Overview
overview
8Static
static
3skytools.exe
windows10-2004-x64
4skytools.exe
windows11-ltsc_2024-x64
4OpenSteamTool.dll
windows10-2004-x64
1OpenSteamTool.dll
windows11-ltsc_2024-x64
1dwmapi.dll
windows10-2004-x64
1dwmapi.dll
windows11-ltsc_2024-x64
1millennium...64.exe
windows10-2004-x64
1millennium...64.exe
windows11-ltsc_2024-x64
1millennium...64.exe
windows10-2004-x64
1millennium...64.exe
windows11-ltsc_2024-x64
6millennium...um.dll
windows10-2004-x64
1millennium...um.dll
windows11-ltsc_2024-x64
6millennium...64.dll
windows10-2004-x64
1millennium...64.dll
windows11-ltsc_2024-x64
1luatools/....dex.js
windows10-2004-x64
3luatools/....dex.js
windows11-ltsc_2024-x64
3luatools/....kit.js
windows10-2004-x64
3luatools/....kit.js
windows11-ltsc_2024-x64
8luatools/b...st.bat
windows10-2004-x64
1luatools/b...st.bat
windows11-ltsc_2024-x64
8luatools/b...ys.vbs
windows10-2004-x64
1luatools/b...ys.vbs
windows11-ltsc_2024-x64
1luatools/b...ds.bat
windows10-2004-x64
1luatools/b...ds.bat
windows11-ltsc_2024-x64
1luatools/b...am.cmd
windows10-2004-x64
1luatools/b...am.cmd
windows11-ltsc_2024-x64
1luatools/b...er.ps1
windows10-2004-x64
3luatools/b...er.ps1
windows11-ltsc_2024-x64
8luatools/b...der.sh
ubuntu-18.04-amd64
3luatools/b...der.sh
debian-9-armhf
4luatools/b...der.sh
debian-9-mips
3luatools/b...der.sh
debian-9-mipsel
3Analysis
- max time kernel
149s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
20/06/2026, 16:04
Static task
static1
Behavioral task
behavioral1
Sample
skytools.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
skytools.exe
Resource
win11ltsc2024-20260617-en
Behavioral task
behavioral3
Sample
OpenSteamTool.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
OpenSteamTool.dll
Resource
win11ltsc2024-20260617-en
Behavioral task
behavioral5
Sample
dwmapi.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral6
Sample
dwmapi.dll
Resource
win11ltsc2024-20260617-en
Behavioral task
behavioral7
Sample
millennium/bin/millennium.crashhandler64.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral8
Sample
millennium/bin/millennium.crashhandler64.exe
Resource
win11ltsc2024-20260618-en
Behavioral task
behavioral9
Sample
millennium/bin/millennium.luavm64.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral10
Sample
millennium/bin/millennium.luavm64.exe
Resource
win11ltsc2024-20260618-en
Behavioral task
behavioral11
Sample
millennium/lib/millennium.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral12
Sample
millennium/lib/millennium.dll
Resource
win11ltsc2024-20260617-en
Behavioral task
behavioral13
Sample
millennium/lib/millennium.hhx64.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral14
Sample
millennium/lib/millennium.hhx64.dll
Resource
win11ltsc2024-20260618-en
Behavioral task
behavioral15
Sample
luatools/.millennium/Dist/index.js
Resource
win10v2004-20260513-en
Behavioral task
behavioral16
Sample
luatools/.millennium/Dist/index.js
Resource
win11ltsc2024-20260617-en
Behavioral task
behavioral17
Sample
luatools/.millennium/Dist/webkit.js
Resource
win10v2004-20260513-en
Behavioral task
behavioral18
Sample
luatools/.millennium/Dist/webkit.js
Resource
win11ltsc2024-20260617-en
Behavioral task
behavioral19
Sample
luatools/backend/api_manifest.bat
Resource
win10v2004-20260513-en
Behavioral task
behavioral20
Sample
luatools/backend/api_manifest.bat
Resource
win11ltsc2024-20260618-en
Behavioral task
behavioral21
Sample
luatools/backend/donate_keys.vbs
Resource
win10v2004-20260513-en
Behavioral task
behavioral22
Sample
luatools/backend/donate_keys.vbs
Resource
win11ltsc2024-20260618-en
Behavioral task
behavioral23
Sample
luatools/backend/downloads.bat
Resource
win10v2004-20260513-en
Behavioral task
behavioral24
Sample
luatools/backend/downloads.bat
Resource
win11ltsc2024-20260618-en
Behavioral task
behavioral25
Sample
luatools/backend/restart_steam.cmd
Resource
win10v2004-20260513-en
Behavioral task
behavioral26
Sample
luatools/backend/restart_steam.cmd
Resource
win11ltsc2024-20260618-en
Behavioral task
behavioral27
Sample
luatools/backend/scripts/downloader.ps1
Resource
win10v2004-20260513-en
Behavioral task
behavioral28
Sample
luatools/backend/scripts/downloader.ps1
Resource
win11ltsc2024-20260617-en
Behavioral task
behavioral29
Sample
luatools/backend/scripts/downloader.sh
Resource
ubuntu1804-amd64-20260513-en
Behavioral task
behavioral30
Sample
luatools/backend/scripts/downloader.sh
Resource
debian9-armhf-20260513-en
Behavioral task
behavioral31
Sample
luatools/backend/scripts/downloader.sh
Resource
debian9-mipsbe-20260513-en
Behavioral task
behavioral32
Sample
luatools/backend/scripts/downloader.sh
Resource
debian9-mipsel-20260513-en
General
- Target luatools/backend/restart_steam.cmd
- Size 532B
- Sample260620-th1a8ag17x
- SHA256 0b17eeec8d2e0e72c5a896a1d9558ac06928e3e2edcf7af23428afe571aa790e
- MD5 21b7509230737e6d588e450c1056ce7c
- SHA1 c57c7220578e542f249bbade1dc4cf6e4dff3508
- SHA512 6b2152e412869e99637b6fc06e4f58aa573ef1ce0803690ea7629903d83dab731c969027bed7b5fdf212f7819066f40e27d43c3f5db82892e52215124fde3b04
- TLSH T1E6F0C900EC022835AFE853B6ED051177AB5BE513400E1DD2929B45A0A8297CA25F68BD
- MD5 SHA1 SHA512 TLSH
Malware Config
Signatures
- Delays execution with timeout.exe 1 IoCs
pid Process 4040 timeout.exe - Kills process with taskkill 1 IoCs
pid Process 3988 taskkill.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3988 taskkill.exe - Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 4612 wrote to memory of 4728 4612 cmd.exe 85 PID 4728 wrote to memory of 4736 4728 cmd.exe 86 PID 4728 wrote to memory of 1028 4728 cmd.exe 87 PID 4612 wrote to memory of 3988 4612 cmd.exe 88 PID 4612 wrote to memory of 4040 4612 cmd.exe 91
Processes
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\luatools\backend\restart_steam.cmd"1⤵
- Suspicious use of WriteProcessMemory
PID:4612 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c reg query "HKCU\Software\Valve\Steam" /v SteamPath 2>nul | find "SteamPath"2⤵
- Suspicious use of WriteProcessMemory
PID:4728 -
C:\Windows\system32\reg.exereg query "HKCU\Software\Valve\Steam" /v SteamPath3⤵PID:4736
-
-
C:\Windows\system32\find.exefind "SteamPath"3⤵PID:1028
-
-
-
C:\Windows\system32\taskkill.exetaskkill /IM steam.exe /F2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3988
-
-
C:\Windows\system32\timeout.exetimeout /t 2 /nobreak2⤵
- Delays execution with timeout.exe
PID:4040
-