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Analysis

  • max time kernel
    300s
  • max time network
    302s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/04/2023, 13:00

General

  • Target

    https://nacalliance.com/flessd/blets/

Score
1/10

Malware Config

Signatures

  • Checks processor information in registry 2 TTPs 5 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 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" https://nacalliance.com/flessd/blets/
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4496
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe" https://nacalliance.com/flessd/blets/
      2⤵
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4776
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4776.0.256282110\1074561280" -parentBuildID 20221007134813 -prefsHandle 1852 -prefMapHandle 1844 -prefsLen 20890 -prefMapSize 232675 -appDir "C:\Program Files\Mozilla Firefox\browser" - {2b88e2b5-5f40-4a0b-8683-382e6f379112} 4776 "\\.\pipe\gecko-crash-server-pipe.4776" 1932 136d2916558 gpu
        3⤵
          PID:2660
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4776.1.2058631499\1558600633" -parentBuildID 20221007134813 -prefsHandle 2432 -prefMapHandle 2428 -prefsLen 21706 -prefMapSize 232675 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {c844a319-2da2-4aab-a4c1-3096f3f0ba2a} 4776 "\\.\pipe\gecko-crash-server-pipe.4776" 2444 136c4970458 socket
          3⤵
            PID:1564
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4776.2.954096551\427024760" -childID 1 -isForBrowser -prefsHandle 3176 -prefMapHandle 3040 -prefsLen 21789 -prefMapSize 232675 -jsInitHandle 1456 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {aa481ab5-4d69-494b-8c1d-fdc94828fd57} 4776 "\\.\pipe\gecko-crash-server-pipe.4776" 3244 136d575a758 tab
            3⤵
              PID:2036
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4776.3.1992702794\318481748" -childID 2 -isForBrowser -prefsHandle 4056 -prefMapHandle 4052 -prefsLen 26519 -prefMapSize 232675 -jsInitHandle 1456 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {db76e1bf-2925-4039-8a8a-5933119eda93} 4776 "\\.\pipe\gecko-crash-server-pipe.4776" 4068 136c4962558 tab
              3⤵
                PID:1280
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4776.4.640989604\1166763948" -childID 3 -isForBrowser -prefsHandle 4736 -prefMapHandle 4732 -prefsLen 26578 -prefMapSize 232675 -jsInitHandle 1456 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {4db4b7ee-058e-47df-a8fd-f1adb79b1fc2} 4776 "\\.\pipe\gecko-crash-server-pipe.4776" 4748 136d575b358 tab
                3⤵
                  PID:3796
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4776.5.1948451580\1952643436" -childID 4 -isForBrowser -prefsHandle 5000 -prefMapHandle 4996 -prefsLen 26578 -prefMapSize 232675 -jsInitHandle 1456 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {b8022ad3-9322-4cdb-aa07-63e023ad19c6} 4776 "\\.\pipe\gecko-crash-server-pipe.4776" 5008 136d7f9a658 tab
                  3⤵
                    PID:4820
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4776.6.1796503572\473200826" -childID 5 -isForBrowser -prefsHandle 4944 -prefMapHandle 4948 -prefsLen 26659 -prefMapSize 232675 -jsInitHandle 1456 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {e0e916ff-dc99-47fe-80ef-96155002c36e} 4776 "\\.\pipe\gecko-crash-server-pipe.4776" 4936 136d7f98e58 tab
                    3⤵
                      PID:5036

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\6exu9k4v.default-release\activity-stream.discovery_stream.json.tmp

                  Filesize

                  136KB

                  MD5

                  97a27c7b01dc7e532aba155e1ce8fa09

                  SHA1

                  c980b817fea8631bcc931fd61090bb1fb703d492

                  SHA256

                  9705c221ce768bc685317896d368f7d8cac70b2cdf748537ed8c0a404356aaaa

                  SHA512

                  604cab647b2e510a7e16a547e3c2394afbf5bab0b22640d6fcea64c4594463564701211f374c6e1099ef10409497dc04ebc4c673ea8e30da174e6fc096d9701d

                • C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\6exu9k4v.default-release\cache2\entries\A4BC0C99327D7691FF360F07D11373B5791EB30C

                  Filesize

                  14KB

                  MD5

                  220372a245c0a25b28179ea19f2d37de

                  SHA1

                  62457e2eff42046081be3d5b691b86fbe85e858d

                  SHA256

                  00c89610075cf8213eafcc8655a012cd23f2239b44e2bb358ca1db6f449436c6

                  SHA512

                  2b4d58ef0581d0e6e0784113652ed5ad94b0646e06907340cd5359360c91829eba351244381591592c7e4d98276ac2fe07fd9ac36948945587fedb72582e27c3

                • C:\Users\Admin\AppData\Local\Temp\tmpaddon

                  Filesize

                  442KB

                  MD5

                  85430baed3398695717b0263807cf97c

                  SHA1

                  fffbee923cea216f50fce5d54219a188a5100f41

                  SHA256

                  a9f4281f82b3579581c389e8583dc9f477c7fd0e20c9dfc91a2e611e21e3407e

                  SHA512

                  06511f1f6c6d44d076b3c593528c26a602348d9c41689dbf5ff716b671c3ca5756b12cb2e5869f836dedce27b1a5cfe79b93c707fd01f8e84b620923bb61b5f1

                • C:\Users\Admin\AppData\Local\Temp\tmpaddon-1

                  Filesize

                  8.0MB

                  MD5

                  a01c5ecd6108350ae23d2cddf0e77c17

                  SHA1

                  c6ac28a2cd979f1f9a75d56271821d5ff665e2b6

                  SHA256

                  345d44e3aa3e1967d186a43d732c8051235c43458169a5d7d371780a6475ee42

                  SHA512

                  b046dd1b26ec0b810ee441b7ad4dc135e3f1521a817b9f3db60a32976352e8f7e53920e1a77fc5b4130aac260d79deef7e823267b4414e9cc774d8bffca56a72

                • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\6824f4a902c78fbd.customDestinations-ms

                  Filesize

                  7KB

                  MD5

                  185aaa70406df67611b4bcbe5bab1568

                  SHA1

                  e8ab29150eaf8cde07e668bfcf3bd96dc18d3090

                  SHA256

                  634d1c468cf47350bbe725d507cc19429752cc599ba3f29b813a6bdbd8f78c89

                  SHA512

                  39064a101d8e0cc38ac5764f9fde91e08cea1fda5b43c985bd0c6a856355f0af43b454d8f603efd7db154af723bfe59eefbd4ed5a0886cfd81d9ea0eb35c1e48

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\gmp-gmpopenh264\1.8.1.2\gmpopenh264.dll

                  Filesize

                  997KB

                  MD5

                  fe3355639648c417e8307c6d051e3e37

                  SHA1

                  f54602d4b4778da21bc97c7238fc66aa68c8ee34

                  SHA256

                  1ed7877024be63a049da98733fd282c16bd620530a4fb580dacec3a78ace914e

                  SHA512

                  8f4030bb2464b98eccbea6f06eb186d7216932702d94f6b84c56419e9cf65a18309711ab342d1513bf85aed402bc3535a70db4395874828f0d35c278dd2eac9c

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\gmp-gmpopenh264\1.8.1.2\gmpopenh264.info

                  Filesize

                  116B

                  MD5

                  3d33cdc0b3d281e67dd52e14435dd04f

                  SHA1

                  4db88689282fd4f9e9e6ab95fcbb23df6e6485db

                  SHA256

                  f526e9f98841d987606efeaff7f3e017ba9fd516c4be83890c7f9a093ea4c47b

                  SHA512

                  a4a96743332cc8ef0f86bc2e6122618bfc75ed46781dadbac9e580cd73df89e74738638a2cccb4caa4cbbf393d771d7f2c73f825737cdb247362450a0d4a4bc1

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\gmp-widevinecdm\4.10.2557.0\LICENSE.txt

                  Filesize

                  479B

                  MD5

                  49ddb419d96dceb9069018535fb2e2fc

                  SHA1

                  62aa6fea895a8b68d468a015f6e6ab400d7a7ca6

                  SHA256

                  2af127b4e00f7303de8271996c0c681063e4dc7abdc7b2a8c3fe5932b9352539

                  SHA512

                  48386217dabf7556e381ab3f5924b123a0a525969ff98f91efb03b65477c94e48a15d9abcec116b54616d36ad52b6f1d7b8b84c49c204e1b9b43f26f2af92da2

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\gmp-widevinecdm\4.10.2557.0\manifest.json

                  Filesize

                  372B

                  MD5

                  8be33af717bb1b67fbd61c3f4b807e9e

                  SHA1

                  7cf17656d174d951957ff36810e874a134dd49e0

                  SHA256

                  e92d3394635edfb987a7528e0ccd24360e07a299078df2a6967ca3aae22fa2dd

                  SHA512

                  6125f60418e25fee896bf59f5672945cd8f36f03665c721837bb50adf5b4dfef2dddbfcfc817555027dcfa90e1ef2a1e80af1219e8063629ea70263d2fc936a7

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll

                  Filesize

                  11.8MB

                  MD5

                  33bf7b0439480effb9fb212efce87b13

                  SHA1

                  cee50f2745edc6dc291887b6075ca64d716f495a

                  SHA256

                  8ee42d9258e20bbc5bfdfae61605429beb5421ffeaaa0d02b86d4978f4b4ac4e

                  SHA512

                  d329a1a1d98e302142f2776de8cc2cd45a465d77cb21c461bdf5ee58c68073a715519f449cb673977288fe18401a0abcce636c85abaec61a4a7a08a16c924275

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll.lib

                  Filesize

                  1KB

                  MD5

                  688bed3676d2104e7f17ae1cd2c59404

                  SHA1

                  952b2cdf783ac72fcb98338723e9afd38d47ad8e

                  SHA256

                  33899a3ebc22cb8ed8de7bd48c1c29486c0279b06d7ef98241c92aef4e3b9237

                  SHA512

                  7a0e3791f75c229af79dd302f7d0594279f664886fea228cfe78e24ef185ae63aba809aa1036feb3130066deadc8e78909c277f0a7ed1e3485df3cf2cd329776

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll.sig

                  Filesize

                  1KB

                  MD5

                  937326fead5fd401f6cca9118bd9ade9

                  SHA1

                  4526a57d4ae14ed29b37632c72aef3c408189d91

                  SHA256

                  68a03f075db104f84afdd8fca45a7e4bff7b55dc1a2a24272b3abe16d8759c81

                  SHA512

                  b232f6cf3f88adb346281167ac714c4c4c7aac15175087c336911946d12d63d3a3a458e06b298b41a7ec582ef09fe238da3a3166ff89c450117228f7485c22d2

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\prefs-1.js

                  Filesize

                  6KB

                  MD5

                  ac192b32f120c251912c745343238e73

                  SHA1

                  ce76c515f2b500361f0b34eb23053d08d8029d86

                  SHA256

                  01ed849bcd996646731f40d40c25c329ba13e87f95c8a8825a0e568adc1b7964

                  SHA512

                  7451dd11221bcd899cb8b340a76d0efdc5ddd83c533cd84913a7ec83ee13acd72ce85a64867eb25cb605b68e8785f92cad396cc76942c0d0ae57574e0d5b2c99

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\prefs-1.js

                  Filesize

                  7KB

                  MD5

                  5fb7624da7782585eb168aa86099ab85

                  SHA1

                  3e152c022d8891ada2a0c8d4a75327a8bdc6b2ff

                  SHA256

                  27e4613df1085922fdfbc47fa1b00ed252167c389e5da712b331b6a7b499b431

                  SHA512

                  3ae5442b2147179a19bc8c15adddee6074167cf3f6c02f268759f8e76d78625c3548ebb0d6186f0a3d6d6110d7c7469e77e2641ce9cdd3c3d25f076644ada2a1

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\prefs-1.js

                  Filesize

                  7KB

                  MD5

                  ff29510aa94476ce7f40396f99916ed8

                  SHA1

                  0acb3dc5827c0f10bcfa984323352e34fd7d2b90

                  SHA256

                  f6b377dda9a367a11c2ed6e966272752f80ccfa3bb532c2414e10b9144362251

                  SHA512

                  a641aa415cf960d2f5bc5b5c918c1745fe20e4ef4452158d63d1a6d5c039faded8c771fb11eea8449d04db4f569225011b2190728db01f6afe5d2d969b3844ff

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\prefs-1.js

                  Filesize

                  7KB

                  MD5

                  2bfb216a3191f59f463093178baba439

                  SHA1

                  b26ffeee021cf9e77bb5eabbf537e9c396282062

                  SHA256

                  45e27b64d29b8ece697eb73f3dd00164cf87435d160234cd8a5d1fff9351c220

                  SHA512

                  fb77a38527e70f8ba2bbddea3cd085d6e8f0dcbb315558c641df78a2c4fa110b78c332c0b5ea978c908ac9d10be8a5bcf9447383f67b3184a7547fc35e0a20cb

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\prefs-1.js

                  Filesize

                  8KB

                  MD5

                  d7de678458feb6e70dd4abacc3a290df

                  SHA1

                  0cf1957b1d3d2125fe0d3e097d19bc8f41e81faf

                  SHA256

                  d676f27b1b5cb7489874ae04d334c979c7bb4dfad2a5f3db79b0acdb61641652

                  SHA512

                  d8c7fdd377855cbde68ba1c49e3f9695d489aecfdbdbd851280a452fd10e02d78525a905f4f3d2c5445d0da2c4776a543f89b34e8f44fc9c3bb53b5d3970d38c

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\prefs-1.js

                  Filesize

                  10KB

                  MD5

                  a1989f74f08b7f4552deff2892175c47

                  SHA1

                  6002a2ea3b99ba4bc9aef6e8ab3b087687ddeb1d

                  SHA256

                  99e6fbc3b00a703106ef8b16fcdf95ac987ff3fbfad164c121cee1e9d6c4748e

                  SHA512

                  2240f312ded17d2e146c76cfaf0303a8d5b040fd8e90160d3e51977da25f025fcc9a8eb9e1ac260cc562777f1a399e3a2471bb0449a0a3a5d124885e5419b50e

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\prefs-1.js

                  Filesize

                  6KB

                  MD5

                  8d8a4029c66fdcc4d5e814409a1146ba

                  SHA1

                  844ab698a2dc0d1e151138f57fbda00a5dbda7e2

                  SHA256

                  82dbfe9c2dc42174c98d5347300acda84fae4ccb81dba5d279b628200b2988c6

                  SHA512

                  e6fcff81d97d2a9b7c2b09e7fd9bc925c81681c4c797a995ae86754d95297bb178612b136eb91d8d7050ea313c61653c861a46d46349c3ffbec9b0c64cb573c9

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\prefs.js

                  Filesize

                  6KB

                  MD5

                  108b97b1ff7efbdb1aecce96d55ff2e5

                  SHA1

                  bb72b2e0c3d859fe5e821632307a32df331b55e1

                  SHA256

                  c5e19d4313b524fffc4859f4fac05ea3dcf408714a736dbd0bb7fcdf5131f80e

                  SHA512

                  e0f7678424e68957a1cb521786e9e4e54c179f9a263b04d0c6a96147cb1e242b58bda3e74e6f142dcd9b6dd313a0061c3050af334b149eab9a8040f923da84dc

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\sessionstore-backups\recovery.jsonlz4

                  Filesize

                  6KB

                  MD5

                  500060e627e8e96bbc1abf16f5eac6f4

                  SHA1

                  e1f5cc40431bf031383ffdaeed149a4e6dd247bf

                  SHA256

                  e246649c4797bbd760612599a5db1add81cf5e92acff338eafea77bfa94fc3e4

                  SHA512

                  622f5c5bbfca26ebd7e209e1d17647b99b93c073cebfcd9b0f70a067aeb17dbe7c978acca1c60649328b2a2fb2315fafb94f24b4a540077889b6be049460fd01

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\6exu9k4v.default-release\sessionstore-backups\recovery.jsonlz4

                  Filesize

                  6KB

                  MD5

                  89e01fb7a02a50045d7a5547737b456b

                  SHA1

                  197c967e8f4762053f4bceb26ef2da2d44bc7c18

                  SHA256

                  d191c4258f49c05c9e5cd4bf4dae293955cf448f7c447a7f074f158c47026294

                  SHA512

                  e23e4fb665f2f00d4ac88757c19c0137eccb687ecbe9de4b16404833c2f700732b1cbf48bee95ec1568ad2104df780bd8de29d524bd0d12d3cc148c64f19cffd