Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    26/11/2022, 23:15

General

  • Target

    534e8c82674ceb71cc3fb0da8e2757a2b04f77ff5369c788a64d3cb7e312e46e.exe

  • Size

    412KB

  • MD5

    467825b6787ae93fcec1c54f8fd1482e

  • SHA1

    d0962769f0938a58e64f86bd6cce69cd564d196c

  • SHA256

    534e8c82674ceb71cc3fb0da8e2757a2b04f77ff5369c788a64d3cb7e312e46e

  • SHA512

    4ba6962635c1cdd2620443b5bfe4ff2d58eb276da15415f736c3d9b320f83cbc425f0353f459ac62c51e71de56607cb6f61cde213ffb21cf8099c7925424b68c

  • SSDEEP

    6144:E0O0wvlRwnGxNVXYwEf54diLdcPBO6ElKfn4acZ5DkRSeBkRqj5Mn9b9CPTza:E0ClRXxNVI7fLso6OKfRf/BRAxCPT

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

connectbackto.twilightparadox.com:9033

Mutex

81abc3b4-7fe1-4c88-9b68-601318208b18

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2015-03-04T03:03:27.439708036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    9033

  • default_group

    Micheal

  • 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

    81abc3b4-7fe1-4c88-9b68-601318208b18

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    connectbackto.twilightparadox.com

  • 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.

  • 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 2 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\534e8c82674ceb71cc3fb0da8e2757a2b04f77ff5369c788a64d3cb7e312e46e.exe
    "C:\Users\Admin\AppData\Local\Temp\534e8c82674ceb71cc3fb0da8e2757a2b04f77ff5369c788a64d3cb7e312e46e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1724
    • C:\Users\Admin\AppData\Local\Temp\534e8c82674ceb71cc3fb0da8e2757a2b04f77ff5369c788a64d3cb7e312e46e.exe
      "C:\Users\Admin\AppData\Local\Temp\534e8c82674ceb71cc3fb0da8e2757a2b04f77ff5369c788a64d3cb7e312e46e.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:2028

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1724-63-0x0000000002156000-0x0000000002167000-memory.dmp

          Filesize

          68KB

        • memory/1724-55-0x00000000742A0000-0x000000007484B000-memory.dmp

          Filesize

          5.7MB

        • memory/1724-74-0x0000000002156000-0x0000000002167000-memory.dmp

          Filesize

          68KB

        • memory/1724-54-0x0000000074B51000-0x0000000074B53000-memory.dmp

          Filesize

          8KB

        • memory/1724-73-0x00000000742A0000-0x000000007484B000-memory.dmp

          Filesize

          5.7MB

        • memory/2028-57-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2028-61-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2028-65-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2028-69-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2028-71-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2028-59-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2028-56-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2028-75-0x00000000742A0000-0x000000007484B000-memory.dmp

          Filesize

          5.7MB

        • memory/2028-76-0x00000000742A0000-0x000000007484B000-memory.dmp

          Filesize

          5.7MB