Analysis

  • geolocation tags

    eueuropefrfrance
  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    16/04/2026, 18:45

General

  • Target
    DCK/data/Thumbs.db
  • Size 157KB
  • Sample260416-xd8ctact91
  • SHA256 f066f70fc0da194ec692af6b01006e5705d0f04a695237d4238302b46f2c25a5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
4/10

Malware Config

Signatures

  • Drops file in Windows directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 16 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\DCK\data\Thumbs.db
    1⤵
      PID:3360
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      1⤵
      • Drops file in Windows directory
      • 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:32
      • 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=0x108,0x10c,0x110,0xe4,0x114,0x7ff9a9d3c728,0x7ff9a9d3c734,0x7ff9a9d3c740
        2⤵
          PID:936
        • 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=1752,i,32111754949975872,12876357004246622431,262144 --field-trial-handle=1948,i,5147704984692733657,9754541048682296307,262144 --variations-seed-version=20260129-170056.646000 --mojo-platform-channel-handle=1944 /prefetch:2
          2⤵
            PID:984
          • 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=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=1520,i,386303943767056388,13325394995066720224,524288 --field-trial-handle=1948,i,5147704984692733657,9754541048682296307,262144 --variations-seed-version=20260129-170056.646000 --mojo-platform-channel-handle=2276 /prefetch:11
            2⤵
            • System Time Discovery
            PID:3980
          • 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=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --metrics-shmem-handle=2412,i,640334134671447339,155556670470421647,524288 --field-trial-handle=1948,i,5147704984692733657,9754541048682296307,262144 --variations-seed-version=20260129-170056.646000 --mojo-platform-channel-handle=2568 /prefetch:13
            2⤵
              PID:1936
            • 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=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --metrics-shmem-handle=3272,i,18100932925865434990,10983206007388026313,2097152 --field-trial-handle=1948,i,5147704984692733657,9754541048682296307,262144 --variations-seed-version=20260129-170056.646000 --mojo-platform-channel-handle=3304 /prefetch:1
              2⤵
                PID:2204
              • 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=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --metrics-shmem-handle=3412,i,7785450968050589969,12656112268586963172,2097152 --field-trial-handle=1948,i,5147704984692733657,9754541048682296307,262144 --variations-seed-version=20260129-170056.646000 --mojo-platform-channel-handle=3584 /prefetch:1
                2⤵
                  PID:1812
                • 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=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --metrics-shmem-handle=4460,i,16435891187099244991,431812067530106483,2097152 --field-trial-handle=1948,i,5147704984692733657,9754541048682296307,262144 --variations-seed-version=20260129-170056.646000 --mojo-platform-channel-handle=4272 /prefetch:9
                  2⤵
                    PID:2628
                  • 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=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --metrics-shmem-handle=4652,i,10606091723024458430,541568331509870951,2097152 --field-trial-handle=1948,i,5147704984692733657,9754541048682296307,262144 --variations-seed-version=20260129-170056.646000 --mojo-platform-channel-handle=4752 /prefetch:1
                    2⤵
                      PID:1860
                    • 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=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=5460,i,4754128991897370742,6217143985399360024,524288 --field-trial-handle=1948,i,5147704984692733657,9754541048682296307,262144 --variations-seed-version=20260129-170056.646000 --mojo-platform-channel-handle=5468 /prefetch:14
                      2⤵
                        PID:3872
                      • 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=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --metrics-shmem-handle=5492,i,11762488113969471984,1871388241095752564,2097152 --field-trial-handle=1948,i,5147704984692733657,9754541048682296307,262144 --variations-seed-version=20260129-170056.646000 --mojo-platform-channel-handle=5500 /prefetch:1
                        2⤵
                          PID:3884
                      • 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:1516
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                          1⤵
                            PID:2200
                          • C:\Windows\SysWOW64\DllHost.exe
                            C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
                            1⤵
                            • System Location Discovery: System Language Discovery
                            PID:3316
                          • C:\Windows\system32\rundll32.exe
                            "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,Control_RunDLL C:\Windows\System32\srchadmin.dll ,
                            1⤵
                              PID:3560

                            Network

                                  MITRE ATT&CK Enterprise v16

                                  Replay Monitor

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                                  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 132a6b414a4f60b6090db386987414ecb748e973c4ab7daa2d3ea86555e2b8af
                                  • 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 264B
                                  • SHA256 bdc04c77adb6049cfb1262a1a2933c6fbddca6b378696ae2e89d5102c72ef513
                                  • 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 0cd1d51994446009e539a1baf12b7be471e8834b649355853e039a6a2b466dbe
                                  • 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

                                  TransportSecurity

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                                  • Size 685B
                                  • SHA256 305b5d58a643e414131e343f0f4be2e857eee0c82a9a6bab9e9d8d31528bf0a4
                                  • MD5 SHA1 SHA512 TLSH

                                  Preferences

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                  • Size 12KB
                                  • SHA256 ee46fa25ee78b83ba15b7a68792f5b6f5726412d09dc9599091bd7898b20f20a
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  Secure Preferences

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences
                                  • Size 17KB
                                  • SHA256 2328ea9073549adab02fe99e0127dcb5999d2517b99cac1f85861fd5d1268867
                                  • 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 a5d99761a4f56061dc0f59320e183b72bf71b9e69e34c3c808e0f85828929a58
                                  • MD5 SHA1 SHA512 TLSH

                                  the-real-index~RFe5a16a6.TMP

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index~RFe5a16a6.TMP
                                  • Size 96B
                                  • SHA256 2838c1363e6c74506eb2bb8301e14a891dc097ed6232ab136458d6629441abef
                                  • MD5 SHA1 SHA512 TLSH

                                  Local State

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                  • Size 90KB
                                  • SHA256 f1dfe44163a28b6cf919b74be6ffdcc0e6b92c8889523939d3738f95d2adadb4
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  Local State

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                  • Size 194KB
                                  • SHA256 f07b894506266446b76b2c2ed3a8d3fbfe5aa0ad59a5bbcb6461175d54619a35
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  data_1

                                  • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\ShaderCache\data_1
                                  • Size 264KB
                                  • SHA256 b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec
                                  • MD5 SHA1 SHA512 SSDEEP

                                  memory/1516-14-0x0000022DC9090000-0x0000022DC913F000-memory.dmp

                                  memory/3360-0-0x00000149FC6D0000-0x00000149FC77F000-memory.dmp