Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    16-02-2025 13:17

General

  • Target

    c9d60c6051caa86a944c7da3a43756df78c75ef19fc6f63a2bbc70f8e9154abb.exe

  • Size

    1.0MB

  • MD5

    7890eb873db9fa0abb6617cf541f3559

  • SHA1

    88da14204849e3fc64c3f9c0213bb3903dbede55

  • SHA256

    c9d60c6051caa86a944c7da3a43756df78c75ef19fc6f63a2bbc70f8e9154abb

  • SHA512

    6af58024b64bf1efe0b42f17404de513787dac79f82d5ef0c101dead673ba2e2d69f5003995854ef88215385447c4085c8a828cccb1306dda7460f730fcc7466

  • SSDEEP

    24576:Jur9gkEPGcHHXYDYDa6naGhywpCjq7jUv7cF6kZ6YriDfZ49p50/j:Ur9gNGKXYD+naGEsBXUv66k8o4yp5wj

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 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c9d60c6051caa86a944c7da3a43756df78c75ef19fc6f63a2bbc70f8e9154abb.exe
    "C:\Users\Admin\AppData\Local\Temp\c9d60c6051caa86a944c7da3a43756df78c75ef19fc6f63a2bbc70f8e9154abb.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:2220
    • 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:2544

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2220-29-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-30-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-23-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-35-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-24-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-34-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-33-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-25-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-19-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-20-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-21-0x0000000000420000-0x0000000000421000-memory.dmp

    Filesize

    4KB

  • memory/2220-32-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-31-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-6-0x0000000000420000-0x0000000000421000-memory.dmp

    Filesize

    4KB

  • memory/2220-0-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-26-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-27-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2220-28-0x0000000000010000-0x00000000001C1000-memory.dmp

    Filesize

    1.7MB

  • memory/2544-17-0x00000000749E2000-0x00000000749E4000-memory.dmp

    Filesize

    8KB

  • memory/2544-16-0x0000000000090000-0x00000000000C8000-memory.dmp

    Filesize

    224KB

  • memory/2544-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2544-22-0x00000000749E2000-0x00000000749E4000-memory.dmp

    Filesize

    8KB

  • memory/2544-7-0x0000000000090000-0x00000000000C8000-memory.dmp

    Filesize

    224KB

  • memory/2544-15-0x0000000000090000-0x00000000000C8000-memory.dmp

    Filesize

    224KB

  • memory/2544-9-0x0000000000090000-0x00000000000C8000-memory.dmp

    Filesize

    224KB