Analysis

  • max time kernel
    90s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-09-2022 08:52

General

  • Target

    Confidential.exe

  • Size

    727KB

  • MD5

    77d64026e7224a2243bcb023766111e6

  • SHA1

    0124b3fc954340b6857c96b37e89e9eca64da43a

  • SHA256

    b002c64f7d0ff0a952b72f31609e683f17bb23313417f6639afdec47d9187b25

  • SHA512

    aa233f2db25af667574de2de6870cd6aa259b62700f604bf0478dac442a358a143853c8b8ad0c913f91b3b3e05662a3c9a7216cd1ca051fd0c20e5fbba40a0b8

  • SSDEEP

    12288:voxpAdRDmK6S8IB++Ll22jqZEp5E3qjJ5nl0+9MK:Z56SRB++LVMy1jrZe

Malware Config

Extracted

Family

netwire

C2

104.222.188.99:3360

zonedx.ddns.net:3360

zonedx.ddns.net:3363

104.222.188.99:3363

Attributes
  • activex_autorun

    false

  • copy_executable

    false

  • delete_original

    false

  • host_id

    HostId-%Rand%

  • keylogger_dir

    %AppData%\Logs\

  • lock_executable

    false

  • offline_keylogger

    true

  • password

    Password9090

  • registry_autorun

    false

  • use_mutex

    false

Signatures

  • NetWire RAT payload 3 IoCs
  • Netwire

    Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Confidential.exe
    "C:\Users\Admin\AppData\Local\Temp\Confidential.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3424
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HQbzNKKSw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD4F8.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3656
    • C:\Users\Admin\AppData\Local\Temp\Confidential.exe
      "{path}"
      2⤵
        PID:240
      • C:\Users\Admin\AppData\Local\Temp\Confidential.exe
        "{path}"
        2⤵
          PID:32

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmpD4F8.tmp

        Filesize

        1KB

        MD5

        50d02e6d46e912ce8ae6a5ed3e6b0cfb

        SHA1

        5b41d4a86b358e055b15e36c5b3060e2e02afc7a

        SHA256

        355f4c6f8c11b4ba0f2b6e482536151e2f946b110f6aa47d6eac21a43e3af3ff

        SHA512

        b11a1bae7ec3ad5769d71c4216f3c4e6b638d6df0c9fe34451980bd1855f5b6644a214909d24e3dc696c2eb4de7b3caa3e0a60b6cfc2f79f7f07a50aaf8d90ad

      • memory/32-145-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/32-144-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/32-142-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/32-141-0x0000000000000000-mapping.dmp

      • memory/240-140-0x0000000000000000-mapping.dmp

      • memory/3424-135-0x0000000005340000-0x00000000053DC000-memory.dmp

        Filesize

        624KB

      • memory/3424-137-0x000000000D160000-0x000000000D1C6000-memory.dmp

        Filesize

        408KB

      • memory/3424-136-0x0000000005280000-0x000000000528A000-memory.dmp

        Filesize

        40KB

      • memory/3424-132-0x0000000000840000-0x00000000008FC000-memory.dmp

        Filesize

        752KB

      • memory/3424-134-0x00000000052A0000-0x0000000005332000-memory.dmp

        Filesize

        584KB

      • memory/3424-133-0x00000000059A0000-0x0000000005F44000-memory.dmp

        Filesize

        5.6MB

      • memory/3656-138-0x0000000000000000-mapping.dmp