Analysis

  • user interaction
    yes
  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-de
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-delocale:de-deos:windows10-2004-x64systemwindows
  • submitted
    23/07/2026, 01:01

General

  • Target
    avcodec-51.dll
  • Size 4.2MB
  • Sample260723-bdevlsbr3x
  • SHA256 e512fe71775f767285cfb3310d8f1ac042639ab3d1a02ca3675b82cfd3cbc702
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
3/10

Malware Config

Signatures

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • 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.

  • System Time Discovery 1 TTPs 1 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\avcodec-51.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4364
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\avcodec-51.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4220
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:5208
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=140.0.7339.81 --initial-client-data=0x118,0x11c,0x120,0xf4,0x124,0x7ff9c6bac728,0x7ff9c6bac734,0x7ff9c6bac740
      2⤵
        PID:5944
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-pre-read-main-dll --force-high-res-timeticks=disabled --gpu-preferences=SAAAAAAAAADgAAAIAAAAAAAAAAAAAGAAAQAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAABAAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --metrics-shmem-handle=1700,i,8663262830418278508,2108101513622672154,262144 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=2116 /prefetch:2
        2⤵
          PID:644
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=de --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=2256,i,4949626692591884207,17500703830061701192,524288 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=2276 /prefetch:3
          2⤵
          • System Time Discovery
          PID:4524
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=de --service-sandbox-type=service --force-high-res-timeticks=disabled --metrics-shmem-handle=2456,i,15981349762542701874,3986202153979505517,524288 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=2612 /prefetch:8
          2⤵
            PID:3420
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=de --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --metrics-shmem-handle=3252,i,11174675811855369857,11749664419062593892,2097152 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=3268 /prefetch:1
            2⤵
              PID:4820
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=de --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --metrics-shmem-handle=3288,i,14364176280457765426,2416903524313643941,2097152 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=3300 /prefetch:1
              2⤵
                PID:1256
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --extension-process --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=de --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --metrics-shmem-handle=4444,i,1026374405129622351,9146608179086617665,2097152 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=4460 /prefetch:2
                2⤵
                  PID:4040
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=de --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --metrics-shmem-handle=4776,i,16344902626128228373,4842086776917255362,2097152 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=4772 /prefetch:1
                  2⤵
                    PID:5708
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=de --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=5536,i,15541587314112476726,15274923903945049170,524288 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=5544 /prefetch:8
                    2⤵
                      PID:3432
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=de --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --metrics-shmem-handle=6092,i,9942160807908466994,10125660561377780628,2097152 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=6000 /prefetch:1
                      2⤵
                        PID:5736
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=de --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --metrics-shmem-handle=4912,i,4714713099317346942,1037853580649214720,2097152 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=4784 /prefetch:1
                        2⤵
                          PID:2340
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=de --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --metrics-shmem-handle=5816,i,7094448964852056612,11452838771762812311,524288 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=3348 /prefetch:8
                          2⤵
                            PID:5384
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=de --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --metrics-shmem-handle=240,i,1595544773540764776,17006059225767309772,524288 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=5800 /prefetch:8
                            2⤵
                              PID:5816
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=de --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --metrics-shmem-handle=3304,i,10272325669023155510,8374513516659866555,524288 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=3408 /prefetch:8
                              2⤵
                                PID:4812
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=de --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=15 --metrics-shmem-handle=4456,i,1882036341242515079,13590485919985865857,2097152 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=3396 /prefetch:1
                                2⤵
                                  PID:4276
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=5140 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --force-high-res-timeticks=disabled --gpu-preferences=SAAAAAAAAADoAAAIAAAAAAAAAAAAAGAAAQAAAAAAAACEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAABAAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --metrics-shmem-handle=4524,i,15068258531137774908,14273570047993419873,262144 --field-trial-handle=2112,i,17250222937590700424,12293553698783472835,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=4520 /prefetch:8
                                  2⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:3048
                              • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                                "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                                1⤵
                                  PID:4804
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                                  1⤵
                                    PID:4580

                                  Network

                                        MITRE ATT&CK Enterprise v16

                                        Replay Monitor

                                        Loading Replay Monitor...

                                        Downloads

                                        BookmarkMergedSurfaceOrdering

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BookmarkMergedSurfaceOrdering
                                        • Size 6B
                                        • SHA256 4489f9e3e454748b3521eb214e0a5694d562cff3d9ff511cb456953c8f534c00
                                        • MD5 SHA1 SHA512

                                        BrowsingTopicsState

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BrowsingTopicsState
                                        • Size 414B
                                        • SHA256 cb70c7a072b9708e9cd87c053157fdcc4e8ff6fc29ee49570d4bb81a4d2e788c
                                        • MD5 SHA1 SHA512 TLSH

                                        the-real-index

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Code Cache\js\index-dir\the-real-index
                                        • Size 1KB
                                        • SHA256 1f80a1bd976a50742f88a532f2ab88bc0175b02011f5d9f9d34df8cc7184a370
                                        • MD5 SHA1 SHA512 TLSH

                                        Network Persistent State

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                                        • Size 9KB
                                        • SHA256 e0133cc7b5e0e49e76f6f74ff10e16b3034130ce6aacd825963e159eeb7ee329
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Network Persistent State

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                                        • Size 3KB
                                        • SHA256 33c010fb44b90e2ccd49137977f034ae6c84fa9acbc0f41b2aff63b6de9c5169
                                        • MD5 SHA1 SHA512 TLSH

                                        Network Persistent State

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                                        • Size 3KB
                                        • SHA256 9f4ee7da75819dc52ea834477befc1b393d42b356a648f2c3203d6d859f17c36
                                        • MD5 SHA1 SHA512 TLSH

                                        SCT Auditing Pending Reports

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports
                                        • Size 2B
                                        • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                                        • MD5 SHA1 SHA512

                                        Preferences

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                        • Size 12KB
                                        • SHA256 262505ef4bb18b4f5a6fa7022888d0d1a1538f6c4315d2c211bf1b994af7007e
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Preferences

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                        • Size 14KB
                                        • SHA256 b860a513962a1170d0117f32572ce77dc4a420766bb5446f2c68f5644270b7fe
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Preferences

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                        • Size 13KB
                                        • SHA256 003fa3b86b44688617b6a25a06f2f4fe65e3955e0abe56fbf2ce397c7c178dfe
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Secure Preferences

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences
                                        • Size 17KB
                                        • SHA256 cb2e27ff5de92b330d7d75ecf81e90b61c537659f1de9067eb5c6be59f79aee2
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        the-real-index

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index
                                        • Size 120B
                                        • SHA256 5ec163f3772feb6341c1476f5593f1357ee1813cf5ccd3d88ae5689fec6483f0
                                        • MD5 SHA1 SHA512 TLSH

                                        the-real-index~RFe589601.TMP

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index~RFe589601.TMP
                                        • Size 96B
                                        • SHA256 97c02da4f91fb7ebb09840649ec9dae820ffd0e156949db5b111387d978a8807
                                        • MD5 SHA1 SHA512 TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                        • Size 236KB
                                        • SHA256 ab37822459b862a26cb8d0fb5b64ab0dd3f1c294adf17ffbf4a4e19874370593
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                        • Size 115KB
                                        • SHA256 57088b4e927cf391f032341258d2afbaf2c8ca8758e65e5a581b1e75398fbd96
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                        • Size 235KB
                                        • SHA256 a2468628543a9e21059bafbf3db933c9906ad02aca86c73fc887c9619e4a35a8
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                        • Size 235KB
                                        • SHA256 c8f49aea7fb2dc5e38339418dbe93a0d38a3fb13d2c0fd30a4af842343e7f368
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        memory/4220-384-0x000000006BB40000-0x000000006C219000-memory.dmp

                                        memory/4220-0-0x000000006BB40000-0x000000006C219000-memory.dmp