsSub-technique | This object uses Disable or Modify Tools. |
| Mobile | T1516 | Input Injection | This object uses Input Injection. |
| Mobile | T1643 | Generate Traffic from Victim | This object uses Generate Traffic from Victim. |
All related ATT&CK context
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.
Imported snapshots across ATT&CK releases(1)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.1 | 1.0 | Current bundle | 7083e5e76f16… |
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.
External references and citations
MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.
- [1]Google Security Zen
Siewierski, L. (2019, January 11). PHA Family Highlights: Zen and its cousins . Retrieved July 27, 2020.
Open source URL - [2]Google Security Zen
Siewierski, L. (2019, January 11). PHA Family Highlights: Zen and its cousins . Retrieved July 27, 2020.
Open source URL - [3]mitre-attackS0494Open source URL
- [4]mitre-attackS0494Open source URL
- [5]Google Security Zen
Siewierski, L. (2019, January 11). PHA Family Highlights: Zen and its cousins . Retrieved July 27, 2020.
Open source URL - [6]Google Security Zen
Siewierski, L. (2019, January 11). PHA Family Highlights: Zen and its cousins . Retrieved July 27, 2020.
Open source URL - [7]Google Security Zen
Siewierski, L. (2019, January 11). PHA Family Highlights: Zen and its cousins . Retrieved July 27, 2020.
Open source URL - [8]Google Security Zen
Siewierski, L. (2019, January 11). PHA Family Highlights: Zen and its cousins . Retrieved July 27, 2020.
Open source URL - [9]Google Security Zen
Siewierski, L. (2019, January 11). PHA Family Highlights: Zen and its cousins . Retrieved July 27, 2020.
Open source URL - [10]Google Security Zen
Siewierski, L. (2019, January 11). PHA Family Highlights: Zen and its cousins . Retrieved July 27, 2020.
Open source URL - [11]Google Security Zen
Siewierski, L. (2019, January 11). PHA Family Highlights: Zen and its cousins . Retrieved July 27, 2020.
Open source URL - [12]Google Security Zen
Siewierski, L. (2019, January 11). PHA Family Highlights: Zen and its cousins . Retrieved July 27, 2020.
Open source URL
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