Analysis

  • user interaction
    yes
  • max time kernel
    64s
  • max time network
    69s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/08/2026, 16:28

General

  • Target
    Stellar_2.1.1_x64_en-US.msi
  • Size 19.9MB
  • Sample260828-tyl4jack91
  • SHA256 a01e0a93fb7f723727b14175fc78cdbad71c5e5450cd785963143f00bc652e5d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Network Share Discovery 1 TTPs

    Attempt to gather information on host network.

  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 14 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\Stellar_2.1.1_x64_en-US.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:908
    • C:\Program Files\Stellar\stellar.exe
      "C:\Program Files\Stellar\stellar.exe"
      2⤵
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4648
      • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
        "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --embedded-browser-webview=1 --webview-exe-name=stellar.exe --webview-exe-version=2.1.1 --user-data-dir="C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView" --noerrdialogs --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --autoplay-policy=no-user-gesture-required --disable-features=msWebOOUI,msPdfOOUI,msSmartScreenProtection --enable-features=MojoIpcz --lang=en-US --accept-lang=en-US --mojo-named-platform-channel-pipe=4648.2160.12016114720952523346 /pfhostedapp:7346ada77ad42d3004fa8dbea997eea31e49a493
        3⤵
        • Enumerates system info in registry
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of WriteProcessMemory
        PID:4592
        • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
          "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=crashpad-handler --user-data-dir=C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView /prefetch:4 /pfhostedapp:7346ada77ad42d3004fa8dbea997eea31e49a493 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\Crashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=122.0.6261.139 "--annotation=exe=C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --annotation=plat=Win64 "--annotation=prod=Edge WebView2" --annotation=ver=122.0.2365.106 --initial-client-data=0x188,0x18c,0x190,0x160,0x16c,0x7ffbcff25fd8,0x7ffbcff25fe4,0x7ffbcff25ff0
          4⤵
            PID:5124
          • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
            "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=gpu-process --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView" --webview-exe-name=stellar.exe --webview-exe-version=2.1.1 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=1796 --field-trial-handle=1800,i,8892083706733329303,7785395574268746184,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /prefetch:2 /pfhostedapp:7346ada77ad42d3004fa8dbea997eea31e49a493
            4⤵
              PID:2728
            • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
              "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView" --webview-exe-name=stellar.exe --webview-exe-version=2.1.1 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --mojo-platform-channel-handle=2248 --field-trial-handle=1800,i,8892083706733329303,7785395574268746184,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /prefetch:3 /pfhostedapp:7346ada77ad42d3004fa8dbea997eea31e49a493
              4⤵
                PID:4924
              • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
                "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView" --webview-exe-name=stellar.exe --webview-exe-version=2.1.1 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --mojo-platform-channel-handle=2460 --field-trial-handle=1800,i,8892083706733329303,7785395574268746184,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /prefetch:8 /pfhostedapp:7346ada77ad42d3004fa8dbea997eea31e49a493
                4⤵
                  PID:1016
                • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
                  "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=renderer --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView" --webview-exe-name=stellar.exe --webview-exe-version=2.1.1 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --autoplay-policy=no-user-gesture-required --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --js-flags="--harmony-weak-refs-with-cleanup-some --expose-gc --ms-user-locale=" --mojo-platform-channel-handle=2972 --field-trial-handle=1800,i,8892083706733329303,7785395574268746184,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /pfhostedapp:7346ada77ad42d3004fa8dbea997eea31e49a493 /prefetch:1
                  4⤵
                    PID:3148
            • C:\Windows\system32\msiexec.exe
              C:\Windows\system32\msiexec.exe /V
              1⤵
              • Enumerates connected drives
              • Drops file in Program Files directory
              • Drops file in Windows directory
              • Modifies data under HKEY_USERS
              • Modifies registry class
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:8
              • C:\Windows\syswow64\MsiExec.exe
                C:\Windows\syswow64\MsiExec.exe -Embedding EF8C3506D234A3867DD7C974239C173D C
                2⤵
                • Loads dropped DLL
                • System Location Discovery: System Language Discovery
                • Suspicious use of SetWindowsHookEx
                PID:4420
              • C:\Windows\system32\srtasks.exe
                C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
                2⤵
                  PID:4840
              • C:\Windows\system32\vssvc.exe
                C:\Windows\system32\vssvc.exe
                1⤵
                • Checks SCSI registry key(s)
                PID:4220

              Network

                    MITRE ATT&CK Enterprise v16

                    Replay Monitor

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                    Downloads

                    e59621c.rbs

                    • Path C:\Config.Msi\e59621c.rbs
                    • Size 10KB
                    • SHA256 134badafa79ad91ea0ff84ba4d830662005f2e19fb714c673235a43885688e49
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    stellar.exe

                    • Path C:\Program Files\Stellar\stellar.exe
                    • Size 29.9MB
                    • SHA256 8fab8e24eabd250b6dbcc5b58075ec480d8ca949e6e5a065c792230ff50cce8a
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    Stellar.lnk

                    • Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Stellar\Stellar.lnk
                    • Size 1KB
                    • SHA256 d93c348bd550f3b885dda57a51378139e034d112cabdd66ec8105657cdd1151a
                    • MD5 SHA1 SHA512 TLSH

                    Stellar.lnk~RFe596edd.TMP

                    • Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Stellar\Stellar.lnk~RFe596edd.TMP
                    • Size 1KB
                    • SHA256 cc4a74673865749336b472033e04c8b40959a3ef61f08b5750899f9c52ae3de4
                    • MD5 SHA1 SHA512 TLSH

                    MSI19A8.tmp

                    • Path C:\Users\Admin\AppData\Local\Temp\MSI19A8.tmp
                    • Size 132KB
                    • SHA256 7f47d98ab25cfea9b3a2e898c3376cc9ba1cd893b4948b0c27caa530fd0e34cc
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    settings.dat

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\Crashpad\settings.dat
                    • Size 280B
                    • SHA256 d521b0751716bf7e396a652ea33763aed0591de194b50040f0b5b925dcdf9558
                    • MD5 SHA1 SHA512

                    settings.dat

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\Crashpad\settings.dat
                    • Size 280B
                    • SHA256 f6c5488b969b9e4b7a6112342df645fe3df453c6dde598cc04ac27caba60cb5d
                    • MD5 SHA1 SHA512 TLSH

                    throttle_store.dat

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\Crashpad\throttle_store.dat
                    • Size 20B
                    • SHA256 41c91a9c93d76295746a149dce7ebb3b9ee2cb551d84365fff108e59a61cc304
                    • MD5 SHA1 SHA512

                    SCT Auditing Pending Reports

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\Default\Network\SCT Auditing Pending Reports
                    • Size 2B
                    • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                    • MD5 SHA1 SHA512

                    CURRENT

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\Default\Sync Data\LevelDB\CURRENT
                    • Size 16B
                    • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                    • MD5 SHA1 SHA512

                    MANIFEST-000001

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\Default\Sync Data\LevelDB\MANIFEST-000001
                    • Size 41B
                    • SHA256 f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4
                    • MD5 SHA1 SHA512

                    data_0

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\GraphiteDawnCache\data_0
                    • Size 8KB
                    • SHA256 d6a5fe39cd672781b256e0e3102f7022635f1d4bb7cfcc90a80fffe4d0f3877e
                    • MD5 SHA1 SHA512 SSDEEP

                    data_2

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\GraphiteDawnCache\data_2
                    • Size 8KB
                    • SHA256 ec1702806f4cc7c42a82fc2b38e89835fde7c64bb32060e0823c9077ca92efb7
                    • MD5 SHA1 SHA512 SSDEEP

                    data_3

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\GraphiteDawnCache\data_3
                    • Size 8KB
                    • SHA256 e09f42c398d688dce168570291f1f92d079987deda3099a34adb9e8c0522b30c
                    • MD5 SHA1 SHA512 SSDEEP

                    Local State

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\Local State
                    • Size 3KB
                    • SHA256 a3dcd02fcaf787b02b5abd4d6814c0d8598fb80f1a607a7143f3dbe3a7668e8c
                    • MD5 SHA1 SHA512 TLSH

                    Local State

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\Local State
                    • Size 15KB
                    • SHA256 7ac724eb77d9714dd5e18f0bd31d55146b135abccd8de0e04649d1fc50c32154
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    Local State

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\Local State
                    • Size 2KB
                    • SHA256 0d571d9b18bca623380a0552ccee2f16a00bfb21a0549e66c1f6cb4e44c6da96
                    • MD5 SHA1 SHA512 TLSH

                    Local State~RFe59d6ce.TMP

                    • Path C:\Users\Admin\AppData\Local\dev.stellar.launcher\EBWebView\Local State~RFe59d6ce.TMP
                    • Size 1KB
                    • SHA256 dcd2c0015ab95fa120fb8704cf8084d152871c32cc87528afc6d7116c1aaf54e
                    • MD5 SHA1 SHA512 TLSH

                    e59621b.msi

                    • Path C:\Windows\Installer\e59621b.msi
                    • Size 19.9MB
                    • SHA256 a01e0a93fb7f723727b14175fc78cdbad71c5e5450cd785963143f00bc652e5d
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    metadata-2

                    • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
                    • Size 26.1MB
                    • SHA256 be960bd205f181efdd4165cd9ced64897302efd5a3763747d29d120a6c4888a6
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    {7b0ad376-fdbb-4bf8-a891-23dcc1e76065}_OnDiskSnapshotProp

                    • Path \??\Volume{c4eee659-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{7b0ad376-fdbb-4bf8-a891-23dcc1e76065}_OnDiskSnapshotProp
                    • Size 6KB
                    • SHA256 45289bbb6453bc5800aa5a387e582f4b50e67d4dd35e21be6f5e5dcd8e3973cf
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    memory/8-43-0x000002AA2D120000-0x000002AA2DAC4000-memory.dmp

                    memory/2728-71-0x00007FFBF0A10000-0x00007FFBF0A11000-memory.dmp

                    memory/3148-85-0x00007FFBF0A10000-0x00007FFBF0A11000-memory.dmp