Analysis

  • max time kernel
    54s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    29/12/2020, 08:02

General

  • Target
    DHL_file 187652345643476245.exe
  • Size 940KB
  • Sample201229-wvwne9fvmx
  • SHA256 9dfd2b3aa2ccb2b72b53066d56ad77605c7e505cf69d6d886d58db67afc9b21a
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • 185.157.160.233:54984

  • annapro.linkpc.net:54984

Mutex
  • 0180f08c-0610-45ef-b82b-ad3da2122748

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    annapro.linkpc.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-10-02T06:05:41.370201336Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    54984

  • default_group

    More Blessings

  • 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

    0180f08c-0610-45ef-b82b-ad3da2122748

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    185.157.160.233

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • 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 10 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\DHL_file 187652345643476245.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL_file 187652345643476245.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4632
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yoLnNjAZlKmpa" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4152
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:4068

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/4068-30-0x0000000006190000-0x0000000006196000-memory.dmp

        memory/4068-29-0x0000000006180000-0x0000000006187000-memory.dmp

        memory/4068-37-0x0000000006410000-0x0000000006411000-memory.dmp

        memory/4068-36-0x0000000006230000-0x000000000623F000-memory.dmp

        memory/4068-24-0x0000000005090000-0x0000000005093000-memory.dmp

        memory/4068-35-0x00000000061F0000-0x0000000006219000-memory.dmp

        memory/4068-34-0x00000000061E0000-0x00000000061EA000-memory.dmp

        memory/4068-23-0x0000000004E40000-0x0000000004E59000-memory.dmp

        memory/4068-32-0x00000000061B0000-0x00000000061B9000-memory.dmp

        memory/4068-13-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/4068-15-0x0000000073D60000-0x000000007444E000-memory.dmp

        memory/4068-31-0x00000000061A0000-0x00000000061AD000-memory.dmp

        memory/4068-33-0x00000000061C0000-0x00000000061CF000-memory.dmp

        memory/4068-22-0x0000000004E30000-0x0000000004E35000-memory.dmp

        memory/4068-25-0x00000000050C0000-0x00000000050CD000-memory.dmp

        memory/4068-26-0x0000000005160000-0x0000000005175000-memory.dmp

        memory/4068-27-0x0000000006150000-0x0000000006156000-memory.dmp

        memory/4068-28-0x0000000006170000-0x000000000617C000-memory.dmp

        memory/4632-8-0x000000000A3D0000-0x000000000A3D1000-memory.dmp

        memory/4632-2-0x0000000073D60000-0x000000007444E000-memory.dmp

        memory/4632-5-0x0000000007E20000-0x0000000007E21000-memory.dmp

        memory/4632-3-0x0000000000890000-0x0000000000891000-memory.dmp

        memory/4632-10-0x0000000002AE0000-0x0000000002B48000-memory.dmp

        memory/4632-9-0x000000000A330000-0x000000000A334000-memory.dmp

        memory/4632-7-0x0000000007B10000-0x0000000007B11000-memory.dmp

        memory/4632-6-0x0000000007B40000-0x0000000007B41000-memory.dmp