Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    25-06-2024 18:37

General

  • Target

    cd2fd2638217e5b4002c25d69bf2ab79313789836473f66b5a7220d908295737.exe

  • Size

    8.4MB

  • MD5

    8053279e1596ddda1ddd37f1548f3d26

  • SHA1

    0d7d9b6b47a15f9e460278f8b89784e7f7a6837e

  • SHA256

    cd2fd2638217e5b4002c25d69bf2ab79313789836473f66b5a7220d908295737

  • SHA512

    7278aa1721082786a4acedfc0588c62b957a8b891ce49b53ecb69adfb39557f92664bbd5bd20cae281b1510d80c8984952b9994e6cc5820ecc2238e249767824

  • SSDEEP

    196608:KWT9nO77mnAjXBFxNtm1mdivZDtlK/pD3/:K77ljRltmEdysB

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 3 IoCs

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

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 13 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 4 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 2 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cd2fd2638217e5b4002c25d69bf2ab79313789836473f66b5a7220d908295737.exe
    "C:\Users\Admin\AppData\Local\Temp\cd2fd2638217e5b4002c25d69bf2ab79313789836473f66b5a7220d908295737.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      C:\Users\Admin\AppData\Local\Temp\\svchost.exe
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1248
      • 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\svchost.exe > nul
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2680
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 2 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:2840
    • C:\Users\Admin\AppData\Local\Temp\svchos.exe
      C:\Users\Admin\AppData\Local\Temp\\svchos.exe
      2⤵
      • Server Software Component: Terminal Services DLL
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      PID:2496
    • C:\Users\Admin\AppData\Local\Temp\HD_cd2fd2638217e5b4002c25d69bf2ab79313789836473f66b5a7220d908295737.exe
      C:\Users\Admin\AppData\Local\Temp\HD_cd2fd2638217e5b4002c25d69bf2ab79313789836473f66b5a7220d908295737.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
      • Suspicious use of WriteProcessMemory
      PID:3036
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 736
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:1860
  • C:\Windows\SysWOW64\TXPlatforn.exe
    C:\Windows\SysWOW64\TXPlatforn.exe -auto
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2596
    • 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:2740
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "Ö÷¶¯·ÀÓù·þÎñÄ£¿é"
    1⤵
      PID:2536
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe -k "Ö÷¶¯·ÀÓù·þÎñÄ£¿é"
      1⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2488
      • C:\Windows\SysWOW64\Ö÷¶¯·ÀÓù·þÎñÄ£¿é.exe
        C:\Windows\system32\Ö÷¶¯·ÀÓù·þÎñÄ£¿é.exe "c:\windows\system32\259397230.txt",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2464

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\HD_X.dat

      Filesize

      1.7MB

      MD5

      7309f7465a5fa7b1d493e9d953eb0e01

      SHA1

      3f8b1d211ea4c67df3a40c58ecfa7595aa934683

      SHA256

      d6c80aa345adbc77a8300ae9a0a00593ca3e5cf737bafe5689732e55f9032b87

      SHA512

      93ef0cf7a01cf45c3de6dd660817381a2149358c13457cab82dd363583b0137e59453c6386cf147bab1b33a43541168d52c3e8bd5006037de123a84d19f12cd6

    • \Users\Admin\AppData\Local\Temp\HD_cd2fd2638217e5b4002c25d69bf2ab79313789836473f66b5a7220d908295737.exe

      Filesize

      6.8MB

      MD5

      7d65651595a7892e740949ac6ead4d7a

      SHA1

      6273a92085f0ce795a9cec0a6b29e7248f5700ff

      SHA256

      201238949a27d5c2bc087cc7c2413c4b7f225a58bde58c04b6e567814dd9c363

      SHA512

      cf9265b0948ad601760a6daeacd1b5b046cb4e60212bd6d851d5cda4b29bb41e3b16e8a9069787d63dff8cb6c1f0c404b43dc57676c4dff32f487e8e02ce93c2

    • \Users\Admin\AppData\Local\Temp\svchos.exe

      Filesize

      93KB

      MD5

      3b377ad877a942ec9f60ea285f7119a2

      SHA1

      60b23987b20d913982f723ab375eef50fafa6c70

      SHA256

      62954fdf65e629b39a29f539619d20691332184c6b6be5a826128a8e759bfa84

      SHA512

      af3a71f867ad9d28772c48b521097f9bf8931eb89fd2974e8de10990241419a39ddc3c0b36dd38aac4fdf14e1f0c5e228692618e93adce958d5b5dab8940e46f

    • \Users\Admin\AppData\Local\Temp\svchost.exe

      Filesize

      377KB

      MD5

      a4329177954d4104005bce3020e5ef59

      SHA1

      23c29e295e2dbb8454012d619ca3f81e4c16e85a

      SHA256

      6156d003d54dcf2ee92f21bd6e7a6a7f91730bd2804381260bcabe465abe6ddd

      SHA512

      81e9d456a4abfc7cd9e0943d4a0ce15523362c3179f3368381d1d7974f80a9f9113b5404b96e67e91684e0ea1895b7d0073e4c48d0bfc4fd0244b1af6acf0208

    • \Windows\SysWOW64\259397230.txt

      Filesize

      50KB

      MD5

      f42dad9791f2877f286e830bfae050fa

      SHA1

      9c8cb960d4bb9e26e650644cae0c660447e59af8

      SHA256

      5da7dac78e9fa2f6a0d0264280632c6eafa73e5b903102bdeeb48d49b781da1a

      SHA512

      5467b6b969e70c45dff97437ac0f1b6bc648023812e9e488f6aa6a3da238949d4b764d9fe0d73e848c90a9904771769b9ec8ceba6644f4ef0cc046f1a47d7bce

    • \Windows\SysWOW64\Ö÷¶¯·ÀÓù·þÎñÄ£¿é.exe

      Filesize

      43KB

      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

    • memory/1248-9-0x0000000010000000-0x00000000101B6000-memory.dmp

      Filesize

      1.7MB

    • memory/1248-8-0x0000000010000000-0x00000000101B6000-memory.dmp

      Filesize

      1.7MB

    • memory/1248-7-0x0000000010000000-0x00000000101B6000-memory.dmp

      Filesize

      1.7MB

    • memory/1248-5-0x0000000010000000-0x00000000101B6000-memory.dmp

      Filesize

      1.7MB

    • memory/1988-111-0x00000000040B0000-0x0000000005232000-memory.dmp

      Filesize

      17.5MB

    • memory/1988-51-0x00000000040B0000-0x0000000005232000-memory.dmp

      Filesize

      17.5MB

    • memory/2596-27-0x0000000010000000-0x00000000101B6000-memory.dmp

      Filesize

      1.7MB

    • memory/2596-18-0x0000000010000000-0x00000000101B6000-memory.dmp

      Filesize

      1.7MB

    • memory/2740-38-0x0000000010000000-0x00000000101B6000-memory.dmp

      Filesize

      1.7MB

    • memory/2740-53-0x0000000010000000-0x00000000101B6000-memory.dmp

      Filesize

      1.7MB

    • memory/2740-35-0x0000000010000000-0x00000000101B6000-memory.dmp

      Filesize

      1.7MB

    • memory/3036-58-0x0000000000A00000-0x0000000001B82000-memory.dmp

      Filesize

      17.5MB

    • memory/3036-59-0x0000000000A00000-0x0000000001B82000-memory.dmp

      Filesize

      17.5MB

    • memory/3036-52-0x0000000000A00000-0x0000000001B82000-memory.dmp

      Filesize

      17.5MB