Analysis

  • user interaction
    yes
  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/08/2026, 22:15

General

  • Target
    bigwalk-trainer.html
  • Size 32KB
  • Sample260809-16lajaem2v
  • SHA256 06ac5b34f03e98be6e56edfbbe12d0bacacc7f06b28e6b8fa7ea26b14cc9fff9
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10

Malware Config

Signatures

  • Drops desktop.ini file(s) 3 IoCs
  • Checks processor information in registry 2 TTPs 19 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url "C:\Users\Admin\AppData\Local\Temp\bigwalk-trainer.html"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2852
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url C:\Users\Admin\AppData\Local\Temp\bigwalk-trainer.html
      2⤵
      • Drops desktop.ini file(s)
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2784
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 1980 -prefsLen 27097 -prefMapHandle 1984 -prefMapSize 270279 -ipcHandle 2060 -initialChannelId {2b39bab7-54ad-4b0b-929a-ccb6876ff0b4} -parentPid 2784 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2784" -appDir "C:\Program Files\Mozilla Firefox\browser" - 1 gpu
        3⤵
          PID:2940
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 2440 -prefsLen 27133 -prefMapHandle 2444 -prefMapSize 270279 -ipcHandle 2452 -initialChannelId {f3541539-96af-478a-93e6-a5d0651c291f} -parentPid 2784 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2784" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 2 socket
          3⤵
            PID:1084
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 3704 -prefsLen 27323 -prefMapHandle 3708 -prefMapSize 270279 -jsInitHandle 3712 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 3720 -initialChannelId {a350c7de-f7b6-4c54-aa75-9c79133351b0} -parentPid 2784 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2784" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 3 tab
            3⤵
            • Checks processor information in registry
            PID:1592
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 3872 -prefsLen 27323 -prefMapHandle 3876 -prefMapSize 270279 -ipcHandle 3944 -initialChannelId {f558f06c-5e93-4906-b93a-6a4174f2bd64} -parentPid 2784 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2784" -appDir "C:\Program Files\Mozilla Firefox\browser" - 4 rdd
            3⤵
              PID:3496
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 2992 -prefsLen 34822 -prefMapHandle 2648 -prefMapSize 270279 -jsInitHandle 2828 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 2836 -initialChannelId {5ed46bbc-f4c3-4cc8-8d5c-ff7e6f048f90} -parentPid 2784 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2784" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 5 tab
              3⤵
              • Checks processor information in registry
              PID:5100
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -sandboxingKind 0 -prefsHandle 5000 -prefsLen 35010 -prefMapHandle 5004 -prefMapSize 270279 -ipcHandle 5012 -initialChannelId {ab51dbc5-b621-45d3-927f-53ac458f8391} -parentPid 2784 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2784" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 6 utility
              3⤵
              • Checks processor information in registry
              PID:4368
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5564 -prefsLen 32952 -prefMapHandle 5616 -prefMapSize 270279 -jsInitHandle 5620 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5628 -initialChannelId {0e335c2d-8fab-475f-9138-184a48ccd15b} -parentPid 2784 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2784" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 7 tab
              3⤵
              • Checks processor information in registry
              PID:5916
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5788 -prefsLen 32952 -prefMapHandle 5792 -prefMapSize 270279 -jsInitHandle 5796 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5804 -initialChannelId {aab78354-f241-4c74-8dbf-c5ed8398079d} -parentPid 2784 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2784" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 8 tab
              3⤵
              • Checks processor information in registry
              PID:2416
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5976 -prefsLen 32952 -prefMapHandle 5980 -prefMapSize 270279 -jsInitHandle 5984 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5992 -initialChannelId {cb390877-9bad-4c0f-91b8-11c1ea4321fa} -parentPid 2784 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2784" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 9 tab
              3⤵
              • Checks processor information in registry
              PID:1252

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              4E3D8FAAF804AAC616BC48BD4AFA8BE284516FCF

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\wg40zd9z.default-release\cache2\entries\4E3D8FAAF804AAC616BC48BD4AFA8BE284516FCF
              • Size 16KB
              • SHA256 0cb561771e2681793adc3aff8a0d355212726a86ff8eb001c7617595d5926627
              • MD5 SHA1 SHA512 SSDEEP TLSH

              86DDBDE5E1EAFC4C588EE71FB531985C95CCC542

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\wg40zd9z.default-release\cache2\entries\86DDBDE5E1EAFC4C588EE71FB531985C95CCC542
              • Size 16KB
              • SHA256 7dcbb3650adef61e19272430d353c57887b1acded956218966e105ad2d09d356
              • MD5 SHA1 SHA512 SSDEEP TLSH

              tmpaddon

              • Path C:\Users\Admin\AppData\Local\Temp\tmpaddon
              • Size 11KB
              • SHA256 ddf3ba4e25a622276755133e0cce5605b83719c7cab3546e09acbfed00d6a986
              • MD5 SHA1 SHA512 SSDEEP TLSH

              tmpaddon

              • Path C:\Users\Admin\AppData\Local\Temp\tmpaddon
              • Size 502KB
              • SHA256 87862f4bc8559fbe578389a9501dc01c4c585edb4bb03b238493327296d60171
              • MD5 SHA1 SHA512 SSDEEP TLSH

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\db\data.safe.tmp
              • Size 5KB
              • SHA256 7701e292c79ae5d4ec7469254c45c361d07c8fced3f276e1ea5c0509d0b1a10f
              • MD5 SHA1 SHA512 SSDEEP TLSH

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\db\data.safe.tmp
              • Size 7KB
              • SHA256 ce6c633c8ecfcde6152e003e282fcf1cf20db715628e29b7719ca50d07fc728c
              • MD5 SHA1 SHA512 SSDEEP TLSH

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\db\data.safe.tmp
              • Size 48KB
              • SHA256 7e41085ae12195f62b6951923dbd66bcd434888b37edb17dd50e0ff40b7f4752
              • MD5 SHA1 SHA512 SSDEEP TLSH

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\db\data.safe.tmp
              • Size 48KB
              • SHA256 6038d3a0ee860a2aa5aa25445b8e5299db282da8f8a0ea3f5e2cb9a2761495f2
              • MD5 SHA1 SHA512 SSDEEP TLSH

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\db\data.safe.tmp
              • Size 48KB
              • SHA256 2bde5c10d0dde3142e9450cfd355cd77eac2721295c1bdebf53851046d2711f4
              • MD5 SHA1 SHA512 SSDEEP TLSH

              events

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\events\events
              • Size 1KB
              • SHA256 7c4465af29e76b25f98d224208183ef01696017b3709538bd9b932e529a61b26
              • MD5 SHA1 SHA512 TLSH

              09a107c0-9390-4381-b698-1dc9141ae500

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\pending_pings\09a107c0-9390-4381-b698-1dc9141ae500
              • Size 886B
              • SHA256 fd32b92f53d2a5032c8a36425d3e59e654339f9f7ad2c86f7320092fe632b993
              • MD5 SHA1 SHA512 TLSH

              09d46523-a56f-4f1c-b7fc-3a425e2aee8b

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\pending_pings\09d46523-a56f-4f1c-b7fc-3a425e2aee8b
              • Size 235B
              • SHA256 044bcd5b1a13ea16505be9d9310eaf61b4d28eec475308e35dae2383c98d3e78
              • MD5 SHA1 SHA512 TLSH

              26a6a829-c0cc-4958-a2b1-9796919b01ff

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\pending_pings\26a6a829-c0cc-4958-a2b1-9796919b01ff
              • Size 2KB
              • SHA256 6e9f59603e87a81988f1cc8af8e6e0e445e4816f1f6d9c59f12ee90083647860
              • MD5 SHA1 SHA512 TLSH

              431ea950-77c3-42f4-b391-2737f62e456b

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\pending_pings\431ea950-77c3-42f4-b391-2737f62e456b
              • Size 16KB
              • SHA256 273c1c6b77b4a8e2666768d660b93eaf754efd697e54de38c41e195fc56f1291
              • MD5 SHA1 SHA512 SSDEEP TLSH

              7cabdc27-0fdf-4657-af57-b05623a44be7

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\pending_pings\7cabdc27-0fdf-4657-af57-b05623a44be7
              • Size 883B
              • SHA256 d70875a825875bc34ad2f03e512e3b89b9884815af5d2bfe8c2325ba6e03ec56
              • MD5 SHA1 SHA512 TLSH

              cf012eb4-eb3f-4dd2-89bc-8df8fb309e90

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\datareporting\glean\pending_pings\cf012eb4-eb3f-4dd2-89bc-8df8fb309e90
              • Size 235B
              • SHA256 916a4d52a4180c0ca7c1da561e782f461f230dc66937e65babc31bb35f942ece
              • MD5 SHA1 SHA512 TLSH

              extensions.json

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\extensions.json
              • Size 16KB
              • SHA256 30ea8c33c78e05ebab8333d886300d0c34f7163c20702bdce60db4c89904ff2d
              • MD5 SHA1 SHA512 SSDEEP TLSH

              gmpopenh264.dll

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\gmp-gmpopenh264\2.6.0\gmpopenh264.dll
              • Size 1.1MB
              • SHA256 37c005a7789747b412d6c0a6a4c30d15732da3d857b4f94b744be1a67231b651
              • MD5 SHA1 SHA512 SSDEEP TLSH

              gmpopenh264.info

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\gmp-gmpopenh264\2.6.0\gmpopenh264.info
              • Size 116B
              • SHA256 fe7686a6281f0ab519c32c788ce0da0d01640425018dcffcfcb81105757f6fe6
              • MD5 SHA1 SHA512 TLSH

              manifest.json

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\gmp-widevinecdm\4.10.3050.0\manifest.json
              • Size 1002B
              • SHA256 2894996540fabbd346ed4ced8386ca77d6badf60372e307ee15c906c30340d0d
              • MD5 SHA1 SHA512 TLSH

              widevinecdm.dll

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\gmp-widevinecdm\4.10.3050.0\widevinecdm.dll
              • Size 21.6MB
              • SHA256 f1216e26ee8c27f938d7722427d29f190e569ed83d0ba16ea872cae684b97602
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs-1.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\prefs-1.js
              • Size 6KB
              • SHA256 c4617768c74c40c13dd1688791ecf58000cf40be4113834b0c1a03a089782324
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs-1.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\prefs-1.js
              • Size 7KB
              • SHA256 9063951c198be686114656df16368ec581158c8e94c16fa9b2c3d997f59dc3eb
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\prefs.js
              • Size 6KB
              • SHA256 42e355385fc4ecebc2e899fb3c68a74163954993f02f027fffad1e0e1b971ba5
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\prefs.js
              • Size 7KB
              • SHA256 33846555e9ab8c2b324f888c4624bec8db9df4a6e0b92f9dc7410d99ed49c78c
              • MD5 SHA1 SHA512 SSDEEP TLSH

              recovery.baklz4

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\sessionstore-backups\recovery.baklz4
              • Size 2KB
              • SHA256 65a631cb7e8a412bb5031aed86db771bfed9911ffe52f87467cf00537de0ceda
              • MD5 SHA1 SHA512 TLSH

              recovery.jsonlz4

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\sessionstore-backups\recovery.jsonlz4
              • Size 2KB
              • SHA256 174b049b1f231dd39cafc00a858bf953f78bd0addcdf204bb243fb17024c690f
              • MD5 SHA1 SHA512 TLSH

              3870112724rsegmnoittet-es.sqlite

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\wg40zd9z.default-release\storage\permanent\chrome\idb\3870112724rsegmnoittet-es.sqlite
              • Size 5.0MB
              • SHA256 0de6544954f7cfa45d9151f44284d42e14902aa61284a213a4b5d2fa61f015a9
              • MD5 SHA1 SHA512 SSDEEP TLSH