Analysis

  • max time kernel
    176s
  • max time network
    189s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2022, 21:13

General

  • Target

    ee3594cc88a44e60adc7c5ed81ae95732a93e0a31ad0490ae5b3548ebaae8d82.exe

  • Size

    1.0MB

  • MD5

    4cd314d065752bc863a44ac409691560

  • SHA1

    66d0fe99f3d70181970207ee5c77a90a735b5cda

  • SHA256

    ee3594cc88a44e60adc7c5ed81ae95732a93e0a31ad0490ae5b3548ebaae8d82

  • SHA512

    47689aed4323b64e8422c9ff31d537265a3fc5ba9c25619bbafa6191bb58f1bb877a4df17755074b7fe6d4c8c485d52bf7fc5d1f7864fe45973f03f24c829504

  • SSDEEP

    24576:7tb20pkaCqT5TBWgNQ7agvu3QS8Vhx9V6A:4Vg5tQ7agvOQSgp5

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

adam150994.mooo.com:666

127.0.0.1:666

Mutex

3f5b9758-4849-4f30-aba2-77bb2368243b

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2015-01-10T20:36:58.967694336Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    666

  • 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

    3f5b9758-4849-4f30-aba2-77bb2368243b

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    adam150994.mooo.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.

  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ee3594cc88a44e60adc7c5ed81ae95732a93e0a31ad0490ae5b3548ebaae8d82.exe
    "C:\Users\Admin\AppData\Local\Temp\ee3594cc88a44e60adc7c5ed81ae95732a93e0a31ad0490ae5b3548ebaae8d82.exe"
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4840
    • C:\Users\Admin\AppData\Local\Temp\ee3594cc88a44e60adc7c5ed81ae95732a93e0a31ad0490ae5b3548ebaae8d82.exe
      C:\Users\Admin\AppData\Local\Temp\ee3594cc88a44e60adc7c5ed81ae95732a93e0a31ad0490ae5b3548ebaae8d82.exe /AutoIt3ExecuteScript "C:\Users\Admin\AppData\Local\Temp\c" "C:\Users\Admin\AppData\Local\Temp\ee3594cc88a44e60adc7c5ed81ae95732a93e0a31ad0490ae5b3548ebaae8d82.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4884
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
        3⤵
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:4580

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\c

          Filesize

          18KB

          MD5

          9c5502b2e2982351cc8641c920df8590

          SHA1

          7c531c6ee6c66fb84957cc0fa0dd3caa3649e0c4

          SHA256

          89851a264d07fde3beb1d3142d304c36814ecc54fdc3895bc4cfc80c51c7571d

          SHA512

          4752822933d5a3fa00fb4c44078872a8652f86e524c772389e460aeb5a522d8311bfa63d5c30c235eae18b50b67898319d3ccb46e62d0083f85cdc6b99640ec3

        • C:\Users\Admin\AppData\Local\Temp\incl1

          Filesize

          12KB

          MD5

          31fd40fd1891ede7259c8eaca4debcb9

          SHA1

          5e79575a985ba6f98c4b876f84b1355de61aed55

          SHA256

          dc9d156617c01507ebbd09a44a336bd75801ba2ac5ee6240884084e5536b7b01

          SHA512

          6655a831bdb041dcc8c026ec27abb80494e847b8ffdf813a99955c6dcb144ac5916827f3ac1e8b0012e87e88e8cb311cd3f2905072d7e8fe3eca079507d82b6a

        • C:\Users\Admin\AppData\Local\Temp\incl2

          Filesize

          209KB

          MD5

          b0ceb81cb48d7a9e7f38d9ae3fa312c4

          SHA1

          fd5e78daa4f147c83efc736795b0e5f324ee3ab2

          SHA256

          8113ad55663776e41e5eca0615337302fde040e3c5ca22e8fe98fe5d2ab45997

          SHA512

          a22aebb72a0ec0b6211f68354dba5a81b069bf9961d9840d17ffd07c91c69e0d60b489a572155af19756d2df16bc346b70c8ce6e4a95cea46e52b46b518692af

        • memory/4580-137-0x0000000001000000-0x000000000103A000-memory.dmp

          Filesize

          232KB

        • memory/4580-138-0x0000000005AA0000-0x0000000006044000-memory.dmp

          Filesize

          5.6MB

        • memory/4580-139-0x00000000054F0000-0x0000000005582000-memory.dmp

          Filesize

          584KB

        • memory/4580-140-0x0000000005590000-0x000000000562C000-memory.dmp

          Filesize

          624KB

        • memory/4580-141-0x00000000054A0000-0x00000000054AA000-memory.dmp

          Filesize

          40KB