Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-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 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\4f99850bfde0c6703b4f2c8420b9dc8f_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\4f99850bfde0c6703b4f2c8420b9dc8f_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3848
    • 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
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3588
      • 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⤵
        • Executes dropped EXE
        PID:1488
      • 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:4260
        • 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:1512
        • 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:1608
          • 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:2152
            • 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:1912
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Get-MpPreference -verbose
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:436
        • 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:1972
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
            5⤵
              PID:4028
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\EYYmrjWxAN1C.bat" "
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1528
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              5⤵
                PID:1804
              • C:\Windows\SysWOW64\PING.EXE
                ping -n 10 localhost
                5⤵
                • Runs ping.exe
                PID:4372
              • 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 use of WriteProcessMemory
                PID:1100
                • 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:4692

      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 Defender Security.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\EYYmrjWxAN1C.bat

        Filesize

        239B

        MD5

        125a39549860a1706361e648d4a2552a

        SHA1

        e611307a9a2b1ed7baeb629aed9cda97901f3b17

        SHA256

        5e549cfa59ea0459fe72d8f60353b3b5df072fcdaa4bbfb004abf3779de3ff9b

        SHA512

        38b7dcd3a522435ad43c45a4b58ba52c66a3c0e638388732bf8204bb9895021af42ca741516b9c000560ce8ebff25461cd3a09aa4f1b59f4ac974a368823f821

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jyqpym4d.a0o.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/436-73-0x00000000072F0000-0x000000000730A000-memory.dmp

        Filesize

        104KB

      • memory/436-43-0x0000000005240000-0x0000000005262000-memory.dmp

        Filesize

        136KB

      • memory/436-75-0x0000000007570000-0x0000000007606000-memory.dmp

        Filesize

        600KB

      • memory/436-55-0x0000000005FB0000-0x0000000005FCE000-memory.dmp

        Filesize

        120KB

      • memory/436-74-0x0000000007360000-0x000000000736A000-memory.dmp

        Filesize

        40KB

      • memory/436-72-0x0000000007940000-0x0000000007FBA000-memory.dmp

        Filesize

        6.5MB

      • memory/436-56-0x0000000005FE0000-0x000000000602C000-memory.dmp

        Filesize

        304KB

      • memory/436-80-0x0000000007610000-0x0000000007618000-memory.dmp

        Filesize

        32KB

      • memory/436-79-0x0000000007630000-0x000000000764A000-memory.dmp

        Filesize

        104KB

      • memory/436-78-0x0000000007530000-0x0000000007544000-memory.dmp

        Filesize

        80KB

      • memory/436-71-0x00000000071D0000-0x0000000007273000-memory.dmp

        Filesize

        652KB

      • memory/436-37-0x00000000027D0000-0x0000000002806000-memory.dmp

        Filesize

        216KB

      • memory/436-38-0x0000000005390000-0x00000000059B8000-memory.dmp

        Filesize

        6.2MB

      • memory/436-70-0x0000000006590000-0x00000000065AE000-memory.dmp

        Filesize

        120KB

      • memory/436-44-0x00000000052E0000-0x0000000005346000-memory.dmp

        Filesize

        408KB

      • memory/436-76-0x00000000074F0000-0x0000000007501000-memory.dmp

        Filesize

        68KB

      • memory/436-60-0x00000000700E0000-0x000000007012C000-memory.dmp

        Filesize

        304KB

      • memory/436-51-0x0000000005AB0000-0x0000000005E04000-memory.dmp

        Filesize

        3.3MB

      • memory/436-59-0x0000000007190000-0x00000000071C2000-memory.dmp

        Filesize

        200KB

      • memory/436-77-0x0000000007520000-0x000000000752E000-memory.dmp

        Filesize

        56KB

      • memory/2152-58-0x0000000007250000-0x000000000725A000-memory.dmp

        Filesize

        40KB

      • memory/3588-21-0x00000000057F0000-0x00000000057FA000-memory.dmp

        Filesize

        40KB

      • memory/3588-16-0x00000000732C0000-0x0000000073A70000-memory.dmp

        Filesize

        7.7MB

      • memory/3588-17-0x0000000005E80000-0x0000000006424000-memory.dmp

        Filesize

        5.6MB

      • memory/3588-18-0x00000000058D0000-0x0000000005962000-memory.dmp

        Filesize

        584KB

      • memory/3588-27-0x00000000732C0000-0x0000000073A70000-memory.dmp

        Filesize

        7.7MB

      • memory/3588-15-0x0000000000D90000-0x0000000000E38000-memory.dmp

        Filesize

        672KB

      • memory/3588-14-0x00000000732CE000-0x00000000732CF000-memory.dmp

        Filesize

        4KB

      • memory/3588-19-0x0000000005970000-0x0000000005A0C000-memory.dmp

        Filesize

        624KB

      • memory/4260-31-0x0000000006530000-0x000000000656C000-memory.dmp

        Filesize

        240KB

      • memory/4260-88-0x00000000732C0000-0x0000000073A70000-memory.dmp

        Filesize

        7.7MB

      • memory/4260-30-0x0000000005EB0000-0x0000000005EC2000-memory.dmp

        Filesize

        72KB

      • memory/4260-29-0x0000000005290000-0x00000000052F6000-memory.dmp

        Filesize

        408KB

      • memory/4260-28-0x00000000732C0000-0x0000000073A70000-memory.dmp

        Filesize

        7.7MB

      • memory/4260-83-0x00000000732C0000-0x0000000073A70000-memory.dmp

        Filesize

        7.7MB

      • memory/4260-23-0x0000000000400000-0x000000000048C000-memory.dmp

        Filesize

        560KB

      • memory/4260-26-0x00000000732C0000-0x0000000073A70000-memory.dmp

        Filesize

        7.7MB