Analysis

  • max time kernel
    30s
  • max time network
    31s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250207-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250207-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    10-02-2025 14:30

General

  • Target

    Bjkm5hE.exe

  • Size

    1.7MB

  • MD5

    0f2e0a4daa819b94536f513d8bb3bfe2

  • SHA1

    4f73cec6761d425000a5586a7325378148d67861

  • SHA256

    8afc16be658f69754cc0654864ffed46c97a7558db0c39e0f2d5b870c1ff6e39

  • SHA512

    80a35414c2be58deec0f3382a8e949a979f67d4f02c2700cf0da4b857cdcc8daa6b00ce2bcc3864edb87446086fe3f547a60580449935dbad5fb5f08dda69f1b

  • SSDEEP

    49152:kvigLTTxYy9dxaAc73z4PQqLiy1jhDMBhKwnq2:kvi6hYy7YAI3ziLZA6wq

Malware Config

Signatures

  • Detect Vidar Stealer 8 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar family
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Uses browser remote debugging 2 TTPs 9 IoCs

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

  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • 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.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 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 1 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\Bjkm5hE.exe
    "C:\Users\Admin\AppData\Local\Temp\Bjkm5hE.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2956
    • 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
      • 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:4680
      • 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=0x21c,0x220,0x224,0x1f8,0x228,0x7ffd3adbcc40,0x7ffd3adbcc4c,0x7ffd3adbcc58
        3⤵
          PID:952
        • 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=1948,i,11689452615931578647,14274733000332436971,262144 --variations-seed-version=20250206-180041.353000 --mojo-platform-channel-handle=1960 /prefetch:2
          3⤵
            PID:5080
          • 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=2180,i,11689452615931578647,14274733000332436971,262144 --variations-seed-version=20250206-180041.353000 --mojo-platform-channel-handle=2216 /prefetch:3
            3⤵
              PID:2476
            • 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=2276,i,11689452615931578647,14274733000332436971,262144 --variations-seed-version=20250206-180041.353000 --mojo-platform-channel-handle=2296 /prefetch:8
              3⤵
                PID:1880
              • 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=3228,i,11689452615931578647,14274733000332436971,262144 --variations-seed-version=20250206-180041.353000 --mojo-platform-channel-handle=3236 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:4900
              • 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=3244,i,11689452615931578647,14274733000332436971,262144 --variations-seed-version=20250206-180041.353000 --mojo-platform-channel-handle=3300 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:4896
              • 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=4492,i,11689452615931578647,14274733000332436971,262144 --variations-seed-version=20250206-180041.353000 --mojo-platform-channel-handle=4576 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:4380
              • 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=4620,i,11689452615931578647,14274733000332436971,262144 --variations-seed-version=20250206-180041.353000 --mojo-platform-channel-handle=4796 /prefetch:8
                3⤵
                  PID:568
                • 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=3416,i,11689452615931578647,14274733000332436971,262144 --variations-seed-version=20250206-180041.353000 --mojo-platform-channel-handle=4792 /prefetch:8
                  3⤵
                    PID:1752
                  • 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=4956,i,11689452615931578647,14274733000332436971,262144 --variations-seed-version=20250206-180041.353000 --mojo-platform-channel-handle=4888 /prefetch:8
                    3⤵
                      PID:4708
                    • 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=4600,i,11689452615931578647,14274733000332436971,262144 --variations-seed-version=20250206-180041.353000 --mojo-platform-channel-handle=4972 /prefetch:8
                      3⤵
                        PID:2260
                    • 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
                      • Enumerates system info in registry
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
                      • Suspicious use of FindShellTrayWindow
                      PID:5052
                      • 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,0x130,0x104,0x134,0x7ffd3adc46f8,0x7ffd3adc4708,0x7ffd3adc4718
                        3⤵
                        • Checks processor information in registry
                        • Enumerates system info in registry
                        • Suspicious behavior: EnumeratesProcesses
                        PID:5060
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2012,9742794713562210778,15407332380060997281,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2028 /prefetch:2
                        3⤵
                          PID:4456
                        • 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=2012,9742794713562210778,15407332380060997281,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2464 /prefetch:3
                          3⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:4440
                        • 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=2012,9742794713562210778,15407332380060997281,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2888 /prefetch:8
                          3⤵
                            PID:692
                          • 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=2012,9742794713562210778,15407332380060997281,131072 --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=3440 /prefetch:1
                            3⤵
                            • Uses browser remote debugging
                            PID:1644
                          • 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=2012,9742794713562210778,15407332380060997281,131072 --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=3456 /prefetch:1
                            3⤵
                            • 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=2012,9742794713562210778,15407332380060997281,131072 --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=4732 /prefetch:1
                            3⤵
                            • Uses browser remote debugging
                            PID:2276
                          • 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=2012,9742794713562210778,15407332380060997281,131072 --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=5116 /prefetch:1
                            3⤵
                            • Uses browser remote debugging
                            PID:2760
                      • 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:4908
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                          1⤵
                            PID:3296

                          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

                            53e6a19ede8b1b7d4b857339ad1bd672

                            SHA1

                            0bc70f552dc43a925d943b29b46c6c3b850ac07d

                            SHA256

                            4e6a4338a9997017b7f6c281eade742e3cb3fa1805655876cca44f18a27e242b

                            SHA512

                            65d27ceab40f1dd610f762bcc5ec84ad303a2334fbe34798d21fcf5a90e60fd51dd59b48a7fc199e3ba3b156f2d47c825ed49aa0336c0496ee4226543e37d368

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

                            Filesize

                            5KB

                            MD5

                            19c1d6da36a02da7b4bdab0bcb0969e8

                            SHA1

                            30f0bfbb4d9d160eabe015ee9739fa1ce30fa156

                            SHA256

                            ca38b90e489dda07060b4a2365054c1ed98e3e1b139dce5a1c013122b96e39e0

                            SHA512

                            3e8197d1fcbd3be8356c505b0671a7b62a9e89dad232806540c3657b1551f21539fca511ccaf0261b7f0e6d524f76ad2c16b31d4259ae63e7e11fc16b0e20cc6

                          • memory/2956-8-0x0000000000401000-0x000000000040F000-memory.dmp

                            Filesize

                            56KB

                          • memory/2956-21-0x0000000000400000-0x000000000085E000-memory.dmp

                            Filesize

                            4.4MB

                          • memory/2956-6-0x0000000004960000-0x0000000004961000-memory.dmp

                            Filesize

                            4KB

                          • memory/2956-4-0x0000000004990000-0x0000000004991000-memory.dmp

                            Filesize

                            4KB

                          • memory/2956-5-0x0000000004940000-0x0000000004941000-memory.dmp

                            Filesize

                            4KB

                          • memory/2956-9-0x0000000000400000-0x000000000085E000-memory.dmp

                            Filesize

                            4.4MB

                          • memory/2956-10-0x0000000000400000-0x000000000085E000-memory.dmp

                            Filesize

                            4.4MB

                          • memory/2956-19-0x0000000000400000-0x000000000085E000-memory.dmp

                            Filesize

                            4.4MB

                          • memory/2956-20-0x0000000000400000-0x000000000085E000-memory.dmp

                            Filesize

                            4.4MB

                          • memory/2956-0-0x0000000000400000-0x000000000085E000-memory.dmp

                            Filesize

                            4.4MB

                          • memory/2956-22-0x0000000000400000-0x000000000085E000-memory.dmp

                            Filesize

                            4.4MB

                          • memory/2956-7-0x0000000004970000-0x0000000004971000-memory.dmp

                            Filesize

                            4KB

                          • memory/2956-2-0x00000000049C0000-0x00000000049C1000-memory.dmp

                            Filesize

                            4KB

                          • memory/2956-54-0x0000000000400000-0x000000000085E000-memory.dmp

                            Filesize

                            4.4MB

                          • memory/2956-56-0x0000000000400000-0x000000000085E000-memory.dmp

                            Filesize

                            4.4MB

                          • memory/2956-3-0x00000000049D0000-0x00000000049D1000-memory.dmp

                            Filesize

                            4KB

                          • memory/2956-1-0x0000000076F05000-0x0000000076F07000-memory.dmp

                            Filesize

                            8KB