Analysis

  • max time kernel
    128s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    19-09-2022 08:21

General

  • Target

    9c44d904890df75e5f1b7c3c3ba0b7db.exe

  • Size

    486KB

  • MD5

    9c44d904890df75e5f1b7c3c3ba0b7db

  • SHA1

    2aea8311e7e1178396d5308d3853b6dc0334f849

  • SHA256

    e7763c3bb26ac869ce31f856dbd583c7b64979afcadbbcff4618c7d42c1feb6d

  • SHA512

    bcf9af878879865941d85934df601fb00afc59d8bf2191b609c8d11ccf2205d100aea80c74118783e3e5f19b893a9c3dd2aff4db2792c3205645662661f69788

  • SSDEEP

    12288:XnJYudWsonlmuKAJmK83qCz2B3aTO1EKoDIAzOZ:XJB3AmkmxSBIOZ

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

95.70.139.81:54984

Mutex

2afd92d3-82ee-48f4-9de3-98029fbb1ca4

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    95.70.139.81

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-07-01T08:20:47.457547136Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    54984

  • default_group

    Default

  • 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

    2afd92d3-82ee-48f4-9de3-98029fbb1ca4

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    95.70.139.81

  • primary_dns_server

    8.8.8.8

  • request_elevation

    false

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    false

  • 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 3 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9c44d904890df75e5f1b7c3c3ba0b7db.exe
    "C:\Users\Admin\AppData\Local\Temp\9c44d904890df75e5f1b7c3c3ba0b7db.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1604
    • C:\Users\Admin\AppData\Local\Temp\9c44d904890df75e5f1b7c3c3ba0b7db.exe
      "C:\Users\Admin\AppData\Local\Temp\9c44d904890df75e5f1b7c3c3ba0b7db.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:1820

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1604-54-0x00000000009F0000-0x0000000000A70000-memory.dmp

    Filesize

    512KB

  • memory/1604-55-0x0000000076461000-0x0000000076463000-memory.dmp

    Filesize

    8KB

  • memory/1604-56-0x0000000000390000-0x00000000003A0000-memory.dmp

    Filesize

    64KB

  • memory/1820-57-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1820-58-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1820-60-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1820-61-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1820-63-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1820-64-0x000000000041E792-mapping.dmp

  • memory/1820-66-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1820-68-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1820-70-0x00000000004E0000-0x00000000004EA000-memory.dmp

    Filesize

    40KB

  • memory/1820-71-0x00000000004F0000-0x000000000050E000-memory.dmp

    Filesize

    120KB

  • memory/1820-72-0x0000000000610000-0x000000000061A000-memory.dmp

    Filesize

    40KB