Shopro
Table of Contents
Overview
Adware:Win32/Shopro is an intrusive Potentially Unwanted Program (PUP) designed to forcibly alter a user's web browsing experience. It manipulates browser settings to redirect search queries, injects unwanted advertisements into webpages, and tracks user browsing behavior to generate illicit Pay-Per-Click (PPC) revenue for its creators.
Understanding Shopro
To an end-user, Shopro manifests as a sudden, unwanted change to their browser's homepage, new tab page, and the appearance of unremovable toolbars or persistent pop-up ads. For a security team, it represents a breakdown in endpoint hygiene and a potential vector for more serious infections via malvertising (malicious advertisements).
Execution and Hijacking Mechanics
Shopro is typically distributed via deceptive software bundles, fake software updates, or malicious browser extensions downloaded from third-party sites (`T1189`). Upon execution, it modifies the Windows Registry (`T1112`) and browser configuration files to enforce its settings (`T1562.001`). It installs persistent browser extensions or Browser Helper Objects (BHOs) (`T1176`) to monitor searches and ensure the hijacking cannot be easily reversed by the user. These extensions locally intercept web traffic to inject sponsored links directly into the DOM of legitimate websites.
Indicators of Compromise & Impact
The impact is a severely degraded user experience, potential privacy violations (tracking of search queries), and exposure to potentially malicious ads. Host-based IoCs include EDR alerts for modifications to browser shortcut properties, unexpected additions to browser extension directories, or anomalous BHO registrations in the Registry. Network IoCs include DNS queries resolving to adware tracking infrastructure and redirected search traffic containing tracking parameters.
MITRE ATT&CK Techniques
Observed techniques used by this family, mapped to our technical analysis hubs and the official MITRE ATT&CK framework:
| Technique | Name | Tactic | Official Spec |
|---|---|---|---|
T1176 | Browser Extensions (Installing malicious toolbars/BHOs) | Persistence | ATT&CK ↗ |
T1112 | Modify Registry (Changing default search/homepage keys) | Defense Evasion | ATT&CK ↗ |
T1562.001 | Impair Defenses: Disable or Modify Tools (Browser hijacking) | Defense Evasion | ATT&CK ↗ |
T1189 | Drive-by Compromise | Initial Access | ATT&CK ↗ |
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-RVM | Registry Value Modification Analysis | Detect | T1112 | Log Windows Event ID 4657 to monitor unauthorized modifications to system configuration and security settings. |
D3-BEA | Browser Extension Allowlisting | Harden | T1176 | Deploy enterprise browser policies via GPO or Intune to block unauthorized side-loaded extensions and add-ons. |
D3-RBI | Remote Browser Isolation | Isolate | T1189 | Execute untrusted web browsing sessions in disposable cloud containers to isolate drive-by exploits from local endpoints. |
D3-STA | Security Tool Anti-Tamper Enforcement | Harden | T1562.001 | Block unauthorized modification of antivirus registry flags and prevent stopping security agent services. |
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_SHOPRO_T1_ARTIFACT {
meta:
description = "Tier 1 Primitive Artifact: Raw string matches for Shopro"
tier = "T1 - Primitive Artifact"
confidence = "Low-Medium (Fast Triage)"
author = "SystemHelpdesk Threat Research Desk"
date = "2026-10-14"
strings:
$s1 = "shopro" 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 - Shopro (Advanced Threat) Execution & Triage
id: 324cc16c-15e8-5490-9526-ce848caffb5e
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
with the Shopro malware family. Detects proxy execution, reflective DLL loading,
and remote command injection associated with modular enterprise backdoors.
references:
- https://malware-families-catalog.systemhelpdesk.com/families/shopro
- https://malware-families-catalog.systemhelpdesk.com/defensive/backdoor-rat-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.advanced-threat
- author.ricky-jordan
- source.systemhelpdesk-mfc
- attack.t1176
- attack.t1189
- attack.t1562_001
- attack.t1112
logsource:
category: process_creation
product: windows
detection:
selection_process:
Image|endswith:
- \powershell.exe
- \cmd.exe
- \rundll32.exe
- \regsvr32.exe
CommandLine|contains:
- DownloadString
- IEX(
- '/s /n /u /i:'
- sc create
- start-process
condition: selection_process
falsepositives:
- Legitimate enterprise administrative scripts during approved change windows
- Authorized IT software deployment utilities and backup management agents
level: highTier 3 Attribution Fingerprint Rule (High Fidelity)
Deep signature matching distinctive operational fingerprints and payload characteristics.
rule MALWARE_WIN_SHOPRO_T3_ATTRIBUTION {
meta:
description = "Tier 3 Attribution Fingerprint: Heuristic detection for Shopro 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 = "shopro" 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.
- Remove any unknown or recently installed browser extensions or toolbars from Chrome, Edge, Internet Explorer, and Firefox.
- Use the Windows Control Panel to thoroughly uninstall explicitly named adware programs (like Shopro or associated bundled software).
- Reset all installed web browsers to their default settings to clear out hijacked homepages, search engines, and modified preferences.
- Run a thorough scan with an enterprise-grade Adware/PUA removal tool to clean up deep registry persistence mechanisms.
What to Avoid
Common mistakes during response to this family that can destroy evidence, spread the infection, or worsen recovery.
- Do not simply change the homepage back manually; if the adware extension or BHO is still present, the changes will revert on the next launch.
- Avoid allowing users to download software from unverified third-party portals, as this is the primary vector for browser hijackers.
References & External Analysis
- Search "shopro" on VirusTotal (External Analysis)
- Search "shopro" on Any.Run (Sandbox Sandbox)
- Search "shopro" on MalwareBazaar (Malware Samples)
Frequently Asked Questions
What is Shopro and what threat category does it belong to?
Shopro is classified as a Advanced Threat. Documented across security telemetry, it is engineered to execute unauthorized operations, establish persistent footholds on target endpoints, and facilitate malicious campaigns targeting enterprise and individual environments.
How does Shopro establish persistence and evade defensive controls?
Shopro typically establishes persistence through registry run keys, scheduled tasks, or service installations, while evading signature-based antivirus solutions through code obfuscation, memory injection, or anti-analysis sandbox checks.
What are the essential incident response steps for mitigating a Shopro compromise?
Security teams responding to Shopro should immediately isolate affected endpoints from the network, perform memory triage to capture volatile forensic artifacts, audit registry and startup persistence mechanisms, revoke exposed user credentials, and restore systems from verified, clean backups.
What lateral movement and credential access tactics does Shopro leverage in enterprise intrusions?
Shopro frequently utilizes privileged account harvesting techniques such as LSASS memory dumping, Kerberoasting, and token impersonation to escalate privileges. Once administrative credentials are acquired, it pivots across the victim network utilizing living-off-the-land binaries (LOLBins) such as WMI, PowerShell remoting, and PsExec, or abuses remote desktop protocols (RDP) to reach critical internal repositories and domain controllers.
How does Shopro maintain covert communications and evade perimeter network monitoring?
Shopro often relies on multi-stage command and control (C2) architectures utilizing encrypted protocols over standard web ports (HTTPS/443 or DNS tunneling) to blend in with legitimate enterprise network traffic. Many variants incorporate proxy networks, domain fronting, or cloud services (such as Microsoft Graph API, Google Drive, or Telegram) to masquerade C2 channels, bypassing traditional signature-based egress filtering.
How do I remove the Shopro Advanced_Threat from Windows?
Manual removal of Shopro 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 Shopro a virus or a Advanced_Threat?
Shopro is classified as a Advanced_Threat. Unlike traditional viruses that infect files, modern malware like Shopro typically operates as a standalone payload designed to compromise systems, steal data, or deploy secondary stage implants.
What are the main symptoms of a Shopro infection?
Symptoms of Shopro 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 Advanced_Threats
Want to prevent Shopro and similar threats from compromising your organization? Read our comprehensive defensive guide: Think You've Been Hacked? What To Do First.
📣 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/shopro.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.