Analysis

  • max time kernel
    119s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    24/08/2024, 07:30

General

  • Target

    b5bdb7536b0d22a3df7cdd7f5c9d9500N.exe

  • Size

    1.7MB

  • MD5

    b5bdb7536b0d22a3df7cdd7f5c9d9500

  • SHA1

    a174413499b225c78d9a20a1ae448fe3b8f1ae6c

  • SHA256

    8c76e0dc1ddf1969c4499544805da6f450742967b1f3832c0138ebc0b20c234c

  • SHA512

    8d75033f996fe77d4e0e361db442ae2483460c9ea1ce6733944b56c5aee1da132cbfea69f714e69a4c92a706e8307dc9763f92cbfb458bcdcd6bd82741653239

  • SSDEEP

    12288:Y6sg9q8utL6R91NNaUfViptH0D9wvT1xkZTWbq6Pknm2N5kv7Z62J5ugQ8cY47OI:YyG6RGjv7biFpVUo

Malware Config

Signatures

  • Modifies firewall policy service 3 TTPs 8 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 7 IoCs
  • UPX packed file 21 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

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

  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 62 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b5bdb7536b0d22a3df7cdd7f5c9d9500N.exe
    "C:\Users\Admin\AppData\Local\Temp\b5bdb7536b0d22a3df7cdd7f5c9d9500N.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:588
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\DbrlM.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2868
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "WinUpdt" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe" /f
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:2232
    • C:\Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe
      "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2808
      • C:\Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe
        "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2748
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2588
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:2396
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2584
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:2308
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2604
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:1128
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\local.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\local.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2664
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\local.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\local.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:1684
      • C:\Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe
        "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2768

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\DbrlM.bat

          Filesize

          152B

          MD5

          deba559edd7e3c8dcc3e27362ac41cde

          SHA1

          a5688d69bc779c836262874f344de154ae7e7219

          SHA256

          49f5709cc8357f7e406ae904f54d82d476094e2e93dc93308147d8ed9a175a90

          SHA512

          9296532fd85f48b49802be12a8581453f84274cada2433d082d5901bd86c57c86bdcc4bd4420d2f6014d1e964f0b1234eb0d34bd23ffad22c9ae02f615847fbd

        • \Users\Admin\AppData\Roaming\Window Updates\winupdt3.exe

          Filesize

          1.7MB

          MD5

          a3b30670513b0a5fa5f6eb5483cf15f6

          SHA1

          351e5ba4517fdec2a33ee141ae554a382d3d83a1

          SHA256

          dd46270b76520f6fd1c46087c48c64f0b8e94f6c899fe70570428f4ca263d421

          SHA512

          094e832ecababfe95abb128d0b31648211d5b9620993d0867442dfd317d5575ccb9329a11f7c9d7549a24009d75712f3c93a136a2d36274b9f9b8dc7acc673f6

        • memory/588-0-0x0000000000400000-0x00000000005B6000-memory.dmp

          Filesize

          1.7MB

        • memory/588-42-0x00000000032B0000-0x0000000003466000-memory.dmp

          Filesize

          1.7MB

        • memory/588-44-0x0000000000400000-0x00000000005B6000-memory.dmp

          Filesize

          1.7MB

        • memory/2748-71-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2748-76-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2748-95-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2748-60-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2748-93-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2748-66-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2748-55-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2748-84-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2748-81-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2748-79-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2748-56-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2748-74-0x0000000000400000-0x000000000045C000-memory.dmp

          Filesize

          368KB

        • memory/2768-58-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2768-70-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2768-52-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2768-59-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2768-65-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2808-54-0x0000000000400000-0x00000000005B6000-memory.dmp

          Filesize

          1.7MB