Analysis

  • max time kernel
    150s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    13-06-2024 04:15

General

  • Target

    a3cba6af2053213e5c97c7e1cf3e54d6_JaffaCakes118.exe

  • Size

    512KB

  • MD5

    a3cba6af2053213e5c97c7e1cf3e54d6

  • SHA1

    12c3245fa21cd0a84a78f0178ba6181509c6fe4e

  • SHA256

    c2f3050f83b17739dc4ed6343275ec86e69d658e06b1230d18bf2fd1669351d6

  • SHA512

    c881faa0900d2b8be206772866519cd3acb9723b602988968fa3edcec3182af429389d11dd2d4939bf950c302fc15671db6a9ca73efb6e7082393bdac14a291c

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6j:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5M

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
  • 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 5 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 FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a3cba6af2053213e5c97c7e1cf3e54d6_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\a3cba6af2053213e5c97c7e1cf3e54d6_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:2248
    • C:\Windows\SysWOW64\lretkxplru.exe
      lretkxplru.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:2596
      • C:\Windows\SysWOW64\hexzdgjv.exe
        C:\Windows\system32\hexzdgjv.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2488
    • C:\Windows\SysWOW64\ketxyvjopphpfia.exe
      ketxyvjopphpfia.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2700
    • C:\Windows\SysWOW64\hexzdgjv.exe
      hexzdgjv.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:2576
    • C:\Windows\SysWOW64\ueltoyjllxmwm.exe
      ueltoyjllxmwm.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2688
    • 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:2368

    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

      4352d9d18dfc249cce99795292f26c84

      SHA1

      836e09351ed6e6cd02b32ad271ade43fc2667400

      SHA256

      a4dfa7ae67047a7df0ef8bad7be9e079a4453d5d03bdb70c61173621a86e0f98

      SHA512

      d9eafa9b86beaed63d61d306b7b1aa3e68866a51e22c551196d88205821218c148bccfb1c67d4a73d05556bb08cb9fba8c782e73e9325b3c5ca4d7b8d489e663

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

      Filesize

      68B

      MD5

      8fece46fa02bb4a82581c8c1642f1d0a

      SHA1

      14bb4f9c472bbdd32003bca34d5f252bbd4da7d3

      SHA256

      44eddaeeb1a8a281a318b022971354a954c4862193a171c1affd468b34849fee

      SHA512

      26b449b0d5805b73bbd443d83c2b77bdd08af57d1af06c62c835242f580884a34a9ab4d6df03586967e603f19249cde13a540e1df772f9792034a86f999e337c

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

      Filesize

      20KB

      MD5

      bcb18f911d469d112b9c03e69010fbf8

      SHA1

      7342381e2b9ec946cfe855c0fee7a66772defd6a

      SHA256

      bdd3d0d0c756a1e044b4067cb5a8d6186d108ccdc894e3dbb2f3d0e63a71afd8

      SHA512

      928809a21d36c13f604578be0a4e6f0541657207c6235f25028cdc8cd0c2de0ac51ede7780392cb0061c126610063f31779099746028d0293d72b769fee62481

    • C:\Windows\SysWOW64\hexzdgjv.exe

      Filesize

      512KB

      MD5

      119d5e975389ba52d8626081145a9449

      SHA1

      45ff6750bd7d0938ea2aada1e1752f3ad7c9b908

      SHA256

      34328839fbeaefc7102662e503ee89b69297061dce28af3a50aa57e66f707844

      SHA512

      a36f553bf1229e8c248a3957b8fd24f5ca13c2e49939a2bd9b672ac5bb5bdf660949b9251949c995f9c61ef476c4957a38eb67aa09cb9b907dcbf977830ecc7f

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \Windows\SysWOW64\ketxyvjopphpfia.exe

      Filesize

      512KB

      MD5

      191449c019b008f29181a34a5b9da4fe

      SHA1

      9a89ec48d97c2e063f1b32c3e33264b97fc606d2

      SHA256

      c3fbcdf7a39687a81a80998c647618300f5f04821cf1f35e1a0351277f56cea3

      SHA512

      2e17074229840e02b522cae0d573ca4fb767573f4756a13f5ad2c7dc8ec28dc61fd04435ba5f2c73c9a678e3b797c9db32182cf0e0075c2d5cf159cffd82f7a9

    • \Windows\SysWOW64\lretkxplru.exe

      Filesize

      512KB

      MD5

      ead293d718d91fe4b39a2bf932b54ef4

      SHA1

      dee2dcfb472ea4e16090b7f2987acd8a59a8a89e

      SHA256

      6423973ed4393e20665a7acb879e45d8759b874c405d99c424bbe379f115168f

      SHA512

      1f29528d6b1da6df845fbe1db3612ea348f74f0b8108bc5d6782d016229725dd3e5203e52434903e856bd9459820acd5a6e42ca1140563d2daf8c2bf9b0e80e3

    • \Windows\SysWOW64\ueltoyjllxmwm.exe

      Filesize

      512KB

      MD5

      58b6a05825364615fa7ce007e50118a8

      SHA1

      be16d0bd3446fddd033c853a3198699e94b7f740

      SHA256

      a1686b641e51360e44427ec6da2ac15ce8cee79bfa2d80cb849ba098be2d3c45

      SHA512

      66c3d4cb1d0a02e8016285331705650a9313d9e840eb9aa9535aa45c3c8bf57424f9ece975003bbcb75e6d23267d9b1aad47a87ecb9075636b72457c449a13a0

    • memory/2248-0-0x0000000000400000-0x0000000000496000-memory.dmp

      Filesize

      600KB

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

      Filesize

      64KB

    • memory/2468-99-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB