Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-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 1 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 1 IoCs
  • VenomRAT

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

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 7 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 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3d9e3bf3109bfe73bccfb57e360fe465_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\3d9e3bf3109bfe73bccfb57e360fe465_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3936
    • 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
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2324
      • 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
        • Checks computer location settings
        • Executes dropped EXE
        • Windows security modification
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:860
        • 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:3064
        • 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:4248
          • 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:4616
            • 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:4832
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Get-MpPreference -verbose
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1588
        • 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:4632
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
            5⤵
              PID:3196
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VAHHduj5TixU.bat" "
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:2244
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              5⤵
                PID:4664
              • C:\Windows\SysWOW64\PING.EXE
                ping -n 10 localhost
                5⤵
                • Runs ping.exe
                PID:4992
              • 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
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:1336
                • 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
                  PID:2080
                • 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:220

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Windows Security.exe_protected.exe.log

        Filesize

        507B

        MD5

        8cf94b5356be60247d331660005941ec

        SHA1

        fdedb361f40f22cb6a086c808fc0056d4e421131

        SHA256

        52a5b2d36f2b72cb02c695cf7ef46444dda73d4ea82a73e0894c805fa9987bc0

        SHA512

        b886dfc8bf03f8627f051fb6e2ac40ae2e7713584695a365728eb2e2c87217830029aa35bd129c642fa03dde3f7a7dd5690b16248676be60a6bb5f497fb23651

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

        Filesize

        648KB

        MD5

        763dd9b7f2a5183a1380bee36889f936

        SHA1

        cdc7f9911a853973fc83d0e1a51ee5e82da347c9

        SHA256

        4be9a02e54e86920ed2bcaef3d28253ad0f4f3b005a14c656d74966589ca2039

        SHA512

        7ce621d758a7e12d026d669a5a9827e4dbec130baf05c51e8937227b9f35f5ef7ecfc4e60202f1e3d2f7aa67d665f612bfa0db92cd1ec3d2420a8207b152e37c

      • C:\Users\Admin\AppData\Local\Temp\VAHHduj5TixU.bat

        Filesize

        239B

        MD5

        51f28b52d509bd7808b85b8c2e1553e2

        SHA1

        acf9b1aee2d2eebfb25e073a9f1d59af7d975c01

        SHA256

        7bbdfd2742c48cecf78a3ccac36351e0c0433e70d128dd14e691d522278ff3b7

        SHA512

        078597853754b38c333a7b80a7ea16c2d5f0932c75553ce6939d4ec813cb8db311348d7fdeb42ba130c7bcc7b26dca0ccec709def16672ca5fbfd4fbc1f57ac2

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_u2qylwcp.1ow.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/860-28-0x0000000072D00000-0x00000000734B0000-memory.dmp

        Filesize

        7.7MB

      • memory/860-88-0x0000000072D00000-0x00000000734B0000-memory.dmp

        Filesize

        7.7MB

      • memory/860-83-0x0000000072D00000-0x00000000734B0000-memory.dmp

        Filesize

        7.7MB

      • memory/860-31-0x0000000006A60000-0x0000000006A9C000-memory.dmp

        Filesize

        240KB

      • memory/860-30-0x00000000063E0000-0x00000000063F2000-memory.dmp

        Filesize

        72KB

      • memory/860-22-0x0000000000400000-0x000000000048C000-memory.dmp

        Filesize

        560KB

      • memory/860-27-0x0000000072D00000-0x00000000734B0000-memory.dmp

        Filesize

        7.7MB

      • memory/860-29-0x00000000056D0000-0x0000000005736000-memory.dmp

        Filesize

        408KB

      • memory/1588-42-0x0000000005490000-0x00000000054B2000-memory.dmp

        Filesize

        136KB

      • memory/1588-77-0x00000000079B0000-0x00000000079BE000-memory.dmp

        Filesize

        56KB

      • memory/1588-80-0x0000000007AA0000-0x0000000007AA8000-memory.dmp

        Filesize

        32KB

      • memory/1588-79-0x0000000007AC0000-0x0000000007ADA000-memory.dmp

        Filesize

        104KB

      • memory/1588-37-0x0000000004FB0000-0x0000000004FE6000-memory.dmp

        Filesize

        216KB

      • memory/1588-38-0x00000000057B0000-0x0000000005DD8000-memory.dmp

        Filesize

        6.2MB

      • memory/1588-44-0x0000000005730000-0x0000000005796000-memory.dmp

        Filesize

        408KB

      • memory/1588-78-0x00000000079C0000-0x00000000079D4000-memory.dmp

        Filesize

        80KB

      • memory/1588-76-0x0000000007980000-0x0000000007991000-memory.dmp

        Filesize

        68KB

      • memory/1588-54-0x0000000005F50000-0x00000000062A4000-memory.dmp

        Filesize

        3.3MB

      • memory/1588-55-0x0000000006460000-0x000000000647E000-memory.dmp

        Filesize

        120KB

      • memory/1588-56-0x0000000006790000-0x00000000067DC000-memory.dmp

        Filesize

        304KB

      • memory/1588-57-0x0000000006A10000-0x0000000006A42000-memory.dmp

        Filesize

        200KB

      • memory/1588-58-0x000000006FB20000-0x000000006FB6C000-memory.dmp

        Filesize

        304KB

      • memory/1588-68-0x0000000006A50000-0x0000000006A6E000-memory.dmp

        Filesize

        120KB

      • memory/1588-69-0x00000000074A0000-0x0000000007543000-memory.dmp

        Filesize

        652KB

      • memory/1588-75-0x0000000007A00000-0x0000000007A96000-memory.dmp

        Filesize

        600KB

      • memory/1588-72-0x0000000007DD0000-0x000000000844A000-memory.dmp

        Filesize

        6.5MB

      • memory/1588-73-0x0000000007780000-0x000000000779A000-memory.dmp

        Filesize

        104KB

      • memory/1588-74-0x0000000007800000-0x000000000780A000-memory.dmp

        Filesize

        40KB

      • memory/2324-17-0x0000000005490000-0x0000000005A34000-memory.dmp

        Filesize

        5.6MB

      • memory/2324-26-0x0000000072D00000-0x00000000734B0000-memory.dmp

        Filesize

        7.7MB

      • memory/2324-18-0x0000000004DE0000-0x0000000004E72000-memory.dmp

        Filesize

        584KB

      • memory/2324-19-0x0000000004EE0000-0x0000000004F7C000-memory.dmp

        Filesize

        624KB

      • memory/2324-21-0x0000000004D10000-0x0000000004D1A000-memory.dmp

        Filesize

        40KB

      • memory/2324-16-0x0000000072D00000-0x00000000734B0000-memory.dmp

        Filesize

        7.7MB

      • memory/2324-15-0x00000000002C0000-0x0000000000368000-memory.dmp

        Filesize

        672KB

      • memory/2324-14-0x0000000072D0E000-0x0000000072D0F000-memory.dmp

        Filesize

        4KB

      • memory/4616-71-0x00000000070A0000-0x00000000070AA000-memory.dmp

        Filesize

        40KB