Analysis

  • user interaction
    yes
  • max time kernel
    150s
  • max time network
    140s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260911-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260911-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    17/10/2026, 05:15

General

  • Target
    Monoxidex64.exe
  • Size 330KB
  • Sample261017-fxk8ysxthy
  • SHA256 ae9405b9556c24389ee359993f45926a895481c8d60d98b91a3065f5c026cffe
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • 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 2 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 37 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:\Users\Admin\AppData\Local\Temp\Monoxidex64.exe
    "C:\Users\Admin\AppData\Local\Temp\Monoxidex64.exe"
    1⤵
      PID:1876
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:4884
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe"
        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:2236
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 1980 -prefsLen 27100 -prefMapHandle 1984 -prefMapSize 270279 -ipcHandle 2072 -initialChannelId {b243bd3f-1acc-4cc5-b64f-283c225870a5} -parentPid 2236 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2236" -appDir "C:\Program Files\Mozilla Firefox\browser" - 1 gpu
          3⤵
            PID:3280
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 2436 -prefsLen 27136 -prefMapHandle 2440 -prefMapSize 270279 -ipcHandle 2448 -initialChannelId {43842fe8-29a9-4fd9-84ad-077e564be3c5} -parentPid 2236 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2236" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 2 socket
            3⤵
            • Checks processor information in registry
            PID:4396
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 3920 -prefsLen 27277 -prefMapHandle 3924 -prefMapSize 270279 -jsInitHandle 3928 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 3936 -initialChannelId {ddf175f1-b4d7-4992-976e-e2c0ae7592ba} -parentPid 2236 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2236" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 3 tab
            3⤵
            • Checks processor information in registry
            PID:2112
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 4084 -prefsLen 27277 -prefMapHandle 4088 -prefMapSize 270279 -ipcHandle 4108 -initialChannelId {6215f05a-997a-4e5d-b437-c9a8648ee1a8} -parentPid 2236 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2236" -appDir "C:\Program Files\Mozilla Firefox\browser" - 4 rdd
            3⤵
              PID:2168
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 3176 -prefsLen 34776 -prefMapHandle 3180 -prefMapSize 270279 -jsInitHandle 2632 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 4464 -initialChannelId {12d7c687-7da5-4b20-b8d0-70c268c6ebb9} -parentPid 2236 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2236" -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 4944 -prefsLen 35013 -prefMapHandle 4948 -prefMapSize 270279 -ipcHandle 4876 -initialChannelId {a5543171-d831-47b7-817a-090715be47b0} -parentPid 2236 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2236" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 6 utility
              3⤵
              • Checks processor information in registry
              PID:4628
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 4900 -prefsLen 32952 -prefMapHandle 4788 -prefMapSize 270279 -jsInitHandle 4888 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5116 -initialChannelId {09743272-a921-40a2-b762-a684bb167469} -parentPid 2236 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2236" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 7 tab
              3⤵
              • Checks processor information in registry
              PID:5684
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5392 -prefsLen 32952 -prefMapHandle 5396 -prefMapSize 270279 -jsInitHandle 5400 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 4896 -initialChannelId {a7c0b77c-18d6-4f59-887b-9e260f8272bb} -parentPid 2236 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2236" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 8 tab
              3⤵
              • Checks processor information in registry
              PID:5912
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5420 -prefsLen 32952 -prefMapHandle 5424 -prefMapSize 270279 -jsInitHandle 5428 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5400 -initialChannelId {7668d6ce-25be-4eb1-8f65-a5edc7a60733} -parentPid 2236 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2236" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 9 tab
              3⤵
              • Checks processor information in registry
              PID:5964
        • C:\Windows\System32\rundll32.exe
          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
          1⤵
            PID:5416
          • C:\Users\Admin\AppData\Local\Temp\Monoxidex64.exe
            "C:\Users\Admin\AppData\Local\Temp\Monoxidex64.exe"
            1⤵
            • Suspicious use of SetWindowsHookEx
            PID:1252
          • C:\Users\Admin\Desktop\Monoxidex64.exe
            "C:\Users\Admin\Desktop\Monoxidex64.exe"
            1⤵
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2116
            • C:\Users\Admin\AppData\Local\Temp\屹焛鎍歀庌鸊嚕还鹥糪蕈憔塌摒盄怄.exe
              "C:\Users\Admin\AppData\Local\Temp\屹焛鎍歀庌鸊嚕还鹥糪蕈憔塌摒盄怄.exe"
              2⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:4304

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

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                Downloads

                activity-stream.contile.json

                • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\iopj0gis.default-release\activity-stream.contile.json
                • Size 4KB
                • SHA256 a71102e1b641baed758777efb18d64f5b67f825e0bbdcaed67fd200b52b8709b
                • MD5 SHA1 SHA512 SSDEEP TLSH

                activity-stream.discovery_stream.json

                • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\iopj0gis.default-release\activity-stream.discovery_stream.json
                • Size 75KB
                • SHA256 2668ee855519386cab35332fa634a8a560b6a466d72f7978b0cd29ac6e189a00
                • MD5 SHA1 SHA512 SSDEEP TLSH

                activity-stream.weather_feed.json

                • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\iopj0gis.default-release\activity-stream.weather_feed.json
                • Size 14B
                • SHA256 1bead770ec2d7afc6ec1e9d35383f40ef676591e079dece21c38db17c5c24a20
                • MD5 SHA1 SHA512

                29036

                • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\iopj0gis.default-release\cache2\doomed\29036
                • Size 52B
                • SHA256 63474228d63282728282433d58d67175ccf2b551746f1336dcadfcb4f9889cd0
                • MD5 SHA1 SHA512 TLSH

                webext.sc.lz4

                • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\iopj0gis.default-release\startupCache\webext.sc.lz4
                • Size 105KB
                • SHA256 d71a11dc8e55e823f4d3f0021f92de4db52e8eba928b8f9d0f8614d009aea36d
                • MD5 SHA1 SHA512 SSDEEP TLSH

                屹焛鎍歀庌鸊嚕还鹥糪蕈憔塌摒盄怄.exe

                • Path C:\Users\Admin\AppData\Local\Temp\屹焛鎍歀庌鸊嚕还鹥糪蕈憔塌摒盄怄.exe
                • Size 330KB
                • SHA256 ae9405b9556c24389ee359993f45926a895481c8d60d98b91a3065f5c026cffe
                • MD5 SHA1 SHA512 SSDEEP TLSH

                屹焛鎍歀庌鸊嚕还鹥糪蕈憔塌摒盄怄.txt

                • Path C:\Users\Admin\AppData\Local\Temp\屹焛鎍歀庌鸊嚕还鹥糪蕈憔塌摒盄怄.txt
                • Size 260B
                • SHA256 691082e4666fe1a1d5a9762cc18804991e4eb6b59b685506da98269e34462ef0
                • MD5 SHA1 SHA512 TLSH

                data.safe.tmp

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\datareporting\glean\db\data.safe.tmp
                • Size 6KB
                • SHA256 bd506d1b3269995d347fd003aeba52829899a8d383f3ac17ddc310e1c8deb666
                • MD5 SHA1 SHA512 SSDEEP TLSH

                data.safe.tmp

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\datareporting\glean\db\data.safe.tmp
                • Size 7KB
                • SHA256 e0fc2151c52471878c7a7043bafb61ec420e9c88d6cf1860a3ef3d23a5e8c9d7
                • MD5 SHA1 SHA512 SSDEEP TLSH

                events

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\datareporting\glean\events\events
                • Size 1KB
                • SHA256 e3f8f6342ced98ffbf40a1c0a86d51c982de6f34fa3b8a63bd02dba6736da579
                • MD5 SHA1 SHA512 TLSH

                1d5bde95-cf93-44d8-802d-87daab3c52d4

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\datareporting\glean\pending_pings\1d5bde95-cf93-44d8-802d-87daab3c52d4
                • Size 235B
                • SHA256 b8b9e532639cc06c03efdacdccee2ad46b7543b310eb8db7d346ccfd7e401dcd
                • MD5 SHA1 SHA512 TLSH

                253de18d-2606-4528-8555-49e16c471c37

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\datareporting\glean\pending_pings\253de18d-2606-4528-8555-49e16c471c37
                • Size 15KB
                • SHA256 9def93b86c29c81d5f5866fac2bb6b822f6b3de169c8185508fb9bfc25c9797b
                • MD5 SHA1 SHA512 SSDEEP TLSH

                66b49947-2121-4162-bfce-4c29d7493a2b

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\datareporting\glean\pending_pings\66b49947-2121-4162-bfce-4c29d7493a2b
                • Size 235B
                • SHA256 49137dcec0f18cc3e528f8ac3c04b7fd9e8337787cead2a049f43a6f9ec741ea
                • MD5 SHA1 SHA512 TLSH

                7caf4e5c-95a8-42fb-841c-397c6119cc04

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\datareporting\glean\pending_pings\7caf4e5c-95a8-42fb-841c-397c6119cc04
                • Size 883B
                • SHA256 667ee63d565048aa78063f3982377706b0ac132c3f8c8d10f0ae2f5b9ec9b80b
                • MD5 SHA1 SHA512 TLSH

                e442b3af-a2c4-4a44-a728-fa309af5e738

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\datareporting\glean\pending_pings\e442b3af-a2c4-4a44-a728-fa309af5e738
                • Size 886B
                • SHA256 ac774e6a2f853a2e7c343a48471fc42265e8e5b9842d38c79440fcf898ce00e7
                • MD5 SHA1 SHA512 TLSH

                eb1cbd4a-bd64-4849-87c4-967f144fca21

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\datareporting\glean\pending_pings\eb1cbd4a-bd64-4849-87c4-967f144fca21
                • Size 2KB
                • SHA256 9b5f646a378c5e2ebe52b5272a7cd608671d2effcdc5077e6b345d84438e50e0
                • MD5 SHA1 SHA512 TLSH

                prefs-1.js

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\prefs-1.js
                • Size 6KB
                • SHA256 afc6d597478235c041bca27a2841abbb5c467e54df14f2551ccab1a2648a842a
                • MD5 SHA1 SHA512 SSDEEP TLSH

                prefs.js

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\prefs.js
                • Size 6KB
                • SHA256 aceff1f97fdd2177be582881c2db60d335d50c74d1d376df73178c1e010b0b79
                • MD5 SHA1 SHA512 SSDEEP TLSH

                prefs.js

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\prefs.js
                • Size 6KB
                • SHA256 5dda6e7cca2654f88c406611780835a6307ca000a65ac71d2d2f1c890659c99f
                • MD5 SHA1 SHA512 SSDEEP TLSH

                prefs.js

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\prefs.js
                • Size 6KB
                • SHA256 93b289b8f29555c1a27fda3aa6929b4f906b82959b4accb11c13f02524238d3b
                • MD5 SHA1 SHA512 SSDEEP TLSH

                sessionCheckpoints.json

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\sessionCheckpoints.json
                • Size 90B
                • SHA256 00ad9799527c3fd21f3a85012565eae817490f3e0d417413bf9567bb5909f6a2
                • MD5 SHA1 SHA512 TLSH

                sessionCheckpoints.json

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\sessionCheckpoints.json
                • Size 53B
                • SHA256 792955295ae9c382986222c6731c5870bd0e921e7f7e34cc4615f5cd67f225da
                • MD5 SHA1 SHA512 TLSH

                sessionCheckpoints.json

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\sessionCheckpoints.json
                • Size 146B
                • SHA256 7343d5a46e2fca762305a4f85c45484a49c1607ede8e8c4bd12bedd2327edb8d
                • MD5 SHA1 SHA512 TLSH

                sessionCheckpoints.json

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\sessionCheckpoints.json
                • Size 288B
                • SHA256 d1a98a30522d1bf882574df5ed2793bba5c4fdf0381788babea0846f6946745c
                • MD5 SHA1 SHA512 TLSH

                sessionCheckpoints.json

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\sessionCheckpoints.json
                • Size 122B
                • SHA256 72d74b596f7fc079d15431b51ce565a6465a40f5897682a94a3f1dd19b07959a
                • MD5 SHA1 SHA512 TLSH

                sessionCheckpoints.json.tmp

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\sessionCheckpoints.json.tmp
                • Size 288B
                • SHA256 cd55c4719a8aebec4e126b304fb179ce4467a8a7a9518f04c7aac700675d5c98
                • MD5 SHA1 SHA512 TLSH

                sessionstore.jsonlz4

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\sessionstore.jsonlz4
                • Size 1KB
                • SHA256 27c73f1589ce72e94dbcdecbfe9f1c67f595d6d207b005f23a1f793f5faa97e7
                • MD5 SHA1 SHA512 TLSH

                targeting.snapshot.json

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\targeting.snapshot.json
                • Size 3KB
                • SHA256 116d9565c8eee883779dd297e4b4caa073e14acf55501d3fdefe9a2db12fa1a9
                • MD5 SHA1 SHA512 TLSH

                xulstore.json

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\iopj0gis.default-release\xulstore.json
                • Size 141B
                • SHA256 ee835fb0473a58c8e27d88affd0027ce209c5acc178bc07dae73cca88d4a7c9f
                • MD5 SHA1 SHA512 TLSH

                memory/1252-430-0x00007FF78F860000-0x00007FF78F8BD000-memory.dmp