Analysis

  • max time kernel
    150s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    26-05-2024 05:15

General

  • Target

    ac8bd683789d6db878e85696e43346bc92d468e4524a1aa0ae319975d6dd2c72.exe

  • Size

    8.5MB

  • MD5

    0f67cc2e42069cb24164a7c3a2b3e9cd

  • SHA1

    686c7573dceba02a5e49327521dcb7134c809225

  • SHA256

    ac8bd683789d6db878e85696e43346bc92d468e4524a1aa0ae319975d6dd2c72

  • SHA512

    adc182784d20037b4aff44592bad44139a6bc60cd7da0e96bf456ee32f8503b708fe4dec98f65bf7037e8cc91ef595837b2ea695989618005081ad9470c25a3b

  • SSDEEP

    196608:DWT9nO7MzOJRCsU3lHOYhE0dutEcKEmmI1nzH59a3K2ZXVVoVeB:Z7EO3xatvE05EW1zH5V2ZFVoVeB

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 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 5 IoCs
  • Loads dropped DLL 10 IoCs
  • UPX packed file 11 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 3 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 34 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac8bd683789d6db878e85696e43346bc92d468e4524a1aa0ae319975d6dd2c72.exe
    "C:\Users\Admin\AppData\Local\Temp\ac8bd683789d6db878e85696e43346bc92d468e4524a1aa0ae319975d6dd2c72.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1664
    • 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:2888
      • 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:2632
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 2 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:2912
    • C:\Users\Admin\AppData\Local\Temp\svchos.exe
      C:\Users\Admin\AppData\Local\Temp\\svchos.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      PID:1344
    • C:\Users\Admin\AppData\Local\Temp\HD_ac8bd683789d6db878e85696e43346bc92d468e4524a1aa0ae319975d6dd2c72.exe
      C:\Users\Admin\AppData\Local\Temp\HD_ac8bd683789d6db878e85696e43346bc92d468e4524a1aa0ae319975d6dd2c72.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:2424
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2424 -s 740
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2884
  • C:\Windows\SysWOW64\TXPlatforn.exe
    C:\Windows\SysWOW64\TXPlatforn.exe -auto
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2512
    • 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:2548

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

1
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Remote System Discovery

1
T1018

Replay Monitor

Loading Replay Monitor...

Downloads

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

    1.8MB

    MD5

    4486f3cff55a579b3d14f469deb00373

    SHA1

    d024c5ccce4025d315ad442ffb36629c5a389e8b

    SHA256

    16c9ce3d4d8518e1acc2b9596042224e836bb3e704c1fa0349b5d5ec6fa3d2e8

    SHA512

    596d83f5395b6f073a0550b510c1df30cca575ca660a76f10cfeef074fd42eb965fac75bdee40e8ae5b2db1343fe9daee4096a9ded93f6acdb94970a98703d87

  • C:\Users\Admin\AppData\Local\Temp\svchos.exe
    Filesize

    93KB

    MD5

    3b377ad877a942ec9f60ea285f7119a2

    SHA1

    60b23987b20d913982f723ab375eef50fafa6c70

    SHA256

    62954fdf65e629b39a29f539619d20691332184c6b6be5a826128a8e759bfa84

    SHA512

    af3a71f867ad9d28772c48b521097f9bf8931eb89fd2974e8de10990241419a39ddc3c0b36dd38aac4fdf14e1f0c5e228692618e93adce958d5b5dab8940e46f

  • C:\Users\Admin\AppData\Local\Temp\svchost.exe
    Filesize

    377KB

    MD5

    a4329177954d4104005bce3020e5ef59

    SHA1

    23c29e295e2dbb8454012d619ca3f81e4c16e85a

    SHA256

    6156d003d54dcf2ee92f21bd6e7a6a7f91730bd2804381260bcabe465abe6ddd

    SHA512

    81e9d456a4abfc7cd9e0943d4a0ce15523362c3179f3368381d1d7974f80a9f9113b5404b96e67e91684e0ea1895b7d0073e4c48d0bfc4fd0244b1af6acf0208

  • \Users\Admin\AppData\Local\Temp\HD_ac8bd683789d6db878e85696e43346bc92d468e4524a1aa0ae319975d6dd2c72.exe
    Filesize

    6.7MB

    MD5

    228d6cc0e7e1399dae79eaa5d6f71e52

    SHA1

    290443a75bfd4108abb6e9f7fc14d4da1542314b

    SHA256

    7189cf2950eb69251a80d120d2a75c860de50d2084bdb7c41a3345e34734958b

    SHA512

    bd4b464037ea2ece9331905da72ef33e6803c0e642a5f051146f1e222186bb3b74a6dd28a309e893413282604a804c9132d52c5f8069902721aa78b5b074d743

  • \Windows\SysWOW64\259394734.txt
    Filesize

    50KB

    MD5

    afe2718aa5c70470fd3b116d5f58ac38

    SHA1

    4f39db0403d0c238d4854551a24a42f50c80fb41

    SHA256

    c779f681b4d4361bdf555786b2bfa1adce725084c460448f4f5021b3820b7db2

    SHA512

    51e3b5406596df1bf2f58ac0d4b8b473612f1b2b0321ee4ffe5bb162163ab64f92fcc560dd5d26c3e3bfb2e47194aefcc08d35b9c6b29432da3744747057649e

  • memory/1664-99-0x0000000004140000-0x00000000052D0000-memory.dmp
    Filesize

    17.6MB

  • memory/1664-46-0x0000000004140000-0x00000000052D0000-memory.dmp
    Filesize

    17.6MB

  • memory/2424-47-0x0000000000870000-0x0000000001A00000-memory.dmp
    Filesize

    17.6MB

  • memory/2424-100-0x0000000000870000-0x0000000001A00000-memory.dmp
    Filesize

    17.6MB

  • memory/2424-53-0x0000000000870000-0x0000000001A00000-memory.dmp
    Filesize

    17.6MB

  • memory/2424-52-0x0000000000870000-0x0000000001A00000-memory.dmp
    Filesize

    17.6MB

  • memory/2512-25-0x0000000010000000-0x00000000101B6000-memory.dmp
    Filesize

    1.7MB

  • memory/2548-40-0x0000000010000000-0x00000000101B6000-memory.dmp
    Filesize

    1.7MB

  • memory/2548-29-0x0000000010000000-0x00000000101B6000-memory.dmp
    Filesize

    1.7MB

  • memory/2548-30-0x0000000010000000-0x00000000101B6000-memory.dmp
    Filesize

    1.7MB

  • memory/2548-27-0x0000000010000000-0x00000000101B6000-memory.dmp
    Filesize

    1.7MB

  • memory/2548-45-0x0000000010000000-0x00000000101B6000-memory.dmp
    Filesize

    1.7MB

  • memory/2548-34-0x0000000010000000-0x00000000101B6000-memory.dmp
    Filesize

    1.7MB

  • memory/2888-8-0x0000000010000000-0x00000000101B6000-memory.dmp
    Filesize

    1.7MB

  • memory/2888-5-0x0000000010000000-0x00000000101B6000-memory.dmp
    Filesize

    1.7MB

  • memory/2888-12-0x0000000010000000-0x00000000101B6000-memory.dmp
    Filesize

    1.7MB

  • memory/2888-7-0x0000000010000000-0x00000000101B6000-memory.dmp
    Filesize

    1.7MB