Is "Filters" on Firefox Add-ons Safe to Install?

weaving · firefox · v0.0.1

Adjust brightness, contrast, saturation, warmth for a better reading experience. Usage: Right-click anywhere on the page Click "Filters" Adjust the levels Close with top-left button When you set the levels, they are saved for the current website. Click the top-middle button to reset levels for the current website. Click the top-right button to apply levels to all websites. Website levels take precedence over global levels.

Risk Assessment

Analyzed
47.19
out of 100
MEDIUM

16 security findings detected across all analyzers

Firefox extension requesting 4 permissions

Severity Breakdown

0
Critical
3
High
13
Medium
0
Low
0
Info

Finding Categories

3
Malware Signatures
12
IoC Indicators

YARA Rules Matched

3 rules
postinstall file manipulation postinstall environment access postinstall network communication

Requested Permissions

4 permissions
<all_urls>

Access and modify data on every website you visit

Dangerous
tabs
Medium
storage
Low
contextMenus
Low

About This Extension

Adjust brightness, contrast, saturation, warmth for a better reading experience. <b>Usage:</b> <ol><li>Right-click anywhere on the page</li><li>Click "Filters"</li><li>Adjust the levels</li><li>Close with top-left button</li></ol> When you set the levels, they are saved for the current website. Click the top-middle button to reset levels for the current website. Click the top-right button to apply levels to all websites. Website levels take precedence over global levels.

Detailed Findings

4 total

YARA Rule Matches

3 rules

Indicators of Compromise

Network indicators, suspicious strings, and potential IoCs extracted during analysis

URLs
2
Domains
9
Strings
12

All Indicators · 12

Domain
detected Domain: signingca1.addons.mozilla.org

XIOC detected Domain: signingca1.addons.mozilla.org

extracted_from_files

Domain
detected Domain: document.documentelement.style

XIOC detected Domain: document.documentelement.style

extracted_from_files

URL
detected URL: http://addons.mozilla.org/ca/crl.pem0N

XIOC detected URL: http://addons.mozilla.org/ca/crl.pem0N

extracted_from_files

URL
detected URL: http://www.w3.org/2000/svg

XIOC detected URL: http://www.w3.org/2000/svg

extracted_from_files

Hash
detected MD5 Hash: bf70f6f95ead093b307c7cb07f08efe1

XIOC detected MD5 Hash: bf70f6f95ead093b307c7cb07f08efe1

extracted_from_files

Domain
detected Domain: mozilla.com

XIOC detected Domain: mozilla.com

extracted_from_files

Domain
detected Domain: addons.mozilla.org

XIOC detected Domain: addons.mozilla.org

extracted_from_files

Domain
detected Domain: content-signature.mozilla.org

XIOC detected Domain: content-signature.mozilla.org

extracted_from_files

Domain
detected Domain: tf7ed3d2a391ebd4ae3315b459c4030ef.bf70f6f95ead093b307c7cb07f08efe1.addons.mozilla.org

XIOC detected Domain: tf7ed3d2a391ebd4ae3315b459c4030ef.bf70f6f95ead093b307c7cb07f08efe1.addons.mozilla.org

extracted_from_files

Domain
detected Domain: tab.id

XIOC detected Domain: tab.id

extracted_from_files

Domain
detected Domain: www.w3.org

XIOC detected Domain: www.w3.org

extracted_from_files

Domain
detected Domain: res.global

XIOC detected Domain: res.global

extracted_from_files

Security Analysis Summary

Security Analysis Overview

Filters is a Firefox Add-ons extension published by weaving. Version 0.0.1 has been analyzed by the Risky Plugins security platform, receiving a risk score of 47.19/100 (MEDIUM risk) based on 16 security findings.

Risk Assessment

This extension presents moderate security risk. Several findings were detected that may warrant attention. Users should carefully review the permissions and findings before installation.

Findings Breakdown

  • High: 3 finding(s)
  • Medium: 13 finding(s)

What Was Analyzed

The security assessment covers multiple analysis categories:

  • Malware Detection: YARA rule matching against 2,400+ malware signatures
  • Secret Detection: Scanning for exposed API keys, tokens, and credentials
  • Static Analysis: Code-level security analysis for common vulnerability patterns
  • Network Analysis: Detection of suspicious network communications and endpoints
  • Obfuscation Detection: Identification of code obfuscation techniques

Developer Information

Filters is published by weaving on the Firefox Add-ons marketplace. The extension has approximately 23 users.

Recommendation

Exercise caution with this extension. Review the detailed findings and ensure the requested permissions align with the extension's stated functionality before installation.

Frequently Asked Questions