Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/06/2024, 04:59

General

  • Target
    b7d2730d6854b02f587b09ceab40365c61015eda97496b207423ed7a5638b1c2.exe
  • Size 4.9MB
  • Sample240612-fmdfcs1fmr
  • SHA256 b7d2730d6854b02f587b09ceab40365c61015eda97496b207423ed7a5638b1c2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect PurpleFox Rootkit 9 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 9 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.

  • Drops file in Drivers directory 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 4 IoCs
  • UPX packed file 11 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 37 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b7d2730d6854b02f587b09ceab40365c61015eda97496b207423ed7a5638b1c2.exe
    "C:\Users\Admin\AppData\Local\Temp\b7d2730d6854b02f587b09ceab40365c61015eda97496b207423ed7a5638b1c2.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:116
    • C:\Users\Admin\AppData\Local\Temp\RVN.exe
      C:\Users\Admin\AppData\Local\Temp\\RVN.exe
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4524
      • 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\RVN.exe > nul
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3472
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 2 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:4632
    • C:\Users\Admin\AppData\Local\Temp\HD_b7d2730d6854b02f587b09ceab40365c61015eda97496b207423ed7a5638b1c2.exe
      C:\Users\Admin\AppData\Local\Temp\HD_b7d2730d6854b02f587b09ceab40365c61015eda97496b207423ed7a5638b1c2.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3844
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" http://se.360.cn/
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2208
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2208 CREDAT:17410 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:4220
  • C:\Windows\SysWOW64\TXPlatforn.exe
    C:\Windows\SysWOW64\TXPlatforn.exe -auto
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:3840
    • C:\Windows\SysWOW64\TXPlatforn.exe
      C:\Windows\SysWOW64\TXPlatforn.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:4112

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        suggestions[1].en-US

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\LU15KQ7Y\suggestions[1].en-US
        • Size 17KB
        • SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
        • MD5 SHA1 SHA512 SSDEEP

        HD_X.dat

        • Path C:\Users\Admin\AppData\Local\Temp\HD_X.dat
        • Size 1.5MB
        • SHA256 457ce508f8cc1b720a9d7e16329d3a1c1f0942b181d5b060166f56122f9cd055
        • MD5 SHA1 SHA512 SSDEEP

        HD_b7d2730d6854b02f587b09ceab40365c61015eda97496b207423ed7a5638b1c2.exe

        • Path C:\Users\Admin\AppData\Local\Temp\HD_b7d2730d6854b02f587b09ceab40365c61015eda97496b207423ed7a5638b1c2.exe
        • Size 3.4MB
        • SHA256 4bf93e07c6bf61621e933c7e82dbbd67fd827def3e20017fcb3f672705c3f86e
        • MD5 SHA1 SHA512 SSDEEP

        RVN.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RVN.exe
        • Size 377KB
        • SHA256 57a920389c044e3f5cf93dabff67070b4511e79779b6f874e08f92d8b0d7afbd
        • MD5 SHA1 SHA512 SSDEEP

        memory/3840-15-0x0000000010000000-0x00000000101B6000-memory.dmp

        memory/3840-13-0x0000000010000000-0x00000000101B6000-memory.dmp

        memory/3840-17-0x0000000010000000-0x00000000101B6000-memory.dmp

        memory/3840-16-0x0000000010000000-0x00000000101B6000-memory.dmp

        memory/3840-27-0x0000000010000000-0x00000000101B6000-memory.dmp

        memory/4112-28-0x0000000010000000-0x00000000101B6000-memory.dmp

        memory/4112-34-0x0000000010000000-0x00000000101B6000-memory.dmp

        memory/4524-6-0x0000000010000000-0x00000000101B6000-memory.dmp

        memory/4524-10-0x0000000010000000-0x00000000101B6000-memory.dmp

        memory/4524-7-0x0000000010000000-0x00000000101B6000-memory.dmp

        memory/4524-4-0x0000000010000000-0x00000000101B6000-memory.dmp