Analysis

  • max time kernel
    127s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    12-07-2024 13:45

General

  • Target

    3d9e3bf3109bfe73bccfb57e360fe465_JaffaCakes118.exe

  • Size

    680KB

  • MD5

    3d9e3bf3109bfe73bccfb57e360fe465

  • SHA1

    36bd2e71a35f678c8d1e8066e616706f2dcb8610

  • SHA256

    b4b4889b0d6ac058b3d39e62c9cb32fea0abb700b92e1e10325e0854470aac50

  • SHA512

    f24992b8f03df563eca83cce818a0d5af04094acde38af3d0acf1ec40ae87272156f56ab72121becbd82f77d296ad39b60939d2282e0167b11dcf3b33db43be7

  • SSDEEP

    12288:a5393whFOBbosXQsI6f9fqAPzzEeEZchCBywRiaxJDj8DkIonQmP0Ove/diuHc:a53uhFzsAibzzEe9wRiaLSkI8QhOQ18

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 6 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\3d9e3bf3109bfe73bccfb57e360fe465_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\3d9e3bf3109bfe73bccfb57e360fe465_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2128
    • 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" /silent
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2208
      • 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:2068
        • 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:2816
        • C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\Windows Defender Security.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:2428
          • 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:2532
            • 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:2480
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Get-MpPreference -verbose
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2560
        • 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:600
          • 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:1404
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c ""C:\Users\Admin\AppData\Local\Temp\O3N7IjOzWIVc.bat" "
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:2472
          • C:\Windows\SysWOW64\chcp.com
            chcp 65001
            5⤵
              PID:1480
            • C:\Windows\SysWOW64\PING.EXE
              ping -n 10 localhost
              5⤵
              • Runs ping.exe
              PID:348
            • 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:1724
              • 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:1256

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\CabEEF3.tmp

      Filesize

      70KB

      MD5

      49aebf8cbd62d92ac215b2923fb1b9f5

      SHA1

      1723be06719828dda65ad804298d0431f6aff976

      SHA256

      b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

      SHA512

      bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

    • C:\Users\Admin\AppData\Local\Temp\O3N7IjOzWIVc.bat

      Filesize

      239B

      MD5

      4c0cf454c67d0e0a6673e83bcf9d6f4b

      SHA1

      ebfb15f75be74baea92dd23bd9189d84e0d239db

      SHA256

      1c730d6304c563f6703b6da3d182878bc1a81af7ba51041eaa8966e5810dae33

      SHA512

      6770eea686031316cc1b67ef3d5a687cffc8377899a069ee5f42a538df60070cd6d102479daba0d60b9e1154308ef59d0389799d67e091879e01c5803a368a90

    • C:\Users\Admin\AppData\Local\Temp\TarEF15.tmp

      Filesize

      181KB

      MD5

      4ea6026cf93ec6338144661bf1202cd1

      SHA1

      a1dec9044f750ad887935a01430bf49322fbdcb7

      SHA256

      8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

      SHA512

      6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

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

      Filesize

      648KB

      MD5

      763dd9b7f2a5183a1380bee36889f936

      SHA1

      cdc7f9911a853973fc83d0e1a51ee5e82da347c9

      SHA256

      4be9a02e54e86920ed2bcaef3d28253ad0f4f3b005a14c656d74966589ca2039

      SHA512

      7ce621d758a7e12d026d669a5a9827e4dbec130baf05c51e8937227b9f35f5ef7ecfc4e60202f1e3d2f7aa67d665f612bfa0db92cd1ec3d2420a8207b152e37c

    • memory/1256-125-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1724-115-0x0000000000F20000-0x0000000000FC8000-memory.dmp

      Filesize

      672KB

    • memory/2068-20-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2068-15-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2068-17-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2068-16-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2068-14-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2068-25-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2068-23-0x0000000000400000-0x000000000048C000-memory.dmp

      Filesize

      560KB

    • memory/2068-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2208-26-0x0000000073380000-0x0000000073A6E000-memory.dmp

      Filesize

      6.9MB

    • memory/2208-12-0x00000000003F0000-0x00000000003FA000-memory.dmp

      Filesize

      40KB

    • memory/2208-10-0x0000000073380000-0x0000000073A6E000-memory.dmp

      Filesize

      6.9MB

    • memory/2208-9-0x00000000002A0000-0x0000000000348000-memory.dmp

      Filesize

      672KB

    • memory/2208-8-0x000000007338E000-0x000000007338F000-memory.dmp

      Filesize

      4KB

    • memory/2428-34-0x0000000000820000-0x00000000008C8000-memory.dmp

      Filesize

      672KB

    • memory/2532-44-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB