Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-12-2024 19:40

General

  • Target

    0bd78b73f8a312840d44e243ee051e03fa33fe0225398285a6082e606892a7f6.exe

  • Size

    1.0MB

  • MD5

    acb969ed1fcf25a0a864d098bee4d4f6

  • SHA1

    f6ea626707ca2ff81555d5a862711955937d3356

  • SHA256

    0bd78b73f8a312840d44e243ee051e03fa33fe0225398285a6082e606892a7f6

  • SHA512

    51f1910607788e9b18cdc8a77d3cfb053155455dd31e157b8809cee90391e1b23e8c236b5960b45240f4bc63ed1d692df12c4cd62980d66eb2982d6fbad0bcc6

  • SSDEEP

    24576:Jur9gkEPGcHHXYDYDa6naGhywpCjq7jUv7cF6kZ6YriDfZ49p50/Y:Ur9gNGKXYD+naGEsBXUv66k8o4yp5wY

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

testwork.kozow.com:8906

Mutex

bd6fc7b5-d48b-4e23-98f7-784bd3ef305c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    testwork.kozow.com

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2019-02-16T16:47:25.218235636Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8906

  • default_group

    star

  • 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

    bd6fc7b5-d48b-4e23-98f7-784bd3ef305c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    testwork.kozow.com

  • 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.

  • Nanocore family
  • Drops startup file 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • AutoIT Executable 15 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 16 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0bd78b73f8a312840d44e243ee051e03fa33fe0225398285a6082e606892a7f6.exe
    "C:\Users\Admin\AppData\Local\Temp\0bd78b73f8a312840d44e243ee051e03fa33fe0225398285a6082e606892a7f6.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3192
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
      2⤵
      • Checks whether UAC is enabled
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2000-19-0x00000000736D2000-0x00000000736D3000-memory.dmp

    Filesize

    4KB

  • memory/2000-21-0x00000000736D0000-0x0000000073C81000-memory.dmp

    Filesize

    5.7MB

  • memory/2000-7-0x0000000000630000-0x0000000000668000-memory.dmp

    Filesize

    224KB

  • memory/2000-12-0x00000000736D2000-0x00000000736D3000-memory.dmp

    Filesize

    4KB

  • memory/2000-13-0x00000000736D0000-0x0000000073C81000-memory.dmp

    Filesize

    5.7MB

  • memory/2000-20-0x00000000736D0000-0x0000000073C81000-memory.dmp

    Filesize

    5.7MB

  • memory/2000-15-0x00000000736D0000-0x0000000073C81000-memory.dmp

    Filesize

    5.7MB

  • memory/3192-22-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-26-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-17-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-14-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-6-0x0000000004450000-0x0000000004451000-memory.dmp

    Filesize

    4KB

  • memory/3192-0-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-23-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-24-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-25-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-18-0x0000000004450000-0x0000000004451000-memory.dmp

    Filesize

    4KB

  • memory/3192-27-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-28-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-29-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-30-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-31-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-32-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-33-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB

  • memory/3192-34-0x0000000000080000-0x0000000000231000-memory.dmp

    Filesize

    1.7MB