Analysis

  • max time kernel
    149s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    09-04-2024 05:16

General

  • Target

    e94e7933300cd60bc3f011dd41a72632_JaffaCakes118.exe

  • Size

    512KB

  • MD5

    e94e7933300cd60bc3f011dd41a72632

  • SHA1

    1f4d08415db105328491b185bb0c5dcdfaeba684

  • SHA256

    b48ea3a507988bed8643928598a189275333fe4b40b233547eedd682d4eb6870

  • SHA512

    3a1d92669271812213ed1ae80814eebd830fd8996260f46f2957ca8311ef58278b402dbd1fe1fe1334103bc0826b7443d51951c4a63603a6cea38870195be3f5

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6e:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5J

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\e94e7933300cd60bc3f011dd41a72632_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\e94e7933300cd60bc3f011dd41a72632_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:1512
    • C:\Windows\SysWOW64\pbuiyauurx.exe
      pbuiyauurx.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:772
      • C:\Windows\SysWOW64\yovkitkf.exe
        C:\Windows\system32\yovkitkf.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:2576
    • C:\Windows\SysWOW64\cvbnkqlgjzuxmxp.exe
      cvbnkqlgjzuxmxp.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2032
    • C:\Windows\SysWOW64\yovkitkf.exe
      yovkitkf.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:2136
    • C:\Windows\SysWOW64\kccznhkhlwtja.exe
      kccznhkhlwtja.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2652
    • 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:2488
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:2856

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      68B

      MD5

      4aa671ad497fc5111055a5cd73ed00f7

      SHA1

      cb07b411329fc10b812a00e529780b6423499e28

      SHA256

      b5c2d14c06ec67d8aef21a76a152d01ca4f01ce3f84c4842030dcbd00c5f10ef

      SHA512

      eea59c86be5eb784263378651bff550fb1cd158f48b121e4438826bfbf2129bf13cb61914fe3e60a953922164d7314e2b582f08fb7e9664482f37ee056b9ccd8

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

      Filesize

      20KB

      MD5

      e0a3f52a29f459398c082d3305f026f8

      SHA1

      b8f7a352446f5d87c1321d0ba9ed50b98769890e

      SHA256

      b2f4e36321469ef2abe9dc8d581ea2b1ae1872e6b711a668d4e39e639e7f4d40

      SHA512

      4fc3a1dda389edeb9008099781b466a5cb597227ea496472526ac27f59647937986ea2a32b08a03ac5e88e8875eed453633915f87b211e2a1247c2f11200f748

    • C:\Users\Admin\Documents\TraceRequest.doc.exe

      Filesize

      512KB

      MD5

      5e11861a53d596f1eca58e42cfc2c100

      SHA1

      3488d4764d7cdef95662fc6cce718eb675ed5959

      SHA256

      e94a843a1dbc4d3592a01ffb809aa9660ad6e0dbcaa2dee5caf995af05c0e682

      SHA512

      c2dd24d86b0557d07a9c1eb2bfe3313e7a5a5b83defb424f4c5733ccc314369f4fa9e3309b8f7ac57663648b883862d0bfcce2919b417a4da6813fb7665bd98b

    • C:\Windows\SysWOW64\cvbnkqlgjzuxmxp.exe

      Filesize

      512KB

      MD5

      86e921ad79c47c77b5585d2082c46024

      SHA1

      453ceda61badcbdb129d6e4e40fb4befd0991d0c

      SHA256

      b4808fdd640da4592b060a7d7a3efd5237bb0e3174685b04cba4c8bb0e1f5b76

      SHA512

      b4eb51cda1c6326d5caf7d78b697fb114b3a0bb11d1bea46e8440745e951a63229ba37f03aa200c945b035ede3f3b65b7aaaff09547582c6304be58deceb39b1

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \Windows\SysWOW64\kccznhkhlwtja.exe

      Filesize

      512KB

      MD5

      5f2cbeba244dcf24382c21caaaa6fe21

      SHA1

      bbf08772f9c69de252ce1c9b03f5e8267a7a4d41

      SHA256

      41ed732bd923ac4db07684fc537fc765be50ba9894a8f2452766d7d340eb631f

      SHA512

      a8f28ebad7bc2b8395b3df5e755481cb0d6c013520f15bf8938530b48cef6b426a56ba9b8144f50ee5632ccabd2c126d7064210906f352730fd17bcf997b56a9

    • \Windows\SysWOW64\pbuiyauurx.exe

      Filesize

      512KB

      MD5

      a6e9ca7963c268d82d31a70773e2b752

      SHA1

      a8a574a168e6fe47db473efdc117657f76378fed

      SHA256

      af29fd9ad1037f44815a773726ff04e8499e83f4eb7a4cb559070bee7cba9a37

      SHA512

      d1ce24438e52e19c5edf1dfd29e7aa01807a6ccb853f7e500c727e6a5c2ae25c6e7031d6ff532c796f4f002e63dc7a0bc04ee744ef4e3dc769fc92e9a38a1431

    • \Windows\SysWOW64\yovkitkf.exe

      Filesize

      512KB

      MD5

      15994be24833b4aee41399724073f3fe

      SHA1

      c5d9e28ac334da7f24ea39e4216fa199bde9df5d

      SHA256

      6fb28110e8b3551a4e2c3f6d2f056a342ef494d31862291f7b48b61030889694

      SHA512

      219b6228bf23697aa1c59756ac302f47e5ec2c2821561fd2df0ac27a1682468893246d4ffcc949fcd67579859ed17b0a73910a89cda3ea00d71db338ad189b57

    • memory/1512-0-0x0000000000400000-0x0000000000496000-memory.dmp

      Filesize

      600KB

    • memory/2488-47-0x00000000715AD000-0x00000000715B8000-memory.dmp

      Filesize

      44KB

    • memory/2488-46-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2488-45-0x000000002FE71000-0x000000002FE72000-memory.dmp

      Filesize

      4KB

    • memory/2488-81-0x00000000715AD000-0x00000000715B8000-memory.dmp

      Filesize

      44KB

    • memory/2488-102-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB