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Analysis

  • max time kernel
    114s
  • max time network
    118s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2025, 14:48

General

  • Target

    181b63e57b712d3d3b0a137cde1728a23a06ceda7bebd3b7e7e83c5d7406f46a.exe

  • Size

    416KB

  • MD5

    5a07735338f03f43aa20a064f3e23fd4

  • SHA1

    024749ae320d59dc8b90b2d5d95e40d90929fcdc

  • SHA256

    181b63e57b712d3d3b0a137cde1728a23a06ceda7bebd3b7e7e83c5d7406f46a

  • SHA512

    0ec4ff12a58953e6b8e913231bfb2f8581eed7a4fa0dff29bf81eb9c5472508bc4f026293414ac50f7596799d547fb6edd6082172dbc2c87027f6b7e8b26b86b

  • SSDEEP

    6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU78:ITNYrnE3bm/CiejewY5v9

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

[email protected]:46218

178.32.224.116:46218

Mutex

4af74541-e3f1-469c-8af7-efe4071b81cf

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    178.32.224.116

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2018-07-28T12:59:38.488799236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    46218

  • default_group

    tourex

  • 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

    4af74541-e3f1-469c-8af7-efe4071b81cf

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    [email protected]

  • primary_dns_server

  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\181b63e57b712d3d3b0a137cde1728a23a06ceda7bebd3b7e7e83c5d7406f46a.exe
    "C:\Users\Admin\AppData\Local\Temp\181b63e57b712d3d3b0a137cde1728a23a06ceda7bebd3b7e7e83c5d7406f46a.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4800
    • C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
      "C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1452
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
        3⤵
        • Checks whether UAC is enabled
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:3128

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

    Filesize

    416KB

    MD5

    61e273cfc6a06b354089e1675a39aaab

    SHA1

    ba598efca7de39026b046ea96c5968a3fc15dbd7

    SHA256

    ee1bef09c5c322948ab69b57a51e11a0e4ee916d2309ef27b7e2c5e88e651976

    SHA512

    2e32a78bec04b6c72a6e3080ca9a56201a575eca80bb3f5807966a1c6946c15b2757bf3b857d4c9314e3195eac6d100b5732a66fe1e369d46498dd9874bafd8b

  • memory/1452-35-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1452-33-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1452-21-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1452-20-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/3128-29-0x0000000005760000-0x000000000576A000-memory.dmp

    Filesize

    40KB

  • memory/3128-27-0x0000000005820000-0x00000000058BC000-memory.dmp

    Filesize

    624KB

  • memory/3128-36-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/3128-31-0x0000000005C70000-0x0000000005C7A000-memory.dmp

    Filesize

    40KB

  • memory/3128-30-0x0000000005A70000-0x0000000005A8E000-memory.dmp

    Filesize

    120KB

  • memory/3128-24-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3128-22-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3128-23-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3128-26-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4800-6-0x0000000005C30000-0x0000000005C6C000-memory.dmp

    Filesize

    240KB

  • memory/4800-0-0x000000007524E000-0x000000007524F000-memory.dmp

    Filesize

    4KB

  • memory/4800-3-0x00000000050D0000-0x0000000005162000-memory.dmp

    Filesize

    584KB

  • memory/4800-5-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4800-32-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4800-2-0x0000000005680000-0x0000000005C24000-memory.dmp

    Filesize

    5.6MB

  • memory/4800-1-0x0000000000600000-0x000000000066E000-memory.dmp

    Filesize

    440KB

  • memory/4800-4-0x0000000005060000-0x000000000506A000-memory.dmp

    Filesize

    40KB