MalwareTips
Threat LensFile scan report

Is UltraSurf-18-02.zip safe?

Verdict
Malicious

Malicious file assessment

24 of 73 antivirus engines flagged the file, including alibabacloud and ALYac.

Do not open or extract this archive

Do not open or extract this archive

Read the full analysis
Saved file evidenceAntivirus consensus
24of 73 flagged
Flagged 24No detection 49
Digital specimenUltraSurf-18-02.zip553a3e1522e74db3dc…5a865096302698
Size3.4 MB
Code signingNot applicable
SandboxRuntime complete
First seen8y ago
Evidence2 priority signals
24 of 73 antivirus engines flagged the file, including alibabacloud and ALYac.

Recommended next actions

01

Before opening or extracting

Do not open or extract it. Delete this archive from the device, then empty the Recycle Bin or Trash.

02

If you already opened or extracted it

Close it. If it opened links, requested credentials, or triggered unexpected behavior, disconnect from the internet and run a full device scan.

Chapter 02

Intelligence

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

No saved analyst narrative

This report keeps the verified scan facts available below without inventing an analysis that was not saved with the scan.

Scan transparency

Coverage & freshness

4 of 5 complete

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

  • Antivirus

    Complete

    24 of 73 engines flagged the file.

  • Sandbox

    Complete

    1 isolated runtime environment contributed observations.

  • Network

    Partial

    2 of 22 contacted hosts were cross-checked; coverage is incomplete.

  • YARA

    Complete

    1 signature or behavior rule matched.

  • External intel

    Complete

    3 of 3 independent reference sources completed.

Chapter 03

Behavior

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

Runtime flight recorder

Capture complete
  • 1isolated sandbox run
  • 16MITRE ATT&CK techniques
  • 15spawned processes
  • 25network contacts
  • 29filesystem & mutex artifacts

What this file does

Observed actions and their security significance

  • High concern: Attempted to impair or bypass security controls.

  • Moderate concern: Contained obfuscated or packed code that makes inspection harder.

  • Moderate concern: Runs hidden system commands (script or shell).

  • Moderate concern: Communicated over a common application protocol; malware can use this for command-and-control.

  • Moderate concern: Scans through your files and folders.

  • Moderate concern: Communicates over the network in a non-standard way.

  • Moderate concern: Checked the environment for virtualisation or analysis tools.

These are observed capabilities from an isolated analysis. A technique does not prove malicious intent on its own, and the file never ran on your device.

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.

Recorded behavior

Attack story

Runtime observations grouped by analysis stage. Arrows organize the stages; they do not claim chronology or causality.

ObservedDerived

7 recorded facts from one runtime window. Every fact remains independently traceable in Analyst mode.

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 open or extract this archive. Delete this archive from the device, then empty the Recycle Bin or Trash.

  2. Recovery step 02

    If you already opened or extracted 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 original trusted source and verify its exact hash when possible.

Safety FAQ

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

8 evidence-based answers
Is UltraSurf-18-02.zip a virus?
Evidence-based answer
Yes — UltraSurf-18-02.zip is malicious. Do not open or extract it. Delete this archive from the device, then empty the Recycle Bin or Trash. 24 of 73 antivirus engines flag it (family: UltraSurf). 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 opened or extracted it, see the removal and recovery steps below.
What is UltraSurf-18-02.zip?
Evidence-based answer
UltraSurf-18-02.zip is a compressed archive, about 3.4 MB. Our analysis identifies it as malicious (family: UltraSurf) — 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 UltraSurf-18-02.zip?
Evidence-based answer
24 of 73 antivirus engines flagged UltraSurf-18-02.zip, 24 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.
What should I do if I already opened or extracted UltraSurf-18-02.zip?
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 UltraSurf-18-02.zip?
Evidence-based answer
To remove UltraSurf-18-02.zip: 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 archive 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 UltraSurf-18-02.zip?
Evidence-based answer
UltraSurf-18-02.zip 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 UltraSurf 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.
What is the SHA-256 hash of UltraSurf-18-02.zip?
Evidence-based answer
The SHA-256 hash of UltraSurf-18-02.zip is 553a3e1522e74db3dcfbf8792eb726aa28807bcbe7b3d9ebe45a865096302698, and its MD5 is 8cd443ef55eb274623d1ab3f454c0168. 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 UltraSurf-18-02.zip?
Evidence-based answer
This report reflects the scan run on July 1, 2026. Because a file's hash never changes, the identity of UltraSurf-18-02.zip 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.