Analysis

  • max time kernel
    66s
  • max time network
    63s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    08-02-2025 19:07

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 16 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 4 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 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.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 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 2 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 3 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of FindShellTrayWindow 34 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
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2384
    • 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
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2484
      • 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:7 --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=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fefb519758,0x7fefb519768,0x7fefb519778
        3⤵
          PID:2092
        • C:\Windows\system32\ctfmon.exe
          ctfmon.exe
          3⤵
            PID:2480
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1136 --field-trial-handle=1216,i,6937461236043219212,7490523457394623366,131072 /prefetch:2
            3⤵
              PID:936
            • 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 --mojo-platform-channel-handle=1484 --field-trial-handle=1216,i,6937461236043219212,7490523457394623366,131072 /prefetch:8
              3⤵
                PID:596
              • 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=utility --mojo-platform-channel-handle=1596 --field-trial-handle=1216,i,6937461236043219212,7490523457394623366,131072 /prefetch:8
                3⤵
                  PID:944
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --remote-debugging-port=9223 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2132 --field-trial-handle=1216,i,6937461236043219212,7490523457394623366,131072 /prefetch:1
                  3⤵
                  • Uses browser remote debugging
                  PID:2488
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --remote-debugging-port=9223 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2144 --field-trial-handle=1216,i,6937461236043219212,7490523457394623366,131072 /prefetch:1
                  3⤵
                  • Uses browser remote debugging
                  PID:1288
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1508 --field-trial-handle=1216,i,6937461236043219212,7490523457394623366,131072 /prefetch:2
                  3⤵
                    PID:3000
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --remote-debugging-port=9223 --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1340 --field-trial-handle=1216,i,6937461236043219212,7490523457394623366,131072 /prefetch:1
                    3⤵
                    • Uses browser remote debugging
                    PID:2840
                  • 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 --mojo-platform-channel-handle=3496 --field-trial-handle=1216,i,6937461236043219212,7490523457394623366,131072 /prefetch:8
                    3⤵
                      PID:2448
                    • 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 --mojo-platform-channel-handle=3480 --field-trial-handle=1216,i,6937461236043219212,7490523457394623366,131072 /prefetch:8
                      3⤵
                        PID:892
                    • C:\Windows\SysWOW64\cmd.exe
                      "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\sjmg4" & exit
                      2⤵
                      • System Location Discovery: System Language Discovery
                      PID:2248
                      • C:\Windows\SysWOW64\timeout.exe
                        timeout /t 10
                        3⤵
                        • System Location Discovery: System Language Discovery
                        • Delays execution with timeout.exe
                        PID:2424
                  • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                    "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                    1⤵
                      PID:928

                    Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

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                    Downloads

                    • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp

                      Filesize

                      16B

                      MD5

                      18e723571b00fb1694a3bad6c78e4054

                      SHA1

                      afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                      SHA256

                      8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                      SHA512

                      43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

                    • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\ShaderCache\data_1

                      Filesize

                      264KB

                      MD5

                      f50f89a0a91564d0b8a211f8921aa7de

                      SHA1

                      112403a17dd69d5b9018b8cede023cb3b54eab7d

                      SHA256

                      b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                      SHA512

                      bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                    • C:\Users\Admin\AppData\Local\Temp\Cab2703.tmp

                      Filesize

                      70KB

                      MD5

                      49aebf8cbd62d92ac215b2923fb1b9f5

                      SHA1

                      1723be06719828dda65ad804298d0431f6aff976

                      SHA256

                      b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

                      SHA512

                      bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

                    • C:\Users\Admin\AppData\Local\Temp\Tar2763.tmp

                      Filesize

                      181KB

                      MD5

                      4ea6026cf93ec6338144661bf1202cd1

                      SHA1

                      a1dec9044f750ad887935a01430bf49322fbdcb7

                      SHA256

                      8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

                      SHA512

                      6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

                    • memory/2384-6-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-4-0x0000000004410000-0x0000000004411000-memory.dmp

                      Filesize

                      4KB

                    • memory/2384-7-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-15-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-5-0x0000000000401000-0x000000000040F000-memory.dmp

                      Filesize

                      56KB

                    • memory/2384-2-0x0000000004480000-0x0000000004481000-memory.dmp

                      Filesize

                      4KB

                    • memory/2384-80-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-153-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-154-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-155-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-156-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-0-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-3-0x0000000004400000-0x0000000004401000-memory.dmp

                      Filesize

                      4KB

                    • memory/2384-1-0x0000000077960000-0x0000000077962000-memory.dmp

                      Filesize

                      8KB

                    • memory/2384-241-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-276-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-301-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-323-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-324-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-463-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-464-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB

                    • memory/2384-504-0x0000000000400000-0x000000000085E000-memory.dmp

                      Filesize

                      4.4MB