Analysis

  • max time kernel
    149s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    07-04-2024 23:16

General

  • Target

    e616af1d52ca2271af70c2b9f973894d_JaffaCakes118.exe

  • Size

    512KB

  • MD5

    e616af1d52ca2271af70c2b9f973894d

  • SHA1

    3c870883d02cd6cec366022d1c619b73a15e2c4f

  • SHA256

    3468f34b8f72a76cff295420bc5693ef6a072df4e03a3b727b49fdffb3291ab5

  • SHA512

    ca76ee66ca3be007f18ba95d4ddb2ca9eff2646c4bf5777cad989575bf5eda41f1075c70764ae3be11051ac17e8a3048b49585bf0f5b9c6feade576e35753795

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj69:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5M

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 21 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 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e616af1d52ca2271af70c2b9f973894d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\e616af1d52ca2271af70c2b9f973894d_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:1108
    • C:\Windows\SysWOW64\ckgmelvcsc.exe
      ckgmelvcsc.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:2384
      • C:\Windows\SysWOW64\irrvbslf.exe
        C:\Windows\system32\irrvbslf.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:2472
    • C:\Windows\SysWOW64\qwzntbjrkibzmus.exe
      qwzntbjrkibzmus.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2996
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c nkzerqgkwltga.exe
        3⤵
          PID:2584
      • C:\Windows\SysWOW64\irrvbslf.exe
        irrvbslf.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:2592
      • C:\Windows\SysWOW64\nkzerqgkwltga.exe
        nkzerqgkwltga.exe
        2⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2636
      • 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:2496
        • C:\Windows\splwow64.exe
          C:\Windows\splwow64.exe 12288
          3⤵
            PID:2548

      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

        64ae00270ebb34d2fa8e5a0f223eb0e3

        SHA1

        c819df4be42f4ee57cc078e71354d8875c8a18b7

        SHA256

        d12c9c7892f7ae1252e076602647348c5df8525f3e27bd704c9b83263321cd2b

        SHA512

        f39ef61816ab0866c70a82d64d0f46fd99734c5715eae5a9873c7f682d3130e85362e5e5e64eef4210f1e46fcb1610caa05579706f1cf610c427fac20536b80e

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

        Filesize

        20KB

        MD5

        369376ab306cebd085fd49257bd94423

        SHA1

        ac66ef509bf8fd685fce9d6ea896cb7022677ffc

        SHA256

        66259a3a347c14a698106a2a99275e485a4446a071c8a2b9cf25bb1c2878c43f

        SHA512

        29337b122253e52f4e1ba67f8990a381210d9d32250d7f809ae6d0170583ccf001a25ebf5ec4ce1f709ef25a4ca10650a27c18b5843a1cdc37b2a387da04e019

      • C:\Windows\SysWOW64\nkzerqgkwltga.exe

        Filesize

        512KB

        MD5

        099d1e0e80966beec378bda3fe157ebb

        SHA1

        0b9358d3b0e68e41f422af25f9aa7ad3c968232f

        SHA256

        75e36632bb3cc3aff3e8968a8746a0ee29e65b1840f3cc1a2d777bce1ba36c23

        SHA512

        3f654cc6423f01127a42b80378f2df6ddd25fe4d2e9f8fe9feb46b041b6df34466b657e823b277c56e408c5414d58fb3563cd4d1a507287985a232d6d0eefd5d

      • C:\Windows\SysWOW64\qwzntbjrkibzmus.exe

        Filesize

        512KB

        MD5

        6682af76f8ec178ee49aca3989307129

        SHA1

        f12b4bd4ec61bbcdd7c9ad499181fbd35181804b

        SHA256

        5b65d228763d072850ae7529fa6ad13a8ffa1c02312c01b6457c23a176feceb0

        SHA512

        dd03507daeaf5fc03bc22860a558c5949889ed58fa76371c64f19db21b6233b01fa1c7e6f9c497463403aadce7c5273da37e42f463374862f144f277f384bac0

      • C:\Windows\mydoc.rtf

        Filesize

        223B

        MD5

        06604e5941c126e2e7be02c5cd9f62ec

        SHA1

        4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

        SHA256

        85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

        SHA512

        803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

      • \Windows\SysWOW64\ckgmelvcsc.exe

        Filesize

        512KB

        MD5

        50d640488006ab1b71c953a9d955f2ad

        SHA1

        cd4ba598cce15ff3ad994a471475c0d803ad4509

        SHA256

        87852cc841a55d1d5776df3775e745f4d087f67513962b368d194d86a0905566

        SHA512

        1381addfd46f7c3e071d5f4db27a6734666a7e1b5a4a49b23bda30cbf8077b4d5b908729c8c16453ef466dc0088722b25fced15afb2bca9f78c2ac9f1c2b3c27

      • \Windows\SysWOW64\irrvbslf.exe

        Filesize

        512KB

        MD5

        237512a9b56cdf5d779650499b71ec31

        SHA1

        1e279475317912a10b1d6dd5f4750b5fcaa1cfea

        SHA256

        b312143ec54a984ba0f0568a672666ba7d79a472e10a186745cd0b7b91cfe82d

        SHA512

        186392d16ab59aff45d872a0bf343a30b192852e472d41a7079a389f0b4817a17f7217911e798c84cd20fb628a9c58ab7b80d849d9556c1db54ee9e094f27b3f

      • memory/1108-0-0x0000000000400000-0x0000000000496000-memory.dmp

        Filesize

        600KB

      • memory/2496-51-0x0000000070FAD000-0x0000000070FB8000-memory.dmp

        Filesize

        44KB

      • memory/2496-50-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/2496-45-0x000000002FF61000-0x000000002FF62000-memory.dmp

        Filesize

        4KB

      • memory/2496-84-0x0000000070FAD000-0x0000000070FB8000-memory.dmp

        Filesize

        44KB

      • memory/2496-105-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB