Taptrap

Overview

Executive Summary

Infection Vector and Technical Capabilities

• Permission Abuse: During installation, the app requests a vast array of excessive permissions that are entirely unrelated to its purported function, including access to SMS, Contacts, Location, and the critical `BIND_ACCESSIBILITY_SERVICE`.
• Data Harvesting and Interception: If granted Accessibility permissions, TapTrap effectively gains full control over the device. It can read SMS messages (intercepting MFA tokens), scrape contact lists, track GPS location, and silently record phone calls.
• Ad Fraud and Overlay Attacks: The malware frequently operates a hidden web view in the background, simulating user clicks on advertisements to generate revenue (ad fraud). More severe variants utilize "Overlay Attacks," projecting a fake login screen over legitimate banking apps to steal credentials.

Threat Assessment

Remediation and Eradication

• Immediate Uninstallation (Safe Mode): If the malware prevents uninstallation (often by abusing Device Administrator privileges), the Android device must be booted into Safe Mode to disable third-party apps, allowing the malicious package to be removed.
• Credential Reset: Assume all credentials entered on the mobile device, and any accounts secured by SMS MFA tied to that phone number, are compromised.
• Mobile Device Management (MDM): In corporate environments, enforce strict MDM policies that prohibit the "sideloading" of applications from unknown sources and restrict the granting of Accessibility permissions to unvetted apps.

Known aliases

Threat reports may refer to this family under multiple names:

• AndroidOS.TapTrap
• Trojan.Android.TapTrap
• Spyware.TapTrap

MITRE ATT&CK Techniques

Observed techniques used by this family, mapped to our technical analysis hubs and the official MITRE ATT&CK framework:

MITRE D3FEND™ Defensive Countermeasures

Defensive techniques mapped to counter the offensive tradecraft observed in this family (via the MITRE D3FEND matrix):

Tiered Detection Rules (Cisco CAIRN Model)

Modern threat detection requires multi-layered rule engineering. We classify detections into three operational tiers based on signal fidelity:

rule MALWARE_WIN_TAPTRAP_T1_ARTIFACT {
    meta:
        description = "Tier 1 Primitive Artifact: Raw string matches for Taptrap"
        tier = "T1 - Primitive Artifact"
        confidence = "Low-Medium (Fast Triage)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        $s1 = "taptrap" ascii wide nocase
        $s2 = "androidos.taptrap" ascii wide nocase
        $s3 = "trojan.android.taptrap" ascii wide nocase
        $s4 = "spyware.taptrap" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

title: SystemHelpDesk Detection - Taptrap (Trojan) Execution & Triage
id: 21d1fb3a-373d-53bf-901f-f151d1f5228a
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
  with the Taptrap malware family. Detects suspicious execution from temporary user
  directories with hidden window flags and background transfer utilities.
references:
- https://malware-families-catalog.systemhelpdesk.com/families/taptrap
- https://malware-families-catalog.systemhelpdesk.com/defensive/downloader-dropper-protection
- https://malware-families-catalog.systemhelpdesk.com/
author: Ricky Jordan, Lead Threat Intelligence Analyst, SystemHelpDesk MSP
date: '2026-10-14'
modified: '2026-10-14'
tags:
- attack.trojan
- author.ricky-jordan
- source.systemhelpdesk-mfc
- attack.t1626
- attack.t1417
- attack.t1636
- attack.t1629_002
logsource:
  category: process_creation
  product: windows
detection:
  selection_process:
    Image|endswith:
    - \cmd.exe
    - \powershell.exe
    - \cscript.exe
    - \wscript.exe
    CommandLine|contains:
    - AppData\Local\Temp
    - -WindowStyle Hidden
    - /e:jscript
    - bitsadmin /transfer
  condition: selection_process
falsepositives:
- Legitimate enterprise administrative scripts during approved change windows
- Authorized IT software deployment utilities and backup management agents
level: medium

rule MALWARE_WIN_TAPTRAP_T3_ATTRIBUTION {
    meta:
        description = "Tier 3 Attribution Fingerprint: Heuristic detection for Taptrap tradecraft"
        tier = "T3 - Attribution Fingerprint"
        confidence = "High (Confirmed Family Signature)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        // Core family identifier & heuristic payload signatures
        $attrib_str = "taptrap" ascii wide nocase
        $pe_magic = "MZ" ascii
        $net_marker = "http" ascii nocase
    condition:
        uint16(0) == 0x5a4d and ($attrib_str and $net_marker) and filesize < 15MB
}

Containment & Response Steps

Ordered checklist for responders. Adapt to your environment and engage professional support for active incidents.

1. Sever network connectivity for the flagged endpoint to terminate persistent command-and-control (C2) communication channels and stop Taptrap from retrieving secondary stage payloads.
2. Capture process memory triage to detect and terminate malicious threads injected by Taptrap into legitimate system processes such as explorer.exe or svchost.exe.
3. Audit Windows Registry Run keys (HKCU\Software\Microsoft\Windows\CurrentVersion\Run) and Task Scheduler entries to locate and purge Taptrap persistence hooks.
4. Deploy updated enterprise EDR detection signatures and conduct an out-of-band endpoint scan to isolate dropped binaries and staged payloads.
5. Rotate all credentials, domain user passwords, and session cookies active on the system during the Taptrap execution timeframe.

What to Avoid

Common mistakes during response to this family that can destroy evidence, spread the infection, or worsen recovery.

1. Do not assume the incident is resolved simply because an antivirus tool removed the initial Taptrap dropper; always verify that secondary payloads and persistence hooks have been eradicated.
2. Avoid logging in with Domain Admin or privileged credentials on a machine suspected of running Taptrap until memory triage is complete.
3. Do not delay host isolation; automated lateral movement and credential dumping can occur within minutes of initial execution.

References & External Analysis

• Search "taptrap" on VirusTotal (External Analysis)
• Search "taptrap" on Any.Run (Sandbox Sandbox)
• Search "taptrap" on MalwareBazaar (Malware Samples)

Frequently Asked Questions

Related Threats (Category: Trojan)

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Machine-readable

Get this profile as JSON: https://malware-families-catalog.systemhelpdesk.com/api/taptrap.json

Ecosystem & Interactive Environments

This profile is part of the Malware Families Catalog, a public dataset of 2,899 malware families. The catalog is also published across our ecosystem: Hugging Face, Kaggle, Zenodo, Replit, StackBlitz, CodeSandbox, and CodePen.