Resubmissions

07/08/2026, 19:11

260807-xwferasbjd10

07/08/2026, 19:08

260807-xtkxfshf7410

Analysis

  • user interaction
    yes
  • max time kernel
    53s
  • max time network
    78s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    07/08/2026, 19:08

General

  • Target
    jigsaw.exe
  • Size 283KB
  • Sample260807-xtkxfshf74
  • SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Jigsaw Ransomware

    Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.

  • Renames multiple (463) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • ConfuserEx .NET packer 1 IoCs

    Detects ConfuserEx .NET packer.

  • Drops file in Program Files directory 64 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 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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
    "C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4416
    • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
      "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      PID:4664
  • C:\Users\Admin\AppData\Roaming\Frfx\firefox.exe
    C:\Users\Admin\AppData\Roaming\Frfx\firefox.exe
    1⤵
    • Executes dropped EXE
    • Adds Run key to start application
    • Drops file in Program Files directory
    PID:2468
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2280
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      1⤵
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3684
      • 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=0x11c,0x120,0x124,0xf8,0x128,0x7ff9a2b8c728,0x7ff9a2b8c734,0x7ff9a2b8c740
        2⤵
          PID:472
        • 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=1772,i,7532915866522315320,13457595034137036699,262144 --field-trial-handle=1848,i,4638990243539581820,3423650960785076331,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=2020 /prefetch:2
          2⤵
            PID:1708
          • 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=2264,i,12766482193425940085,4464460134886179054,524288 --field-trial-handle=1848,i,4638990243539581820,3423650960785076331,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=2296 /prefetch:3
            2⤵
            • System Time Discovery
            PID:2492
          • 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=2396,i,3209115313978625677,17385033386778431947,524288 --field-trial-handle=1848,i,4638990243539581820,3423650960785076331,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=2512 /prefetch:8
            2⤵
              PID:3388
            • 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=3260,i,7717006432869244263,519140614479458323,2097152 --field-trial-handle=1848,i,4638990243539581820,3423650960785076331,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=3276 /prefetch:1
              2⤵
                PID:4332
              • 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=3284,i,11004063543394641156,16425765393722494193,2097152 --field-trial-handle=1848,i,4638990243539581820,3423650960785076331,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=3336 /prefetch:1
                2⤵
                  PID:1788
                • 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=7 --metrics-shmem-handle=4580,i,335294297494917288,16422934311544325565,2097152 --field-trial-handle=1848,i,4638990243539581820,3423650960785076331,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=4472 /prefetch:1
                  2⤵
                    PID:4712
                • 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:5032

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

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                        Downloads

                        DisplayLanguageNames.en_US_POSIX.txt.fun

                        • Path C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\LanguageNames2\DisplayLanguageNames.en_US_POSIX.txt.fun
                        • Size 32KB
                        • SHA256 a193ee2673e0ba5ebc5ea6e65665b8a28bd7611f06d2b0174ec2076e22d94356
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        invalid32x32.gif.fun

                        • Path C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\invalid32x32.gif.fun
                        • Size 160B
                        • SHA256 98b6c2ddfefc628d03ceaef9d69688674a6bc32eb707f9ed86bc8c75675c4513
                        • MD5 SHA1 SHA512 TLSH

                        drpbx.exe

                        • Path C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
                        • Size 283KB
                        • SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        BookmarkMergedSurfaceOrdering

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

                        data_1

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

                        4797cf30-fb5d-4fa3-9a54-fa0defc1dafa.tmp

                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\4797cf30-fb5d-4fa3-9a54-fa0defc1dafa.tmp
                        • Size 1KB
                        • SHA256 850691ad6f048ab686205650926e913da4e75068462b116e4915b576ecb589fe
                        • 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 523B
                        • SHA256 6900a2d61a0340af904454c72f90a650a4bb816300c80baa2570d6a32ac8f631
                        • MD5 SHA1 SHA512 TLSH

                        Preferences

                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                        • Size 10KB
                        • SHA256 36609b430dee72b70aa823d79749392f15d63aa8f8f0a8817cb1af1b484e0a39
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Secure Preferences

                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences
                        • Size 13KB
                        • SHA256 3426e293396fa1424a09f9423424627a398157ab7bfc3ec06964ae1df493a1c5
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                        • Size 115KB
                        • SHA256 a6a83fb3ebcca5e31988229ac96744fd6ab97257b928f78e3aeda811f6d95e65
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                        • Size 116KB
                        • SHA256 f9f99c70b87e5f64545479aa2574c76dfed6d673438ff0ed921dba6c4412bf12
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        settings.dat.fun

                        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.AccountsControl_cw5n1h2txyewy\Settings\settings.dat.fun
                        • Size 8KB
                        • SHA256 36537e56d60910ab6aa548e64ca4adafdcabde9d60739013993e12ba061dfd65
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        {DE1D13AF-66B1-4C23-86D6-06BA2906D966} - OProcSessId.dat.fun

                        • Path C:\Users\Admin\AppData\Local\Temp\{DE1D13AF-66B1-4C23-86D6-06BA2906D966} - OProcSessId.dat.fun
                        • Size 16B
                        • SHA256 619e246fc0ac11320ff9e322a979948d949494b0c18217f4d794e1b398818880
                        • MD5 SHA1 SHA512

                        memory/2468-149-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/2468-28-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/2468-26-0x00000000011C0000-0x00000000011C8000-memory.dmp

                        memory/4416-5-0x000000001C760000-0x000000001C7FC000-memory.dmp

                        memory/4416-1-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/4416-2-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/4416-0-0x00007FF9A6905000-0x00007FF9A6906000-memory.dmp

                        memory/4416-3-0x000000001BC30000-0x000000001BC68000-memory.dmp

                        memory/4416-4-0x000000001C1F0000-0x000000001C6BE000-memory.dmp

                        memory/4416-21-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/4416-20-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/4416-18-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/4664-27-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/4664-618-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/4664-23-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/4664-22-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/4664-144-0x00007FF9A6650000-0x00007FF9A6FF1000-memory.dmp

                        memory/5032-292-0x000001E26C030000-0x000001E26C214000-memory.dmp