Analysis

  • max time kernel
    6s
  • max time network
    8s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    25-06-2024 04:57

General

  • Target

    0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe

  • Size

    4.2MB

  • MD5

    0ca81a3bec58298a318d19bdf208cb99

  • SHA1

    cec944263887c4e3ac2956f2a27cbc9be86591d6

  • SHA256

    ffe3d6f61150e4a25a4e9549252dc1a505bfd2247f7d3aacec825e1787f089ea

  • SHA512

    eda9f6e37ea306e38fa5cdaf5c036782dab19a8dca628af63adb959d75579d014fd17bce5f4e9b5c7c6b24cea2cbaf95fbe849fe93b3e5faa87dbf69bdea1940

  • SSDEEP

    12288:yeASxuABkJro+1xtmnzHurEuXu4EnWu5uQpNsuiJoXO1+iy1Qq8a+jI3TiVYzfTF:v

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Skidy

C2

roasted-flag.auto.playit.gg:51952

Mutex

VNM_MUTEX_bsVy5mHRmaFZMQOLbI

Attributes
  • encryption_key

    ux20jjbixeS7PecgmZeq

  • install_name

    windows.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    windows

  • subdirectory

    $windows

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.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 6 IoCs
  • Windows security modification 2 TTPs 2 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 NtSetInformationThreadHideFromDebugger 16 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Delays execution with timeout.exe 2 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 62 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:760
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:3040
    • C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe"
      2⤵
        PID:2064
      • C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe"
        2⤵
        • Modifies Windows Defender Real-time Protection settings
        • Loads dropped DLL
        • Windows security modification
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3004
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "windows" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe" /rl HIGHEST /f
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2504
        • C:\Users\Admin\AppData\Roaming\$windows\windows.exe
          "C:\Users\Admin\AppData\Roaming\$windows\windows.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2644
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c timeout 1
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:2192
            • C:\Windows\SysWOW64\timeout.exe
              timeout 1
              5⤵
              • Delays execution with timeout.exe
              PID:2968
          • C:\Users\Admin\AppData\Roaming\$windows\windows.exe
            "C:\Users\Admin\AppData\Roaming\$windows\windows.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1724
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks" /create /tn "windows" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\$windows\windows.exe" /rl HIGHEST /f
              5⤵
              • Scheduled Task/Job: Scheduled Task
              PID:1272
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c ""C:\Users\Admin\AppData\Local\Temp\6PMtcOGqI1ko.bat" "
              5⤵
                PID:2580
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 2644 -s 844
              4⤵
              • Loads dropped DLL
              • Program crash
              PID:1888
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "powershell" Get-MpPreference -verbose
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2484
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1044 -s 868
          2⤵
          • Program crash
          PID:2692

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • \Users\Admin\AppData\Roaming\$windows\windows.exe

        Filesize

        4.2MB

        MD5

        0ca81a3bec58298a318d19bdf208cb99

        SHA1

        cec944263887c4e3ac2956f2a27cbc9be86591d6

        SHA256

        ffe3d6f61150e4a25a4e9549252dc1a505bfd2247f7d3aacec825e1787f089ea

        SHA512

        eda9f6e37ea306e38fa5cdaf5c036782dab19a8dca628af63adb959d75579d014fd17bce5f4e9b5c7c6b24cea2cbaf95fbe849fe93b3e5faa87dbf69bdea1940

      • memory/1044-1-0x0000000000E70000-0x000000000129C000-memory.dmp

        Filesize

        4.2MB

      • memory/1044-2-0x0000000000A20000-0x0000000000ABE000-memory.dmp

        Filesize

        632KB

      • memory/1044-3-0x00000000740B0000-0x000000007479E000-memory.dmp

        Filesize

        6.9MB

      • memory/1044-0-0x00000000740BE000-0x00000000740BF000-memory.dmp

        Filesize

        4KB

      • memory/1724-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2644-24-0x0000000000FA0000-0x00000000013CC000-memory.dmp

        Filesize

        4.2MB

      • memory/3004-16-0x0000000000400000-0x000000000048C000-memory.dmp

        Filesize

        560KB

      • memory/3004-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/3004-8-0x0000000000400000-0x000000000048C000-memory.dmp

        Filesize

        560KB

      • memory/3004-6-0x0000000000400000-0x000000000048C000-memory.dmp

        Filesize

        560KB

      • memory/3004-4-0x0000000000400000-0x000000000048C000-memory.dmp

        Filesize

        560KB

      • memory/3004-14-0x0000000000400000-0x000000000048C000-memory.dmp

        Filesize

        560KB

      • memory/3004-12-0x0000000000400000-0x000000000048C000-memory.dmp

        Filesize

        560KB

      • memory/3004-5-0x0000000000400000-0x000000000048C000-memory.dmp

        Filesize

        560KB