Analysis

  • max time kernel
    4294180s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20220310-en
  • submitted
    21/03/2022, 09:17

General

  • Target
    payment-00789.exe
  • Size 1.0MB
  • Sample220321-k848esbbbr
  • SHA256 b771e6a9cb56600b3cb46440bd7af362598c9904350163754898505d35cff4ad
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • papakamzy.ddns.net:7600

  • 37.0.11.164:7600

Mutex
  • ac6a884e-62fc-40ea-8806-2477faf478a1

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    37.0.11.164

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-12-26T23:16:16.178333136Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    7600

  • default_group

    37.0.11.164

  • 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

    ac6a884e-62fc-40ea-8806-2477faf478a1

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    papakamzy.ddns.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • 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.

  • suricata: ET MALWARE Possible NanoCore C2 60B

    suricata: ET MALWARE Possible NanoCore C2 60B

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\payment-00789.exe
    "C:\Users\Admin\AppData\Local\Temp\payment-00789.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1268
    • C:\Users\Admin\AppData\Local\Temp\payment-00789.exe
      "C:\Users\Admin\AppData\Local\Temp\payment-00789.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1932

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1268-54-0x0000000074D60000-0x000000007544E000-memory.dmp

        memory/1268-55-0x0000000000D90000-0x0000000000E9E000-memory.dmp

        memory/1268-56-0x00000000050E0000-0x00000000050E1000-memory.dmp

        memory/1268-57-0x00000000003C0000-0x00000000003D8000-memory.dmp

        memory/1268-58-0x0000000005890000-0x0000000005992000-memory.dmp

        memory/1268-59-0x0000000004B50000-0x0000000004B8A000-memory.dmp

        memory/1932-60-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1932-62-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1932-64-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1932-66-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1932-68-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1932-70-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1932-72-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1932-74-0x0000000004DB0000-0x0000000004DB1000-memory.dmp

        memory/1932-73-0x0000000074D60000-0x000000007544E000-memory.dmp

        memory/1932-75-0x0000000000250000-0x000000000025A000-memory.dmp

        memory/1932-76-0x0000000000570000-0x000000000058E000-memory.dmp

        memory/1932-77-0x0000000000360000-0x000000000036A000-memory.dmp

        memory/1932-78-0x0000000000610000-0x0000000000622000-memory.dmp

        memory/1932-79-0x0000000000B10000-0x0000000000B2A000-memory.dmp

        memory/1932-80-0x0000000000BB0000-0x0000000000BBE000-memory.dmp

        memory/1932-81-0x0000000000CF0000-0x0000000000D02000-memory.dmp

        memory/1932-82-0x0000000000D00000-0x0000000000D0C000-memory.dmp

        memory/1932-83-0x0000000000D10000-0x0000000000D1E000-memory.dmp

        memory/1932-84-0x0000000000D20000-0x0000000000D34000-memory.dmp

        memory/1932-85-0x0000000000D70000-0x0000000000D80000-memory.dmp

        memory/1932-86-0x0000000000D80000-0x0000000000D94000-memory.dmp

        memory/1932-87-0x00000000022A0000-0x00000000022AE000-memory.dmp

        memory/1932-88-0x0000000004450000-0x000000000447E000-memory.dmp

        memory/1932-89-0x0000000002400000-0x0000000002414000-memory.dmp