Analysis

  • max time kernel
    600s
  • max time network
    582s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/06/2026, 13:28

General

  • Target
    Crystal Client Launcher.exe
  • Size 133.2MB
  • Sample260620-qq5dcsfs8j
  • SHA256 8dc40dcd2d9d2c65785999249112fe7729d546f378bd85828a65c29db9078628
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Modifies trusted root certificate store through registry 1 TTPs 2 IoCs

    A root certificate was added, modified, or removed in the trusted certificate store registry paths.

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Crystal Client Launcher.exe
    "C:\Users\Admin\AppData\Local\Temp\Crystal Client Launcher.exe"
    1⤵
    • Modifies trusted root certificate store through registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3948
    • C:\Users\Admin\AppData\Local\Temp\Crystal Client Launcher.exe
      "C:\Users\Admin\AppData\Local\Temp\Crystal Client Launcher.exe" --type=gpu-process --field-trial-handle=1536,14824474815834500186,10285847887272740897,131072 --disable-features=PlzServiceWorker,SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand --user-data-dir="C:\Users\Admin\AppData\Roaming\crystalclient-launcher" --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAANAAAAEAAAAAAAAAABAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1556 /prefetch:2
      2⤵
        PID:4932
      • C:\Users\Admin\AppData\Local\Temp\Crystal Client Launcher.exe
        "C:\Users\Admin\AppData\Local\Temp\Crystal Client Launcher.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1536,14824474815834500186,10285847887272740897,131072 --disable-features=PlzServiceWorker,SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand --lang=en-US --service-sandbox-type=none --user-data-dir="C:\Users\Admin\AppData\Roaming\crystalclient-launcher" --mojo-platform-channel-handle=1836 /prefetch:8
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1832
      • C:\Users\Admin\AppData\Local\Temp\Crystal Client Launcher.exe
        "C:\Users\Admin\AppData\Local\Temp\Crystal Client Launcher.exe" --type=renderer --user-data-dir="C:\Users\Admin\AppData\Roaming\crystalclient-launcher" --app-path="C:\Users\Admin\AppData\Local\Temp\resources\app.asar" --no-sandbox --no-zygote --force-device-scale-factor=1 --field-trial-handle=1536,14824474815834500186,10285847887272740897,131072 --disable-features=PlzServiceWorker,SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=4 --mojo-platform-channel-handle=2360 /prefetch:1
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4256
      • C:\Users\Admin\AppData\Local\Temp\Crystal Client Launcher.exe
        "C:\Users\Admin\AppData\Local\Temp\Crystal Client Launcher.exe" --type=renderer --user-data-dir="C:\Users\Admin\AppData\Roaming\crystalclient-launcher" --app-path="C:\Users\Admin\AppData\Local\Temp\resources\app.asar" --enable-sandbox --force-device-scale-factor=1 --field-trial-handle=1536,14824474815834500186,10285847887272740897,131072 --disable-features=PlzServiceWorker,SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=3332 /prefetch:1
        2⤵
          PID:2772
      • C:\Windows\System32\CompPkgSrv.exe
        C:\Windows\System32\CompPkgSrv.exe -Embedding
        1⤵
          PID:800
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k GPSvcGroup
          1⤵
            PID:4372

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

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                Downloads

                default.exc

                • Path C:\Users\Admin\AppData\Roaming\Microsoft\Spelling\en-US\default.exc
                • Size 2B
                • SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
                • MD5 SHA1 SHA512

                814168e4-5017-46f2-b2b9-7fe2c4c319e9.tmp

                • Path C:\Users\Admin\AppData\Roaming\crystalclient-launcher\814168e4-5017-46f2-b2b9-7fe2c4c319e9.tmp
                • Size 57B
                • SHA256 be4b8924ab38e8acf350e6e3b9f1f63a1a94952d8002759acd6946c4d5d0b5de
                • MD5 SHA1 SHA512 TLSH

                the-real-index

                • Path C:\Users\Admin\AppData\Roaming\crystalclient-launcher\Code Cache\js\index-dir\the-real-index
                • Size 96B
                • SHA256 07021266715cea804af56d4ee081d4817648c7547e5144b53d2f515d1613e0fe
                • MD5 SHA1 SHA512 TLSH

                the-real-index~RFe5940e7.TMP

                • Path C:\Users\Admin\AppData\Roaming\crystalclient-launcher\Code Cache\js\index-dir\the-real-index~RFe5940e7.TMP
                • Size 48B
                • SHA256 cb7bdf7d02e550846cf9094dbdcfa05061434124659005d8beea73222f19c139
                • MD5 SHA1 SHA512

                Network Persistent State~RFe59fd13.TMP

                • Path C:\Users\Admin\AppData\Roaming\crystalclient-launcher\Network Persistent State~RFe59fd13.TMP
                • Size 59B
                • SHA256 226eec4486509917aa336afebd6ff65777b75b65f1fb06891d2a857a9421a974
                • MD5 SHA1 SHA512 TLSH

                CURRENT

                • Path C:\Users\Admin\AppData\Roaming\crystalclient-launcher\Session Storage\CURRENT
                • Size 16B
                • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                • MD5 SHA1 SHA512

                fb72c6b8-cb29-4ec5-8d13-42d073c0b127.tmp

                • Path C:\Users\Admin\AppData\Roaming\crystalclient-launcher\fb72c6b8-cb29-4ec5-8d13-42d073c0b127.tmp
                • Size 1KB
                • SHA256 50337800f7d48ac5910667b84cc59f65256219e16aecb49361cc39c13b0f832b
                • MD5 SHA1 SHA512 TLSH

                memory/2772-51-0x00007FFA00870000-0x00007FFA00871000-memory.dmp

                memory/2772-52-0x00007FFA01190000-0x00007FFA01191000-memory.dmp

                memory/4932-2-0x00007FFA016E0000-0x00007FFA016E1000-memory.dmp