Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260130-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260130-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    11/05/2026, 14:16

General

  • Target
    http://cdn.polyfill.io
  • Sample260511-rlcm8ab161
Score
1/10

Malware Config

Signatures

  • Checks processor information in registry 2 TTPs 22 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 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 44 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 "http://cdn.polyfill.io"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4568
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url http://cdn.polyfill.io
      2⤵
      • 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:3416
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 1992 -prefsLen 27100 -prefMapHandle 1996 -prefMapSize 270279 -ipcHandle 2084 -initialChannelId {a41fdd5d-1c29-43a8-b67b-20e71d20eb10} -parentPid 3416 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3416" -appDir "C:\Program Files\Mozilla Firefox\browser" - 1 gpu
        3⤵
          PID:4812
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 2496 -prefsLen 27136 -prefMapHandle 2500 -prefMapSize 270279 -ipcHandle 2508 -initialChannelId {6809587b-ca06-4f85-8029-34b88837f734} -parentPid 3416 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3416" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 2 socket
          3⤵
            PID:4884
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 3920 -prefsLen 25164 -prefMapHandle 3924 -prefMapSize 270279 -jsInitHandle 3928 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 3936 -initialChannelId {50c3ebab-cf8e-4538-8aef-66b98ed580c8} -parentPid 3416 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3416" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 3 tab
            3⤵
            • Checks processor information in registry
            PID:5904
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 3968 -prefsLen 27277 -prefMapHandle 3956 -prefMapSize 270279 -ipcHandle 4156 -initialChannelId {a17a69fc-2c19-4f68-8204-32dedc2c160f} -parentPid 3416 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3416" -appDir "C:\Program Files\Mozilla Firefox\browser" - 4 rdd
            3⤵
              PID:5144
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 3164 -prefsLen 34776 -prefMapHandle 3224 -prefMapSize 270279 -jsInitHandle 3228 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 3412 -initialChannelId {7c76d906-3c55-4067-8477-9f8b40083f20} -parentPid 3416 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3416" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 5 tab
              3⤵
              • Checks processor information in registry
              PID:3120
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -sandboxingKind 0 -prefsHandle 5092 -prefsLen 35013 -prefMapHandle 5096 -prefMapSize 270279 -ipcHandle 5104 -initialChannelId {e5dddfc2-8f9c-4a03-a0c0-249842874211} -parentPid 3416 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3416" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 6 utility
              3⤵
              • Checks processor information in registry
              PID:5348
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5272 -prefsLen 32900 -prefMapHandle 5276 -prefMapSize 270279 -jsInitHandle 5280 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5288 -initialChannelId {3d1677bc-6e1a-4514-bffa-3b8ddd2a2e6c} -parentPid 3416 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3416" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 7 tab
              3⤵
              • Checks processor information in registry
              PID:2756
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5532 -prefsLen 32900 -prefMapHandle 5528 -prefMapSize 270279 -jsInitHandle 5524 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5512 -initialChannelId {6314fc6e-57c8-4361-8ef2-de62ed94ced9} -parentPid 3416 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3416" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 8 tab
              3⤵
              • Checks processor information in registry
              PID:4268
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5856 -prefsLen 32952 -prefMapHandle 5860 -prefMapSize 270279 -jsInitHandle 5864 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5872 -initialChannelId {4e5a7aad-7722-4f4b-85f5-e7f5b2a5884d} -parentPid 3416 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3416" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 9 tab
              3⤵
              • Checks processor information in registry
              PID:3392
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 6212 -prefsLen 32952 -prefMapHandle 6248 -prefMapSize 270279 -jsInitHandle 6344 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 6364 -initialChannelId {57ddd0f9-a8b2-48ac-b6e5-8f549533aed9} -parentPid 3416 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3416" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 10 tab
              3⤵
              • Checks processor information in registry
              PID:1616
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -sandboxingKind 1 -prefsHandle 6700 -prefsLen 35065 -prefMapHandle 6704 -prefMapSize 270279 -ipcHandle 6676 -initialChannelId {bfdfdf4f-28fd-4302-8df8-3f2d2a4821bb} -parentPid 3416 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3416" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 11 utility
              3⤵
              • Checks processor information in registry
              PID:3584

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              F58F0605C722D0D848D03D88AC8E3E50223F57B0

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\gr767auk.default-release\cache2\entries\F58F0605C722D0D848D03D88AC8E3E50223F57B0
              • Size 13KB
              • SHA256 daed448044e43a75312d0442d684cdfac4156c0f6f27612d047e2de0fd60d361
              • 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\gr767auk.default-release\datareporting\glean\db\data.safe.tmp
              • Size 5KB
              • SHA256 bb17527e9669cbf0eb9349985bc8e7d1b8cfc352d30c3455adbf7a09680c5f66
              • MD5 SHA1 SHA512 SSDEEP TLSH

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\datareporting\glean\db\data.safe.tmp
              • Size 7KB
              • SHA256 3d1a2ab01d71e9e6cd071d8dc8c0d57494e58fe2ca1bec21c24bd825a6e2ba72
              • MD5 SHA1 SHA512 SSDEEP TLSH

              events

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\datareporting\glean\events\events
              • Size 1KB
              • SHA256 9fbbc7a27672d620fa271ac4c758192b51ec19c99a11b47c51865cdf41b907b6
              • MD5 SHA1 SHA512 TLSH

              1caca58f-f738-4b24-a1ea-caffa8415219

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\datareporting\glean\pending_pings\1caca58f-f738-4b24-a1ea-caffa8415219
              • Size 235B
              • SHA256 1d365575814ce3b62d8f5462e4c81b265cfde28d8bf0af14c094ad5a8b4362d0
              • MD5 SHA1 SHA512 TLSH

              35944ff3-a62f-47c1-9d94-728b98bf2fff

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\datareporting\glean\pending_pings\35944ff3-a62f-47c1-9d94-728b98bf2fff
              • Size 235B
              • SHA256 abae4a63d0bc1bbdccb9ea77cb6b50ca4a0ec3709de77e8e12080be48775969b
              • MD5 SHA1 SHA512 TLSH

              7f046cd8-beec-4006-94cc-d9911c75f730

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\datareporting\glean\pending_pings\7f046cd8-beec-4006-94cc-d9911c75f730
              • Size 2KB
              • SHA256 262d9f9d7d3b0f72d088d790ca5da4f6d1fffb3f65240a0148817f22dd28eda4
              • MD5 SHA1 SHA512 TLSH

              9ac8d9bf-f66f-45cd-adea-c72e97856e0b

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\datareporting\glean\pending_pings\9ac8d9bf-f66f-45cd-adea-c72e97856e0b
              • Size 886B
              • SHA256 6b1fb52cc005c339e1fdb5d073e80636983131e65ca04534260536159560316a
              • MD5 SHA1 SHA512 TLSH

              aed65585-9745-497d-9216-09b17b667f0e

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\datareporting\glean\pending_pings\aed65585-9745-497d-9216-09b17b667f0e
              • Size 2KB
              • SHA256 4a934b5822fa133c08f6cce8ce687495f0e7bac36fcbd5e33c70bebc7ec05587
              • MD5 SHA1 SHA512 TLSH

              f0bc6fad-4a32-45ae-97e8-47e71c9a10c5

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\datareporting\glean\pending_pings\f0bc6fad-4a32-45ae-97e8-47e71c9a10c5
              • Size 883B
              • SHA256 fd824b7dde348baadf3c67a0608bb1aca933130aa6fde3d778116602229c9de4
              • MD5 SHA1 SHA512 TLSH

              extensions.json

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\extensions.json
              • Size 16KB
              • SHA256 3cb99f5a7c4d751720d334cfa5b720d7e44b8343ce4305ef03c7be6e5d3b727e
              • MD5 SHA1 SHA512 SSDEEP TLSH

              gmpopenh264.dll

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.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\gr767auk.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\gr767auk.default-release\gmp-widevinecdm\4.10.2934.0\manifest.json
              • Size 1001B
              • SHA256 25ac9b79df29fa869b4c9f4ca3bdbc3a85f6122f5a8efab5a1216d577099becc
              • MD5 SHA1 SHA512 TLSH

              widevinecdm.dll

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\gmp-widevinecdm\4.10.2934.0\widevinecdm.dll
              • Size 18.9MB
              • SHA256 875a76af5b19622842c9b37fe77dce10ee83f27adbdcfcde9c814d4e1226d023
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs-1.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\prefs-1.js
              • Size 7KB
              • SHA256 218fd92e7f95696ce870f406b5b5d8c4fde579ba361acdaf14fb3715a47a7e94
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\prefs.js
              • Size 6KB
              • SHA256 64bc1aa892d87cd34615dd45beb0e3a0772f323472d4a9f1f1679976b981951e
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\prefs.js
              • Size 6KB
              • SHA256 2f6755a9ff257edc482b03c7b8b10797900071dd223c58ab18a89ffb66fe1af2
              • MD5 SHA1 SHA512 SSDEEP TLSH

              recovery.baklz4

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\sessionstore-backups\recovery.baklz4
              • Size 1KB
              • SHA256 a2cf649aebc34404a389aadb9b2bdfb71c4c5a1ec97b514b85d7712e72cf3916
              • MD5 SHA1 SHA512 TLSH

              3870112724rsegmnoittet-es.sqlite

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\gr767auk.default-release\storage\permanent\chrome\idb\3870112724rsegmnoittet-es.sqlite
              • Size 3.6MB
              • SHA256 742007c23787efbfa66ec930b3004f9fa7998ea7813d6da948e09739198d4428
              • MD5 SHA1 SHA512 SSDEEP TLSH