Analysis

  • max time kernel
    141s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-08-2024 22:52

General

  • Target

    numuki-browser-web-setup.exe

  • Size

    645KB

  • MD5

    d5597d608723bc160bdef0be231c4df0

  • SHA1

    2f1b489918025bf7f7e6e5e076aebb0d3e3c17fd

  • SHA256

    2fb92cd068f5f815efed191c0f238889ef0fbe015e11c7449ee5d083c0e133d7

  • SHA512

    d841cef9442422781e151eda8d003412ba8d2dd7b43558a45134eefc44520fd7eb1b6c0290ff81bd5f9ac787418a9baf46846ed8951ef582105d0351196ad8e6

  • SSDEEP

    12288:Jgb1A7RKaDPNKT1zH3ptaR1sDfOQSvJqFZ6zMg1pPk:Jgb1iMaDu173pG1szLSvJwynzPk

Malware Config

Signatures

  • Blocklisted process makes network request 5 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 17 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Obfuscated Files or Information: Command Obfuscation 1 TTPs

    Adversaries may obfuscate content during command execution to impede detection.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 7 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\numuki-browser-web-setup.exe
    "C:\Users\Admin\AppData\Local\Temp\numuki-browser-web-setup.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3904
  • C:\Users\Admin\AppData\Local\Programs\numuki-browser\NuMuKi Browser.exe
    "C:\Users\Admin\AppData\Local\Programs\numuki-browser\NuMuKi Browser.exe"
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • Loads dropped DLL
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3580
    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\NuMuKi Browser.exe
      "C:\Users\Admin\AppData\Local\Programs\numuki-browser\NuMuKi Browser.exe" --type=gpu-process --field-trial-handle=1248,12867026936202019066,17285624783634840730,131072 --enable-features=WebComponentsV0Enabled --disable-features=CookiesWithoutSameSiteMustBeSecure,SameSiteByDefaultCookies,SpareRendererForSitePerProcess --gpu-preferences=MAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAQAAAAAAAAAAAAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAA= --mojo-platform-channel-handle=1620 /prefetch:2
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:4996
    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\NuMuKi Browser.exe
      "C:\Users\Admin\AppData\Local\Programs\numuki-browser\NuMuKi Browser.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1248,12867026936202019066,17285624783634840730,131072 --enable-features=WebComponentsV0Enabled --disable-features=CookiesWithoutSameSiteMustBeSecure,SameSiteByDefaultCookies,SpareRendererForSitePerProcess --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=2096 /prefetch:8
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      PID:528
    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\NuMuKi Browser.exe
      "C:\Users\Admin\AppData\Local\Programs\numuki-browser\NuMuKi Browser.exe" --type=renderer --field-trial-handle=1248,12867026936202019066,17285624783634840730,131072 --enable-features=WebComponentsV0Enabled --disable-features=CookiesWithoutSameSiteMustBeSecure,SameSiteByDefaultCookies,SpareRendererForSitePerProcess --lang=en-US --app-path="C:\Users\Admin\AppData\Local\Programs\numuki-browser\resources\app.asar" --enable-plugins --no-sandbox --no-zygote --background-color=#fff --enable-spellcheck --enable-websql --disable-electron-site-instance-overrides --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=3 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2320 /prefetch:1
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:2836
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -NoProfile -NonInteractive -InputFormat None -Command "Get-AuthenticodeSignature 'C:\Users\Admin\AppData\Local\numuki-browser-updater\pending\temp-numuki-browser-web-setup-1.0.4.exe' | ConvertTo-Json -Compress | ForEach-Object { [Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($_)) }"
      2⤵
      • Blocklisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2388
  • C:\Windows\System32\CompPkgSrv.exe
    C:\Windows\System32\CompPkgSrv.exe -Embedding
    1⤵
      PID:2332

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751
      Filesize

      717B

      MD5

      822467b728b7a66b081c91795373789a

      SHA1

      d8f2f02e1eef62485a9feffd59ce837511749865

      SHA256

      af2343382b88335eea72251ad84949e244ff54b6995063e24459a7216e9576b9

      SHA512

      bacea07d92c32078ca6a0161549b4e18edab745dd44947e5f181d28cc24468e07769d6835816cdfb944fd3d0099bde5e21b48f4966824c5c16c1801712303eb6

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751
      Filesize

      192B

      MD5

      f032d47af043affbcebd21176cac92eb

      SHA1

      a48908ebfb13e53329889c0d68b8b2359c5128c6

      SHA256

      2f4660247add83ce3fb6c7c274d72733bdc206932dc80a96cdee842d2af94055

      SHA512

      622040930a5e79865603d0b8edd371cc9ace0662ac699c5a56a3e08b1375eeeecf669a2488eac749cc9599b44593491f1bf95aa4e83f2b11cd2a16b233a2e1b8

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\D3DCompiler_47.dll
      Filesize

      4.3MB

      MD5

      7641e39b7da4077084d2afe7c31032e0

      SHA1

      2256644f69435ff2fee76deb04d918083960d1eb

      SHA256

      44422e6936dc72b7ac5ed16bb8bcae164b7554513e52efb66a3e942cec328a47

      SHA512

      8010e1cb17fa18bbf72d8344e1d63ded7cef7be6e7c13434fa6d8e22ce1d58a4d426959bdcb031502d4b145e29cb111af929fcbc66001111fbc6d7a19e8800a5

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\chrome_100_percent.pak
      Filesize

      121KB

      MD5

      06baf0ad34e0231bd76651203dba8326

      SHA1

      a5f99ecdcc06dec9d7f9ce0a8c66e46969117391

      SHA256

      5ae14147992a92548bcad76867dd88cdfcdb69d951c8720920cce6fb135e3189

      SHA512

      aff6616e56781ebb925a0ca146245ad3b2827250b32261c0c7c0d5b10b20a343a17fc3761c95d93104163e77b2eae3f1f9cbd3cb2b377f49b42bea39bdd09b91

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\chrome_200_percent.pak
      Filesize

      181KB

      MD5

      57c27201e7cd33471da7ec205fe9973c

      SHA1

      a8e7bce09c4cbdae2797611b2be8aeb5491036f9

      SHA256

      dd8146b2ee289e4d54a4a0f1fd3b2f61b979c6a2baaba96a406d96c3f4fdb33b

      SHA512

      57258aa169bec66abf0f45a3e026bb68751fb970b74bd0cb465607fa3b2a89967e832d92d8f675f0449bb6662fcb7786d05f0597124cc8e18bb99a47245779b4

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\ffmpeg.dll
      Filesize

      2.7MB

      MD5

      ca1e9188314b549b2bc414374de331ad

      SHA1

      9a303a7ddbf987bc75e8c6d7bd9dc2618dbd178c

      SHA256

      c3696321555dc6a419ae3e1ebcc0efcfb1478f8c0b62f486a0c500eb87a04428

      SHA512

      ce37dc1619c45a1074a77ad2a8948ecde0779fe207e309062082055b8f9aa17b483ee6f4704c024e3c3da5a594ffded360b1d9af3db3dc01f251840926a400db

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\icudtl.dat
      Filesize

      10.0MB

      MD5

      03205e5952ea7b803839ecfe3bb000d6

      SHA1

      74146e76e31fd1e75ae1c34fa8194bc291b34a40

      SHA256

      8364e6c6bf5744357199de0de3f6ba30846ccda70288675b75059e6fd52241f3

      SHA512

      badb8843f9a483329cc4f559f95bd07a8cc1f9383e0e67dddacf74e586541067ca452a7fc28b63dcd28edc434c3be8ddc733dcbad0e06d973dafc99242f0b192

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\libGLESv2.dll
      Filesize

      7.3MB

      MD5

      0ffa06f556b856c502b10caf98714078

      SHA1

      1d0f8a2904f8a819f4bb07db9a48c41d003bd4c7

      SHA256

      5e7ec884ac58b0db5383aa531900e9545026b48fae6c486d89247560a457600e

      SHA512

      37d9818c05db665674376c7b568553f6809e99885c3fda5a06b8e25869cc9a672976e3684c32ccec520a7725a55b36f7dc56c3938e8c67a8edf76c641f279c7e

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\libegl.dll
      Filesize

      438KB

      MD5

      4f9208baf2a056ec9c131556693fd8f5

      SHA1

      63073f59d0f2175bcb6c169a05a9b40d31e3df02

      SHA256

      49ede4fcf943b53f4bccaa534f8ff26865596a94464dbce2346e9ed9c1554ebb

      SHA512

      c34faf7b4197429cc2e5600ca307acad3bc0cf1ce99f217e2e663ac8ef284df58f80510a31ec47f8a2b6f6460113a838b8f8036fa51e3a84c80684b71a97920b

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\locales\en-US.pak
      Filesize

      83KB

      MD5

      bd8f7b719110342b7cefb16ddd05ec55

      SHA1

      82a79aeaa1dd4b1464b67053ba1766a4498c13e7

      SHA256

      d1d3f892be16329c79f9a8ee8c5fa1c9fb46d17edfeb56a3d9407f9d7587a0de

      SHA512

      7cd1493e59e87c70927e66769eb200f79a57e1eb1223af4eb4064088571893d3e32cbc4b5ece568fd308992aad65684aa280dc9834f2b5d327bdee514b046e5e

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\resources.pak
      Filesize

      4.8MB

      MD5

      4a02ddf1a1411f3be0a673de2671e819

      SHA1

      96633258e8cab893a2b23829c478a3964eca286e

      SHA256

      dd4de24e13282fd3fab3b4d24c5eea555d7554ff10c02b0f439f5e8ce4e9f75d

      SHA512

      da22de8e2d9a45ffd2edecd01b1af92d9d7186a31b5a02481e461ea1f7fa0a37c8b524d89d6b5d09284765695b519360356dbdb188e336908496785a48833653

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\resources\app-update.yml
      Filesize

      141B

      MD5

      8a7503f4421fb7590e57219cdde6fff7

      SHA1

      9355d387b5a8ecfb414e5e214090ba45641a038b

      SHA256

      18bc7fd26a7a7705023a34e5092b9994be2ecedd3be7f963b3a597a0d18d302d

      SHA512

      777e6eaece65d4ef36f1104113686075fd7fd6b71ad8938ef414242bcf6a439d08d5b507249f1ee4433ec1069f4a975bec0661b1182d7a187fb99cfe9f2d2102

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\resources\app.asar
      Filesize

      1.8MB

      MD5

      e1ee5d7aab540af8beac15f6a94cd9af

      SHA1

      b6b35b7e3facffce581e82d8186c0d024c775762

      SHA256

      3c9aad17021cc6d74d8e8aab793fe2033a3b70e65a16d429e6b89d26847accc1

      SHA512

      d85e661b33071ba5fe861d71b4161e7eb4842aff19baeffa77d3709bd8a82f26fb43ade3a2c7fa5c1b11462cd7a0224900636d4c1e38dbba7eb1fdfe52596c4d

    • C:\Users\Admin\AppData\Local\Programs\numuki-browser\v8_context_snapshot.bin
      Filesize

      168KB

      MD5

      ae1c494f86526c45da8f1446159080d9

      SHA1

      7bb12b3c1b4c9c344afd265b53370d90582069e5

      SHA256

      59170b40e9acae9f4a524f6f5e690adae82b8ae2f90549d8e3339f8567cfadbc

      SHA512

      fd7aee998b0aa9d2a57a392f8051cb00bfb24a9395395b618f3d6d8edefeffdd9eed0449ed674cc2a03e8bfe5dd1f2f24d7ca9e343059f913b0b29ebd8f06a31

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_llpqc5ut.0sy.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\nsyCD73.tmp\INetC.dll
      Filesize

      238KB

      MD5

      38caa11a462b16538e0a3daeb2fc0eaf

      SHA1

      c22a190b83f4b6dc0d6a44b98eac1a89a78de55c

      SHA256

      ed04a4823f221e9197b8f3c3da1d6859ff5b176185bde2f1c923a442516c810a

      SHA512

      777135e05e908ac26bfce0a9c425b57f7132c1cdb0969bbb6ef625748c868860602bacc633c61cab36d0375b94b6bcfbd8bd8c7fa781495ef7332e362f8d44d1

    • C:\Users\Admin\AppData\Local\Temp\nsyCD73.tmp\SpiderBanner.dll
      Filesize

      9KB

      MD5

      17309e33b596ba3a5693b4d3e85cf8d7

      SHA1

      7d361836cf53df42021c7f2b148aec9458818c01

      SHA256

      996a259e53ca18b89ec36d038c40148957c978c0fd600a268497d4c92f882a93

      SHA512

      1abac3ce4f2d5e4a635162e16cf9125e059ba1539f70086c2d71cd00d41a6e2a54d468e6f37792e55a822d7082fb388b8dfecc79b59226bbb047b7d28d44d298

    • C:\Users\Admin\AppData\Local\Temp\nsyCD73.tmp\StdUtils.dll
      Filesize

      100KB

      MD5

      c6a6e03f77c313b267498515488c5740

      SHA1

      3d49fc2784b9450962ed6b82b46e9c3c957d7c15

      SHA256

      b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

      SHA512

      9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

    • C:\Users\Admin\AppData\Local\Temp\nsyCD73.tmp\System.dll
      Filesize

      12KB

      MD5

      0d7ad4f45dc6f5aa87f606d0331c6901

      SHA1

      48df0911f0484cbe2a8cdd5362140b63c41ee457

      SHA256

      3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

      SHA512

      c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

    • C:\Users\Admin\AppData\Local\Temp\nsyCD73.tmp\WinShell.dll
      Filesize

      3KB

      MD5

      1cc7c37b7e0c8cd8bf04b6cc283e1e56

      SHA1

      0b9519763be6625bd5abce175dcc59c96d100d4c

      SHA256

      9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

      SHA512

      7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

    • C:\Users\Admin\AppData\Local\Temp\nsyCD73.tmp\nsProcess.dll
      Filesize

      4KB

      MD5

      f0438a894f3a7e01a4aae8d1b5dd0289

      SHA1

      b058e3fcfb7b550041da16bf10d8837024c38bf6

      SHA256

      30c6c3dd3cc7fcea6e6081ce821adc7b2888542dae30bf00e881c0a105eb4d11

      SHA512

      f91fcea19cbddf8086affcb63fe599dc2b36351fc81ac144f58a80a524043ddeaa3943f36c86ebae45dd82e8faf622ea7b7c9b776e74c54b93df2963cfe66cc7

    • C:\Users\Admin\AppData\Local\Temp\nsyCD73.tmp\nsis7z.dll
      Filesize

      424KB

      MD5

      80e44ce4895304c6a3a831310fbf8cd0

      SHA1

      36bd49ae21c460be5753a904b4501f1abca53508

      SHA256

      b393f05e8ff919ef071181050e1873c9a776e1a0ae8329aefff7007d0cadf592

      SHA512

      c8ba7b1f9113ead23e993e74a48c4427ae3562c1f6d9910b2bbe6806c9107cf7d94bc7d204613e4743d0cd869e00dafd4fb54aad1e8adb69c553f3b9e5bc64df

    • C:\Users\Admin\AppData\Local\numuki-browser-updater\pending\temp-numuki-browser-web-setup-1.0.4.exe
      Filesize

      645KB

      MD5

      4b8ea901c91444c80e8ad333d2ae86de

      SHA1

      767140025004bc6737b24ceb62c14934f5b85613

      SHA256

      827566406560636505d0efee8ac79963b5c2875844b4d6969cb175ef6f4b3fbb

      SHA512

      57bc541718aff8c52b7702185a47bed50f187a7f82a14d14c5acc372a7398c61c69854e7d4da7e6cba9bbbebf73b916ecfe00e119d12a8f46b0d4e5f24b66fe5

    • C:\Users\Admin\AppData\Roaming\Microsoft\Spelling\en-US\default.dic
      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Roaming\NuMuKi Browser\1fc75a6e-3eb8-44a3-a5cc-43ff273e37a5.tmp
      Filesize

      57B

      MD5

      58127c59cb9e1da127904c341d15372b

      SHA1

      62445484661d8036ce9788baeaba31d204e9a5fc

      SHA256

      be4b8924ab38e8acf350e6e3b9f1f63a1a94952d8002759acd6946c4d5d0b5de

      SHA512

      8d1815b277a93ad590ff79b6f52c576cf920c38c4353c24193f707d66884c942f39ff3989530055d2fade540ade243b41b6eb03cd0cc361c3b5d514cca28b50a

    • C:\Users\Admin\AppData\Roaming\NuMuKi Browser\Code Cache\js\index-dir\the-real-index
      Filesize

      48B

      MD5

      ce9dee9d4dc1dbed1a8f93c8d9084737

      SHA1

      e096dcd99a332e3da5287a5bfed16323bd8d9758

      SHA256

      c3e16a0ecd06f0a37838507a231776f71b3f1e0bde5a510afbfead6e8bd02295

      SHA512

      fcb93b1716315c8e2f90666e82d98cfb3a236b5027f51887c8fb58371492e985346bac087d2879d176d5b89d48b0ae562cfb7c936dc6405c6df37afe981f31e3

    • C:\Users\Admin\AppData\Roaming\NuMuKi Browser\Code Cache\js\index-dir\the-real-index
      Filesize

      120B

      MD5

      7faa9fc2e6b20e03eb21b0eafd226e34

      SHA1

      edcf4eb90c9be5fc1d5bfe8ddbab1fc588df02d7

      SHA256

      e6cd51c7c3541764291372aa8ab3bf93f338034335544fe2753959af2d3c4bfc

      SHA512

      931f801aec985c72231d8bb570f6128b455c73618aceee2fd79e7f51cb3899574595e81199dc72e26f9dcf4c3ecd3f13366df7e1307c78b1154808378e372b54

    • memory/2388-330-0x00000171FDD30000-0x00000171FDD52000-memory.dmp
      Filesize

      136KB

    • memory/2388-337-0x00000171FFB00000-0x00000171FFCC2000-memory.dmp
      Filesize

      1.8MB

    • memory/2388-373-0x0000017198930000-0x0000017198E58000-memory.dmp
      Filesize

      5.2MB

    • memory/4996-240-0x00007FFD0A3B0000-0x00007FFD0A3B1000-memory.dmp
      Filesize

      4KB