S1103: FlixOnline
FlixOnline is an Android malware, first detected in early 2021, believed to target users of WhatsApp. FlixOnline primarily spreads via automatic replies to a device’s incoming WhatsApp messages.[1]
Security context for executives and security teams
S1103: FlixOnline describes [FlixOnline](https://attack.mitre.org/software/S1103) is an Android malware, first detected in early 2021, believed to target users of WhatsApp. [FlixOnline](https://attack.mitre.org/software/S1103) primarily spreads via automatic replies to a device’s incoming WhatsApp messages.(Citation: checkpoint_flixonline_0421)
Executive priority
S1103: FlixOnline 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 S1103: FlixOnline 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 S1103: FlixOnline 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.
FlixOnline
FlixOnline is an Android malware, first detected in early 2021, believed to target users of WhatsApp. FlixOnline primarily spreads via automatic replies to a device’s incoming WhatsApp messages.[1]
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 | T1624.001 | Broadcast ReceiversSub-technique | FlixOnline may use the `BOOT_COMPLETED` action to trigger further scripts on boot.[1] |
| Mobile | T1409 | Stored Application Data | FlixOnline can steal data from a user’s WhatsApp account(s).[1] |
| Mobile | T1417.002 | GUI Input CaptureSub-technique | FlixOnline requests overlay permissions, which can allow it to create fake Login screens for other apps.[1] |
| Mobile | T1628.001 | Suppress Application IconSub-technique | FlixOnline can hide its application icon.[1] |
| Mobile | T1643 | Generate Traffic from Victim | FlixOnline can automatically send replies to a user’s incoming WhatsApp messages.[1] |
| Mobile | T1517 | Access Notifications | FlixOnline requests access to the `NotificationListenerService`, which can allow it to manipulate a device's notifications.[1] |
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(2)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.2 | 1.0 | Current bundle | ff99d48f5e12… | ||
| 19.1 | 1.0 | Older bundle | ff99d48f5e12… |
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]checkpoint_flixonline_0421
Aviran Hazum, Bodgan Melnykov, Israel Wenik. (2021, April 7). New Wormable Android Malware Spreads by Creating Auto-Replies to Messages in WhatsApp. Retrieved January 26, 2024.
Open source URL - [2]mitre-attackS1103Open source URL
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