Analysis

  • user interaction
    yes
  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    23/04/2026, 07:49

General

  • Target
    http://zmcyelc4ebn7w5ly2kfc7hbhbchowczlzzvqhwmscrhmoa4bymtnvsad.onion
  • Sample260423-jnmxzaev71

Malware Config

Signatures

  • Drops desktop.ini file(s) 3 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • 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
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 9 IoCs
  • Suspicious use of SetWindowsHookEx 28 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:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url "http://zmcyelc4ebn7w5ly2kfc7hbhbchowczlzzvqhwmscrhmoa4bymtnvsad.onion"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5004
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url http://zmcyelc4ebn7w5ly2kfc7hbhbchowczlzzvqhwmscrhmoa4bymtnvsad.onion
      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:4972
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 2020 -prefsLen 27099 -prefMapHandle 2024 -prefMapSize 270279 -ipcHandle 2092 -initialChannelId {a7ecde4c-bc35-4c15-9a7e-73ef96d6cc3f} -parentPid 4972 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4972" -appDir "C:\Program Files\Mozilla Firefox\browser" - 1 gpu
        3⤵
          PID:6132
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 2500 -prefsLen 27135 -prefMapHandle 2504 -prefMapSize 270279 -ipcHandle 2516 -initialChannelId {462eb0e9-239d-4c79-8fc2-237685b4875a} -parentPid 4972 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4972" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 2 socket
          3⤵
            PID:1592
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 3800 -prefsLen 25164 -prefMapHandle 3804 -prefMapSize 270279 -jsInitHandle 3808 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 3816 -initialChannelId {b6247ec3-7127-46fb-a9c7-2b1afcd0c742} -parentPid 4972 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4972" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 3 tab
            3⤵
            • Checks processor information in registry
            PID:4620
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 3960 -prefsLen 27276 -prefMapHandle 3964 -prefMapSize 270279 -ipcHandle 4048 -initialChannelId {458dc9a5-1062-4059-b6f2-f07a904e4fc1} -parentPid 4972 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4972" -appDir "C:\Program Files\Mozilla Firefox\browser" - 4 rdd
            3⤵
              PID:2144
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 4296 -prefsLen 34775 -prefMapHandle 4300 -prefMapSize 270279 -jsInitHandle 4304 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 4312 -initialChannelId {f9428af0-c569-4faa-b15e-67c1e9a1a597} -parentPid 4972 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4972" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 5 tab
              3⤵
              • Checks processor information in registry
              PID:1256
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -sandboxingKind 0 -prefsHandle 4832 -prefsLen 35012 -prefMapHandle 4836 -prefMapSize 270279 -ipcHandle 4804 -initialChannelId {399e2964-37af-4dd9-9142-ac6656e4a475} -parentPid 4972 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4972" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 6 utility
              3⤵
              • Checks processor information in registry
              PID:220
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5156 -prefsLen 32952 -prefMapHandle 5160 -prefMapSize 270279 -jsInitHandle 5164 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5172 -initialChannelId {b5fc38e1-f7ab-4e7c-b719-4bafe42e227e} -parentPid 4972 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4972" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 7 tab
              3⤵
              • Checks processor information in registry
              PID:1304
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5344 -prefsLen 32952 -prefMapHandle 5348 -prefMapSize 270279 -jsInitHandle 5352 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5360 -initialChannelId {dcc0605a-09a0-40a8-892e-5582cfaf603d} -parentPid 4972 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4972" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 8 tab
              3⤵
              • Checks processor information in registry
              PID:2760
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5536 -prefsLen 32952 -prefMapHandle 5540 -prefMapSize 270279 -jsInitHandle 5544 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5552 -initialChannelId {800999e9-f8de-43e8-8d48-a62d5502f481} -parentPid 4972 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4972" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 9 tab
              3⤵
              • Checks processor information in registry
              PID:5732
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 2860 -prefsLen 35457 -prefMapHandle 4752 -prefMapSize 270279 -jsInitHandle 4760 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 3004 -initialChannelId {30e9eef9-0677-4f4a-9426-88ab154c7fc7} -parentPid 4972 -crashReporter "\\.\pipe\gecko-crash-server-pipe.4972" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 10 tab
              3⤵
              • Checks processor information in registry
              PID:5296

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              CD1C116DEEE8F4F97C1806976E10E7E2B349E486

              • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\uqk3a6df.default-release\cache2\entries\CD1C116DEEE8F4F97C1806976E10E7E2B349E486
              • Size 10KB
              • SHA256 098b31845591f02d10053bd8d519cca7019cb9a0278c58842a81aeef8b97902c
              • MD5 SHA1 SHA512 SSDEEP TLSH

              remote-settings-startup-bundle-

              • Path C:\Users\Admin\AppData\Local\Temp\remote-settings-startup-bundle-
              • Size 394KB
              • SHA256 3738e235320d4141253ce79e0b3fcc50e351d28911afec06c281621805097ea3
              • MD5 SHA1 SHA512 SSDEEP TLSH

              tmpaddon

              • Path C:\Users\Admin\AppData\Local\Temp\tmpaddon
              • Size 479KB
              • SHA256 c32efac42faf4b9878fb8917c5e71d89ff40de580c4f52f62e11c6cfab55167f
              • MD5 SHA1 SHA512 SSDEEP TLSH

              tmpaddon

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

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\datareporting\glean\db\data.safe.tmp
              • Size 7KB
              • SHA256 c31480902db1761b0a9ca0fa1d26dc8b6574ffcbb3ab93084ee5c79230e73fe9
              • MD5 SHA1 SHA512 SSDEEP TLSH

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\datareporting\glean\db\data.safe.tmp
              • Size 3KB
              • SHA256 3e25b0afc6fc6e763ea6aa3b28e77e89e92d8f111bc5bedc7387ef4b7c374b51
              • MD5 SHA1 SHA512 TLSH

              events

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\datareporting\glean\events\events
              • Size 1KB
              • SHA256 7120cd64d09b80bb412a202cf59b7bf4fbc2a66f4d7a70871d0263533a930001
              • MD5 SHA1 SHA512 TLSH

              278be03f-5738-424b-b0b7-ab1cde565b1b

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\datareporting\glean\pending_pings\278be03f-5738-424b-b0b7-ab1cde565b1b
              • Size 886B
              • SHA256 d21ab9403055df111a4084f72d3c062898eec5828c4a217a0d7450a01ea3dab3
              • MD5 SHA1 SHA512 TLSH

              3755b79b-3b0d-4c79-b296-6522835672bf

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\datareporting\glean\pending_pings\3755b79b-3b0d-4c79-b296-6522835672bf
              • Size 235B
              • SHA256 547664f511ae89836666dace9312c09ce4036032fe305f101a827b618f79bc76
              • MD5 SHA1 SHA512 TLSH

              87676247-9c0f-4112-8e97-48f80be8a020

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\datareporting\glean\pending_pings\87676247-9c0f-4112-8e97-48f80be8a020
              • Size 883B
              • SHA256 7b2db806f4b8394c19a20989c8957374c4ad0317054650657406f7b05b8403bb
              • MD5 SHA1 SHA512 TLSH

              aa168fe1-b03f-4ba9-aa18-95915e0fa902

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\datareporting\glean\pending_pings\aa168fe1-b03f-4ba9-aa18-95915e0fa902
              • Size 2KB
              • SHA256 a96ed12e156a3ccbb4dd774328a9e80b5f3689f9ee38a9f9f6169135d7a2b467
              • MD5 SHA1 SHA512 TLSH

              b1c82b70-d190-4723-b809-2b458b8094c1

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\datareporting\glean\pending_pings\b1c82b70-d190-4723-b809-2b458b8094c1
              • Size 16KB
              • SHA256 fffa9e991bdffcbb1ddb4e78094bbce589912f0a25bf707b8c44fc4a259ac300
              • MD5 SHA1 SHA512 SSDEEP TLSH

              bc1fef81-6bfd-4c72-9c50-0264254d20b7

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\datareporting\glean\pending_pings\bc1fef81-6bfd-4c72-9c50-0264254d20b7
              • Size 235B
              • SHA256 4ef7499b7b42e32e67c5e401a719842871d0abb64731ee0646c9908f20ac35a6
              • MD5 SHA1 SHA512 TLSH

              extensions.json

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\extensions.json
              • Size 16KB
              • SHA256 ddc68b1d143385ba7c8116515c42e67d81e9920cb4ebd0101c2782fd8abc6528
              • MD5 SHA1 SHA512 SSDEEP TLSH

              gmpopenh264.dll

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\gmp-gmpopenh264\2.3.2\gmpopenh264.dll
              • Size 1.1MB
              • SHA256 d88dd3bfc4a558bb943f3caa2e376da3942e48a7948763bf9a38f707c2cd0c1c
              • MD5 SHA1 SHA512 SSDEEP TLSH

              gmpopenh264.info

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\gmp-gmpopenh264\2.3.2\gmpopenh264.info
              • Size 116B
              • SHA256 4107f76ba1d9424555f4e8ea0acef69357dfff89dfa5f0ec72aa4f2d489b17bc
              • MD5 SHA1 SHA512 TLSH

              manifest.json

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\gmp-widevinecdm\4.10.2830.0\manifest.json
              • Size 1001B
              • SHA256 25a702dd5389cc7b077c6b4e06c1fad9bdea74a9c37453388986d093c277d827
              • MD5 SHA1 SHA512 TLSH

              widevinecdm.dll

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\gmp-widevinecdm\4.10.2830.0\widevinecdm.dll
              • Size 18.3MB
              • SHA256 eb98fa2cfe142976b33fc3e15cf38a391f079e01cf61a82577b15107a98dea02
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs-1.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\prefs-1.js
              • Size 8KB
              • SHA256 751df36461ee31e6701c95f20284ebbf16c6ac0532b9aa810ac89a904fb63c2e
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs-1.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\prefs-1.js
              • Size 7KB
              • SHA256 da16fc67462fe8e35bd9c47d763b12a77ee709a80c1d9f73c5dbfc3007a795fb
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs-1.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\prefs-1.js
              • Size 7KB
              • SHA256 1fd43897bc60bfbe52fdea6d3347dce4bfdea08cf81b077b26a54c889e83b6a9
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\prefs.js
              • Size 6KB
              • SHA256 ba24e7655ced544f9d65a1e60b762796670739246e4a769f6e1ba6f86fb5d1bd
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\prefs.js
              • Size 6KB
              • SHA256 e3beec61ef09b6e985db517d3730878d5de05d010bc50bd8e32d0ee2e4e3e310
              • MD5 SHA1 SHA512 SSDEEP TLSH

              recovery.baklz4

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\sessionstore-backups\recovery.baklz4
              • Size 7KB
              • SHA256 e67c37334c3024a75da4f4aa516ed9a7262ed513358b3e9390735b914b2218cb
              • MD5 SHA1 SHA512 SSDEEP TLSH

              recovery.baklz4

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\sessionstore-backups\recovery.baklz4
              • Size 7KB
              • SHA256 c25bb8795e3acc2b2669b33ce9106f1c1bf82d71dedac75ab7ecd9460a6f8afe
              • MD5 SHA1 SHA512 SSDEEP TLSH

              recovery.jsonlz4

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\sessionstore-backups\recovery.jsonlz4
              • Size 8KB
              • SHA256 b2eb4508cc88cae1abc9919b60dc0854eaa3bdc65288bd17a4017be1e9840a3f
              • MD5 SHA1 SHA512 SSDEEP TLSH

              3870112724rsegmnoittet-es.sqlite

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\uqk3a6df.default-release\storage\permanent\chrome\idb\3870112724rsegmnoittet-es.sqlite
              • Size 3.2MB
              • SHA256 b4a5c6411a2e4901b993f11076d533d44ce16592592191fe5e01899f80ea7621
              • MD5 SHA1 SHA512 SSDEEP TLSH