Analysis

  • max time kernel
    135s
  • max time network
    213s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20250314-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-x64system
  • submitted
    19/04/2025, 06:16

General

  • Target

    frick-main/bilvarw.exe

  • Size

    137KB

  • MD5

    9d6c51f4f9e0132ea410b8db3c241be6

  • SHA1

    8aa67a34b626f61e6ab053f8a51e7c5142865fe4

  • SHA256

    61d2f6f7051c9b06c87e7c6f8c596b8e4d88382278e4d34d81520bc47e2cba31

  • SHA512

    479dd4703e0b462d7c0cfee5bdcaed97d8888f6c1fb04aad6e6d1a098b5a61701dd19a2635c64cb4cc77038445e5e498fdf8af75d728e5a58988047d3c4e2790

  • SSDEEP

    3072:aVvH8RuVrLyEj/S2CUGACcceJd/klDHa/R8mxu3s8QLGu:KH8RuRLlzgUd6a/AslLGu

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\frick-main\bilvarw.exe
    "C:\Users\Admin\AppData\Local\Temp\frick-main\bilvarw.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:5308
    • 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:2088
      • 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=0x21c,0x220,0x224,0x1f8,0x228,0x7fffa8acdcf8,0x7fffa8acdd04,0x7fffa8acdd10
        3⤵
          PID:4028
        • 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,7867357415021067600,4134605789266019714,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=2024 /prefetch:2
          3⤵
            PID:4784
          • 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=1644,i,7867357415021067600,4134605789266019714,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=2284 /prefetch:3
            3⤵
              PID:4912
            • 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=2396,i,7867357415021067600,4134605789266019714,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=1968 /prefetch:8
              3⤵
                PID:4988
              • 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=3252,i,7867357415021067600,4134605789266019714,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=1788 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:5040
              • 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=3260,i,7867357415021067600,4134605789266019714,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=3336 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:5008
              • 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=4256,i,7867357415021067600,4134605789266019714,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=4296 /prefetch:2
                3⤵
                • Uses browser remote debugging
                PID:1692
              • 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=3908,i,7867357415021067600,4134605789266019714,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=4692 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:4264
              • 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=5288,i,7867357415021067600,4134605789266019714,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=5296 /prefetch:8
                3⤵
                  PID:3932
                • 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=5476,i,7867357415021067600,4134605789266019714,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=5488 /prefetch:8
                  3⤵
                    PID:1148
                • 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:744
                  • 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,0x260,0x28c,0x7fffa8b4f208,0x7fffa8b4f214,0x7fffa8b4f220
                    3⤵
                      PID:5780
                    • 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=1936,i,7691774584421888201,12225000638849047679,262144 --variations-seed-version --mojo-platform-channel-handle=2288 /prefetch:3
                      3⤵
                        PID:3740
                      • 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=2260,i,7691774584421888201,12225000638849047679,262144 --variations-seed-version --mojo-platform-channel-handle=2256 /prefetch:2
                        3⤵
                          PID:5016
                        • 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=2312,i,7691774584421888201,12225000638849047679,262144 --variations-seed-version --mojo-platform-channel-handle=2296 /prefetch:8
                          3⤵
                            PID:5324
                          • 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=3500,i,7691774584421888201,12225000638849047679,262144 --variations-seed-version --mojo-platform-channel-handle=3544 /prefetch:1
                            3⤵
                            • Uses browser remote debugging
                            PID:5336
                          • 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=3516,i,7691774584421888201,12225000638849047679,262144 --variations-seed-version --mojo-platform-channel-handle=3532 /prefetch:1
                            3⤵
                            • Uses browser remote debugging
                            PID:1104
                        • C:\Windows\SysWOW64\cmd.exe
                          "C:\Windows\system32\cmd.exe" /c timeout /t 11 & rd /s /q "C:\ProgramData\a1vsr" & exit
                          2⤵
                          • System Location Discovery: System Language Discovery
                          PID:4900
                          • C:\Windows\SysWOW64\timeout.exe
                            timeout /t 11
                            3⤵
                            • System Location Discovery: System Language Discovery
                            • Delays execution with timeout.exe
                            PID:5884
                      • 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:4828
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                          1⤵
                            PID:4720
                          • 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:5368

                            Network

                            MITRE ATT&CK Enterprise v16

                            Replay Monitor

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                            Downloads

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

                              Filesize

                              414B

                              MD5

                              2045cf654f2660cbcce62f3d8f680eeb

                              SHA1

                              4c37b9e320c801fb1c107906a2254c93f13de70d

                              SHA256

                              1e191030bd5d5c384185c9092a3ae69138e02ad7fbf0ba7ea7ab8b7f8ead32b3

                              SHA512

                              f1331a81042ba431b5f6cf1afa6db82908dfd40cccd13f21596307280d7fab0b4f542986cbc4d7e3b6d9d095c04a7956771787b4b2bdf016e1d3f82ac7f22181

                            • 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\Google\Chrome\User Data\Local State

                              Filesize

                              80KB

                              MD5

                              1b38e4bde2cc0ecbf833408d71e07277

                              SHA1

                              5c0e8b211fe1c1ec6a77cf8c9eaf88a7ded12096

                              SHA256

                              791ca35f6cbcf1b5dd8d9548fd566912b1e669c4b020e96e22992fc40121a36c

                              SHA512

                              61acf6a6b52da235344fc21cf9f5ce118d5494c02138c1f0d7af268964b2b514411dea02e014a2fd69c6c8904dbf83053c44849fe6eb4048fec5061a5cb09c95

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

                              Filesize

                              280B

                              MD5

                              6c3ba40e438b794a4630cfac27b4855f

                              SHA1

                              255cbd9d9013024a359b4ac1187fd0f39b89f46e

                              SHA256

                              44150c3a8ecd45408e7bb17ad9cd38d3191e8ffebfb8e09f9c41b8f59620a5b2

                              SHA512

                              344ad251942b3e6d2844145607029bfd2439cf5518fbc6e0e82fa6bec9f5ff391ecf38025dcddc8158591bd433b767126b2c7d520b7a97389f31aaff63f3188d

                            • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\IndexedDB\https_ntp.msn.com_0.indexeddb.leveldb\CURRENT

                              Filesize

                              16B

                              MD5

                              46295cac801e5d4857d09837238a6394

                              SHA1

                              44e0fa1b517dbf802b18faf0785eeea6ac51594b

                              SHA256

                              0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

                              SHA512

                              8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

                            • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Service Worker\CacheStorage\3cedfb74d44f2e84198d23075aef16c34a668ceb\index.txt

                              Filesize

                              327B

                              MD5

                              27436ab2521e411cf8057c71567f5b0f

                              SHA1

                              b1631496f424b6afebf6cb2e2414fcf2f638b3c4

                              SHA256

                              9cd3bea785daf4ddc43a9b0d6b7d44ec2153638476b564768645317c9e5824a4

                              SHA512

                              dd18557976e6488448629ea98e9eb186dcff40a86ddf58eb460a5bf825460d27567f8b4981583d339ad9504265a065620b66254227a809c3ad5bdfc1e12b81bf

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

                              Filesize

                              40KB

                              MD5

                              b5d8086bbd9830d51135f60b079a25a5

                              SHA1

                              9e954f1ed387e6e5fb36f5f5f3e9b0de103a570f

                              SHA256

                              1eae1baf361e1e2f9f0b250584f7d9bdb772f82e9ffca0dea595dafccd4f2518

                              SHA512

                              3b829438de6e6cb16ac2977bda99c661d091e6544a445bdfccbea85c05ffa8a2da2f759aa9fcd99edf83018caec3e86984e10516e65ba5e0b74fbdb40858e1ad

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

                              Filesize

                              41KB

                              MD5

                              d71b115b5bd9936e084221f55dfe7137

                              SHA1

                              dcf5c3b89dfa01cc3824fdf072f471b200be0ea3

                              SHA256

                              8f1238985e9f4950c1d180825cb04fcf977ed2cd53c81cf02c37f9d61ef8e64e

                              SHA512

                              e421b5291248338974b58945e0770906edf9098325fc8da4e674ae9e7beb1ecdaad4b05086502a584532f880f755fd3a3875df2dfda2b5eae8d64696be74d3b1