Shyape
Table of Contents
Overview
Shyape (cataloged across security vendors and threat intelligence databases under signatures including Adware:Win32/Shyape, Trojan.scar/shyape, and PUA:Win32/Shyape) is an invasive adware and potentially unwanted program (PUA) family active since 2016. Infiltrating endpoints through deceptive freeware installers, pirated media players, and infected removable USB drives, Shyape hooks local browser processes and helper objects to inject persistent advertisements and affiliate redirects into victim web sessions. Furthermore, advanced variants feature code injection capabilities that inject threads into legitimate Windows browser processes to evade local antimalware detection and ensure unhindered telemetry collection.
Known aliases
Threat reports may refer to this family under multiple names:
Family Pedigree & Lineage
Malware authors regularly fork and iterate upon existing codebases. Observed upstream lineage and downstream variants for this family include:
Known Derivatives & Downstream Variants: Adware:Win32/Shyape.A · Trojan.Scar/Shyape
MITRE ATT&CK Techniques
This family has been observed using the following ATT&CK techniques: T1185 · T1055 · T1091 · T1547.001 · T1071.001 · T1082
Tactical Mitigations
Based on the techniques used by this family, consider the following defensive strategies:
- T1071.001: Implement web filtering and SSL/TLS inspection to detect malicious command and control (C2) traffic hiding in HTTP/HTTPS.
- T1185: Enforce strong MFA and use browser isolation or hardened browsers for sensitive financial or administrative portals to defeat session hijacking.
MITRE D3FEND™ Defensive Countermeasures
Defensive techniques mapped to counter the offensive tradecraft observed in this family (via the MITRE D3FEND matrix):
| D3FEND ID | Countermeasure Name | Tactic | Countered ATT&CK | Defensive Guidance |
|---|---|---|---|---|
D3-PIAD | Process Injection Analysis & Detection | Detect | T1055 | Monitor cross-process thread creation (CreateRemoteThread) and asynchronous procedure calls (QueueUserAPC). |
D3-WAF | Web Content Filtering & Inspection | Filter | T1071.001 | Block newly registered domains (NRDs) and inspect HTTP Host and URI headers for known C2 profiles. |
D3-SDA | System Discovery Analysis | Detect | T1082 | Alert on rapid enumerations of systeminfo, hostname, and registry hardware trees in short intervals. |
D3-RMC | Removable Media Access Control | Harden | T1091 | Enforce Group Policy settings disabling Windows autorun and block execution permissions on removable USB storage media. |
D3-MitBA | Man-in-the-Browser Analysis | Detect | T1185 | Deploy browser extension whitelisting and hardware-backed session binding to prevent rogue DOM and socket injection. |
D3-RPM | Registry Persistence Monitoring | Detect | T1547.001 | Audit and restrict write privileges to user and machine-level Registry Run/RunOnce keys using Endpoint Privilege Management. |
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:
Tier 1 Primitive Artifact Rule (Fast Triage)
Matches raw strings and file markers. Vulnerable to binary repacking and simple obfuscation.
rule MALWARE_WIN_SHYAPE_T1_ARTIFACT {
meta:
description = "Tier 1 Primitive Artifact: Raw string matches for Shyape"
tier = "T1 - Primitive Artifact"
confidence = "Low-Medium (Fast Triage)"
author = "SystemHelpdesk Threat Research Desk"
date = "2026-10-14"
strings:
$s1 = "shyape" ascii wide nocase
$s2 = "adware:win32/shyape" ascii wide nocase
$s3 = "trojan.scar/shyape" ascii wide nocase
$s4 = "pua:win32/shyape" ascii wide nocase
$s5 = "adware.win32.shyape" ascii wide nocase
$s6 = "win32/shyape" ascii wide nocase
condition:
uint16(0) == 0x5a4d and any of them
}Tier 2 Behavioral Context Rule (Process Chains & Sigma)
Tracks parent-child process anomalies and suspicious scripting telemetry. Resilient against file renames.
title: SystemHelpDesk Detection - Shyape (Adware) Execution & Triage
id: 3882e88d-feb2-5fd9-bfeb-ff391f3a8610
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
with the Shyape 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/shyape
- https://malware-families-catalog.systemhelpdesk.com/defensive/ransomware-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.adware
- author.ricky-jordan
- source.systemhelpdesk-mfc
- attack.t1185
- attack.t1055
- attack.t1091
- attack.t1547_001
- attack.t1071_001
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: mediumTier 3 Attribution Fingerprint Rule (High Fidelity)
Deep signature matching distinctive operational fingerprints and payload characteristics.
rule MALWARE_WIN_SHYAPE_T3_ATTRIBUTION {
meta:
description = "Tier 3 Attribution Fingerprint: Heuristic detection for Shyape 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 = "shyape" 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
}References & External Analysis
- Microsoft Defender Threat Encyclopedia - Adware:Win32/Shyape
- Search "shyape" on VirusTotal (External Analysis)
- Search "shyape" on Any.Run (Sandbox Sandbox)
- Search "shyape" on MalwareBazaar (Malware Samples)
Frequently Asked Questions
What is Adware:Win32/Shyape?
Shyape is an invasive adware family that hooks browser processes to inject unwanted advertisements and redirect search traffic.
How does Shyape evade antivirus scanners?
It injects malicious threads into legitimate browser helper processes and uses stealthy startup registry hooks.
Can Shyape spread through USB flash drives?
Yes, telemetry indicates certain variants propagate across removable storage drives by creating disguised shortcuts.
What impact does Shyape have on computer performance?
It causes high CPU utilization, browser crashes, slow page load times, and intrusive pop-up banners.
How can users remove Shyape from their endpoints?
Run a Microsoft Defender Full Scan, remove rogue browser extensions, and restore default browser settings.
How do I remove the Shyape Adware from Windows?
Manual removal of Shyape is highly discouraged as it may leave persistence mechanisms intact. We recommend disconnecting the device from the internet and utilizing a professional incident response service or enterprise-grade EDR software to conduct a full forensic sweep.
Is Shyape a virus or a Adware?
Shyape is classified as a Adware. Unlike traditional viruses that infect files, modern malware like Shyape typically operates as a standalone payload designed to compromise systems, steal data, or deploy secondary stage implants.
What are the main symptoms of a Shyape infection?
Symptoms of Shyape can include unexpected system slowness, unauthorized outbound network traffic to unknown IP addresses, disabled security software, and suspicious background processes running from AppData or Temp directories.
Protect Your Network Against Adwares
Want to prevent Shyape and similar threats from compromising your organization? Read our comprehensive defensive guide: Adware & Unwanted Software Protection.
📣 Threat Intel Correction or Update?
Notice an outdated IOC, unlisted alias, or disputed attribution? Threat researchers are invited to propose an update on GitHub or contact the SystemHelpDesk research desk. All community revisions are credited in our public CHANGELOG.
Machine-readable
Get this profile as JSON: https://malware-families-catalog.systemhelpdesk.com/api/shyape.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.