Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 04:15

General

  • Target
    1e820ed6dccf8ec6694a9113c9c173cc3a347b5c5e34c093c104da0f82f47afb.exe
  • Size 4.4MB
  • Sample240527-evmtbsgg82
  • SHA256 1e820ed6dccf8ec6694a9113c9c173cc3a347b5c5e34c093c104da0f82f47afb
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect PurpleFox Rootkit 10 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 11 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 5 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 12 IoCs

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

  • Drops file in System32 directory 3 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
  • Modifies Internet Explorer settings 1 TTPs 39 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 8 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1e820ed6dccf8ec6694a9113c9c173cc3a347b5c5e34c093c104da0f82f47afb.exe
    "C:\Users\Admin\AppData\Local\Temp\1e820ed6dccf8ec6694a9113c9c173cc3a347b5c5e34c093c104da0f82f47afb.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1896
    • C:\Users\Admin\AppData\Local\Temp\R.exe
      C:\Users\Admin\AppData\Local\Temp\\R.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      PID:628
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 528
        3⤵
        • Program crash
        PID:1336
    • 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:2052
      • 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:1972
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 2 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:1008
    • C:\Users\Admin\AppData\Local\Temp\HD_1e820ed6dccf8ec6694a9113c9c173cc3a347b5c5e34c093c104da0f82f47afb.exe
      C:\Users\Admin\AppData\Local\Temp\HD_1e820ed6dccf8ec6694a9113c9c173cc3a347b5c5e34c093c104da0f82f47afb.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1596
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe" http://se.360.cn/
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2520
        • C:\Program Files\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files\Internet Explorer\IEXPLORE.EXE" http://se.360.cn/
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3444
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3444 CREDAT:17410 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:4080
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 628 -ip 628
    1⤵
      PID:4216
    • C:\Windows\SysWOW64\TXPlatfor.exe
      C:\Windows\SysWOW64\TXPlatfor.exe -auto
      1⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2876
      • 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:708

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
          • Size 471B
          • SHA256 4353c8e772765f9f44b5b51678d48e558f5c3ef3b2ff2a04d3fcfecf47540619
          • MD5 SHA1 SHA512

          7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
          • Size 404B
          • SHA256 ebb9e1f439a715480aa69eadc7d66efeec6b3726b6653efb49f856a94a09f70f
          • MD5 SHA1 SHA512

          verC2C3.tmp

          • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verC2C3.tmp
          • Size 15KB
          • SHA256 557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
          • MD5 SHA1 SHA512 SSDEEP

          suggestions[1].en-US

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6SQF6WJH\suggestions[1].en-US
          • Size 17KB
          • SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
          • MD5 SHA1 SHA512 SSDEEP

          HD_1e820ed6dccf8ec6694a9113c9c173cc3a347b5c5e34c093c104da0f82f47afb.exe

          • Path C:\Users\Admin\AppData\Local\Temp\HD_1e820ed6dccf8ec6694a9113c9c173cc3a347b5c5e34c093c104da0f82f47afb.exe
          • Size 2.0MB
          • SHA256 c506e1eddacc729428a61f021faae0287471545fb32b5deb5e1d1e7f6f1f576a
          • MD5 SHA1 SHA512 SSDEEP

          HD_X.dat

          • Path C:\Users\Admin\AppData\Local\Temp\HD_X.dat
          • Size 2.4MB
          • SHA256 b10e20c356c254af8151a48c1d2878a227f22c5ee5d851189971215bc269fe9d
          • 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

          240594906.txt

          • Path C:\Windows\SysWOW64\240594906.txt
          • Size 899KB
          • SHA256 44cbaca512e3765ac72cc01bf5ab4c67eebd85ee22926cc30c069922428cbb1a
          • MD5 SHA1 SHA512 SSDEEP

          memory/708-36-0x0000000010000000-0x00000000101B6000-memory.dmp

          memory/708-41-0x0000000010000000-0x00000000101B6000-memory.dmp

          memory/708-38-0x0000000010000000-0x00000000101B6000-memory.dmp

          memory/2052-18-0x0000000010000000-0x00000000101B6000-memory.dmp

          memory/2052-13-0x0000000010000000-0x00000000101B6000-memory.dmp

          memory/2052-15-0x0000000010000000-0x00000000101B6000-memory.dmp

          memory/2052-14-0x0000000010000000-0x00000000101B6000-memory.dmp

          memory/2876-25-0x0000000010000000-0x00000000101B6000-memory.dmp

          memory/2876-33-0x0000000010000000-0x00000000101B6000-memory.dmp

          memory/2876-23-0x0000000010000000-0x00000000101B6000-memory.dmp

          memory/2876-24-0x0000000010000000-0x00000000101B6000-memory.dmp

          memory/2876-21-0x0000000010000000-0x00000000101B6000-memory.dmp