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Analysis

  • max time kernel
    150s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    08/10/2023, 16:05

General

  • Target

    NEAS.a063bdf078e9c57b66e071e0e79aea1d5965b1c125774d9f1766c72deef305fa_JC.exe

  • Size

    1.3MB

  • MD5

    a576d36617fc88ca550823fb3ec48aa7

  • SHA1

    037a62e13103fc56a1f39b5e904ef23c462f06ab

  • SHA256

    a063bdf078e9c57b66e071e0e79aea1d5965b1c125774d9f1766c72deef305fa

  • SHA512

    5eab68f779302a02f67cd75ed4e142fe72c9add60f9a305da90ffdcd0c75aaec649fd1a5307befdbdbd952a40b8caae67a0baa910838fda4c710b652d0caac88

  • SSDEEP

    24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNY:QHPkVOBTK

Malware Config

Signatures

  • Detect PurpleFox Rootkit 2 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 2 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
  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Modifies data under HKEY_USERS 4 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.a063bdf078e9c57b66e071e0e79aea1d5965b1c125774d9f1766c72deef305fa_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.a063bdf078e9c57b66e071e0e79aea1d5965b1c125774d9f1766c72deef305fa_JC.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2572
    • 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\NEASA0~1.EXE > nul
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:2996
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 2 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2592
  • C:\Windows\SysWOW64\sainbox.exe
    C:\Windows\SysWOW64\sainbox.exe -auto
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2972
    • C:\Windows\SysWOW64\sainbox.exe
      C:\Windows\SysWOW64\sainbox.exe -acsi
      2⤵
      • Drops file in Drivers directory
      • Sets service image path in registry
      • Executes dropped EXE
      • Modifies data under HKEY_USERS
      • Suspicious behavior: LoadsDriver
      • Suspicious use of AdjustPrivilegeToken
      PID:2680

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\sainbox.exe

    Filesize

    1.3MB

    MD5

    a576d36617fc88ca550823fb3ec48aa7

    SHA1

    037a62e13103fc56a1f39b5e904ef23c462f06ab

    SHA256

    a063bdf078e9c57b66e071e0e79aea1d5965b1c125774d9f1766c72deef305fa

    SHA512

    5eab68f779302a02f67cd75ed4e142fe72c9add60f9a305da90ffdcd0c75aaec649fd1a5307befdbdbd952a40b8caae67a0baa910838fda4c710b652d0caac88

  • C:\Windows\SysWOW64\sainbox.exe

    Filesize

    1.3MB

    MD5

    a576d36617fc88ca550823fb3ec48aa7

    SHA1

    037a62e13103fc56a1f39b5e904ef23c462f06ab

    SHA256

    a063bdf078e9c57b66e071e0e79aea1d5965b1c125774d9f1766c72deef305fa

    SHA512

    5eab68f779302a02f67cd75ed4e142fe72c9add60f9a305da90ffdcd0c75aaec649fd1a5307befdbdbd952a40b8caae67a0baa910838fda4c710b652d0caac88

  • C:\Windows\SysWOW64\sainbox.exe

    Filesize

    1.3MB

    MD5

    a576d36617fc88ca550823fb3ec48aa7

    SHA1

    037a62e13103fc56a1f39b5e904ef23c462f06ab

    SHA256

    a063bdf078e9c57b66e071e0e79aea1d5965b1c125774d9f1766c72deef305fa

    SHA512

    5eab68f779302a02f67cd75ed4e142fe72c9add60f9a305da90ffdcd0c75aaec649fd1a5307befdbdbd952a40b8caae67a0baa910838fda4c710b652d0caac88

  • \Windows\SysWOW64\sainbox.exe

    Filesize

    1.3MB

    MD5

    a576d36617fc88ca550823fb3ec48aa7

    SHA1

    037a62e13103fc56a1f39b5e904ef23c462f06ab

    SHA256

    a063bdf078e9c57b66e071e0e79aea1d5965b1c125774d9f1766c72deef305fa

    SHA512

    5eab68f779302a02f67cd75ed4e142fe72c9add60f9a305da90ffdcd0c75aaec649fd1a5307befdbdbd952a40b8caae67a0baa910838fda4c710b652d0caac88

  • memory/2572-0-0x0000000010000000-0x000000001019F000-memory.dmp

    Filesize

    1.6MB

  • memory/2680-18-0x0000000010000000-0x000000001019F000-memory.dmp

    Filesize

    1.6MB