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

rafael · firefox · v1.0

Risk Assessment

Analyzed
30.81
out of 100
LOW

19 security findings detected across all analyzers

Firefox extension requesting 1 permission

Severity Breakdown

0
Critical
2
High
17
Medium
0
Low
0
Info

Finding Categories

2
Malware Signatures
17
IoC Indicators

YARA Rules Matched

1 rule(2 hits)
postinstall file download

Requested Permissions

1 permission
*://*.www.nexusmods.com/skyrimspecialedition/mods/*
Low

Detailed Findings

2 total

YARA Rule Matches

1 rule

Indicators of Compromise

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

URLs
4
Domains
11
Strings
17

All Indicators · 17

Domain
detected Domain: signingca1.addons.mozilla.org

XIOC detected Domain: signingca1.addons.mozilla.org

extracted_from_files

URL
detected URL: https://github.com/mdn/webextensions-examples/tree/master/borderify

XIOC detected URL: https://github.com/mdn/webextensions-examples/tree/master/borderify

extracted_from_files

Hash
detected MD5 Hash: b72c1924ec9f319e94532722aa1bd741

XIOC detected MD5 Hash: b72c1924ec9f319e94532722aa1bd741

extracted_from_files

Domain
detected Domain: developer.mozilla.org

XIOC detected Domain: developer.mozilla.org

extracted_from_files

Domain
detected Domain: github.com

XIOC detected Domain: github.com

extracted_from_files

Domain
detected Domain: mozilla.org

XIOC detected Domain: mozilla.org

extracted_from_files

Other
detected Email: [email protected]

XIOC detected Email: [email protected]

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: https://www.nexusmods.com/skyrimspecialedition/mods/36642?tab=files&file_id=143202&nmm=1

XIOC detected URL: https://www.nexusmods.com/skyrimspecialedition/mods/36642?tab=files&file_id=143202&nmm=1

extracted_from_files

URL
detected URL: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Examples#borderify

XIOC detected URL: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Examples#borderify

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: te79a03aa35245c0d26404ff545e63a6e.b72c1924ec9f319e94532722aa1bd741.addons.mozilla.org

XIOC detected Domain: te79a03aa35245c0d26404ff545e63a6e.b72c1924ec9f319e94532722aa1bd741.addons.mozilla.org

extracted_from_files

Domain
detected Domain: www.nexusmods.com

XIOC detected Domain: www.nexusmods.com

extracted_from_files

Domain
detected Domain: window.open

XIOC detected Domain: window.open

extracted_from_files

Domain
detected Domain: button.click

XIOC detected Domain: button.click

extracted_from_files

Security Analysis Summary

Security Analysis Overview

This extension is a Firefox Add-ons extension published by rafael. Version 1.0 has been analyzed by the Risky Plugins security platform, receiving a risk score of 30.81/100 (LOW risk) based on 19 security findings.

Risk Assessment

This extension presents low security risk. Some minor findings were detected, but nothing that would prevent typical usage. Reviewing the detailed findings below is recommended before use in sensitive environments.

Findings Breakdown

  • High: 2 finding(s)
  • Medium: 17 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

This extension is published by rafael on the Firefox Add-ons marketplace. The extension has approximately 4 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