Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-07-2024 14:22

General

  • Target

    30bbc309dddebd1a5640668ecb389849_JaffaCakes118.exe

  • Size

    700KB

  • MD5

    30bbc309dddebd1a5640668ecb389849

  • SHA1

    73024487befa71389c4644c1c468dc0bdc4d6d30

  • SHA256

    a5eb4c027297ecaf9bf022f9c77b743fbe5515d8802c285e5bf1d3c163cd53f2

  • SHA512

    8c7d2ff517127db305e0fcb4366ae11439212c7363c6a6089efa17d2d1b8d48dd98a77393b6e26a05db2e91f6fbed1d736d2326b8286508efa887c7548a6c60b

  • SSDEEP

    12288:i0AoEJrM2OEX+67rqc8oXNhMt/YmdXtyiWxJV1qf0uEAkF1pfxjG3uQNI1S:MxJMgze0ukPJC/CS

Malware Config

Signatures

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 1 IoCs
  • Modifies firewall policy service 3 TTPs 10 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 4 IoCs
  • 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 2 TTPs

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

  • UPX packed file 9 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 57 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\30bbc309dddebd1a5640668ecb389849_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\30bbc309dddebd1a5640668ecb389849_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5072
    • C:\Users\Admin\AppData\Local\Temp\30bbc309dddebd1a5640668ecb389849_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\30bbc309dddebd1a5640668ecb389849_JaffaCakes118.exe"
      2⤵
      • Checks computer location settings
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1512
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\desktop.bat" "
        3⤵
          PID:3832
        • C:\Users\Admin\AppData\Local\Temp\Server-mine.exe
          "C:\Users\Admin\AppData\Local\Temp\Server-mine.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          PID:1044
        • C:\Users\Admin\AppData\Local\Temp\5r5hN2.exe
          "C:\Users\Admin\AppData\Local\Temp\5r5hN2.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3912
          • C:\Users\Admin\AppData\Local\Temp\5r5hN2.exe
            "C:\Users\Admin\AppData\Local\Temp\5r5hN2.exe"
            4⤵
            • Executes dropped EXE
            • Writes to the Master Boot Record (MBR)
            • Suspicious use of SetThreadContext
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1972
            • C:\Users\Admin\AppData\Local\Temp\5r5hN2.exe
              "C:\Users\Admin\AppData\Local\Temp\5r5hN2.exe"
              5⤵
              • Adds policy Run key to start application
              • Boot or Logon Autostart Execution: Active Setup
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:868
              • 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
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:2268
                • C:\Windows\SysWOW64\reg.exe
                  REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
                  7⤵
                  • Modifies firewall policy service
                  • Modifies registry key
                  PID:4432
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\5r5hN2.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\5r5hN2.exe:*:Enabled:Windows Messanger" /f
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:1396
                • C:\Windows\SysWOW64\reg.exe
                  REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\5r5hN2.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\5r5hN2.exe:*:Enabled:Windows Messanger" /f
                  7⤵
                  • Modifies firewall policy service
                  • Modifies registry key
                  PID:4808
              • 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
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:4900
                • C:\Windows\SysWOW64\reg.exe
                  REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
                  7⤵
                  • Modifies firewall policy service
                  • Modifies registry key
                  PID:872
              • 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\WinUpdates.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\WinUpdates.exe:*:Enabled:Windows Messanger" /f
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:796
                • C:\Windows\SysWOW64\reg.exe
                  REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\WinUpdates.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\WinUpdates.exe:*:Enabled:Windows Messanger" /f
                  7⤵
                  • Modifies firewall policy service
                  • Modifies registry key
                  PID:1316

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\5r5hN2.exe

      Filesize

      392KB

      MD5

      38447f942740fd09c3a3e18e4ade7d1c

      SHA1

      5c0844bc2d4cb91e9794892bab28babd7d05d99a

      SHA256

      b0d7644176587f768eb05ac73b507fe4f6cf7f4d5056a308a10ce180e649bbcb

      SHA512

      9f3409f6c5383b186a5b9edf44748380035706485509e9196e1b094e9f5ca0fa071c3215def7aa16d58d003958eefbac00cbfa4adff9fa055c142c038be07004

    • C:\Users\Admin\AppData\Local\Temp\Server-mine.exe

      Filesize

      76KB

      MD5

      f9f2d37a8253d0f4a59cab3287ccb543

      SHA1

      4b42c0c1205f3a3403afbdd21ce95f14e18d8ced

      SHA256

      af9c1ce49667e314c89a947b35555173a2eb72b3293670217665e2b940bb65ea

      SHA512

      a4c12f4d1099c8f4fafacde4a3c8de8136be948a1547decc25b17d4d8de24be4693f6db60fd41ffe1f24cf21779bb7ec7f2d6c2b13c2acd52b8dace09427c569

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

      Filesize

      378B

      MD5

      67f23640e9351a83d05971c9659d3ded

      SHA1

      1d75868da9e44dee0b3d8511bfefc1a243534d6c

      SHA256

      6aeebb9e693bb77776ab8f139bca5571929dd5211ceaea5f6619fdb9832d0aa1

      SHA512

      14f49e0ed06344e260f12bb0b0a0ee58dccb5a3b7ea5b0a432ae222a1e2f7a69f69df2167e3423cf6eab503578ef397a838414e8bb96c8b04531215e22427d63

    • memory/868-62-0x0000000000400000-0x0000000000473000-memory.dmp

      Filesize

      460KB

    • memory/868-66-0x0000000000400000-0x0000000000473000-memory.dmp

      Filesize

      460KB

    • memory/868-89-0x0000000000400000-0x0000000000473000-memory.dmp

      Filesize

      460KB

    • memory/868-72-0x0000000000400000-0x0000000000473000-memory.dmp

      Filesize

      460KB

    • memory/868-69-0x0000000000400000-0x0000000000473000-memory.dmp

      Filesize

      460KB

    • memory/868-59-0x0000000000400000-0x0000000000473000-memory.dmp

      Filesize

      460KB

    • memory/868-51-0x0000000000400000-0x0000000000473000-memory.dmp

      Filesize

      460KB

    • memory/868-47-0x0000000000400000-0x0000000000473000-memory.dmp

      Filesize

      460KB

    • memory/868-49-0x0000000000400000-0x0000000000473000-memory.dmp

      Filesize

      460KB

    • memory/1512-5-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1512-3-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1512-40-0x0000000000400000-0x0000000000480000-memory.dmp

      Filesize

      512KB

    • memory/1972-44-0x0000000000400000-0x0000000000434000-memory.dmp

      Filesize

      208KB

    • memory/1972-55-0x0000000000400000-0x0000000000434000-memory.dmp

      Filesize

      208KB

    • memory/1972-42-0x0000000000400000-0x0000000000434000-memory.dmp

      Filesize

      208KB

    • memory/3912-33-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/5072-0-0x0000000000400000-0x00000000004AF000-memory.dmp

      Filesize

      700KB