MalwareTips
Threat LensFile scan report

Is TCPOptimizer.exe safe?

Verdict
Malicious

This file is confirmed confirmed malware — abuse.ch researchers uploaded this exact sample to MalwareBazaar as known malware. Delete it and scan your system.

This file is confirmed confirmed malware — abuse.ch researchers uploaded this exact sample to MalwareBazaar as known malware. Delete it and scan your system.

Do not run this file

Delete this file and run a full-system antivirus scan.

Read the full analysis
Saved file evidenceAntivirus consensus
1of 75 flagged
Flagged 1No detection 74
Digital specimenTCPOptimizer.exe0a49dc0d2ce725af34…5143332a5511e9
Size668.0 KB
Code signingUnsigned
SandboxRuntime complete
First seen5y ago
Evidence3 priority signals
The hash appears in a researcher-curated malware database.

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.

Malware intelligence match

Why this file is confirmed malware

The conclusion below is grounded in the recorded hash match and scan evidence.

99%Confidence
Very high
Analyst conclusion

This file is confirmed confirmed malware — abuse.ch researchers uploaded this exact sample to MalwareBazaar as known malware. Delete it and scan your system.

Where this verdict could be wrong1 caveat
  • If this hash is a polymorphic-collision with a legitimate build, the MB label would be misleading — but MB curation makes this extremely rare.

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

Delete this file and run a full-system antivirus 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

    1 of 75 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

    6 signature or behavior rules 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
  • 32MITRE ATT&CK techniques
  • 15spawned processes
  • 24network contacts
  • 40filesystem & mutex artifacts

What this file does

Observed actions and their security significance

  • High concern: Injected code into another process, a technique that can conceal execution.

  • High concern: Used an input-capture technique that can record credentials or keystrokes.

  • High concern: Changed an auto-start location that can make code run after sign-in or restart.

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

  • High concern: Manipulated how the operating system loads code, which can redirect execution.

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

  • Moderate concern: Removed execution artefacts or logs, which can conceal activity.

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 trojans work

A trojan disguises itself as something useful or harmless to trick you into running it. Once open, it does its real job in the background — anything from stealing data to opening a back door or downloading more malware.

Bottom line:The disguise is the whole trick, so a trustworthy-looking name or icon means nothing.

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 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

    From a different, clean device, change the passwords on your important accounts (email and banking first) and turn on two-factor authentication.

  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 TCPOptimizer.exe malware?
Evidence-based answer
Yes — TCPOptimizer.exe is malicious. Do not run it. Delete this file from the device, then empty the Recycle Bin or Trash. 1 of 75 antivirus engines flag it (family: confirmed malware). It behaves as a trojan — malware disguised as something harmless to trick you into running it. It's also a confirmed malware sample catalogued by the abuse.ch threat-intelligence community. If you've already run it, see the removal and recovery steps below.
What is TCPOptimizer.exe?
Evidence-based answer
TCPOptimizer.exe is a Windows executable program, about 668 KB. Our analysis identifies it as malicious (family: confirmed malware) — a trojan — malware disguised as something harmless to trick you into running it. 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 TCPOptimizer.exe?
Evidence-based answer
1 of 75 antivirus engines flagged TCPOptimizer.exe, 1 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 is supported by an exact-hash match in a researcher malware catalogue and the wider saved evidence.
I already downloaded and ran TCPOptimizer.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 TCPOptimizer.exe?
Evidence-based answer
To remove TCPOptimizer.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 TCPOptimizer.exe?
Evidence-based answer
TCPOptimizer.exe is classified as a trojan — malware disguised as something harmless to trick you into running it. Engines attribute it to the confirmed malware 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.
Has TCPOptimizer.exe been seen before?
Evidence-based answer
Yes — this exact file is a known, catalogued malware sample in the abuse.ch MalwareBazaar threat-intelligence feed, first seen on January 24, 2024. A confirmed listing there is strong, independent evidence that the file is malicious.
What is the SHA-256 hash of TCPOptimizer.exe?
Evidence-based answer
The SHA-256 hash of TCPOptimizer.exe is 0a49dc0d2ce725af347df632539b70afcfd22b38e285920b515143332a5511e9, and its MD5 is d8292150c8ce862a97a923318df07805. 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 TCPOptimizer.exe?
Evidence-based answer
This report reflects the scan run on April 20, 2026. Because a file's hash never changes, the identity of TCPOptimizer.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.

Scanned by
harlan4096Staff
Scan another
Check a different file
URL instead?
Check if a link is safe
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.