Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/01/2025, 12:04

General

  • Target

    b4ce92413122d3e86b3044bfc518c6bf3d12d9a9c5ad7b7c03c265f19e775628.exe

  • Size

    398KB

  • MD5

    e6f75da0133c679c36e837660002f099

  • SHA1

    368a629a708ea9f70402b288d015f417ecd31c1b

  • SHA256

    b4ce92413122d3e86b3044bfc518c6bf3d12d9a9c5ad7b7c03c265f19e775628

  • SHA512

    7a0463d776cb03c5243ac4c4795d2ebb6bb8c8805f12fc8b49925ba6d2bf64b49878ceee67b1b3b7a5afc7f28be335ba1765500a0230278da99fd768dbfe53d7

  • SSDEEP

    12288:vdDU6g13sJd1fm/+yb3O2jg82ydU/DdKumhm:vdE3sJd1fm/+yb3OYg84/JHym

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Program Files directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b4ce92413122d3e86b3044bfc518c6bf3d12d9a9c5ad7b7c03c265f19e775628.exe
    "C:\Users\Admin\AppData\Local\Temp\b4ce92413122d3e86b3044bfc518c6bf3d12d9a9c5ad7b7c03c265f19e775628.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4980
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ycynt.exe "C:\Users\Admin\AppData\Local\Temp\b4ce92413122d3e86b3044bfc518c6bf3d12d9a9c5ad7b7c03c265f19e775628.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:4252
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:1896
      • C:\Users\Admin\AppData\Local\Temp\ycynt.exe
        C:\Users\Admin\AppData\Local\Temp\\ycynt.exe "C:\Users\Admin\AppData\Local\Temp\b4ce92413122d3e86b3044bfc518c6bf3d12d9a9c5ad7b7c03c265f19e775628.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2912
        • \??\c:\Program Files\wqgaac\yuy.exe
          "c:\Program Files\wqgaac\yuy.exe" "c:\Program Files\wqgaac\yuyyf.dll",Viewer C:\Users\Admin\AppData\Local\Temp\ycynt.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2092

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files\wqgaac\yuy.exe

          Filesize

          60KB

          MD5

          889b99c52a60dd49227c5e485a016679

          SHA1

          8fa889e456aa646a4d0a4349977430ce5fa5e2d7

          SHA256

          6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

          SHA512

          08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

        • C:\Users\Admin\AppData\Local\Temp\ycynt.exe

          Filesize

          399KB

          MD5

          87fd08584741822b68468548956ff732

          SHA1

          ab2c2921903528c230aca3396f9b2e864339d9e9

          SHA256

          9254b13e02642186e4143624e68490ef7ad27da3e1968d2c3f03df1a4294d5c8

          SHA512

          f8869186cbae9e45935e4057898012d89e023aeac31b3a80db23a8ae0fba7e5e663d5fe86a076aba1f7e3663bbe6a5464d51e0132319710604486e48df56c035

        • \??\c:\Program Files\wqgaac\yuyyf.dll

          Filesize

          89KB

          MD5

          57d2548ab7766e18696f59d40b536f9a

          SHA1

          2a5004d19f2840a111ec10c842bf6747b28b23bf

          SHA256

          d6142f471211704f4e86cc2e28381d0abd4cc6d43b085c77ac29b7a68050664a

          SHA512

          4b3c9091d10778d553a03d7877aa6bae9c55a41e16d8a593a00dbbc2f17cbf83acd2fa08ec6698fdddae31d58c41b24d6938cec66fd17f0f61d5a6fa78061684

        • memory/2092-11-0x0000000010000000-0x0000000010033000-memory.dmp

          Filesize

          204KB

        • memory/2092-12-0x0000000010000000-0x0000000010033000-memory.dmp

          Filesize

          204KB

        • memory/2092-14-0x0000000010000000-0x0000000010033000-memory.dmp

          Filesize

          204KB

        • memory/2092-16-0x0000000010000000-0x0000000010033000-memory.dmp

          Filesize

          204KB