Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2024, 17:54

General

  • Target

    7ae444463c080f41cec9880113950e23.exe

  • Size

    2.1MB

  • MD5

    7ae444463c080f41cec9880113950e23

  • SHA1

    ffb638e40951dfde732f08e414b01ec991ba37cd

  • SHA256

    5a5b79ba0d6ca74fe3fad866b062600a794a1da6cfe39dfb44e256e8a2175b85

  • SHA512

    b0e1a946f413f48484ba3dc820d3b299ad8df8ec4e4d0036c41081945ca695a67368c9c841632dc87f9e684df59402dbacebe2b65b776d33d944934df7680e1b

  • SSDEEP

    49152:1av4KJbboJXTKy2GmKFYrb0INa4uf5JJhDziO5FASrRxBQt2/j8OkYdzFRZIJMdN:1uFVbWXWjBAY0wHLqa+zyyj885RZBN

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.244.30.139:4050

Mutex

52e05d5b-dcbb-4f70-86bd-eb80b3602ddc

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-02-09T23:01:15.091230736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4050

  • default_group

    money

  • 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

    52e05d5b-dcbb-4f70-86bd-eb80b3602ddc

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    185.244.30.139

  • 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.

  • Executes dropped EXE 2 IoCs
  • UPX packed file 10 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7ae444463c080f41cec9880113950e23.exe
    "C:\Users\Admin\AppData\Local\Temp\7ae444463c080f41cec9880113950e23.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2268
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c test.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:632
      • C:\Users\Admin\AppData\Local\Temp\test.exe
        test.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:3888
        • C:\Users\Admin\AppData\Local\Temp\test.exe
          test.exe
          4⤵
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:1592

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\test.exe

    Filesize

    502KB

    MD5

    bb1822894d880e74c2d146dc3c05f9bb

    SHA1

    4bf0a018db757e2b599b0b1fc36fb5f345a1a82e

    SHA256

    25aa68d90f13a87ef317d634b1ac4b066239b0b4037111ebb11bc041ec54f595

    SHA512

    00a0ff30443b3c4c6104175e20eb64fd4bd33802e90900f49d9888fd3f2cca1c3b5f77cd28bcb1a8691c3fa5ee62502d67e1ef420a261d7a6c2dfd590c2278d0

  • memory/1592-32-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-60-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-16-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1592-17-0x00000000009A0000-0x00000000009D8000-memory.dmp

    Filesize

    224KB

  • memory/1592-30-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-43-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-44-0x00000000754B0000-0x0000000075A61000-memory.dmp

    Filesize

    5.7MB

  • memory/1592-49-0x0000000077D22000-0x0000000077D23000-memory.dmp

    Filesize

    4KB

  • memory/1592-48-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-51-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-50-0x00000000754B0000-0x0000000075A61000-memory.dmp

    Filesize

    5.7MB

  • memory/1592-47-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-31-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-45-0x0000000002370000-0x0000000002380000-memory.dmp

    Filesize

    64KB

  • memory/1592-42-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-41-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-40-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-39-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-38-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-37-0x0000000077D22000-0x0000000077D23000-memory.dmp

    Filesize

    4KB

  • memory/1592-53-0x0000000002370000-0x0000000002380000-memory.dmp

    Filesize

    64KB

  • memory/1592-36-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-35-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-34-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-18-0x00000000009A0000-0x00000000009D8000-memory.dmp

    Filesize

    224KB

  • memory/1592-33-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-46-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-29-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-14-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1592-12-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1592-76-0x0000000002370000-0x0000000002380000-memory.dmp

    Filesize

    64KB

  • memory/1592-75-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-74-0x00000000754B0000-0x0000000075A61000-memory.dmp

    Filesize

    5.7MB

  • memory/1592-61-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-62-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-63-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-7-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1592-54-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1592-55-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-56-0x00000000754B0000-0x0000000075A61000-memory.dmp

    Filesize

    5.7MB

  • memory/1592-57-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-58-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-59-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-64-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-72-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-71-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-70-0x0000000077470000-0x0000000077560000-memory.dmp

    Filesize

    960KB

  • memory/1592-69-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-68-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-67-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-66-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1592-65-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/2268-0-0x0000000000400000-0x0000000000847000-memory.dmp

    Filesize

    4.3MB

  • memory/2268-15-0x0000000000400000-0x0000000000847000-memory.dmp

    Filesize

    4.3MB

  • memory/3888-10-0x0000000002360000-0x000000000236C000-memory.dmp

    Filesize

    48KB

  • memory/3888-11-0x0000000000400000-0x00000000004D3000-memory.dmp

    Filesize

    844KB

  • memory/3888-13-0x0000000002510000-0x0000000002511000-memory.dmp

    Filesize

    4KB

  • memory/3888-6-0x0000000002330000-0x0000000002331000-memory.dmp

    Filesize

    4KB

  • memory/3888-5-0x0000000000400000-0x00000000004D3000-memory.dmp

    Filesize

    844KB