Analysis

  • user interaction
    yes
  • max time kernel
    58s
  • max time network
    61s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    27/04/2026, 12:36

General

  • Target
    jjsploit_8.17.9_x64_en-US (1).msi
  • Size 6.0MB
  • Sample260427-psy4paby3s
  • SHA256 d60041d15a1294a6fb436d20bff8e2cfaffd6b61aeddd504aadd1a35dc7f5ddd
  • 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
  • Contacts third-party web service commonly abused for C2 1 TTPs 6 IoCs

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

  • 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 21 IoCs
  • Drops file in Windows directory 15 IoCs
  • Modifies trusted root certificate store through registry 1 TTPs 5 IoCs

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

  • 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 5 IoCs
  • Modifies registry class 26 IoCs
  • Modifies system certificate store 2 TTPs 7 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 WriteProcessMemory 14 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\jjsploit_8.17.9_x64_en-US (1).msi"
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:1492
    • C:\Program Files\jjsploit\jjsploit.exe
      "C:\Program Files\jjsploit\jjsploit.exe"
      2⤵
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Modifies trusted root certificate store through registry
      • Modifies system certificate store
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4996
      • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
        "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --embedded-browser-webview=1 --webview-exe-name=jjsploit.exe --webview-exe-version=8.17.9 --user-data-dir="C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView" --noerrdialogs --embedded-browser-webview-dpi-awareness=2 --autoplay-policy=no-user-gesture-required --disable-features=msWebOOUI,msPdfOOUI,msSmartScreenProtection --lang=en-US --mojo-named-platform-channel-pipe=4996.956.13625222359969215415
        3⤵
        • Drops file in Windows directory
        • Enumerates system info in registry
        • Modifies data under HKEY_USERS
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of WriteProcessMemory
        PID:948
        • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
          "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=crashpad-handler --user-data-dir=C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Crashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=132.0.6834.160 "--annotation=exe=C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --annotation=plat=Win64 "--annotation=prod=Edge WebView2" --annotation=ver=132.0.2957.140 --initial-client-data=0x160,0x164,0x168,0x13c,0x170,0x7ff863a6b078,0x7ff863a6b084,0x7ff863a6b090
          4⤵
            PID:2596
          • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
            "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=gpu-process --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView" --webview-exe-name=jjsploit.exe --webview-exe-version=8.17.9 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --always-read-main-dll --field-trial-handle=1684,i,9437204911736684496,5365511757056108374,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=1612 /prefetch:2
            4⤵
              PID:3768
            • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
              "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView" --webview-exe-name=jjsploit.exe --webview-exe-version=8.17.9 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=2004,i,9437204911736684496,5365511757056108374,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=1880 /prefetch:11
              4⤵
                PID:572
              • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
                "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView" --webview-exe-name=jjsploit.exe --webview-exe-version=8.17.9 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=2276,i,9437204911736684496,5365511757056108374,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=2280 /prefetch:13
                4⤵
                  PID:3136
                • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
                  "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=renderer --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView" --webview-exe-name=jjsploit.exe --webview-exe-version=8.17.9 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --autoplay-policy=no-user-gesture-required --video-capture-use-gpu-memory-buffer --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=" --always-read-main-dll --field-trial-handle=3540,i,9437204911736684496,5365511757056108374,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=3604 /prefetch:1
                  4⤵
                    PID:1508
            • 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 WriteProcessMemory
              PID:3680
              • C:\Windows\syswow64\MsiExec.exe
                C:\Windows\syswow64\MsiExec.exe -Embedding A7B4D0F75805E4ED830273F4D98D6EEA C
                2⤵
                • Loads dropped DLL
                • System Location Discovery: System Language Discovery
                PID:3376
              • C:\Windows\system32\srtasks.exe
                C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
                2⤵
                  PID:2256
              • C:\Windows\system32\vssvc.exe
                C:\Windows\system32\vssvc.exe
                1⤵
                • Checks SCSI registry key(s)
                PID:2440

              Network

                    MITRE ATT&CK Enterprise v16

                    Replay Monitor

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                    Downloads

                    e589de2.rbs

                    • Path C:\Config.Msi\e589de2.rbs
                    • Size 21KB
                    • SHA256 6d87d4cd3df6856b932731fa0d8c50b2c4e440528c29e5e34224e60ed3e583ab
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    jjsploit.exe

                    • Path C:\Program Files\jjsploit\jjsploit.exe
                    • Size 17.6MB
                    • SHA256 75c45301f7a6632b67934cd30bb08d4c322c55b9e68d2a6edbc5873982cbcbe8
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    jjsploit.lnk

                    • Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\jjsploit\jjsploit.lnk
                    • Size 1KB
                    • SHA256 52f110237f5e1e70d70447a8602bf628b917a29b65c099046dbbb396d8a49852
                    • MD5 SHA1 SHA512 TLSH

                    jjsploit.lnk~RFe58a0fe.TMP

                    • Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\jjsploit\jjsploit.lnk~RFe58a0fe.TMP
                    • Size 1KB
                    • SHA256 e2a16956e7be2f1bb520e58dcf1de7605df60278716e9694415073953e597e01
                    • MD5 SHA1 SHA512 TLSH

                    MSI6CCE.tmp

                    • Path C:\Users\Admin\AppData\Local\Temp\MSI6CCE.tmp
                    • Size 132KB
                    • SHA256 7f47d98ab25cfea9b3a2e898c3376cc9ba1cd893b4948b0c27caa530fd0e34cc
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    settings.dat

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Crashpad\settings.dat
                    • Size 280B
                    • SHA256 8e2a4aac4aada56d08ec9602733c135006aba24191ff1f71330a68d38b759f68
                    • MD5 SHA1 SHA512 TLSH

                    settings.dat

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Crashpad\settings.dat
                    • Size 280B
                    • SHA256 ac099f5c62d0bfc7d0b9b91e7e1a3947ac2a4acfc153cfab33fe0b0273485a98
                    • MD5 SHA1 SHA512

                    throttle_store.dat

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

                    index

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Default\DawnGraphiteCache\index
                    • Size 256KB
                    • SHA256 c52d6fba41ff31317427e47d947c6fc8233ca798bef7089edfa9499b6ff1515d
                    • MD5 SHA1 SHA512 SSDEEP

                    data_0

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Default\DawnWebGPUCache\data_0
                    • Size 8KB
                    • SHA256 d6a5fe39cd672781b256e0e3102f7022635f1d4bb7cfcc90a80fffe4d0f3877e
                    • MD5 SHA1 SHA512 SSDEEP

                    data_1

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Default\DawnWebGPUCache\data_1
                    • Size 264KB
                    • SHA256 902f30c1fb0597d0734bc34b979ec5d131f8f39a4b71b338083821216ec8d61b
                    • MD5 SHA1 SHA512 SSDEEP

                    data_2

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Default\DawnWebGPUCache\data_2
                    • Size 8KB
                    • SHA256 ec1702806f4cc7c42a82fc2b38e89835fde7c64bb32060e0823c9077ca92efb7
                    • MD5 SHA1 SHA512 SSDEEP

                    data_3

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Default\DawnWebGPUCache\data_3
                    • Size 8KB
                    • SHA256 e09f42c398d688dce168570291f1f92d079987deda3099a34adb9e8c0522b30c
                    • MD5 SHA1 SHA512 SSDEEP

                    MANIFEST-000001

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Default\Extension Rules\MANIFEST-000001
                    • Size 41B
                    • SHA256 f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4
                    • MD5 SHA1 SHA512

                    SCT Auditing Pending Reports

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

                    CURRENT

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Default\Site Characteristics Database\CURRENT
                    • Size 16B
                    • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                    • MD5 SHA1 SHA512

                    Local State

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Local State
                    • Size 1KB
                    • SHA256 df2721c7f7544d53a7cd124a4f0e8702b97326cdd9721c3489762ea9ca9b9f03
                    • MD5 SHA1 SHA512 TLSH

                    Local State

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Local State
                    • Size 2KB
                    • SHA256 dabf1525f40136f0fe0a8be56a09092a58cf84f6f4a6b66ae2928ed9fb6ee6b5
                    • MD5 SHA1 SHA512 TLSH

                    Local State

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Local State
                    • Size 3KB
                    • SHA256 b905e7f5f2e3303388c3c6cba5026392b7c14af389898bb12f9d3d0ae2608fb4
                    • MD5 SHA1 SHA512 TLSH

                    Local State

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Local State
                    • Size 16KB
                    • SHA256 f3c63b03309058ae52dcc30afc6f1aafd6d33d958b79720c96832e99144fcd5e
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    Local State~RFe58bafe.TMP

                    • Path C:\Users\Admin\AppData\Local\net.wearedevs\EBWebView\Local State~RFe58bafe.TMP
                    • Size 1KB
                    • SHA256 a95ccac7330d44880e0d0a06622c02acbe14e7784da3e12577a0c47b731d85cb
                    • MD5 SHA1 SHA512 TLSH

                    e589de1.msi

                    • Path C:\Windows\Installer\e589de1.msi
                    • Size 6.0MB
                    • SHA256 d60041d15a1294a6fb436d20bff8e2cfaffd6b61aeddd504aadd1a35dc7f5ddd
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    metadata-2

                    • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
                    • Size 24.6MB
                    • SHA256 326887c92366af76de58ad5b077608b69df66fdca0023e493d78a3cd36606c9c
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    {40e26408-6e0e-4c4a-9f0e-78456df2f865}_OnDiskSnapshotProp

                    • Path \??\Volume{a6d9cdad-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{40e26408-6e0e-4c4a-9f0e-78456df2f865}_OnDiskSnapshotProp
                    • Size 6KB
                    • SHA256 56ac82f8cd0e2cc7c0d0864940ebe49e9b939dedca357a2b098cbb2a7a038b1f
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    memory/948-301-0x000002078DA00000-0x000002078E1AE000-memory.dmp

                    memory/1492-67-0x000001C59EE80000-0x000001C59EF56000-memory.dmp

                    memory/1492-4-0x000001C59EE80000-0x000001C59EF56000-memory.dmp

                    memory/1508-212-0x00007FF883E30000-0x00007FF883E31000-memory.dmp

                    memory/2256-274-0x00000224F8D70000-0x00000224F8E46000-memory.dmp

                    memory/2256-297-0x00000224F8D70000-0x00000224F8E46000-memory.dmp

                    memory/2440-9-0x000001EBB20E0000-0x000001EBB21B6000-memory.dmp

                    memory/2440-261-0x000001EBB20E0000-0x000001EBB21B6000-memory.dmp

                    memory/3680-5-0x00000268CDD30000-0x00000268CDE06000-memory.dmp

                    memory/3768-93-0x00007FF883E30000-0x00007FF883E31000-memory.dmp

                    memory/4996-300-0x00000277E8580000-0x00000277E858C000-memory.dmp

                    memory/4996-299-0x00000277E6790000-0x00000277E6866000-memory.dmp