Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2024, 07:02

General

  • Target

    79949bbec90a663289312a4bcb043aeb.exe

  • Size

    420KB

  • MD5

    79949bbec90a663289312a4bcb043aeb

  • SHA1

    14b39b97dd2564d2bee5bdbb166552a5e15b8c1f

  • SHA256

    0b0818a3e82b1653a0160daedf39b18f4dd2a1b41661928451e5a26c4b6392a7

  • SHA512

    09ffa62f1af6bb6f0bb00fc9da3c6e59abaabc9c1e461a8dd3391d205ad3f0d3d4fa18e063230fdfefe4ddb105adbe8a5795d05d1414cf142cc80669c0628f1c

  • SSDEEP

    12288:gOOOYs0vs0vs0vs0B53OZjoI0/XJ2dGPDi0sMUEzSxFEqW:Gs0vs0vs0vs0X80PJPP

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

grene231.ddns.net:9017

Mutex

050c3e25-856b-443b-ae6e-44a1fa0b6039

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    grene231.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2018-12-09T09:11:12.426017136Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    9017

  • default_group

    Vala

  • 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

    050c3e25-856b-443b-ae6e-44a1fa0b6039

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    grene231.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.

  • 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 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
    "C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1960
    • C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
      "C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.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:2544

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\79949bbec90a663289312a4bcb043aeb.exe.log

    Filesize

    706B

    MD5

    a6b67088efc040365b2447fdcda1e0fd

    SHA1

    ecbb5a3354bedfb924c498e5d852c5831a5b22f7

    SHA256

    a2c0432a8caeb10a8cd8634ceee0bc4b53d75a02e8e463a01bf97a4e25b46a55

    SHA512

    cb83069882d727e7733945d1593e87f34869fc5397d01d17d3022c4777a37322d9d94ecdfaeca863a01dec89aaaaeaf7dd997e17a97ba4ffdacf64d31021c156

  • memory/1960-4-0x0000000005BA0000-0x0000000005C3C000-memory.dmp

    Filesize

    624KB

  • memory/1960-12-0x0000000074BE0000-0x0000000075390000-memory.dmp

    Filesize

    7.7MB

  • memory/1960-3-0x0000000005830000-0x0000000005840000-memory.dmp

    Filesize

    64KB

  • memory/1960-1-0x0000000074BE0000-0x0000000075390000-memory.dmp

    Filesize

    7.7MB

  • memory/1960-5-0x0000000005A90000-0x0000000005A98000-memory.dmp

    Filesize

    32KB

  • memory/1960-6-0x00000000061F0000-0x0000000006794000-memory.dmp

    Filesize

    5.6MB

  • memory/1960-0-0x0000000000E10000-0x0000000000E80000-memory.dmp

    Filesize

    448KB

  • memory/1960-2-0x00000000058A0000-0x0000000005932000-memory.dmp

    Filesize

    584KB

  • memory/2544-7-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2544-14-0x0000000005250000-0x0000000005260000-memory.dmp

    Filesize

    64KB

  • memory/2544-13-0x0000000074BE0000-0x0000000075390000-memory.dmp

    Filesize

    7.7MB

  • memory/2544-15-0x00000000052A0000-0x00000000052AA000-memory.dmp

    Filesize

    40KB

  • memory/2544-18-0x0000000005530000-0x000000000553A000-memory.dmp

    Filesize

    40KB

  • memory/2544-19-0x0000000005900000-0x000000000591E000-memory.dmp

    Filesize

    120KB

  • memory/2544-20-0x0000000006160000-0x000000000616A000-memory.dmp

    Filesize

    40KB

  • memory/2544-21-0x0000000074BE0000-0x0000000075390000-memory.dmp

    Filesize

    7.7MB

  • memory/2544-22-0x0000000005250000-0x0000000005260000-memory.dmp

    Filesize

    64KB