Analysis

  • max time kernel
    139s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240704-en
  • resource tags

    arch:x64arch:x86image:win11-20240704-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    09-07-2024 06:09

General

  • Target

    Kurome.Host/Kurome.Host.exe

  • Size

    119KB

  • MD5

    4fde0f80c408af27a8d3ddeffea12251

  • SHA1

    e834291127af150ce287443c5ea607a7ae337484

  • SHA256

    1b644cdb1c7247c07d810c0ea10bec34dc5600f3645589690a219de08cf2dedb

  • SHA512

    3693aeaa2cc276060b899f21f6f57f435b75fec5bcd7725b2dd79043b341c12ebc29bd43b287eb22a3e31fd2b50c4fa36bf020f9f3db5e2f75fe8cc747eca5f5

  • SSDEEP

    3072:KEdjrOO8+K46SgVE+mxzqT67iLRi/Gj81GUpYb:KjQjgPmxzq27iLRiuAPp

Score
1/10

Malware Config

Signatures

  • Checks processor information in registry 2 TTPs 6 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 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:\Users\Admin\AppData\Local\Temp\Kurome.Host\Kurome.Host.exe
    "C:\Users\Admin\AppData\Local\Temp\Kurome.Host\Kurome.Host.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4212
  • C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1268
    • 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 SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4524
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4524.0.520563074\233469439" -parentBuildID 20230214051806 -prefsHandle 1784 -prefMapHandle 1764 -prefsLen 22074 -prefMapSize 235121 -appDir "C:\Program Files\Mozilla Firefox\browser" - {bf3054bb-6ada-460b-865c-88607d8671e8} 4524 "\\.\pipe\gecko-crash-server-pipe.4524" 1864 20474a25b58 gpu
        3⤵
          PID:5060
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4524.1.1865323952\772188091" -parentBuildID 20230214051806 -prefsHandle 2360 -prefMapHandle 2348 -prefsLen 22110 -prefMapSize 235121 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {be726275-eb98-447e-b6df-94a43e21f63f} 4524 "\\.\pipe\gecko-crash-server-pipe.4524" 2388 20467d89058 socket
          3⤵
            PID:2260
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4524.2.1576088115\1267707368" -childID 1 -isForBrowser -prefsHandle 2952 -prefMapHandle 2968 -prefsLen 22148 -prefMapSize 235121 -jsInitHandle 1288 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {0f6cb59f-619d-422f-8e17-c21479261749} 4524 "\\.\pipe\gecko-crash-server-pipe.4524" 3124 204773e5e58 tab
            3⤵
              PID:2960
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4524.3.440988372\1359821291" -childID 2 -isForBrowser -prefsHandle 3568 -prefMapHandle 3564 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1288 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {faede58d-1b11-496c-a455-8ff1700ee81f} 4524 "\\.\pipe\gecko-crash-server-pipe.4524" 1264 2047a527958 tab
              3⤵
                PID:404
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4524.4.2062350806\302658184" -childID 3 -isForBrowser -prefsHandle 5100 -prefMapHandle 5116 -prefsLen 27695 -prefMapSize 235121 -jsInitHandle 1288 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {dbe31acb-ed7f-4471-9e39-af94d57cedd9} 4524 "\\.\pipe\gecko-crash-server-pipe.4524" 5132 2047b482958 tab
                3⤵
                  PID:1476
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4524.5.823058663\1569939135" -childID 4 -isForBrowser -prefsHandle 5252 -prefMapHandle 5248 -prefsLen 27695 -prefMapSize 235121 -jsInitHandle 1288 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {84449969-315b-4f8e-b5dd-2c510d98f19e} 4524 "\\.\pipe\gecko-crash-server-pipe.4524" 5296 2047cb7e658 tab
                  3⤵
                    PID:1436
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4524.6.359224112\135846622" -childID 5 -isForBrowser -prefsHandle 5552 -prefMapHandle 5548 -prefsLen 27695 -prefMapSize 235121 -jsInitHandle 1288 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {275f5876-22a1-44af-b2a9-38283d0ee667} 4524 "\\.\pipe\gecko-crash-server-pipe.4524" 5560 2047cb7d158 tab
                    3⤵
                      PID:4740
                    • C:\Program Files\Mozilla Firefox\firefox.exe
                      "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4524.7.1963895158\107214300" -childID 6 -isForBrowser -prefsHandle 3944 -prefMapHandle 3940 -prefsLen 27695 -prefMapSize 235121 -jsInitHandle 1288 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {7b83900b-8210-4e99-95e8-8a916a02aee9} 4524 "\\.\pipe\gecko-crash-server-pipe.4524" 2544 20467d77b58 tab
                      3⤵
                        PID:1004

                  Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  • C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\bj62taxj.default-release\activity-stream.discovery_stream.json.tmp

                    Filesize

                    25KB

                    MD5

                    616cab91a984d2ce8e1e8617204740b5

                    SHA1

                    13e4239fb7c8d3ff2175b40b6878d2c6c80c6ca8

                    SHA256

                    32e1a1ea81fca011e0028fcdc67cfb8353b030d5385e2865be7acb7239cd5398

                    SHA512

                    a404bf133eca05d81b9463019dd7816975df0ded5cb2581459204b15cee6c7344f7c9b098992b38d18d02bc85d0c4087f3816e00905a7d32dbc9a888b11a28ac

                  • C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\bj62taxj.default-release\activity-stream.discovery_stream.json.tmp

                    Filesize

                    26KB

                    MD5

                    268dca5c522cc5074625ebd5e9dd91cd

                    SHA1

                    555696e54f26e016ac1f164cce3c9a1ffa528ae2

                    SHA256

                    882621e2f2b283e24a14b8563cf5e55f716576500f8221c14e5451c93fa046b1

                    SHA512

                    dc7e69fa8b70f9fb59ce700940ece334ab0b23b39d14b0bd1b5817f2f20b3eb329d1aa093c0783e57ee760450685d69e6f7088a6b1d63cae745078cb4510de00

                  • C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\bj62taxj.default-release\cache2\entries\5CD1EBDF6B57F13C7E783CE5E6D8E9C44014FE1A

                    Filesize

                    13KB

                    MD5

                    0cffeb451fb1e2877dc8dcf8119604a3

                    SHA1

                    63187ef846b2e498292465f4a85cf83d2157be07

                    SHA256

                    0e0d812e43e128887e87f3c8bd85af77daf11ae58148800c5f15cbe1a6b82bce

                    SHA512

                    b78cea757cb9fc1c0457659da534ae5f7a7706ffdbcef27036f1edae964959eb6e0377d71af7d10b18526e67c7feac73ecf37a36aff697f1fb883d6a404f8be9

                  • 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\Mozilla\Firefox\Profiles\bj62taxj.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\bj62taxj.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\bj62taxj.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\bj62taxj.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\bj62taxj.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\bj62taxj.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\bj62taxj.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\bj62taxj.default-release\prefs-1.js

                    Filesize

                    7KB

                    MD5

                    1bc1f61ac72e25e7ea183270c4cca358

                    SHA1

                    7c8d0171c40662805dffa9f9c4dd2800d007744e

                    SHA256

                    d86797915835732c720cd8bcbb9c71d9eadd4063a4cdbeb3227457d2308e66df

                    SHA512

                    a96d2dc1c50d294f2bcbe70b2e052f17512db9b293e32c120b6a4873285e7ceeefd9b20610cc136ef93f1a83a60d5fcc15d2fa7a62ef6f34bd1b6e07d81c5956

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bj62taxj.default-release\prefs.js

                    Filesize

                    6KB

                    MD5

                    567124834d6eb742f91be03fe320484f

                    SHA1

                    6e6abf0ad5246d73d170abbd9cbe014c10415925

                    SHA256

                    50ebbf545e055fe07a15698766e56f701a333602a34c607a1cfc18c488acdf2a

                    SHA512

                    cec2dbdd6ea0b54372a4d4a08dd827a5981874b390417587d44fc070b2017991b5bbcf590ef23062435adb5ee4172e64fd4a447e6f47f5947de240d3180f9d56

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bj62taxj.default-release\prefs.js

                    Filesize

                    8KB

                    MD5

                    a74edeed401c858995893943604c1db5

                    SHA1

                    53d31a23884b1463829a66b3a1eadab196eb7d68

                    SHA256

                    bf531d1d5800baa3e8af86ca6954922ab2058dbaa526c9ee6fa7ae6e0edfcac0

                    SHA512

                    da49918c1123e84f126a4468ee205e4e8bc526456679e0034c8db017241578146d7064111680bbf65679ba5a659046bca0db411c43df8397a4d5a10f942eb68f

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bj62taxj.default-release\sessionstore-backups\recovery.jsonlz4

                    Filesize

                    1KB

                    MD5

                    7a97e15791037079444bd07589a44e67

                    SHA1

                    40644070dd05208610ad30e703820ec5840bea49

                    SHA256

                    a4eba85506139378fa06c47fb7b5464adf14ab73e2744788dd3385520bcd9186

                    SHA512

                    62f8ab0571bbbb1cbfb13c57c0f41845da3f20ca544aa981267046cca30f4cb5d7827418cd976d742c5b53d60e9c0b8b29a4668c03b5776217a03a1b02c763b4

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bj62taxj.default-release\sessionstore-backups\recovery.jsonlz4

                    Filesize

                    1KB

                    MD5

                    49e62dd2e437ca14c356590b3fe59c35

                    SHA1

                    6f0e6184628c43c8ce5287da425c501e27d01076

                    SHA256

                    2e2f7ab11c7b961a73a46fd752f91a0e6e89b8db7f00c1458740056b8c26b0d6

                    SHA512

                    91570dbd65f11b2a8bd38389d1761a17d511f3f79abdc55743208627435a703bcd01288a5a2e771fd8c0923a37192fd2b6be85190274f3f11c21295f2c41db41

                  • memory/4212-13-0x0000000005050000-0x00000000050A0000-memory.dmp

                    Filesize

                    320KB

                  • memory/4212-0-0x0000000074A2E000-0x0000000074A2F000-memory.dmp

                    Filesize

                    4KB

                  • memory/4212-6-0x00000000054D0000-0x0000000005AE8000-memory.dmp

                    Filesize

                    6.1MB

                  • memory/4212-15-0x0000000074A20000-0x00000000751D1000-memory.dmp

                    Filesize

                    7.7MB

                  • memory/4212-14-0x0000000074A2E000-0x0000000074A2F000-memory.dmp

                    Filesize

                    4KB

                  • memory/4212-4-0x0000000074A20000-0x00000000751D1000-memory.dmp

                    Filesize

                    7.7MB

                  • memory/4212-3-0x0000000004C50000-0x0000000004C76000-memory.dmp

                    Filesize

                    152KB

                  • memory/4212-5-0x0000000074A20000-0x00000000751D1000-memory.dmp

                    Filesize

                    7.7MB

                  • memory/4212-2-0x0000000074A20000-0x00000000751D1000-memory.dmp

                    Filesize

                    7.7MB

                  • memory/4212-7-0x0000000004D30000-0x0000000004D42000-memory.dmp

                    Filesize

                    72KB

                  • memory/4212-1-0x0000000000210000-0x0000000000234000-memory.dmp

                    Filesize

                    144KB

                  • memory/4212-12-0x0000000004EE0000-0x0000000004F08000-memory.dmp

                    Filesize

                    160KB

                  • memory/4212-11-0x0000000005160000-0x000000000526A000-memory.dmp

                    Filesize

                    1.0MB

                  • memory/4212-10-0x0000000004F80000-0x000000000504E000-memory.dmp

                    Filesize

                    824KB

                  • memory/4212-9-0x0000000004D50000-0x0000000004D9C000-memory.dmp

                    Filesize

                    304KB

                  • memory/4212-8-0x0000000004DB0000-0x0000000004DEC000-memory.dmp

                    Filesize

                    240KB