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

sh4ttered · firefox · v1.0.1

Risk Assessment

Analyzed
39.98
out of 100
LOW

79 security findings detected across all analyzers

Firefox extension requesting 1 permission

Severity Breakdown

0
Critical
10
High
69
Medium
0
Low
0
Info

Finding Categories

10
Malware Signatures
69
IoC Indicators

YARA Rules Matched

7 rules(10 hits)
postinstall system command postinstall crypto operations postinstall file manipulation postinstall obfuscation SQLInjection postinstall network communication NoUseWeakRandom

Requested Permissions

1 permission
*://www.skuola.net/*
Low

Detailed Findings

10 total

YARA Rule Matches

7 rules

Indicators of Compromise

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

URLs
1
Domains
66
Strings
69

All Indicators · 69

Domain
detected Domain: f.remove.call

XIOC detected Domain: f.remove.call

extracted_from_files

Domain
detected Domain: jquery.org

XIOC detected Domain: jquery.org

extracted_from_files

Domain
detected Domain: e.now

XIOC detected Domain: e.now

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

Hash
detected MD5 Hash: 355168cd6497356f912ecfa65220db4f

XIOC detected MD5 Hash: 355168cd6497356f912ecfa65220db4f

extracted_from_files

Domain
detected Domain: e.top

XIOC detected Domain: e.top

extracted_from_files

Domain
detected Domain: l.style

XIOC detected Domain: l.style

extracted_from_files

Domain
detected Domain: this.name

XIOC detected Domain: this.name

extracted_from_files

Domain
detected Domain: t.name

XIOC detected Domain: t.name

extracted_from_files

Domain
detected Domain: t.top

XIOC detected Domain: t.top

extracted_from_files

Domain
detected Domain: f.top

XIOC detected Domain: f.top

extracted_from_files

Domain
detected Domain: t.top-s.top

XIOC detected Domain: t.top-s.top

extracted_from_files

Domain
detected Domain: t.click

XIOC detected Domain: t.click

extracted_from_files

Domain
detected Domain: this.target

XIOC detected Domain: this.target

extracted_from_files

Domain
detected Domain: date.now

XIOC detected Domain: date.now

extracted_from_files

Domain
detected Domain: this.off

XIOC detected Domain: this.off

extracted_from_files

Domain
detected Domain: t.events

XIOC detected Domain: t.events

extracted_from_files

Domain
detected Domain: a.id

XIOC detected Domain: a.id

extracted_from_files

Domain
detected Domain: e.style

XIOC detected Domain: e.style

extracted_from_files

Domain
detected Domain: f.teardown.call

XIOC detected Domain: f.teardown.call

extracted_from_files

Domain
detected Domain: c.predispatch.call

XIOC detected Domain: c.predispatch.call

extracted_from_files

Domain
detected Domain: e.event.handlers.call

XIOC detected Domain: e.event.handlers.call

extracted_from_files

Domain
detected Domain: u.data

XIOC detected Domain: u.data

extracted_from_files

Domain
detected Domain: o.data

XIOC detected Domain: o.data

extracted_from_files

Domain
detected Domain: c.postdispatch.call

XIOC detected Domain: c.postdispatch.call

extracted_from_files

Domain
detected Domain: e.target

XIOC detected Domain: e.target

extracted_from_files

Domain
detected Domain: he.th

XIOC detected Domain: he.th

extracted_from_files

Domain
detected Domain: he.td

XIOC detected Domain: he.td

extracted_from_files

Domain
detected Domain: v.events

XIOC detected Domain: v.events

extracted_from_files

Domain
detected Domain: f.setup.call

XIOC detected Domain: f.setup.call

extracted_from_files

Domain
detected Domain: f.add.call

XIOC detected Domain: f.add.call

extracted_from_files

Domain
detected Domain: e.event.global

XIOC detected Domain: e.event.global

extracted_from_files

Domain
detected Domain: signingca1.addons.mozilla.org

XIOC detected Domain: signingca1.addons.mozilla.org

extracted_from_files

Domain
detected Domain: se.select

XIOC detected Domain: se.select

extracted_from_files

Domain
detected Domain: e.call

XIOC detected Domain: e.call

extracted_from_files

Domain
detected Domain: e.name

XIOC detected Domain: e.name

extracted_from_files

Domain
detected Domain: r.call

XIOC detected Domain: r.call

extracted_from_files

Domain
detected Domain: t.map

XIOC detected Domain: t.map

extracted_from_files

Domain
detected Domain: o.empty.fire

XIOC detected Domain: o.empty.fire

extracted_from_files

Domain
detected Domain: this.show

XIOC detected Domain: this.show

extracted_from_files

Domain
detected Domain: x.filter.id

XIOC detected Domain: x.filter.id

extracted_from_files

Domain
detected Domain: x.find.id

XIOC detected Domain: x.find.id

extracted_from_files

Domain
detected Domain: c.call

XIOC detected Domain: c.call

extracted_from_files

Domain
detected Domain: l.call

XIOC detected Domain: l.call

extracted_from_files

Domain
detected Domain: e.id

XIOC detected Domain: e.id

extracted_from_files

Domain
detected Domain: e.next

XIOC detected Domain: e.next

extracted_from_files

Domain
detected Domain: j.call

XIOC detected Domain: j.call

extracted_from_files

Domain
detected Domain: t.call

XIOC detected Domain: t.call

extracted_from_files

Domain
detected Domain: u.call

XIOC detected Domain: u.call

extracted_from_files

Domain
detected Domain: i.call

XIOC detected Domain: i.call

extracted_from_files

Domain
detected Domain: p.call

XIOC detected Domain: p.call

extracted_from_files

Domain
detected Domain: this.map

XIOC detected Domain: this.map

extracted_from_files

Domain
detected Domain: se.support

XIOC detected Domain: se.support

extracted_from_files

Domain
detected Domain: n.top

XIOC detected Domain: n.top

extracted_from_files

Domain
detected Domain: t.flat.call

XIOC detected Domain: t.flat.call

extracted_from_files

Domain
detected Domain: a.call

XIOC detected Domain: a.call

extracted_from_files

Domain
detected Domain: o.call

XIOC detected Domain: o.call

extracted_from_files

Domain
detected Domain: s.call

XIOC detected Domain: s.call

extracted_from_files

Domain
detected Domain: e.map

XIOC detected Domain: e.map

extracted_from_files

Domain
detected Domain: n.call

XIOC detected Domain: n.call

extracted_from_files

Domain
detected Domain: y.call

XIOC detected Domain: y.call

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: t5f7352d5b5a67f42daf85cdcbf82abb4.355168cd6497356f912ecfa65220db4f.addons.mozilla.org

XIOC detected Domain: t5f7352d5b5a67f42daf85cdcbf82abb4.355168cd6497356f912ecfa65220db4f.addons.mozilla.org

extracted_from_files

Domain
detected Domain: skuola.net

XIOC detected Domain: skuola.net

extracted_from_files

Domain
detected Domain: www.skuola.net

XIOC detected Domain: www.skuola.net

extracted_from_files

Domain
detected Domain: t.using.call

XIOC detected Domain: t.using.call

extracted_from_files

Security Analysis Summary

Security Analysis Overview

This extension is a Firefox Add-ons extension published by sh4ttered. Version 1.0.1 has been analyzed by the Risky Plugins security platform, receiving a risk score of 39.98/100 (LOW risk) based on 79 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: 10 finding(s)
  • Medium: 69 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 sh4ttered on the Firefox Add-ons marketplace. The extension has approximately 21 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