Analysis

  • max time kernel
    150s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-09-2024 07:08

General

  • Target

    b7b27bb86a167784e1b3b63ecc9402cfc6861bb913f18125b65bb0d9e0d5cab4.dll

  • Size

    437KB

  • MD5

    9d080dee1132246ce6c974eaa14f3adf

  • SHA1

    4ddfb415820fdf1725e9ab7d46965ec9c80d7345

  • SHA256

    b7b27bb86a167784e1b3b63ecc9402cfc6861bb913f18125b65bb0d9e0d5cab4

  • SHA512

    be2de09862e9a4f83bb746fd616e20d22a2004fecc56b81e5e9fd01d32c4ea777c55695f82633ac532d9a43408813c8c9276bf6135c73bee55864ae47bc874a0

  • SSDEEP

    6144:bas0ZLc/IJvCklIqA8mvHwgnHJp9OWqw7zsK0bencTpX4KtjY5Jt/lt0zwzOu6Wi:gBFJqk2q1g5ppemr0bAKoNfnQCSWpoS4

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.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 2 IoCs
  • UPX packed file 7 IoCs

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

  • Enumerates connected drives 3 TTPs 44 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:616
      • C:\Windows\SysWOW64\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted
        2⤵
        • Enumerates connected drives
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4764
      • C:\Windows\SysWOW64\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted
        2⤵
        • Enumerates connected drives
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4852
    • C:\Windows\system32\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7b27bb86a167784e1b3b63ecc9402cfc6861bb913f18125b65bb0d9e0d5cab4.dll,#1
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:3512
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7b27bb86a167784e1b3b63ecc9402cfc6861bb913f18125b65bb0d9e0d5cab4.dll,#1
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3440

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3440-0-0x0000000010000000-0x00000000100A6000-memory.dmp

      Filesize

      664KB

    • memory/4764-2-0x0000000000400000-0x0000000000543000-memory.dmp

      Filesize

      1.3MB

    • memory/4764-8-0x0000000000400000-0x0000000000543000-memory.dmp

      Filesize

      1.3MB

    • memory/4764-7-0x0000000000400000-0x0000000000543000-memory.dmp

      Filesize

      1.3MB

    • memory/4764-11-0x0000000075F83000-0x0000000075F84000-memory.dmp

      Filesize

      4KB

    • memory/4764-9-0x0000000000400000-0x0000000000543000-memory.dmp

      Filesize

      1.3MB

    • memory/4764-3-0x0000000000400000-0x0000000000543000-memory.dmp

      Filesize

      1.3MB

    • memory/4764-1-0x0000000000400000-0x0000000000543000-memory.dmp

      Filesize

      1.3MB

    • memory/4764-22-0x0000000010000000-0x00000000101A0000-memory.dmp

      Filesize

      1.6MB

    • memory/4852-21-0x0000000075F60000-0x0000000076050000-memory.dmp

      Filesize

      960KB

    • memory/4852-25-0x0000000010000000-0x00000000101A0000-memory.dmp

      Filesize

      1.6MB

    • memory/4852-54-0x0000000075F60000-0x0000000076050000-memory.dmp

      Filesize

      960KB