Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 03:32

General

  • Target
    9ca4662893c99195906d4aa57b4a0266539b5c9c0825f6a6b4ddf8cd327ce6f2.exe
  • Size 9.4MB
  • Sample240611-d31vgssfjc
  • SHA256 9ca4662893c99195906d4aa57b4a0266539b5c9c0825f6a6b4ddf8cd327ce6f2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect PurpleFox Rootkit 9 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 10 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • PurpleFox

    PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 3 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 3 IoCs
  • UPX packed file 10 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 6 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9ca4662893c99195906d4aa57b4a0266539b5c9c0825f6a6b4ddf8cd327ce6f2.exe
    "C:\Users\Admin\AppData\Local\Temp\9ca4662893c99195906d4aa57b4a0266539b5c9c0825f6a6b4ddf8cd327ce6f2.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2968
    • C:\Users\Admin\AppData\Local\Temp\R.exe
      C:\Users\Admin\AppData\Local\Temp\\R.exe
      2⤵
      • Sets DLL path for service in the registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      PID:212
    • C:\Users\Admin\AppData\Local\Temp\N.exe
      C:\Users\Admin\AppData\Local\Temp\\N.exe
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4112
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\N.exe > nul
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4884
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 2 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:4976
    • C:\Users\Admin\AppData\Local\Temp\HD_9ca4662893c99195906d4aa57b4a0266539b5c9c0825f6a6b4ddf8cd327ce6f2.exe
      C:\Users\Admin\AppData\Local\Temp\HD_9ca4662893c99195906d4aa57b4a0266539b5c9c0825f6a6b4ddf8cd327ce6f2.exe
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      PID:2516
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 1152
        3⤵
        • Program crash
        PID:4372
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
    1⤵
      PID:4040
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
      1⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:4076
      • C:\Windows\SysWOW64\Remote Data.exe
        "C:\Windows\system32\Remote Data.exe" "c:\windows\system32\240606953.txt",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:5060
    • C:\Windows\SysWOW64\TXPlatfor.exe
      C:\Windows\SysWOW64\TXPlatfor.exe -auto
      1⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2764
      • C:\Windows\SysWOW64\TXPlatfor.exe
        C:\Windows\SysWOW64\TXPlatfor.exe -acsi
        2⤵
        • Drops file in Drivers directory
        • Sets service image path in registry
        • Executes dropped EXE
        • Suspicious behavior: LoadsDriver
        • Suspicious use of AdjustPrivilegeToken
        PID:4792
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2516 -ip 2516
      1⤵
        PID:780

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            HD_9ca4662893c99195906d4aa57b4a0266539b5c9c0825f6a6b4ddf8cd327ce6f2.exe

            • Path C:\Users\Admin\AppData\Local\Temp\HD_9ca4662893c99195906d4aa57b4a0266539b5c9c0825f6a6b4ddf8cd327ce6f2.exe
            • Size 6.7MB
            • SHA256 1512cbcea3882d8c92b5a36f1914481e81a9968e8de3d3b8f19c89f2889e0bae
            • MD5 SHA1 SHA512 SSDEEP

            HD_X.dat

            • Path C:\Users\Admin\AppData\Local\Temp\HD_X.dat
            • Size 2.7MB
            • SHA256 080ece2d8e055cfa011385116e657f41a97233597cb899e8e2d7a3654802ab3d
            • MD5 SHA1 SHA512 SSDEEP

            N.exe

            • Path C:\Users\Admin\AppData\Local\Temp\N.exe
            • Size 377KB
            • SHA256 3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8
            • MD5 SHA1 SHA512 SSDEEP

            R.exe

            • Path C:\Users\Admin\AppData\Local\Temp\R.exe
            • Size 941KB
            • SHA256 bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c
            • MD5 SHA1 SHA512 SSDEEP

            240606953.txt

            • Path C:\Windows\SysWOW64\240606953.txt
            • Size 899KB
            • SHA256 510a61b2f1158403716879a557c399321c82db9824c48ecf0632319572dc70d2
            • MD5 SHA1 SHA512 SSDEEP

            Remote Data.exe

            • Path C:\Windows\SysWOW64\Remote Data.exe
            • Size 60KB
            • SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
            • MD5 SHA1 SHA512 SSDEEP

            memory/2516-51-0x0000000000DF0000-0x0000000001F42000-memory.dmp

            memory/2516-52-0x0000000000DF0000-0x0000000001F42000-memory.dmp

            memory/2516-66-0x0000000000DF0000-0x0000000001F42000-memory.dmp

            memory/2516-42-0x0000000000DF0000-0x0000000001F42000-memory.dmp

            memory/2764-29-0x0000000010000000-0x00000000101B6000-memory.dmp

            memory/2764-26-0x0000000010000000-0x00000000101B6000-memory.dmp

            memory/2764-28-0x0000000010000000-0x00000000101B6000-memory.dmp

            memory/4112-23-0x0000000010000000-0x00000000101B6000-memory.dmp

            memory/4112-18-0x0000000010000000-0x00000000101B6000-memory.dmp

            memory/4112-20-0x0000000010000000-0x00000000101B6000-memory.dmp

            memory/4112-19-0x0000000010000000-0x00000000101B6000-memory.dmp

            memory/4792-46-0x0000000010000000-0x00000000101B6000-memory.dmp

            memory/4792-44-0x0000000010000000-0x00000000101B6000-memory.dmp

            memory/4792-40-0x0000000010000000-0x00000000101B6000-memory.dmp