Analysis

  • max time kernel
    150s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    13-06-2024 03:56

General

  • Target

    a3c059f6e292c34cdb25843d8d476568_JaffaCakes118.exe

  • Size

    512KB

  • MD5

    a3c059f6e292c34cdb25843d8d476568

  • SHA1

    70cdebf5cb35849003faa7b46234ac41d9729d10

  • SHA256

    17fe9527a24327cb25e9d87429e849a87e99f871d1848d71220b59f63e960847

  • SHA512

    be3d976b244aad841a887a0fb5e41737bc77ef75188272eba9c3866f1208dab0b75416e87d9441767684275b5bccfea08bb6d7d5e5cf796d3b4e5f33acefbd16

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6I:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5t

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

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

  • Modifies WinLogon 2 TTPs 2 IoCs
  • AutoIT Executable 6 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of FindShellTrayWindow 47 IoCs
  • Suspicious use of SendNotifyMessage 34 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\a3c059f6e292c34cdb25843d8d476568_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\a3c059f6e292c34cdb25843d8d476568_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1532
    • C:\Windows\SysWOW64\fxwyzdnyiq.exe
      fxwyzdnyiq.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2100
      • C:\Windows\SysWOW64\fhaerkjn.exe
        C:\Windows\system32\fhaerkjn.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        PID:2556
    • C:\Windows\SysWOW64\gwqcmizudworijd.exe
      gwqcmizudworijd.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2628
    • C:\Windows\SysWOW64\fhaerkjn.exe
      fhaerkjn.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2740
    • C:\Windows\SysWOW64\yruipirqpnmsh.exe
      yruipirqpnmsh.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2760
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.rtf"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2468
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1280
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Modifies Installed Components in the registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1228

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLV.DOC.exe

      Filesize

      512KB

      MD5

      c0085e2ed1802d2fba894f375832fef0

      SHA1

      89ce8c4edf1db9bbb9f7170dd4d52ac6c1404164

      SHA256

      00d2130920b5d9c3637f15579fd89d3ec0ff2b40676fb2b3cd50a005e696fdb3

      SHA512

      2b1529cc181b61573131805afb93a233c87d5b8d8459db3595ee160737ca595fdb55ccd738bbdbfc3fbe82e86f716fdf1d9b9f5084d2327104fcac83dbf34472

    • C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

      Filesize

      68B

      MD5

      2bc1020ca2df44b05e6b66f7eb1ae058

      SHA1

      895c5ab938126ac1043f5d7f568b4de32f6673fa

      SHA256

      dce3e4410557663b5fd5b1802d1269c9a3b8c29ac715261968f462e0a978e3e3

      SHA512

      b6f11951e7839b260d3d06b7979f408bcd91a5ca5260a11519b35e5d1198faa982a379af17bb3a709f7582a8422dcbbda3a08024ed96f6a786e4fc21b2408501

    • C:\Windows\SysWOW64\gwqcmizudworijd.exe

      Filesize

      512KB

      MD5

      e05a7b6dc0a7e86c0b5de69a1ded3b65

      SHA1

      09109dede8d922822786d7f462d030f060094ed9

      SHA256

      635a6f524d8286e88ebf02dbcc0fa797df1fb76a682ce74c17c662a9d3300761

      SHA512

      8fcd320b698e25b47f3769150d5076546185d0fb65f998cc073d7137f94bf4ec9db4cf79c3b26a8048246f58ac7121c4be1790dad927e68761e7301a0795118f

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \Windows\SysWOW64\fhaerkjn.exe

      Filesize

      512KB

      MD5

      87f43d88f8e0a7018eee12023cd1e46f

      SHA1

      cacc21def8448860e3657fcc16cb1b30b8c5116e

      SHA256

      b75fb6d26dc2ced5d391776431d2df821ac0254d7a4ed0cf3384dc25b311ef4c

      SHA512

      b63e5865c26852a1f565f70f9a742d1fe8cd7b61898db7a284f95b65407b3a686f1c557c9b529a24cf6b0767c26c51fb177917d16e6f6d91fdda43686d64a298

    • \Windows\SysWOW64\fxwyzdnyiq.exe

      Filesize

      512KB

      MD5

      54a0aa1cfe558492a59e8426547fed97

      SHA1

      4cbb5e93e60ef89c7ca69b5701351c145331b70e

      SHA256

      81b9b5edee9fdc32bd8232b5a045c0b246cb411f2869c95a39d4250bad78c99b

      SHA512

      7bafc01d7c0876a3a06a5bb00ff44e7530af7e775421962df65f69341aface41b4e58bdd646ae078b029348911b43743d7f8c8e12197c584aa4bab6cadd4249f

    • \Windows\SysWOW64\yruipirqpnmsh.exe

      Filesize

      512KB

      MD5

      abbe1c34e6d4755253f143b3f8b5b1d6

      SHA1

      fb456979997ce1c2f68c79954ed423c204f57754

      SHA256

      27a84f28258f0268c942fed181fcf68efc9ea1725e05177c3ff6d57e83843d17

      SHA512

      ddad7cd41da321a7aa080b739ba3de71b87f3b6a6dcdef4098903533065acd6005edc0372aac74aa095240b97819dfd606144ddcc60f39b15bc5a1362554067a

    • memory/1228-88-0x0000000002B30000-0x0000000002B40000-memory.dmp

      Filesize

      64KB

    • memory/1532-0-0x0000000000400000-0x0000000000496000-memory.dmp

      Filesize

      600KB

    • memory/2468-45-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB