Analysis

  • max time kernel
    136s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    16-07-2024 18:53

General

  • Target

    4f99850bfde0c6703b4f2c8420b9dc8f_JaffaCakes118.exe

  • Size

    680KB

  • MD5

    4f99850bfde0c6703b4f2c8420b9dc8f

  • SHA1

    c60d92f1e0529b2e770858e180906bf9fae631a9

  • SHA256

    94dc30c7b03813bb558ec30577f0761dc2bfcedd3aa0dea665a88ab84f08aa33

  • SHA512

    0d311592bc2dc5ececb3afae6dee5842b9f6a37710d29f5f1a3fe8a27d3e43a625a57039bef92044744d8a0225c52260cc9757b148deb9e0c4e72781e1a89aec

  • SSDEEP

    12288:75393whFOBbQVXQsI6f9fqAPzzEeEZchCBywRiaxJDj8DkIonQmP0Ove/diuHc:753uhF7VAibzzEe9wRiaLSkI8QhOQ18

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

ajith

C2

23.105.131.178:7812

Mutex

VNM_MUTEX_NdVd2sPSSqFdo7I35g

Attributes
  • encryption_key

    jyerms3KOWmt3C9DBFuq

  • install_name

    Windows Defender Security.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Update

  • subdirectory

    SubDir

Signatures

  • Contains code to disable Windows Defender 5 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 5 IoCs
  • VenomRAT

    VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 5 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

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

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4f99850bfde0c6703b4f2c8420b9dc8f_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\4f99850bfde0c6703b4f2c8420b9dc8f_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2948
    • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Windows Security.exe_protected.exe
      "C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Windows Security.exe_protected.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2372
      • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Windows Security.exe_protected.exe
        "C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Windows Security.exe_protected.exe"
        3⤵
        • Modifies Windows Defender Real-time Protection settings
        • Executes dropped EXE
        • Loads dropped DLL
        • Windows security modification
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2816
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Windows Security.exe_protected.exe" /rl HIGHEST /f
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2636
        • C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:2740
          • C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe
            "C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2888
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe" /rl HIGHEST /f
              6⤵
              • Scheduled Task/Job: Scheduled Task
              PID:2044
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Get-MpPreference -verbose
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2868
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2080
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
            5⤵
            • Deletes itself
            PID:1588
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c ""C:\Users\Admin\AppData\Local\Temp\XrXc0XasW4AB.bat" "
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1884
          • C:\Windows\SysWOW64\chcp.com
            chcp 65001
            5⤵
              PID:2124
            • C:\Windows\SysWOW64\PING.EXE
              ping -n 10 localhost
              5⤵
              • Runs ping.exe
              PID:2960
            • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Windows Security.exe_protected.exe
              "C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Windows Security.exe_protected.exe"
              5⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious use of SetThreadContext
              • Suspicious use of WriteProcessMemory
              PID:1512
              • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Windows Security.exe_protected.exe
                "C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Windows Security.exe_protected.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:2540

    Network

    MITRE ATT&CK Enterprise v15

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Cab204F.tmp

      Filesize

      70KB

      MD5

      49aebf8cbd62d92ac215b2923fb1b9f5

      SHA1

      1723be06719828dda65ad804298d0431f6aff976

      SHA256

      b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

      SHA512

      bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

    • C:\Users\Admin\AppData\Local\Temp\Tar20BF.tmp

      Filesize

      181KB

      MD5

      4ea6026cf93ec6338144661bf1202cd1

      SHA1

      a1dec9044f750ad887935a01430bf49322fbdcb7

      SHA256

      8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

      SHA512

      6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

    • C:\Users\Admin\AppData\Local\Temp\XrXc0XasW4AB.bat

      Filesize

      239B

      MD5

      219a9f9d8083bd104abca107ae6bc832

      SHA1

      61262ff1c2bbfc9880846c4befadb82460b9b53c

      SHA256

      e0b0721a88249699e417e5ebe1881b7a43415e612a90344a39ea6965da519b6f

      SHA512

      563ea154e8fdd52b1b580e83f85be5c666ea50f69fad01fcda6cbe7247ab555fa8e29d95b4c7bb1cff83ee4d39a8a8ddcae176838a57e39fbbe658badb00d0c1

    • \Users\Admin\AppData\Local\Temp\7ZipSfx.000\Windows Security.exe_protected.exe

      Filesize

      648KB

      MD5

      763dd9b7f2a5183a1380bee36889f936

      SHA1

      cdc7f9911a853973fc83d0e1a51ee5e82da347c9

      SHA256

      4be9a02e54e86920ed2bcaef3d28253ad0f4f3b005a14c656d74966589ca2039

      SHA512

      7ce621d758a7e12d026d669a5a9827e4dbec130baf05c51e8937227b9f35f5ef7ecfc4e60202f1e3d2f7aa67d665f612bfa0db92cd1ec3d2420a8207b152e37c

    • memory/2372-28-0x00000000735A0000-0x0000000073C8E000-memory.dmp

      Filesize

      6.9MB

    • memory/2372-8-0x00000000735AE000-0x00000000735AF000-memory.dmp

      Filesize

      4KB

    • memory/2372-9-0x0000000001330000-0x00000000013D8000-memory.dmp

      Filesize

      672KB

    • memory/2372-10-0x00000000735A0000-0x0000000073C8E000-memory.dmp

      Filesize

      6.9MB

    • memory/2372-12-0x0000000000240000-0x000000000024A000-memory.dmp

      Filesize

      40KB

    • memory/2740-36-0x0000000000AE0000-0x0000000000B88000-memory.dmp

      Filesize

      672KB

    • memory/2816-27-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2816-19-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2816-18-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2816-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2816-22-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2816-25-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2816-16-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2816-14-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2888-45-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB