Analysis

  • max time kernel
    90s
  • max time network
    124s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250207-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250207-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    12-02-2025 20:00

General

  • Target

    us.exe

  • Size

    6.6MB

  • MD5

    47ef73872d8adbb3f66c4d0b145060bf

  • SHA1

    f2dde0526a50623daecaaa969f77204d46894e32

  • SHA256

    4fc13c81b5594dd189eafc3e88fd6d5cadf8f951b81d10fb2ffab3c851512771

  • SHA512

    274ee436cb704002581eb3551f676e9c8f7015ea75ca090f6b783d9fd7d9b7c7be4dd86fd4024f0877658a464653e6c738f77fcda150221c8a88f276be987687

  • SSDEEP

    49152:PJiTLxmrxMgiQNXf34SF0VwUhu6NqQFn8vca9Ypyy7KQ+cKa/Et9m3OnytR1ljyc:P0TLxmFkQNXgU0ZqXHfaj3OQjy

Malware Config

Extracted

Family

vidar

C2

https://t.me/sok33tn

https://steamcommunity.com/profiles/76561199824159981

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:136.0) Gecko/20100101 Firefox/136.0

Signatures

  • Detect Vidar Stealer 23 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar family
  • Uses browser remote debugging 2 TTPs 9 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • 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 5 IoCs

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

  • Enumerates system info in registry 2 TTPs 8 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 14 IoCs
  • Suspicious use of FindShellTrayWindow 51 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\us.exe
    "C:\Users\Admin\AppData\Local\Temp\us.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4776
    • C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
      "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5200
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --remote-debugging-port=9223 --profile-directory="Default"
        3⤵
        • Uses browser remote debugging
        • Drops file in Windows directory
        • 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:3556
        • 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=123.0.6312.123 --initial-client-data=0x220,0x224,0x228,0x1fc,0x1c4,0x7ffb5a08cc40,0x7ffb5a08cc4c,0x7ffb5a08cc58
          4⤵
            PID:3824
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=2000,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=1996 /prefetch:2
            4⤵
              PID:5712
            • 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 --no-appcompat-clear --field-trial-handle=1904,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=2032 /prefetch:3
              4⤵
                PID:2420
              • 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 --no-appcompat-clear --field-trial-handle=2264,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=2468 /prefetch:8
                4⤵
                  PID:2120
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --remote-debugging-port=9223 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3188,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=3200 /prefetch:1
                  4⤵
                  • Uses browser remote debugging
                  PID:464
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --remote-debugging-port=9223 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3224,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=3244 /prefetch:1
                  4⤵
                  • Uses browser remote debugging
                  PID:1848
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --remote-debugging-port=9223 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4388,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=4576 /prefetch:1
                  4⤵
                  • Uses browser remote debugging
                  PID:472
                • 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 --no-appcompat-clear --field-trial-handle=4728,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=4796 /prefetch:8
                  4⤵
                    PID:4424
                  • 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 --no-appcompat-clear --field-trial-handle=4860,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=4628 /prefetch:8
                    4⤵
                      PID:4916
                    • 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 --no-appcompat-clear --field-trial-handle=5028,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=5008 /prefetch:8
                      4⤵
                        PID:4652
                      • 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 --no-appcompat-clear --field-trial-handle=5152,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=5160 /prefetch:8
                        4⤵
                          PID:4544
                        • 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 --no-appcompat-clear --field-trial-handle=5156,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=4784 /prefetch:8
                          4⤵
                            PID:5604
                          • 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 --no-appcompat-clear --field-trial-handle=5108,i,10581828506231164594,14930897539518674497,262144 --variations-seed-version=20250210-180233.097000 --mojo-platform-channel-handle=4804 /prefetch:8
                            4⤵
                              PID:3108
                          • 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"
                            3⤵
                            • Uses browser remote debugging
                            • Enumerates system info in registry
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
                            • Suspicious use of FindShellTrayWindow
                            PID:748
                            • 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:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x128,0x12c,0x130,0x104,0x134,0x7ffb611446f8,0x7ffb61144708,0x7ffb61144718
                              4⤵
                              • Checks processor information in registry
                              • Enumerates system info in registry
                              • Suspicious behavior: EnumeratesProcesses
                              PID:1208
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2124,754081456071268481,10620050670354071028,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2144 /prefetch:2
                              4⤵
                                PID:3276
                              • 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 --field-trial-handle=2124,754081456071268481,10620050670354071028,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2456 /prefetch:3
                                4⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:4852
                              • 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 --field-trial-handle=2124,754081456071268481,10620050670354071028,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2880 /prefetch:8
                                4⤵
                                  PID:4604
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --remote-debugging-port=9223 --field-trial-handle=2124,754081456071268481,10620050670354071028,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3420 /prefetch:1
                                  4⤵
                                  • Uses browser remote debugging
                                  PID:4616
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --remote-debugging-port=9223 --field-trial-handle=2124,754081456071268481,10620050670354071028,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3440 /prefetch:1
                                  4⤵
                                  • Uses browser remote debugging
                                  PID:3712
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --remote-debugging-port=9223 --field-trial-handle=2124,754081456071268481,10620050670354071028,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5160 /prefetch:1
                                  4⤵
                                  • Uses browser remote debugging
                                  PID:4936
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --remote-debugging-port=9223 --field-trial-handle=2124,754081456071268481,10620050670354071028,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4156 /prefetch:1
                                  4⤵
                                  • Uses browser remote debugging
                                  PID:4592
                          • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
                            "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ua /installsource scheduler
                            1⤵
                            • System Location Discovery: System Language Discovery
                            PID:548
                          • C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
                            "C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"
                            1⤵
                              PID:3224
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                              1⤵
                                PID:1008

                              Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              • 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

                                152B

                                MD5

                                e34c3c87fc826bdccbe8f4c376fb131b

                                SHA1

                                47ca51ad4ceaaf6bbe5fed44d80f2706836288ee

                                SHA256

                                4e99e96853d05a8d49974838f557da5567efa08ba34a0759373ab538e67d912c

                                SHA512

                                cddb3b8f64c4d5717ef876b02aede044c5bc322b71c93446f1d1bc3cc4092cc31aa1057165e6857c19891d2e4e8cf40aa8d9282a81f4bbf87debe94c72b14003

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

                                Filesize

                                5KB

                                MD5

                                eac1527cdf13b35b500c03642aee3310

                                SHA1

                                0e5d93817bc8824b008fe4aaf51038d03a0a0a44

                                SHA256

                                41f69883f6705ce50151a93abf864007a5933ea20cd7ec1498fb682073a9e033

                                SHA512

                                243e5bebd0bf5174c32f3b1dd80cb5fc939aa24bb6603a12c225a19fabaaf405c8f2a5500258ad29c320ab10cbe14149ec4d61ccde4284bff3355b60f83e45af

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

                                Filesize

                                112KB

                                MD5

                                e03fc0ff83fdfa203efc0eb3d2b8ed35

                                SHA1

                                c705b1aa42d84b3414fdc5058e0fa0a3dc9e1664

                                SHA256

                                08d550d1866b479c6c41ebbda7b453dba198ee8744a52c530ff34458024ee1fe

                                SHA512

                                c0840930d7a9cf16e8fbefefd09c564eabfcfb6e9df1f9b906b830e8218a818c3f9721f9ce1fc2a96b2e6ce725baba0dcd5810a9b55d20b3c9d6f4569b9008a2

                              • memory/5200-60-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-62-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-14-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-25-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-13-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-56-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-57-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-58-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-59-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-0-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-61-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-15-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-63-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-64-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-12-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-2-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-100-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-109-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-110-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-111-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-112-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-113-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-1-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB

                              • memory/5200-115-0x0000000000400000-0x0000000000422000-memory.dmp

                                Filesize

                                136KB