Analysis

  • max time kernel
    152s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/06/2024, 12:27

General

  • Target
    463a39509f104fd6ac1bc26ec182eabc5376d2a4ec9b0675913b5be326033da1.exe
  • Size 9.3MB
  • Sample240625-pmwrdazckh
  • SHA256 463a39509f104fd6ac1bc26ec182eabc5376d2a4ec9b0675913b5be326033da1
  • 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
  • Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 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\463a39509f104fd6ac1bc26ec182eabc5376d2a4ec9b0675913b5be326033da1.exe
    "C:\Users\Admin\AppData\Local\Temp\463a39509f104fd6ac1bc26ec182eabc5376d2a4ec9b0675913b5be326033da1.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:392
    • C:\Users\Admin\AppData\Local\Temp\R.exe
      C:\Users\Admin\AppData\Local\Temp\\R.exe
      2⤵
      • Server Software Component: Terminal Services DLL
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      PID:1816
    • 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:2300
      • 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:4928
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 2 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:4824
    • C:\Users\Admin\AppData\Local\Temp\HD_463a39509f104fd6ac1bc26ec182eabc5376d2a4ec9b0675913b5be326033da1.exe
      C:\Users\Admin\AppData\Local\Temp\HD_463a39509f104fd6ac1bc26ec182eabc5376d2a4ec9b0675913b5be326033da1.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:1280
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1280 -s 1156
        3⤵
        • Program crash
        PID:1632
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
    1⤵
      PID:2700
    • 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:2600
      • C:\Windows\SysWOW64\Remote Data.exe
        "C:\Windows\system32\Remote Data.exe" "c:\windows\system32\240657718.txt",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:4048
    • C:\Windows\SysWOW64\TXPlatfor.exe
      C:\Windows\SysWOW64\TXPlatfor.exe -auto
      1⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1356
      • 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:1012
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1280 -ip 1280
      1⤵
        PID:2280
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=2756 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:4116

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              HD_463a39509f104fd6ac1bc26ec182eabc5376d2a4ec9b0675913b5be326033da1.exe

              • Path C:\Users\Admin\AppData\Local\Temp\HD_463a39509f104fd6ac1bc26ec182eabc5376d2a4ec9b0675913b5be326033da1.exe
              • Size 6.6MB
              • SHA256 a440738fbc84f80c770e9afde70c2efdc1906294e217545b3e5b87a661b3e4a3
              • MD5 SHA1 SHA512 SSDEEP

              HD_X.dat

              • Path C:\Users\Admin\AppData\Local\Temp\HD_X.dat
              • Size 2.7MB
              • SHA256 b64f97ddcdc3a060e1ef576a297034881150258f5a68bccfe50ac5550ac7ba7d
              • 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

              RCXD9E2.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\RCXD9E2.tmp
              • Size 2.3MB
              • SHA256 54636c573bc4b66a7d60b58235761eccd3ea0fca332c10a67fa923c58de9d4f8
              • MD5 SHA1 SHA512 SSDEEP

              X.ico

              • Path C:\Users\Admin\AppData\Local\Temp\X.ico
              • Size 69KB
              • SHA256 020c8e0963f89f4b14538b7d69e83c6fec44a29bbbd52fbb6deb2be5c697f450
              • MD5 SHA1 SHA512 SSDEEP

              240657718.txt

              • Path C:\Windows\SysWOW64\240657718.txt
              • Size 899KB
              • SHA256 58eeabfc76554c3dcf830ce62d64b9915dfa8ca0f699eacfe063f16cdbad0ec9
              • MD5 SHA1 SHA512 SSDEEP

              Remote Data.exe

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

              memory/1012-37-0x0000000010000000-0x00000000101B6000-memory.dmp

              memory/1012-40-0x0000000010000000-0x00000000101B6000-memory.dmp

              memory/1012-45-0x0000000010000000-0x00000000101B6000-memory.dmp

              memory/1280-66-0x0000000000D80000-0x0000000001EC6000-memory.dmp

              memory/1280-70-0x0000000000D80000-0x0000000001EC6000-memory.dmp

              memory/1280-67-0x0000000000D80000-0x0000000001EC6000-memory.dmp

              memory/1280-46-0x0000000000D80000-0x0000000001EC6000-memory.dmp

              memory/1356-26-0x0000000010000000-0x00000000101B6000-memory.dmp

              memory/1356-29-0x0000000010000000-0x00000000101B6000-memory.dmp

              memory/1356-28-0x0000000010000000-0x00000000101B6000-memory.dmp

              memory/2300-23-0x0000000010000000-0x00000000101B6000-memory.dmp

              memory/2300-19-0x0000000010000000-0x00000000101B6000-memory.dmp

              memory/2300-20-0x0000000010000000-0x00000000101B6000-memory.dmp

              memory/2300-17-0x0000000010000000-0x00000000101B6000-memory.dmp