Analysis

  • user interaction
    yes
  • max time kernel
    300s
  • max time network
    283s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    11/08/2026, 23:27

General

  • Target
    requirements.txt
  • Size 16B
  • Sample260811-3fjecseq5x
  • SHA256 f87660a5228087f71da4ef7adbfed11fc6049d3da9a9d2b7af14051c9bb6741f
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Drops desktop.ini file(s) 3 IoCs
  • Checks processor information in registry 2 TTPs 20 IoCs

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

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 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:\Windows\system32\NOTEPAD.EXE
    C:\Windows\system32\NOTEPAD.EXE C:\Users\Admin\AppData\Local\Temp\requirements.txt
    1⤵
    • Opens file in notepad (likely ransom note)
    PID:1956
  • C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe"
      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:4880
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 1996 -prefsLen 27100 -prefMapHandle 2000 -prefMapSize 270279 -ipcHandle 2088 -initialChannelId {5ffe0839-b03e-4e22-b7b9-1fa635c40756} -parentPid 4880 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4880" -appDir "C:\Program Files\Mozilla Firefox\browser" - 1 gpu
        3⤵
          PID:4216
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 2448 -prefsLen 27136 -prefMapHandle 2452 -prefMapSize 270279 -ipcHandle 2460 -initialChannelId {85ebf315-a59c-49d6-b49c-5b5b73261f67} -parentPid 4880 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4880" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 2 socket
          3⤵
            PID:5328
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 3688 -prefsLen 27277 -prefMapHandle 3692 -prefMapSize 270279 -jsInitHandle 3696 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 3700 -initialChannelId {e193d0f7-db13-4918-a766-835549ae1978} -parentPid 4880 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4880" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 3 tab
            3⤵
            • Checks processor information in registry
            PID:2180
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 3852 -prefsLen 27277 -prefMapHandle 3856 -prefMapSize 270279 -ipcHandle 3940 -initialChannelId {8426b0e1-4e41-424c-9057-ec178fbe1f60} -parentPid 4880 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4880" -appDir "C:\Program Files\Mozilla Firefox\browser" - 4 rdd
            3⤵
              PID:6108
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 4432 -prefsLen 34776 -prefMapHandle 4436 -prefMapSize 270279 -jsInitHandle 4440 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 4448 -initialChannelId {1dab9e7e-2cc9-4198-a150-25afb57a5c69} -parentPid 4880 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4880" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 5 tab
              3⤵
              • Checks processor information in registry
              PID:5540
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -sandboxingKind 0 -prefsHandle 4884 -prefsLen 34932 -prefMapHandle 4888 -prefMapSize 270279 -ipcHandle 4896 -initialChannelId {17372ed7-1138-4b5d-890f-3b7a8b5b4ccd} -parentPid 4880 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4880" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 6 utility
              3⤵
              • Checks processor information in registry
              PID:2592
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5252 -prefsLen 32952 -prefMapHandle 5244 -prefMapSize 270279 -jsInitHandle 5240 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5284 -initialChannelId {268655aa-7b12-45ea-9153-e7f394f09be8} -parentPid 4880 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4880" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 7 tab
              3⤵
              • Checks processor information in registry
              PID:3752
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5080 -prefsLen 32952 -prefMapHandle 5100 -prefMapSize 270279 -jsInitHandle 5088 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5244 -initialChannelId {9c348238-7360-4d2a-894c-efb54a0d7b93} -parentPid 4880 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4880" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 8 tab
              3⤵
              • Checks processor information in registry
              PID:5356
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5396 -prefsLen 32952 -prefMapHandle 5404 -prefMapSize 270279 -jsInitHandle 5408 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5420 -initialChannelId {07cc8f75-4f2e-45c3-8abc-7b7d5a5a9f67} -parentPid 4880 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4880" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 9 tab
              3⤵
              • Checks processor information in registry
              PID:2500
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 6372 -prefsLen 33031 -prefMapHandle 6312 -prefMapSize 270279 -jsInitHandle 6348 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5976 -initialChannelId {bf2c1f67-a904-4880-ad1c-e35c0ef37250} -parentPid 4880 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4880" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 10 tab
              3⤵
              • Checks processor information in registry
              PID:3488

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              10006

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\16loo4mf.default-release\cache2\doomed\10006
              • Size 29KB
              • SHA256 d956dabfcd9a028a21cfa9eb4f6af573b132596cbcd4a717c0fe6431a761f339
              • MD5 SHA1 SHA512 SSDEEP TLSH

              18480

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\16loo4mf.default-release\cache2\doomed\18480
              • Size 13KB
              • SHA256 80dfc0395766ae1e031575bc8d867103debc5edeb574c4a9becd15f514809002
              • MD5 SHA1 SHA512 SSDEEP TLSH

              22171

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\16loo4mf.default-release\cache2\doomed\22171
              • Size 29KB
              • SHA256 baa130f7af8cafd3fa449fe41ce8ab7b10b91d5edf28b1883fb24df8c1827109
              • MD5 SHA1 SHA512 SSDEEP TLSH

              26346

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\16loo4mf.default-release\cache2\doomed\26346
              • Size 30KB
              • SHA256 29dead49514a2bf181d8cd98d7b346ee0d7381f513a61fe0439b8e39fcc98995
              • MD5 SHA1 SHA512 SSDEEP TLSH

              3150

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\16loo4mf.default-release\cache2\doomed\3150
              • Size 20KB
              • SHA256 9d52d3bb74492a477609500e5b4b68088163371d7d6e9646eda4a7a2fd0714c2
              • MD5 SHA1 SHA512 SSDEEP TLSH

              771

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\16loo4mf.default-release\cache2\doomed\771
              • Size 29KB
              • SHA256 0001fb718909afa81886508399e21b25e74a4fa81ed7ad608d13c28973e49079
              • MD5 SHA1 SHA512 SSDEEP TLSH

              6F9D52BDC217C3050051CA1A75B9ED8D80B7FA25

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\16loo4mf.default-release\cache2\entries\6F9D52BDC217C3050051CA1A75B9ED8D80B7FA25
              • Size 98KB
              • SHA256 c564c8de92756079bcf8e26941dd2097b5a0777cdaea489870190c8b06a1ece4
              • MD5 SHA1 SHA512 SSDEEP TLSH

              BAD79F5EEC0437AC70AB9FDE14FB4A1F1AEA9682

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\16loo4mf.default-release\cache2\entries\BAD79F5EEC0437AC70AB9FDE14FB4A1F1AEA9682
              • Size 2.2MB
              • SHA256 8219d0e0ea1dd70e5367e8b325ad5fcdea15a510358c1afdd3f061cfab8f9e69
              • MD5 SHA1 SHA512 SSDEEP TLSH

              C9DC5718FF3DB29DD4489BBBE60AF0F8B85EF7B5

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\16loo4mf.default-release\cache2\entries\C9DC5718FF3DB29DD4489BBBE60AF0F8B85EF7B5
              • Size 1.6MB
              • SHA256 5c7c641439a38d6b1c384343a055359fd46df3e74f0d4752be3352a0fe6a325c
              • MD5 SHA1 SHA512 SSDEEP TLSH

              D754CD72FA20A7572A4D6DC5BE013EB253C9BCB1

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\16loo4mf.default-release\cache2\entries\D754CD72FA20A7572A4D6DC5BE013EB253C9BCB1
              • Size 29KB
              • SHA256 22313bcd084dc8642bdc1d27e0630cc32f22f1d4edea0ad512ab9079d8354a93
              • 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

              FLHZ2F2GPB6FHDWIFRS2.temp

              • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\FLHZ2F2GPB6FHDWIFRS2.temp
              • Size 13KB
              • SHA256 ed4982d87ff2946e6eb9c765bae6550229225a019c9d8a1d98ba7282b8216b8c
              • MD5 SHA1 SHA512 SSDEEP TLSH

              AlternateServices.bin

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\AlternateServices.bin
              • Size 10KB
              • SHA256 0460abbe5ffbb004ecd79e492244dc1a983e11edd39361d1f4bb53fbb11ebdeb
              • MD5 SHA1 SHA512 SSDEEP TLSH

              AlternateServices.bin

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\AlternateServices.bin
              • Size 12KB
              • SHA256 974d44eb696d62c50200e43a0afbfa45867fb6adf8e098379dd0cfed8c9c7808
              • MD5 SHA1 SHA512 SSDEEP TLSH

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\datareporting\glean\db\data.safe.tmp
              • Size 28KB
              • SHA256 4d1b966ba8b9a76299c15c02053c93dcb26abe83abdbabd82c0d03444ec7a5f9
              • MD5 SHA1 SHA512 SSDEEP TLSH

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\datareporting\glean\db\data.safe.tmp
              • Size 28KB
              • SHA256 6a2d6a76abd97e3adb4ea067612edcb305bbd8fc57bdd58992ca06d3043f1e91
              • MD5 SHA1 SHA512 SSDEEP TLSH

              events

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\datareporting\glean\events\events
              • Size 1KB
              • SHA256 024c5649670aa1f128ff5bd55adee36f7e7c275d104aef2ffe74583febb7fa83
              • MD5 SHA1 SHA512 TLSH

              47a33cff-b85b-4a9c-bb86-fbe86612fddc

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\datareporting\glean\pending_pings\47a33cff-b85b-4a9c-bb86-fbe86612fddc
              • Size 2KB
              • SHA256 3a7313c0606184586ef8f0dacfcd8087ad15f97155902b43737939708b542da4
              • MD5 SHA1 SHA512 TLSH

              52b63302-13c9-48a2-93e1-8c7fd5d7af54

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\datareporting\glean\pending_pings\52b63302-13c9-48a2-93e1-8c7fd5d7af54
              • Size 235B
              • SHA256 fcb485f50063eece64336c8a3d81e280047206d81b7c1ccd00f36e5073a3dfd0
              • MD5 SHA1 SHA512 TLSH

              5c0d6bd6-0c51-407f-8a50-9fd7401bfff3

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\datareporting\glean\pending_pings\5c0d6bd6-0c51-407f-8a50-9fd7401bfff3
              • Size 871B
              • SHA256 6cbbeb172da030a0a4d1cf2604cb9db0038712e1749885fcce893c1e381b27a6
              • MD5 SHA1 SHA512 TLSH

              b1eff079-6ec0-4fc0-8773-38172cb820bb

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\datareporting\glean\pending_pings\b1eff079-6ec0-4fc0-8773-38172cb820bb
              • Size 886B
              • SHA256 6feef5f6cf6cc801391cdf406fed4c02d1f3cc3ec9dbf883d96621c7c35e8c2d
              • MD5 SHA1 SHA512 TLSH

              f5307002-7b60-4732-9f09-c9eabdfc0d3b

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\datareporting\glean\pending_pings\f5307002-7b60-4732-9f09-c9eabdfc0d3b
              • Size 235B
              • SHA256 82b26d6f13a905b012905d02808d5ada26c3914659ac35aeb5afdcf808356272
              • MD5 SHA1 SHA512 TLSH

              extensions.json

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\extensions.json
              • Size 16KB
              • SHA256 c1ca7500e05dacfe7ec64f48d9c5cf602f8f20f1d670843f2da8d7b1218cb52c
              • MD5 SHA1 SHA512 SSDEEP TLSH

              gmpopenh264.dll

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.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\16loo4mf.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\16loo4mf.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\16loo4mf.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\16loo4mf.default-release\prefs-1.js
              • Size 6KB
              • SHA256 eb515f6141ef212537d1e0c9ef40e726e563df4c7818005eb11864946888c364
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs-1.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\prefs-1.js
              • Size 7KB
              • SHA256 ab0d589a5981ac173dcf86f38ace014a044a2ba5966992fd299bd6a32a358807
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs-1.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\prefs-1.js
              • Size 7KB
              • SHA256 1c5f0eeb7f6d93859e4e685a091a638c97564fefe3a430fd644e0501fee6f0f5
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\prefs.js
              • Size 6KB
              • SHA256 8a43c4c1ff06233c52e367a75d3f5d3ebf2a5d9456bb78639864c60e2d9d464b
              • MD5 SHA1 SHA512 SSDEEP TLSH

              recovery.baklz4

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\sessionstore-backups\recovery.baklz4
              • Size 4KB
              • SHA256 12526e3ae29c51319f2908ab182f84ae7c5a49cc583f737f5016ddb9bf8ad6b6
              • MD5 SHA1 SHA512 SSDEEP TLSH

              recovery.baklz4

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\sessionstore-backups\recovery.baklz4
              • Size 4KB
              • SHA256 8371c3555f3f1feda25680e59911b730d556e2d343e6b221913d84326528db79
              • MD5 SHA1 SHA512 SSDEEP TLSH

              recovery.jsonlz4

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\sessionstore-backups\recovery.jsonlz4
              • Size 1KB
              • SHA256 cef2e42980067d4246c1d08f0d88b4d4c0ef1f18a5df318a08a48644f1f066f2
              • MD5 SHA1 SHA512 TLSH

              3870112724rsegmnoittet-es.sqlite

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\16loo4mf.default-release\storage\permanent\chrome\idb\3870112724rsegmnoittet-es.sqlite
              • Size 4.2MB
              • SHA256 1496fc2593f156188f0c9da805f515f9b1371dc139ea151244005b72202ad34e
              • MD5 SHA1 SHA512 SSDEEP TLSH