Brosafe
Overview
Executive Summary
BroSafe is a deceptive adware family and Potentially Unwanted Program (PUP) that masquerades as a legitimate security or system optimization tool. While claiming to enhance browsing safety, its true objective is to monetize the user's system through aggressive and intrusive advertising.Technical Characteristics
BroSafe exploits the user's desire for improved cybersecurity by presenting itself as a "safe browsing" extension or system utility. It is commonly distributed through deceptive pop-up warnings on low-reputation websites or bundled with third-party software installers. Once active, BroSafe fails to provide its advertised security benefits. Instead, it injects tracking cookies, monitors web traffic, and overlays excessive advertisements on legitimate websites. The adware frequently communicates with an array of affiliate networks, downloading new ad payloads and reporting on user interaction metrics. BroSafe is known for its aggressive persistence; it often creates scheduled tasks and registry run keys to ensure it restarts automatically, and it may actively resist uninstallation attempts by hiding its core components deep within the Windows AppData directory.Risk Assessment
The primary risk associated with BroSafe is the degradation of system performance and the severe compromise of user privacy. By acting as a man-in-the-browser, BroSafe can intercept sensitive information. Furthermore, the ads it serves are often poorly vetted, leading to secondary infections if a user interacts with malicious sponsored content.Mitigation Strategies
- Endpoint Protection: Utilize comprehensive EPP/EDR solutions configured to detect and block Potentially Unwanted Programs (PUPs) automatically.
- Application Control: Restrict administrative privileges to prevent standard users from installing unverified software or browser extensions.
- System Remediation: Remove BroSafe via the Windows Control Panel, delete associated scheduled tasks using `schtasks`, and clear all browser caches and cookies.
Known aliases
Threat reports may refer to this family under multiple names:
MITRE ATT&CK Techniques
This family has been observed using the following ATT&CK techniques: T1566.002 T1036 T1547.001
Tactical Mitigations
Based on the techniques used by this family, consider the following defensive strategies:
- T1036: Monitor for executable files running from unusual paths or with deceptive names. Use EDR to detect process masquerading.
- T1566.002: Inspect email links for known malicious domains and use link-rewriting services for time-of-click analysis.
Generated Detections (Boilerplate)
These YARA and Sigma rules are auto-generated based on the family name and aliases. They must be heavily tuned before deployment in a production environment.
YARA Rule
rule MALWARE_WIN_BROSAFE {
meta:
description = "Detects Brosafe (advanced_threat)"
author = "SystemHelpdesk Boilerplate Generator"
date = "2026-07-06"
strings:
$s1 = "brosafe" ascii wide nocase
$s2 = "pup.brosafe" ascii wide nocase
$s3 = "adware.brosafe" ascii wide nocase
$s4 = "brosafe adware" ascii wide nocase
condition:
uint16(0) == 0x5a4d and any of them
}Sigma Rule
title: Suspicious Brosafe Activity
id: 2dca6e6b09c7ae56c0f8c94c27f73487
status: experimental
description: Detects generic indicators of the brosafe malware family.
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith:
- '\cmd.exe'
- '\powershell.exe'
CommandLine|contains:
- "*brosafe*"
- "*pup.brosafe*"
- "*adware.brosafe*"
- "*brosafe adware*"
condition: selection
level: mediumReferences & External Analysis
- Search "brosafe" on VirusTotal (External Analysis)
Frequently Asked Questions
How do I remove the Brosafe Advanced_Threat from Windows?
Manual removal of Brosafe 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 Brosafe a virus or a Advanced_Threat?
Brosafe is classified as a Advanced_Threat. Unlike traditional viruses that infect files, modern malware like Brosafe typically operates as a standalone payload designed to compromise systems, steal data, or deploy secondary stage implants.
What are the main symptoms of a Brosafe infection?
Symptoms of Brosafe 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.
Related Families (Category: advanced_threat)
Explore other malware families in the same category:
Protect Your Network Against Advanced_Threats
Want to prevent Brosafe and similar threats from compromising your organization? Read our comprehensive defensive guide: Suspect an Infection? What to do.
Machine-readable
Get this profile as JSON: https://jordanricky1604-ship-it.github.io/malware-families-catalog/api/brosafe.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.