Analysis

  • max time kernel
    141s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 01:37

General

  • Target

    Order.exe

  • Size

    373KB

  • MD5

    77dcd9d7e5f3849d177ec4bf54e8be1d

  • SHA1

    ab9579e68dbce78f60833665ee2ece5c737a8c4d

  • SHA256

    c43d85dc319a3e0e9faeb9aa8967ab597ce9c7d76d78ad5d7cea309b73a7b653

  • SHA512

    d5ac72a5c709d06aa72c9bed9b690555e6e8f6c7395bbda994ab43cb0eb0a086013b23e585d6d17acaed21250b5bd73465da537aa5b17bddea99c8fd83d24743

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.19.85.133:9995

127.0.0.1:9995

Mutex

eb071d45-47d5-4ca7-a489-0f12cddc481f

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-01-07T00:46:43.694111036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    9995

  • default_group

    BLESSED

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    eb071d45-47d5-4ca7-a489-0f12cddc481f

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    185.19.85.133

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Order.exe
    "C:\Users\Admin\AppData\Local\Temp\Order.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4760
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OoAKpqm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB0E6.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4604
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1820

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpB0E6.tmp
    Filesize

    1KB

    MD5

    7e026dd945135b46ee68d5ee7ba1a96b

    SHA1

    0ebc969af33acba7f9e12b3fba01d881c4de0a7f

    SHA256

    a00b17bf73246256302cb55b214c6a44c16ef442b38fdbe57f15fd81066c3979

    SHA512

    f0f57a9b8e31d15aa65b914c2644823c378ff8ef528c4a642986f8b61f7d4820fff2174811dc854a7a9ed7a16180eb6d0b8f4f5a9233a5a99be5a68519b80370

  • memory/1820-133-0x0000000000000000-mapping.dmp
  • memory/1820-134-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1820-135-0x0000000074F90000-0x0000000075541000-memory.dmp
    Filesize

    5.7MB

  • memory/4604-131-0x0000000000000000-mapping.dmp
  • memory/4760-130-0x0000000074F90000-0x0000000075541000-memory.dmp
    Filesize

    5.7MB