Is amsi.fail safe?
http://amsi.fail/
Coveragestrong2 of 4 applicable core capabilities
AMSI.fail is a research tool that generates PowerShell snippets to bypass Windows AMSI security controls.
The site is a free, open-source project that produces obfuscated PowerShell code designed to disable or break the Antimalware Scan Interface (AMSI) in Windows. While presented as educational and red-team research, the functional bypass code carries inherent risk of misuse.
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Where this site sits
- Dangerous1–20
- High Risk21–44
- Moderate Risk45–69
- Low Risk70–84
- Safe85–100
The score combines saved evidence strength and analysis quality. Coverage is reported separately.
01 · Investigation Brief
Investigation Brief
The site is a free, open-source project that produces obfuscated PowerShell code designed to disable or break the Antimalware Scan Interface (AMSI) in Windows. While presented as educational and red-team research, the functional bypass code carries inherent risk of misuse.
Purpose and Function
AMSI.fail provides a 'Generate' and 'Generate Encoded' button that outputs obfuscated PowerShell snippets intended to break or disable AMSI for the current process.
The site explains that AMSI is a Windows interface that scans script content for malicious usage and that the demonstrated techniques tamper with amsi.dll within the executing process.
Attribution and Origin
The project is maintained by a developer known as Flangvik and aggregates techniques attributed to security researchers including Rasta Mouse, Matt Graeber, and MDSec.
The site links to GitHub repositories and related research posts from the credited researchers, indicating an open-source, non-commercial origin.
Risk Assessment
No commercial mechanisms such as payments, subscriptions, or affiliate CTAs are present; the only risk stems from the functional bypass code itself.
The snippets are designed to evade security software, which means they could be misused by threat actors even though the stated intent is research and red-teaming.
Why the score is 55
Site provides working code to bypass Windows AMSI security controls. Coverage remains separate so missing sources cannot be mistaken for clean results.
02 · Security Evidence
Security evidence
Antivirus Engines
0/ 92
No detectionsSaved result - stale
No detections across 92 engines
No antivirus engine in this saved scan raised an adverse result. This is one signal, not a guarantee.
- Malicious
- 0
- Suspicious
- 0
- Total
- 92
All 92 engine results
- 0xSI_f33d - unrated - Clean
- Abusix - clean - Clean
- Acronis - clean - Clean
- ADMINUSLabs - clean - Clean
- AILabs (MONITORAPP) - clean - Clean
- AlienVault - clean - Clean
- alphaMountain.ai - clean - Clean
- AlphaSOC - unrated - Clean
- Antiy-AVL - clean - Clean
- ArcSight Threat Intelligence - unrated - Clean
- AutoShun - unrated - Clean
- Bfore.Ai PreCrime - unrated - Clean
- BitDefender - clean - Clean
- Bkav - unrated - Clean
- BlockList - clean - Clean
- Blueliv - clean - Clean
- Certego - clean - Clean
- ChainPatrol - unrated - Clean
- Chong Lua Dao - clean - Clean
- CINS Army - clean - Clean
- Cluster25 - unrated - Clean
- CRDF - clean - Clean
- Criminal IP - clean - Clean
- CSIS Security Group - unrated - Clean
- CTX AI - clean - Clean
- Cyan - unrated - Clean
- Cyble - clean - Clean
- CyRadar - clean - Clean
- desenmascara.me - clean - Clean
- DNS8 - unrated - Clean
- Dr.Web - clean - Clean
- EmergingThreats - clean - Clean
- Emsisoft - clean - Clean
- Ermes - unrated - Clean
- ESET - clean - Clean
- ESTsecurity - clean - Clean
- Forcepoint ThreatSeeker - clean - Clean
- Fortinet - clean - Clean
- Fortra - unrated - Clean
- G-Data - clean - Clean
- GCP Abuse Intelligence - unrated - Clean
- Google Safe Browsing - clean - Clean
- GreenSnow - clean - Clean
- GreyNoise - unrated - Clean
- Gridinsoft - unrated - Clean
- Guardpot - unrated - Clean
- Heimdal Security - clean - Clean
- Hunt.io Intelligence - unrated - Clean
- IPsum - clean - Clean
- Juniper Networks - clean - Clean
- K7AntiVirus - unrated - Clean
- Kaspersky - clean - Clean
- LevelBlue - clean - Clean
- Lionic - clean - Clean
- Lumu - unrated - Clean
- Malwared - clean - Clean
- MalwarePatrol - clean - Clean
- MalwareURL - unrated - Clean
- Mimecast - unrated - Clean
- Netcraft - unrated - Clean
- OpenPhish - clean - Clean
- PhishFort - unrated - Clean
- Phishing Database - clean - Clean
- Phishtank - clean - Clean
- PREBYTES - clean - Clean
- PrecisionSec - unrated - Clean
- Quick Heal - clean - Clean
- Quttera - clean - Clean
- Rising - clean - Clean
- SafeToOpen - unrated - Clean
- Sangfor - clean - Clean
- Sansec eComscan - unrated - Clean
- Scantitan - clean - Clean
- SCUMWARE.org - clean - Clean
- Seclookup - clean - Clean
- Snort IP sample list - unrated - Clean
- SOCRadar - unrated - Clean
- Sophos - clean - Clean
- StopForumSpam - clean - Clean
- Sucuri SiteCheck - clean - Clean
- ThreatHive - clean - Clean
- URLhaus - clean - Clean
- URLQuery - unrated - Clean
- Viettel Threat Intelligence - clean - Clean
- VIPRE - unrated - Clean
- ViriBack - clean - Clean
- VX Vault - clean - Clean
- Webroot - clean - Clean
- Xcitium Verdict Cloud - unrated - Clean
- Yandex Safebrowsing - clean - Clean
- ZeroCERT - clean - Clean
- ZeroFox - unrated - Clean
Security Scans
Checked against the browser threat feeds available to this scan — no hit.
What we observed
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Visual context from the captured page
AMSI.fail Generate obfuscated PowerShell snippets that break or disable AMSI for the current process.
What the captured page showed
2 observations- 01
AMSI.fail
- 02
Generate obfuscated PowerShell snippets that break or disable AMSI for the current process.
03 · Investigation Story
Investigation story
What the site claims
AMSI.fail
What we observed
The page content was captured and checked alongside 92 antivirus results.
What independent research found
1 external finding were saved and compared with the page evidence.
What remains unverified
2 of the 4 applicable core capabilities did not complete, so those gaps remain visible in the coverage ledger.
What kind of site and risk is this?
Threat category
No threat category confirmed
Service and business model
Content
Observed behavior
Evidence behind this classification
- 01Site provides working code to bypass Windows AMSI security controls.
- 02Site provides working code to bypass Windows AMSI security controls.
- 03Originally C# Azure Function (Later ported to JS) with an HTTP trigger that generates obfuscated PowerShell snippets that break or disable AMSI for the current process. Flangvik/AMSI.fail https://github.com/flangvik/amsi.fail/
Web research findings
Independent findings for amsi.fail, including public complaints, named review sources, registration records, and look-alike-domain evidence. A missing result is shown as unverified, never converted into a clean bill of health.
No independently sourced scam reports or credibility records were found for amsi.fail. That is common for new or low-traffic sites and does not clear the site.
Reputation Sources
How this domain rates across independent threat-intelligence and blocklist providers.
04 · Domain & Infrastructure
Domain & infrastructure
The plumbing behind the site — who registered it, how it’s encrypted, where it’s hosted, and where it links out. A valid certificate or a calm server doesn’t mean the business is honest — scam sites pass these checks too. Use this to corroborate the verdict, not to overturn it.
Infrastructure map
How the saved page connected to the wider web.
- Domainamsi.fail
- Redirects toamsi.fail
- Hosted byCloudflare, Inc.
- Referencesfonts.googleapis.com · fonts.gstatic.com
Domain Timeline
- Aug 22, 2020Domain registered
First appeared in WHOIS records — 6.0 years old today.
- Aug 27, 2026Saved security review — Flagged as suspicious
The completed checks from this saved scan are detailed above.
amsi.fail is an established domain now carrying threat signals. An older domain that starts tripping security checks is a classic pattern for an asset that was sold, repurposed, or compromised — the age alone is not reassurance.
Contact Verification
Saved contact details can help identify the operator. Their presence supports traceability; it does not prove the business is trustworthy.
- No direct contact email found on the captured page.
- Links to 8 social profiles.
Domain & Encryption
Redirect Chain
- 1301http://amsi.fail/
- 2206https://amsi.fail/
Server Reputation
Referenced Domains
Outbound domains this page links to or loads resources from. Each links to its own security scan.
05 · Evidence Ledger
Evidence ledger
- Antiviruspartial
- Browser threat feedcomplete
- Page contentcomplete
- Analysispartial
- Visual evidencecomplete
The conclusion is supported by the evidence saved with this report.
Technical threat
suspiciousMalware, phishing, credential theft and hostile infrastructure.
Additional evidence review · Additional evidence review
Operator / customer risk
unknownComplaints, withdrawals, business conduct and commercial traps.
No confirmed evidence in this dimension.
Source coverage and freshness
Status shows whether usable evidence was saved; finding shows what that evidence observed.
| Source | Result | Completion | Finding | Freshness |
|---|---|---|---|---|
| Antivirus | 0 of 92 engines flagged | Limited | No saved finding | stale fallback · Aug 27, 2026 |
| Browser protection | No browser threat-list match | Completed | No adverse finding | Not available |
| Page content | Page fetched · HTTP 200 | Completed | No adverse finding | Not available |
| Visual evidence | 2 visible observations saved with the page capture | Completed | No adverse finding | Not available |
| Independent research | 1 independent finding were saved | Completed | No adverse finding | Not available |
- Antivirus
- Result0 of 92 engines flagged
- CompletionLimited
- FindingNo saved finding
- Freshnessstale fallback · Aug 27, 2026
- Browser protection
- ResultNo browser threat-list match
- CompletionCompleted
- FindingNo adverse finding
- FreshnessNot available
- Page content
- ResultPage fetched · HTTP 200
- CompletionCompleted
- FindingNo adverse finding
- FreshnessNot available
- Visual evidence
- Result2 visible observations saved with the page capture
- CompletionCompleted
- FindingNo adverse finding
- FreshnessNot available
- Independent research
- Result1 independent finding were saved
- CompletionCompleted
- FindingNo adverse finding
- FreshnessNot available
07 · Safety FAQ
Safety FAQ
Common questions, answered directly from the scan data above — so the answers reflect the saved verdict and evidence in this report.
Is amsi.fail a scam or is it safe?
Is amsi.fail safe to use?
Has amsi.fail been flagged by antivirus engines?
Is amsi.fail on any phishing or malware blacklists?
How old is the amsi.fail domain?
Does amsi.fail have a valid SSL certificate?
Where is amsi.fail hosted?
How often is the amsi.fail report updated?
08 · Final Verdict
Final verdict
AMSI.fail is a research tool that generates PowerShell snippets to bypass Windows AMSI security controls.
The site is a free, open-source project that produces obfuscated PowerShell code designed to disable or break the Antimalware Scan Interface (AMSI) in Windows. While presented as educational and red-team research, the functional bypass code carries inherent risk of misuse.
09 · Community