Analysis

  • max time kernel
    149s
  • max time network
    134s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251015-en
  • resource tags

    arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    11/12/2025, 00:03

General

  • Target
    file.exe
  • Size 8.5MB
  • Sample251211-ab462stlem
  • SHA256 a84c53037ecf5ba9db3d05ed58d835a960973dfba8946c94e9bfa6838ee12a4b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

Botnet
  • dadf4dfb4414faa707e84357dfba40dd

C2
  • https://steamcommunity.com/profiles/76561198761022496

Attributes
  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0

Signatures

  • Detects Vidar Stealer 4 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar family
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

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

  • 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 50 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 27 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5984
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --profile-directory="Default"
      2⤵
      • Drops file in Windows directory
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4920
      • 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=0xfc,0x100,0x104,0xd8,0x108,0x7fff5571dcf8,0x7fff5571dd04,0x7fff5571dd10
        3⤵
          PID:4932
        • 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=1888,i,9945889964938061522,8942124102860344527,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=2040 /prefetch:11
          3⤵
            PID:5124
          • 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=1996,i,9945889964938061522,8942124102860344527,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=1992 /prefetch:2
            3⤵
              PID:1972
            • 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=2384,i,9945889964938061522,8942124102860344527,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=2528 /prefetch:13
              3⤵
                PID:1132
              • 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 --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=3200,i,9945889964938061522,8942124102860344527,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=3268 /prefetch:1
                3⤵
                  PID:824
                • 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 --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=3208,i,9945889964938061522,8942124102860344527,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=3220 /prefetch:1
                  3⤵
                    PID:2216
                  • 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 --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=4192,i,9945889964938061522,8942124102860344527,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=4220 /prefetch:9
                    3⤵
                      PID:5744
                    • 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 --disable-gpu-compositing --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=4608,i,9945889964938061522,8942124102860344527,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=4632 /prefetch:1
                      3⤵
                        PID:2796
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --profile-directory="Default"
                      2⤵
                      • Drops file in Windows directory
                      • Enumerates system info in registry
                      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
                      • Suspicious use of FindShellTrayWindow
                      • Suspicious use of WriteProcessMemory
                      PID:5932
                      • 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=0x2e4,0x2e8,0x2ec,0x2e0,0x310,0x7fff556ff208,0x7fff556ff214,0x7fff556ff220
                        3⤵
                          PID:2544
                        • 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=2148,i,2969139356160228061,3128487799185326761,262144 --variations-seed-version --mojo-platform-channel-handle=2144 /prefetch:2
                          3⤵
                            PID:800
                          • 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=1904,i,2969139356160228061,3128487799185326761,262144 --variations-seed-version --mojo-platform-channel-handle=2200 /prefetch:11
                            3⤵
                              PID:6028
                            • 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=2476,i,2969139356160228061,3128487799185326761,262144 --variations-seed-version --mojo-platform-channel-handle=2496 /prefetch:13
                              3⤵
                                PID:5212
                              • 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 --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=3432,i,2969139356160228061,3128487799185326761,262144 --variations-seed-version --mojo-platform-channel-handle=3500 /prefetch:1
                                3⤵
                                  PID:2828
                                • 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 --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=3440,i,2969139356160228061,3128487799185326761,262144 --variations-seed-version --mojo-platform-channel-handle=3564 /prefetch:1
                                  3⤵
                                    PID:5796
                              • 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:1192
                                • 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:1080
                                  • 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:1848
                                    • 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:4184

                                      Network

                                            MITRE ATT&CK Enterprise v16

                                            Replay Monitor

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                                            Downloads

                                            SCT Auditing Pending Reports

                                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports
                                            • Size 2B
                                            • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                                            • MD5 SHA1 SHA512

                                            Local State

                                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                            • Size 117KB
                                            • SHA256 c0e2c77e6e9a8149476c027b99babf1347f1b56a3be832873df083977bd25f4e
                                            • MD5 SHA1 SHA512 SSDEEP

                                            settings.dat

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                            • Size 280B
                                            • SHA256 863a93e5b785f842cd565785014122277827259ee2147df74f1207f843029053
                                            • MD5 SHA1 SHA512

                                            Local State

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                            • Size 36KB
                                            • SHA256 6ebfcf6efefd0fe583714a0e6420b9fdee99c35b952c265edcc92b0af8c8fc7e
                                            • MD5 SHA1 SHA512 SSDEEP

                                            Local State

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                            • Size 35KB
                                            • SHA256 069e8a8853b41eeaec7b277bc897a550444a5a352d692f2283bcbe15caa579c1
                                            • MD5 SHA1 SHA512 SSDEEP

                                            memory/5984-0-0x0000000140000000-0x0000000140189000-memory.dmp

                                            memory/5984-1-0x0000000140000000-0x0000000140189000-memory.dmp

                                            memory/5984-31-0x0000000140000000-0x0000000140189000-memory.dmp

                                            memory/5984-144-0x0000000140000000-0x0000000140189000-memory.dmp

                                            memory/5984-155-0x0000000140000000-0x0000000140189000-memory.dmp