Analysis

  • max time kernel
    149s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/11/2024, 12:22

General

  • Target
    f7f30ef25c64595bc462068781ee2e8592930f2351b6dcee38de66bd4451b334.exe
  • Size 90KB
  • Sample241111-pj7pgazbph
  • SHA256 f7f30ef25c64595bc462068781ee2e8592930f2351b6dcee38de66bd4451b334
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • Disables use of System Restore points 1 TTPs
  • Executes dropped EXE 14 IoCs
  • Modifies system executable filetype association 2 TTPs 13 IoCs
  • Adds Run key to start application 2 TTPs 5 IoCs
  • Drops desktop.ini file(s) 4 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • Drops file in System32 directory 6 IoCs
  • UPX packed file 33 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 15 IoCs

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

  • Modifies Control Panel 4 IoCs
  • Modifies registry class 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 15 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs
  • System policy modification 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f7f30ef25c64595bc462068781ee2e8592930f2351b6dcee38de66bd4451b334.exe
    "C:\Users\Admin\AppData\Local\Temp\f7f30ef25c64595bc462068781ee2e8592930f2351b6dcee38de66bd4451b334.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Modifies visibility of file extensions in Explorer
    • Modifies visiblity of hidden/system files in Explorer
    • Disables RegEdit via registry modification
    • Modifies system executable filetype association
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3924
    • C:\Windows\xk.exe
      C:\Windows\xk.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2512
    • C:\Windows\SysWOW64\IExplorer.exe
      C:\Windows\system32\IExplorer.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4300
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3220
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3596
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:5064
    • C:\Windows\xk.exe
      C:\Windows\xk.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4896
    • C:\Windows\SysWOW64\IExplorer.exe
      C:\Windows\system32\IExplorer.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3492
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3464
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3572
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3528
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3992
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:820
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4508
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3484

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        CSRSS.EXE

        • Path C:\Users\Admin\AppData\Local\WINDOWS\CSRSS.EXE
        • Size 90KB
        • SHA256 96fc552e9c006b5ac91093882af2a101ddab85083d1c6c4e6252e64db58d3341
        • MD5 SHA1 SHA512 SSDEEP

        CSRSS.EXE

        • Path C:\Users\Admin\AppData\Local\WINDOWS\CSRSS.EXE
        • Size 90KB
        • SHA256 e732babe72a6077b43cea4cd42beb59171dfcb07d3af8d833828acd62dce0ee7
        • MD5 SHA1 SHA512 SSDEEP

        LSASS.EXE

        • Path C:\Users\Admin\AppData\Local\WINDOWS\LSASS.EXE
        • Size 90KB
        • SHA256 d74e73eb7511ec8f82ddafb3715302c5b06e22b5602fa64cc948b719e0172f8e
        • MD5 SHA1 SHA512 SSDEEP

        SERVICES.EXE

        • Path C:\Users\Admin\AppData\Local\WINDOWS\SERVICES.EXE
        • Size 90KB
        • SHA256 88574d628f5455e6bd9cdb658b6acf682132eaffce992c7ba06994db62de09d7
        • MD5 SHA1 SHA512 SSDEEP

        SERVICES.EXE

        • Path C:\Users\Admin\AppData\Local\WINDOWS\SERVICES.EXE
        • Size 90KB
        • SHA256 0a5f6a05ebf46f9dedf9e03431caeda4ac512a100686840ffa27f4745856df1e
        • MD5 SHA1 SHA512 SSDEEP

        SMSS.EXE

        • Path C:\Users\Admin\AppData\Local\WINDOWS\SMSS.EXE
        • Size 90KB
        • SHA256 02ea7d3da19f263f781937b4a0b74766ac8c684561f96ce31f30577739a9e10e
        • MD5 SHA1 SHA512 SSDEEP

        WINLOGON.EXE

        • Path C:\Users\Admin\AppData\Local\WINDOWS\WINLOGON.EXE
        • Size 90KB
        • SHA256 f313f284c520aa7f0c2757c9b104380a75150ecf97bdf8df99aaa4e8cda5b5c9
        • MD5 SHA1 SHA512 SSDEEP

        winlogon.exe

        • Path C:\Users\Admin\AppData\Local\winlogon.exe
        • Size 90KB
        • SHA256 f7f30ef25c64595bc462068781ee2e8592930f2351b6dcee38de66bd4451b334
        • MD5 SHA1 SHA512 SSDEEP

        WINLOGON.EXE

        • Path C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
        • Size 90KB
        • SHA256 a072ef8ec1056062fd534d83000afa9109347a6c523af913d6e7a0fd4a021e5c
        • MD5 SHA1 SHA512 SSDEEP

        IExplorer.exe

        • Path C:\Windows\SysWOW64\IExplorer.exe
        • Size 90KB
        • SHA256 32ed1470dcd0b6deab2857112e958039928030fbab6913cce61b086cd5b04b08
        • MD5 SHA1 SHA512 SSDEEP

        IExplorer.exe

        • Path C:\Windows\SysWOW64\IExplorer.exe
        • Size 90KB
        • SHA256 d93dde2fc5eaa39c8ff128b37dfa3200417fe8c1c308d1c070e3a3b2bef870e8
        • MD5 SHA1 SHA512 SSDEEP

        xk.exe

        • Path C:\Windows\xk.exe
        • Size 90KB
        • SHA256 4be293f79d6ecc9f717dc57b02221f6ec1bcf33d88ba2957d8db8e3b85e773e9
        • MD5 SHA1 SHA512 SSDEEP

        xk.exe

        • Path C:\Windows\xk.exe
        • Size 90KB
        • SHA256 51b73e5fd2b78a4bf992e5145e0166aa2211e11b83dc8e8200a14e4a18bdc503
        • MD5 SHA1 SHA512 SSDEEP

        memory/820-232-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/2512-113-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3220-125-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3464-204-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3484-269-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3492-198-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3528-218-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3572-212-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3572-208-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3596-131-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3924-207-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3924-0-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3924-258-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3924-270-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/3992-225-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/4300-118-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/4508-265-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/4896-194-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/4896-188-0x0000000000400000-0x000000000042F000-memory.dmp

        memory/5064-138-0x0000000000400000-0x000000000042F000-memory.dmp