Analysis

  • max time kernel
    117s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    22/10/2021, 10:51

General

  • Target
    Conform descrierii traducereProfil liniar355377.exe
  • Size 300KB
  • Sample211022-mxtnnacdbq
  • SHA256 abca0434af61ccbf707f5ea013f0c5f582106c9701552eeba5e64d678401dfd2
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • 178.170.138.163:5626

Mutex
  • 01f9d977-6605-495e-941a-753d3cd6dc0b

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-02-27T13:54:38.807349736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    5626

  • default_group

    4Maticross.

  • 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

    01f9d977-6605-495e-941a-753d3cd6dc0b

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    178.170.138.163

  • 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.

  • Loads dropped DLL 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Conform descrierii traducereProfil liniar355377.exe
    "C:\Users\Admin\AppData\Local\Temp\Conform descrierii traducereProfil liniar355377.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3484
    • C:\Users\Admin\AppData\Local\Temp\Conform descrierii traducereProfil liniar355377.exe
      "C:\Users\Admin\AppData\Local\Temp\Conform descrierii traducereProfil liniar355377.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:800

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/800-116-0x0000000000400000-0x0000000000448000-memory.dmp

        memory/800-118-0x0000000000400000-0x0000000000448000-memory.dmp

        memory/800-120-0x0000000000A61000-0x0000000000A62000-memory.dmp

        memory/800-119-0x0000000000A60000-0x0000000000A61000-memory.dmp

        memory/800-121-0x0000000000A62000-0x0000000000A64000-memory.dmp

        memory/800-123-0x0000000000A68000-0x0000000000A69000-memory.dmp

        memory/800-122-0x0000000000A67000-0x0000000000A68000-memory.dmp