Analysis

  • max time kernel
    136s
  • max time network
    150s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20250314-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-x64system
  • submitted
    05/04/2025, 12:07

General

  • Target

    rihuata-main/huilter.exe

  • Size

    137KB

  • MD5

    dc823d0f1e80400cd6ac7d8e5f68819e

  • SHA1

    5731d56f9bd7caf2a49ede09deab89dad9f6cf4d

  • SHA256

    bb0e2fb8ac8b2a967cc699f5483d7b26714d23a0c4e45263afb8973c6d18bcf1

  • SHA512

    632388cd83ad40ce342c726fece6c3c423532d837b5743d3452a62beaed1eade4994e809464a018e7303860c751b7a688caea12f7495d4092edf30af654dca8a

  • SSDEEP

    3072:aVvH8RuVrLyEj/S2CUGACcceJd/klDHa/R8mxu3s8QsPu:KH8RuRLlzgUd6a/AslsPu

Malware Config

Signatures

  • Uses browser remote debugging 2 TTPs 8 IoCs

    Can be used control the browser and steal sensitive information such as credentials and session cookies.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in Windows directory 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates system info in registry 2 TTPs 6 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 14 IoCs
  • Suspicious use of FindShellTrayWindow 27 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\rihuata-main\huilter.exe
    "C:\Users\Admin\AppData\Local\Temp\rihuata-main\huilter.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5456
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --remote-debugging-port=9223 --profile-directory="Default"
      2⤵
      • Uses browser remote debugging
      • Drops file in Windows directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1116
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=133.0.6943.60 --initial-client-data=0x224,0x228,0x22c,0x1f8,0x230,0x7ffd5fa4dcf8,0x7ffd5fa4dd04,0x7ffd5fa4dd10
        3⤵
          PID:1488
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --string-annotations --field-trial-handle=504,i,11338258228441972621,16908823783254781872,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=2060 /prefetch:3
          3⤵
            PID:4752
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --string-annotations --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --field-trial-handle=2028,i,11338258228441972621,16908823783254781872,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=2024 /prefetch:2
            3⤵
              PID:4724
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --string-annotations --field-trial-handle=2412,i,11338258228441972621,16908823783254781872,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=2552 /prefetch:8
              3⤵
                PID:3328
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --remote-debugging-port=9223 --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3212,i,11338258228441972621,16908823783254781872,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=3284 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:4624
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --remote-debugging-port=9223 --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3220,i,11338258228441972621,16908823783254781872,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=3304 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:1008
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --extension-process --enable-dinosaur-easter-egg-alt-images --remote-debugging-port=9223 --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4208,i,11338258228441972621,16908823783254781872,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=4244 /prefetch:2
                3⤵
                • Uses browser remote debugging
                PID:5096
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --remote-debugging-port=9223 --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --field-trial-handle=4576,i,11338258228441972621,16908823783254781872,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=4668 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:2140
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --video-capture-use-gpu-memory-buffer --string-annotations --field-trial-handle=5360,i,11338258228441972621,16908823783254781872,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=5372 /prefetch:8
                3⤵
                  PID:4048
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --video-capture-use-gpu-memory-buffer --string-annotations --field-trial-handle=5368,i,11338258228441972621,16908823783254781872,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=5568 /prefetch:8
                  3⤵
                    PID:3920
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --remote-debugging-port=9223 --profile-directory="Default"
                  2⤵
                  • Uses browser remote debugging
                  • Drops file in Windows directory
                  • Enumerates system info in registry
                  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
                  • Suspicious use of FindShellTrayWindow
                  PID:5332
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=133.0.6943.99 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=133.0.3065.69 --initial-client-data=0x264,0x268,0x26c,0x260,0x278,0x7ffd5fecf208,0x7ffd5fecf214,0x7ffd5fecf220
                    3⤵
                      PID:2288
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --string-annotations --always-read-main-dll --field-trial-handle=1924,i,6611032545934625693,17824046994861444247,262144 --variations-seed-version --mojo-platform-channel-handle=2260 /prefetch:3
                      3⤵
                        PID:1936
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --string-annotations --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --always-read-main-dll --field-trial-handle=2224,i,6611032545934625693,17824046994861444247,262144 --variations-seed-version --mojo-platform-channel-handle=2220 /prefetch:2
                        3⤵
                          PID:5604
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --string-annotations --always-read-main-dll --field-trial-handle=2560,i,6611032545934625693,17824046994861444247,262144 --variations-seed-version --mojo-platform-channel-handle=2732 /prefetch:8
                          3⤵
                            PID:2236
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --string-annotations --pdf-upsell-enabled --remote-debugging-port=9223 --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --always-read-main-dll --field-trial-handle=3472,i,6611032545934625693,17824046994861444247,262144 --variations-seed-version --mojo-platform-channel-handle=3556 /prefetch:1
                            3⤵
                            • Uses browser remote debugging
                            PID:448
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --string-annotations --instant-process --pdf-upsell-enabled --remote-debugging-port=9223 --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --always-read-main-dll --field-trial-handle=3480,i,6611032545934625693,17824046994861444247,262144 --variations-seed-version --mojo-platform-channel-handle=3560 /prefetch:1
                            3⤵
                            • Uses browser remote debugging
                            PID:2532
                        • C:\Windows\SysWOW64\cmd.exe
                          "C:\Windows\system32\cmd.exe" /c timeout /t 11 & rd /s /q "C:\ProgramData\k6xl6" & exit
                          2⤵
                          • System Location Discovery: System Language Discovery
                          PID:4824
                          • C:\Windows\SysWOW64\timeout.exe
                            timeout /t 11
                            3⤵
                            • System Location Discovery: System Language Discovery
                            • Delays execution with timeout.exe
                            PID:4932
                      • C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe
                        "C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe"
                        1⤵
                          PID:4708
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                          1⤵
                            PID:2964
                          • C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.69\elevation_service.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.69\elevation_service.exe"
                            1⤵
                              PID:2244

                            Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

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                            Downloads

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\799e794d-9722-4c00-b6ac-2d5b44a812bc.tmp

                              Filesize

                              80KB

                              MD5

                              c19c7e1f3cd18d5409f2f5fbc395c807

                              SHA1

                              65d3b2e48f2c7971bb849e07de89e939429c4ee4

                              SHA256

                              bd6b22fafc5ffc1387d334bc9570b495993ecb92e6e07e3e4144722414f51399

                              SHA512

                              a20efb7eaacc27be72b8573c387cc69808a1143faabfa13eda8f82b87b12259a8ee2345f4b1d6955c7497690e322e7f9a08b549495917544d62010e0e3153dc5

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BrowsingTopicsState

                              Filesize

                              649B

                              MD5

                              8b24b162f466c9b784f280e51a7a72c7

                              SHA1

                              7f044dd21dba66d2aa34b9f3a01dfad8bd4cf179

                              SHA256

                              ac3d62995e5627ec7b73fa91ba47c30605ee8a7e8c1529fea23cf31c277ab014

                              SHA512

                              48db098b08d19620b46e22e2dedea1fb1e3b6c288b3d11f2624210e27c5cba3aa20ec79979215ee2ca1975a0e400664285439b54c877721f432193897b3a2bcc

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

                              Filesize

                              2B

                              MD5

                              d751713988987e9331980363e24189ce

                              SHA1

                              97d170e1550eee4afc0af065b78cda302a97674c

                              SHA256

                              4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                              SHA512

                              b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

                            • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                              Filesize

                              280B

                              MD5

                              77532bfc14c90e92c2c117f6625e41d1

                              SHA1

                              7ba952d5e18485d66976547fb8f47b2aaffeab80

                              SHA256

                              587fe94912145359072577e01c7fe95e0fd4e6972e35f0a6a4d464382d8237f7

                              SHA512

                              1b1b9ed2c3012cb6371b05681acf995a15feab32f0bc860bd4c441c1a1dcd8bd1a9fc7985fd10c16674ee7423a86c479a241dd5d1c843fb70962504db0eb82a2

                            • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Service Worker\CacheStorage\3cedfb74d44f2e84198d23075aef16c34a668ceb\5bea1764-b070-4aad-8261-2a922c58cde7\index-dir\the-real-index

                              Filesize

                              1KB

                              MD5

                              7395e5f546f599251381e3dfca773009

                              SHA1

                              f2acedf3da7f4419f7403382fcda5148a5438e24

                              SHA256

                              77dafaeb8ebe7165d56b7879f92ea42c970c42a41d9c57a2f9be79597d58eec9

                              SHA512

                              95138cabeb9f6e95aa06b3877cdeb5a7d66d4ea6f62f672144d8d12eb690b1caafbc1618f479e89b4fd0a5946c06bc650fa0fdff1c1fee716c25fb4db4b70a5b

                            • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Service Worker\CacheStorage\3cedfb74d44f2e84198d23075aef16c34a668ceb\5bea1764-b070-4aad-8261-2a922c58cde7\index-dir\the-real-index~RFe57dd40.TMP

                              Filesize

                              1KB

                              MD5

                              880941595a74cce48aacd31f10653935

                              SHA1

                              292b67f5fd5401c9c72b8b052a9a6d523ce648fe

                              SHA256

                              6f31afcd5085c6884169a5828ca7488dec0d89ce6fddd197b4c6565147ce3c15

                              SHA512

                              dab9f73104214799f75ad436449a2067bf3c4e3ce8e0e25301ec844026e8d3fca5a9e144a6cf328a329a7dc095fe8e36c0bd0ae1e2701bbdd174e9b5f8ea80d5

                            • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                              Filesize

                              41KB

                              MD5

                              a09d1a98fd8fa5f7201aa6c7c6304cdd

                              SHA1

                              caa2849fde8771ac34a23c7d4ddf244a0bc178d0

                              SHA256

                              22bd2da6dbd8a1dcbc1f786294d07fef655aa8d6b9a31689dc1f23bfbd789ef1

                              SHA512

                              d31a0dfe4dfc79af088b8b217eb3d8e6db0c2a2cad3fe0f52d0e2b1ca97a9692f5c20bca983c310ed6d0850a32d2b30f562fee87642a9b33d06f3b15018e3e72