Analysis

  • max time kernel
    149s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    06-08-2024 19:43

General

  • Target

    2468d8c314e35346873e34e7e7301de5c8d60a01602803a5f6af95e058b34274.exe

  • Size

    281KB

  • MD5

    6519f56f87de8e1435b20e8a4bbab234

  • SHA1

    256c83d653f0e8609daf9c4e494c239fd3aa7b08

  • SHA256

    2468d8c314e35346873e34e7e7301de5c8d60a01602803a5f6af95e058b34274

  • SHA512

    fc6c829bef11b874a29bc5c5ec0fec485628027c387f94e554fbbe56da75be748dd47d64417a4e6bd24ad45fd304340b85558420dad726ed144d7ea93ffc70dd

  • SSDEEP

    6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkft:boSeGUA5YZazpXUmZhZ6Sw

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\2468d8c314e35346873e34e7e7301de5c8d60a01602803a5f6af95e058b34274.exe
    "C:\Users\Admin\AppData\Local\Temp\2468d8c314e35346873e34e7e7301de5c8d60a01602803a5f6af95e058b34274.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2480
    • 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:2164
      • 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:3040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    281KB

    MD5

    751c1e0af02df648065dc3c0668b3b4a

    SHA1

    5fd8f3f15eb7b14073c72b9be15f89253f37c911

    SHA256

    046fb8a94a0caa8c6082caadbb0b99aebd94267d9606661a94f22497e04952c9

    SHA512

    e60d48dfb51bea82e7d3c692be54c5635d76ab70f38d9679b60eb08af168b9e0757928d8c1b9938408aaae42511296383c4bb18e6024088776e90487cfc4cfd8

  • memory/2164-38-0x0000000074AF0000-0x000000007509B000-memory.dmp

    Filesize

    5.7MB

  • memory/2164-13-0x0000000074AF0000-0x000000007509B000-memory.dmp

    Filesize

    5.7MB

  • memory/2164-16-0x0000000074AF0000-0x000000007509B000-memory.dmp

    Filesize

    5.7MB

  • memory/2164-15-0x0000000074AF0000-0x000000007509B000-memory.dmp

    Filesize

    5.7MB

  • memory/2164-14-0x0000000074AF0000-0x000000007509B000-memory.dmp

    Filesize

    5.7MB

  • memory/2164-39-0x0000000074AF0000-0x000000007509B000-memory.dmp

    Filesize

    5.7MB

  • memory/2480-1-0x0000000074AF0000-0x000000007509B000-memory.dmp

    Filesize

    5.7MB

  • memory/2480-2-0x0000000074AF0000-0x000000007509B000-memory.dmp

    Filesize

    5.7MB

  • memory/2480-3-0x0000000074AF0000-0x000000007509B000-memory.dmp

    Filesize

    5.7MB

  • memory/2480-12-0x0000000074AF0000-0x000000007509B000-memory.dmp

    Filesize

    5.7MB

  • memory/2480-0-0x0000000074AF1000-0x0000000074AF2000-memory.dmp

    Filesize

    4KB

  • memory/3040-36-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3040-28-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3040-25-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3040-22-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3040-20-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3040-18-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3040-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3040-34-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB