Analysis

  • max time kernel
    117s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    13-08-2024 00:44

General

  • Target

    0d47828b888817ccc0b40056b40211e0N.exe

  • Size

    281KB

  • MD5

    0d47828b888817ccc0b40056b40211e0

  • SHA1

    d8972a78e2593118b123aa162d5ceec313f3f47e

  • SHA256

    bd5cd250cd8e3bb4b497cc273411ca4efa1b366e27d956be38be62881f2758b2

  • SHA512

    60638944eacdaccb577335636d4774e6cd143a68b484e825627901a8828cb8a15a1bd8d08c8bdbbec0d0718f640f10f4817da3c4ad28c44be105639a2013cc7a

  • SSDEEP

    6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfn:boSeGUA5YZazpXUmZhZ6SC

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sysupdate24.ddns.net:45400

Mutex

ae82ab7f-db07-49ee-9d2b-76075d76f37f

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2020-04-24T17:41:53.492468936Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    45400

  • 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

    ae82ab7f-db07-49ee-9d2b-76075d76f37f

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    sysupdate24.ddns.net

  • 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.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 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 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0d47828b888817ccc0b40056b40211e0N.exe
    "C:\Users\Admin\AppData\Local\Temp\0d47828b888817ccc0b40056b40211e0N.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2224
    • C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
      "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2908
      • C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
        "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
        3⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:2664

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

    Filesize

    281KB

    MD5

    e8519238e16e8a5e76edbaddd511cb36

    SHA1

    fdf86ab0123245192bbf96ea732b0c2526445925

    SHA256

    bde33c354b895773feda99175fa0d92f4c05c208012e7c2e2b3edf358fe30788

    SHA512

    6b6d39662329035aa311f21443fae6dd282f08667db5b1d7f2395ab6da31b3cc860bb12d42aa8381bf242c5caf829ed70b81f7e70c4ee265546b6c90619ff69f

  • memory/2224-0-0x00000000740C1000-0x00000000740C2000-memory.dmp

    Filesize

    4KB

  • memory/2224-1-0x00000000740C0000-0x000000007466B000-memory.dmp

    Filesize

    5.7MB

  • memory/2224-2-0x00000000740C0000-0x000000007466B000-memory.dmp

    Filesize

    5.7MB

  • memory/2224-3-0x00000000740C0000-0x000000007466B000-memory.dmp

    Filesize

    5.7MB

  • memory/2224-12-0x00000000740C0000-0x000000007466B000-memory.dmp

    Filesize

    5.7MB

  • memory/2664-18-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2664-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2664-25-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2664-31-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2664-32-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2664-23-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2664-20-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2664-19-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2908-13-0x00000000740C0000-0x000000007466B000-memory.dmp

    Filesize

    5.7MB

  • memory/2908-15-0x00000000740C0000-0x000000007466B000-memory.dmp

    Filesize

    5.7MB

  • memory/2908-14-0x00000000740C0000-0x000000007466B000-memory.dmp

    Filesize

    5.7MB

  • memory/2908-16-0x00000000740C0000-0x000000007466B000-memory.dmp

    Filesize

    5.7MB

  • memory/2908-34-0x00000000740C0000-0x000000007466B000-memory.dmp

    Filesize

    5.7MB

  • memory/2908-35-0x00000000740C0000-0x000000007466B000-memory.dmp

    Filesize

    5.7MB