MalwareTips
Threat LensFile scan report

Is Monsters’ Night_y-g2EM1.exe safe?

Verdict
Malicious

Twenty-three of 75 engines flagged this newly observed executable, while seven tier-1 detections, adverse signer history, and matched prior samples support OfferCore attribution.

The evidence strongly associates this executable with the OfferCore bundle installer: 23 of 75 engines flagged it, including seven tier-1 engines. Its verified Infivora signature is not reassuring because all nine recorded samples from that signer were malicious, and three signer-matched imphash examples previously received OfferCore findings.

Do not run this file

Do not execute the file; quarantine or delete it while keeping endpoint protection enabled. If it was already launched, perform a full system scan and inspect recently installed applications and browser settings.

Read the full analysis
Saved file evidenceAntivirus consensus
23of 75 flagged
Flagged 23No detection 52
Digital specimenMonsters’ Night_y-g2EM1.exe224f19bb001ad3234f…baf4a8dbd84cfa
Size15.4 MB
Code signingInfivora
SandboxPartial coverage
First seenToday
Evidence3 priority signals
23 of 75 antivirus engines flagged the file, including AhnLab-V3 and ALYac.

Recommended next actions

01

Before running

Do not run it. Delete this file from the device, then empty the Recycle Bin or Trash.

02

If you already ran it

Disconnect from the internet, start a full or offline antivirus scan, then secure important accounts from a clean device.

Chapter 02

Intelligence

The saved assessment, checked against the scan evidence and recorded coverage.

MT AI Engine · Verdict analysis

The reasoning behind this verdict

This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.

96%Confidence
Very high
Analyst conclusion

The evidence strongly associates this executable with the OfferCore bundle installer: 23 of 75 engines flagged it, including seven tier-1 engines. Its verified Infivora signature is not reassuring because all nine recorded samples from that signer were malicious, and three signer-matched imphash examples previously received OfferCore findings.

Where this verdict could be wrong5 caveats
  • The executable has a verified 'Infivora' signature, but that signer's recorded history is 9/9 malicious and it is not a curated trusted publisher.
  • 48/75 engines did not detect the sample, including several tier-1 products; however, seven independent tier-1 votes and repeated OfferCore naming outweigh that disagreement.
  • externalIntel.yaraify.ruleCount=0 and externalIntel.circl.hit=false, though absent external-intelligence hits do not negate the antivirus and signer-history evidence.
  • peAnalysis.highEntropyCode=false and likelyPacked=false, so packing indicators do not contribute to the risk assessment.
  • No completed sandbox observation or comprehensive contacted-host reputation check is available.

These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.

Recommended action

Do not execute the file; quarantine or delete it while keeping endpoint protection enabled. If it was already launched, perform a full system scan and inspect recently installed applications and browser settings.

Scan transparency

Coverage & freshness

3 of 5 complete

Complete means the check returned a usable result. It does not mean the file is safe.

  • Antivirus

    Complete

    23 of 75 engines flagged the file.

  • Sandbox

    Partial

    Runtime data is present, but no completed sandbox environment is recorded.

  • Network

    Not run

    No contacted-host reputation check is recorded.

    No timestamp recorded

  • YARA

    Complete

    Rule evaluation completed with no recorded matches.

  • External intel

    Complete

    3 of 3 independent reference sources completed.

Chapter 03

Behavior

Plain-English impact first, then the observed runtime evidence.

Threat context

How bundlers & adware work

This is a bundler — a real-looking installer that hides extra software inside. When you run it, it quietly installs things you never asked for: ad injectors, browser toolbars, fake 'PC cleaner' apps, or even more bundlers. The people behind it get paid for every unwanted app they sneak on.

Bottom line:It's not usually built to destroy files, but it slows your PC, floods it with ads, and can be a real pain to fully remove.

Chapter 04

Detection & Forensics

Consensus, attribution, signatures, code structure, prevalence, and identity.

Chapter 05

Safety & FAQ

Complete recovery guidance and answers for the next decision.

What to do now

This file is dangerous. Treat it as harmful and remove it.

  1. Recovery step 01

    Don't run this file. Delete this file from the device, then empty the Recycle Bin or Trash.

  2. Recovery step 02

    If you already ran it, disconnect from the internet and start with a full antivirus scan or Microsoft Defender Offline scan. If compromise is suspected or the problem persists, use a reputable second-opinion scanner and follow incident-recovery or clean-reinstall guidance.

  3. Recovery step 03

    If you typed any passwords while it was open, change them from a device you trust.

  4. Recovery step 04

    Get a fresh copy from the developer's official site or an official app store.

Safety FAQ

Direct answers grounded in the saved verdict and evidence in this report.

9 evidence-based answers
Is Monsters’ Night_y-g2EM1.exe malware?
Evidence-based answer
Yes — Monsters’ Night_y-g2EM1.exe is malicious. Do not run it. Delete this file from the device, then empty the Recycle Bin or Trash. 23 of 75 antivirus engines flag it (family: OfferCore). It behaves as adware or a potentially unwanted program (PUA) — not always destructive, but it bundles ads, trackers, or unwanted changes you didn't ask for. If you've already run it, see the removal and recovery steps below.
What is Monsters’ Night_y-g2EM1.exe?
Evidence-based answer
Monsters’ Night_y-g2EM1.exe is a Windows executable program (application/x-msdownload), about 15.4 MB. Our analysis identifies it as malicious (family: OfferCore) — adware or a potentially unwanted program (PUA) — not always destructive, but it bundles ads, trackers, or unwanted changes you didn't ask for. Because a file's name and icon can be faked, the safest way to identify it is by its cryptographic hash (below), not its filename.
How many antivirus engines detected Monsters’ Night_y-g2EM1.exe?
Evidence-based answer
23 of 75 antivirus engines flagged Monsters’ Night_y-g2EM1.exe, 23 of them as outright malicious. The raw count alone does not establish safety or danger; we also weigh which engines flagged it and corroborating behavior, identity, reputation, and rule evidence. The malicious verdict comes from the complete saved evidence, not from this antivirus count by itself.
I already downloaded and ran Monsters’ Night_y-g2EM1.exe — what should I do?
Evidence-based answer
Act quickly. 1) Disconnect the device from the internet to stop the malware communicating or spreading. 2) Run a full scan with reputable anti-malware software (such as Malwarebytes) and quarantine everything it finds. 3) Change your important passwords from a DIFFERENT, clean device — many threats log keystrokes or steal saved credentials. 4) If you bank or shop on this device, watch closely for fraud and alert your bank. 5) For a confirmed infection, the most reliable fix is to back up your personal files and reinstall the operating system for a clean start.
How do I remove Monsters’ Night_y-g2EM1.exe?
Evidence-based answer
To remove Monsters’ Night_y-g2EM1.exe: 1) restart into Safe Mode (Safe Mode with Networking if you need to download a tool) so the malware doesn't auto-start. 2) Run a full scan with reputable anti-malware software and let it quarantine or delete the detections. 3) Delete this file from the device, then empty the Recycle Bin or Trash. 4) Check your browser extensions, startup items, and scheduled tasks for anything unfamiliar. 5) Reboot and scan again to confirm it's gone. If detections keep coming back, a clean operating-system reinstall is the most dependable cure.
What kind of malware is Monsters’ Night_y-g2EM1.exe?
Evidence-based answer
Monsters’ Night_y-g2EM1.exe is classified as adware or a potentially unwanted program (PUA) — not always destructive, but it bundles ads, trackers, or unwanted changes you didn't ask for. Engines attribute it to the OfferCore family. Knowing the family matters because it tells you the likely impact — data theft, remote control, file encryption, or unwanted ads — and guides the cleanup.
Is Monsters’ Night_y-g2EM1.exe digitally signed?
Evidence-based answer
Yes — Monsters’ Night_y-g2EM1.exe carries a valid digital signature from Infivora, which confirms the file hasn't been tampered with since that publisher signed it. A valid signature is a positive signal, but note that malware is occasionally signed with stolen or abused certificates, so it isn't proof of safety on its own.
What is the SHA-256 hash of Monsters’ Night_y-g2EM1.exe?
Evidence-based answer
The SHA-256 hash of Monsters’ Night_y-g2EM1.exe is 224f19bb001ad3234f3af761182236ac60623db2f338032474baf4a8dbd84cfa, and its MD5 is c81d2e7b76a519fb24cf99f3f4f963a1. This hash is the file's unique fingerprint — two files with the same SHA-256 are identical. Use it to confirm you're looking at exactly this file (not just one with the same name) when comparing against antivirus databases or a download's published checksum.
How up to date is this analysis of Monsters’ Night_y-g2EM1.exe?
Evidence-based answer
This report reflects the scan run on October 3, 2026. Because a file's hash never changes, the identity of Monsters’ Night_y-g2EM1.exe is fixed — but antivirus coverage improves over time, so a file that looks clean today can pick up detections later (and vice-versa). If you need the latest picture, MalwareTips staff can re-run the analysis from scratch.
Chapter 06

Community

Member reviews and reports for this exact file hash.

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The raw file is processed temporarily and is not retained after processing. Its hash and report are public and permanent, so the next person who checks the same file gets an instant answer. Unknown files may be submitted to VirusTotal for analysis. If you ran this file on your computer and are worried, scan your system with an up-to-date antivirus and change critical passwords from a different device.