UltimMC

Launcher by UltimMC

Offline Minecraft launcher.

Download blockedCheck a file you have

Note from Modgrade

This launcher lets you play Minecraft without buying it, so we do not link to it, to its site or to its files. This page lets you check a copy you already have: the fingerprints of its official files, our check of them, and the fake sites that copy it. A bought copy gives you an official account and access to the servers that require one: minecraft.net .

How we got this result

  1. Files checkedWe compare the fingerprint and the content of each file with the malware we and others have found, and look at what is inside it.2 of 2 official filesLast checked on 4 Nov 2026
  2. Deep checkOur own tools read the code of each current file and look for what harmful code does, like stealing logins or running hidden programs.2 of 2 official filesLast checked on 4 Nov 2026
  3. Passed Nothing harmful found in its 2 official files.Our checks look for known signs of harm. They cannot prove that a file is harmless.

At a glance

Download
Official files for Windows and Linux.
Fake sites
1 fake site found.
Privacy
Not read.
Releases
No release dates published.

Every official file

See each file in Releases

The files of its download page, by system and kind of download.

SystemOther
Windowsmmc-cracked-win32.zipPassedBuild (GitHub Actions)File checked on 4 Nov 2026Deep check on 4 Nov 2026
Linuxmmc-cracked-lin64.zipPassedBuild (GitHub Actions)File checked on 4 Nov 2026Deep check on 4 Nov 2026
PassedDeep check

Have a copy of UltimMC? Check that it is the official one.

Drop it here. We compare its fingerprint with the official UltimMC files and the files of the fake sites we know.

Source code
Public on GitHub

Official site

1 site uses its name to give other files. See Fake sites

Official site
github.com
Account
A Microsoft account, a local account with any name, or an Ely.by account.

Passed

Nothing harmful found in its 2 official files.

Our checks look for known signs of harm. They cannot prove that a file is harmless.

What we checked

A launcher runs on your computer like any program, and it downloads the game and its mods, so harmful code in it can steal your accounts or files.

Files checkedEach official file is downloaded on a separate machine, opened with every file inside it and never run. ClamAV, a free antivirus, and our YARA rules look for known signs of harm in all of it.
2 of its 2 official files, with every file inside them.Last checked on 4 Nov 2026
Deep checkOur own tools read the Java code in the files and look for what harmful code does, like stealing logins or running hidden programs. They read Java code only.
2 of its 2 official files.
Same as listedA fingerprint of the file. The same fingerprint means the same file, byte for byte.
Every file we checked has the SHA-256 that GitHub gives.

What we found

What its Java code can do. None of this is harmful by itself: many launchers and mods do the same.

Can connect to the internet
It has code that can go online, for example to check for updates, sign you in or download the game. What it sends is in Privacy.In all 2 files whose Java code we read

What is inside

The 30 files inside mmc-cracked-win32.zip.

Jar files inside
2 files.
Programs for Windows, Mac or Linux
26 files.
Graphics
None.
Other
2 files.

Every file

  • UltimMC/30 files
    • iconengines/1 file
      • qsvgicon.dll44 KB
    • imageformats/6 files
      • qgif.dll33 KB
      • qicns.dll46 KB
      • qico.dll35 KB
      • qjpeg.dll246 KB
      • qsvg.dll28 KB
      • qwbmp.dll27 KB
    • jars/2 files
      • JavaCheck.jar1.1 KB
      • NewLaunch.jar14 KB
    • platforms/1 file
      • qwindows.dll1455 KB
    • libeay32.dll2081 KB
    • libgcc_s_dw2-1.dll117 KB
    • libLauncher_iconfix.dll127 KB
    • libLauncher_nbt++.dll342 KB
    • libLauncher_nbt++.dll.a150 KB
    • libLauncher_quazip.dll314 KB
    • libLauncher_rainbow.dll68 KB
    • libssp-0.dll19 KB
    • libstdc++-6.dll1002 KB
    • libwinpthread-1.dll48 KB
    • qt.conf1 B
    • Qt5Core.dll5267 KB
    • Qt5Gui.dll5544 KB
    • Qt5Network.dll1577 KB
    • Qt5Svg.dll350 KB
    • Qt5Widgets.dll6384 KB
    • Qt5Xml.dll221 KB
    • ssleay32.dll436 KB
    • UltimMC.exe9189 KB
    • zlib1.dll74 KB

Not read

We have not read its Java code yet.

What we checked

A launcher can send information about you over the internet, such as your player name or your login.

Deep checkWe read the code and list each web address it can contact, and what it sends. We leave out code that is never used.
The Java code of all 2 files that hold some. See each file in Releases
Also named in its codeAddresses written in its code that no code we read contacts: a link shown to you, a default setting, or code we could not follow.
www.minecraft.net

Releases

Current files: the official files of its download page.

Current fileVersionSystemReleasedFileOur check
LinuxBuild (GitHub Actions)mmc-cracked-lin64.zip3.5 MB SHA-256 471d21ec25…PassedNo harmful code found. Checked on 4 Nov 2026.4 Nov 2026
1 of 2 current files

A fake site uses the name of UltimMC to offer its download from an address that is not the official one.

How to know the official site

Files come from
github.com/UltimMC
SHA-256A fingerprint of the file. The same fingerprint means the same file, byte for byte.
mmc-cracked-win32.zipfb71c6490f713006b7696aae514a652749524924e667724286a9dbb532a7750aEvery official file and its SHA-256, in Releases

The 1 fake site we foundChecked on 4 Nov 2026

Of these, it gives a file that is not the official one. Sites in one fold share their pages and their download.

ultimmc.comNot the official fileOnline

Pages with Google and Ezoic ads; the same ad script is on pojav-launcher.com. UltimMC has no site of its own.

Gives a zip named UltimMC-Launcher-All-Versions from archive.org, not from GitHub.

  • ultimmc.comOnline. Its download buttons give a file that is not the official one.Registered 27 Sep 2025 at Wix · Checked 4 Nov 2026

Its download

Our scanners found nothing known in it. It is not a file of the official download page today.

It gives UltimMC-Launcher-All-Versions (1).zip (39 MB). It is not a file of the official download page today: its SHA-256, a fingerprint of the file, matches none of them. ClamAV and our YARA rules found nothing in it and the 114 files inside it. We read its Java code: our rules found nothing harmful.

Technical details

UltimMC-Launcher-All-Versions (1).zip
SHA-256 1b6a30ec0e6334e43d2fb30e3b7b44d604ff423d739f6291062c82e59e0232aa39 MB, checked on 3 Nov 2026

If you downloaded a file from one of these sites

  1. Drop the file in the Scanner. It tells you if it is an official file of UltimMC or a file of these sites.
  2. If it is not an official file and you have not opened it, delete it.
  3. If you opened it: run a full scan with your antivirus. On Windows, the built-in one is Microsoft Defender, in the Windows Security app.
  4. If you signed in to the launcher it installed: use "sign out everywhere" in your Microsoft security settings and change your Microsoft account password.
Downloads
Not publishedUltimMC does not publish how many times it is downloaded.
Created
8 May 2020Its GitHub repository
License
Apache-2.0 (source code)Public on GitHub

About

UltimMC is a custom Minecraft launcher for managing multiple game instances while staying close to the original, with support for offline local accounts and Ely.by accounts. The launcher also includes Microsoft authentication support.

Written from its official pages: its GitHub page. How we write it