Analysis
- max time kernel
150s - max time network
131s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
10/08/2026, 04:38
General
- Target LegacyLauncher.exe
- Size 111.9MB
- Sample260810-e9nn6s1emf
- SHA256 a092da5c6df6c6be4341846f43425006ee0da2ce96953cf98a4b947457824ac4
Malware Config
Signatures
- Executes dropped EXE 4 IoCs
- Loads dropped DLL 35 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Drops desktop.ini file(s) 1 IoCs
- Network Service Discovery 1 TTPs 1 IoCs
Attempt to gather information on host's network.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Inno Setup is an open-source installation builder for Windows applications. 3 IoCs
Inno Setup installer
- Checks processor information in registry 2 TTPs 6 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\LegacyLauncher.exe"C:\Users\Admin\AppData\Local\Temp\LegacyLauncher.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-0LNKM90IJO.tmp\LegacyLauncher.tmp"C:\Users\Admin\AppData\Local\Temp\is-0LNKM90IJO.tmp\LegacyLauncher.tmp" /SL5="$80214,115006833,1320448,C:\Users\Admin\AppData\Local\Temp\LegacyLauncher.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\.tlauncher\legacy\Minecraft\LL.exe"C:\Users\Admin\AppData\Roaming\.tlauncher\legacy\Minecraft\LL.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\.tlauncher\legacy\Minecraft\jre\x64\bin\java.exeC:\Users\Admin\AppData\Roaming\.tlauncher\legacy\Minecraft\jre\x64\bin\java.exe -Dtlauncher.bootstrap.restartExec=LL.exe -Xmx64M -jar launcher/bootstrap.jar4⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\.tlauncher\legacy\Minecraft\jre\x64\bin\javaw.exeC:\Users\Admin\AppData\Roaming\.tlauncher\legacy\Minecraft\jre\x64\bin\javaw.exe -Xmx256m -Dfile.encoding=UTF-8 -Djava.net.useSystemProxies=true -Dtlauncher.systemCharset=UTF-8 -Dtlauncher.logFolder=C:\Users\Admin\AppData\Roaming\.tlauncher\logs --add-exports java.desktop/sun.awt=javafx.swing --add-exports javafx.graphics/com.sun.javafx.application=ALL-UNNAMED -Dtlauncher.bootstrap.restartExec=LL.exe -Dloader.main=net.legacylauncher.bootstrap.Bootstrap -classpath C:\Users\Admin\AppData\Roaming\.tlauncher\legacy\Minecraft\launcher\bootstrap.jar org.springframework.boot.loader.PropertiesLauncher --packageMode windows --targetJar launcher/launcher.jar --targetLibFolder launcher/libraries -- --settings tl.properties5⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
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C:\Windows\System32\GameBarPresenceWriter.exe"C:\Windows\System32\GameBarPresenceWriter.exe" -ServerName:Windows.Gaming.GameBar.Internal.PresenceWriterServer1⤵
- Network Service Discovery
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Suspicious use of SetWindowsHookEx
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k BcastDVRUserService -s BcastDVRUserService1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Modifies registry class
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
flatlaf-windows-x86_64-6667230194100.dll
LegacyLauncher.tmp
jna4883044953049813360.dll
libtmp4479092220062341797junixsocket-native-2.9.0.dll
legacy.properties
LL.exe
awt.dll
fontmanager.dll
freetype.dll
java.dll
java.exe
javaw.exe
jawt.dll
jimage.dll
jli.dll
jsvml.dll
msvcp140.dll
net.dll
nio.dll
classes.jsa
jvm.dll
vcruntime140.dll
vcruntime140_1.dll
zip.dll
logging.properties
java.security
is-77O7N31PNR.tmp
is-AKSM5SNH9W.tmp
is-SHMEN620IT.tmp
fontconfig.bfc
jvm.cfg
cacerts
tzdb.dat
tzmappings
bootstrap.jar
stubLauncher.args
tl.args
tl.properties
tl.properties
desktop.ini
memory/2960-0-0x0000000000F2F000-0x0000000000F30000-memory.dmp
memory/2960-1035-0x0000000000E70000-0x0000000000FC1000-memory.dmp
memory/2960-1-0x0000000000E70000-0x0000000000FC1000-memory.dmp
memory/2960-11-0x0000000000E70000-0x0000000000FC1000-memory.dmp
memory/4728-1054-0x00000000000C0000-0x00000000003AD000-memory.dmp
memory/4728-986-0x00000000000C0000-0x00000000003AD000-memory.dmp
memory/5416-12-0x00000000004D0000-0x0000000000975000-memory.dmp
memory/5416-14-0x00000000004D0000-0x0000000000975000-memory.dmp
memory/5416-16-0x00000000004D0000-0x0000000000975000-memory.dmp
memory/5416-22-0x00000000004D0000-0x0000000000975000-memory.dmp
memory/5416-9-0x00000000004D0000-0x0000000000975000-memory.dmp
memory/5416-1014-0x00000000004D0000-0x0000000000975000-memory.dmp
memory/5416-8-0x0000000000894000-0x0000000000896000-memory.dmp
memory/5416-1034-0x00000000004D0000-0x0000000000975000-memory.dmp
memory/5416-948-0x00000000004D0000-0x0000000000975000-memory.dmp