Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    11-08-2024 18:29

General

  • Target

    91dc640360851a1e69261fe72d9fa570a73e6d9465c8ebf971dbe840493b890d.exe

  • Size

    384KB

  • MD5

    27aa8ad8930fa0d076510cfb6573ce74

  • SHA1

    26da6ec9efcd8b95c2d744373532afd12d26bf8f

  • SHA256

    91dc640360851a1e69261fe72d9fa570a73e6d9465c8ebf971dbe840493b890d

  • SHA512

    bb1af7c9caf9d05e6bf2ebf3ff8fbada74c0e4fbac04759428da3766110b66a8966081b22c0ffc4dc3a141a0914e552a6fc0a766c037c438546e8d4124f5922f

  • SSDEEP

    6144:6JHf/OboJwboxHcE2Heo6e+qFCKs7cDZGrBKdt7cWZGbpYByPT7lyvIcbSIvF68U:c3VwboxHc8o6epUVKd9cWvByPHly5WIl

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

blackangel.hopto.org:54984

Mutex

f71cda30-fa3d-4402-acaf-cf2c8c816f12

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    blackangel.hopto.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-04-20T19:45:18.703376436Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    54984

  • 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

    f71cda30-fa3d-4402-acaf-cf2c8c816f12

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    blackangel.hopto.org

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • 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 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 18 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91dc640360851a1e69261fe72d9fa570a73e6d9465c8ebf971dbe840493b890d.exe
    "C:\Users\Admin\AppData\Local\Temp\91dc640360851a1e69261fe72d9fa570a73e6d9465c8ebf971dbe840493b890d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3172
    • C:\Users\Admin\AppData\Local\Temp\91dc640360851a1e69261fe72d9fa570a73e6d9465c8ebf971dbe840493b890d.exe
      "C:\Users\Admin\AppData\Local\Temp\91dc640360851a1e69261fe72d9fa570a73e6d9465c8ebf971dbe840493b890d.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1412
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Roaming\microsoft"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4060
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe'" /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4128
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe'" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2784
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\91dc640360851a1e69261fe72d9fa570a73e6d9465c8ebf971dbe840493b890d.exe" "C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3524
  • C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe
    C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4724
    • C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe
      "C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3736
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Roaming\microsoft"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2972
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe'" /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2896
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe'" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2872
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C copy "C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe" "C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1196
  • C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe
    C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2080
    • C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe
      "C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4788
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Roaming\microsoft"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:624
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe'" /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1064
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe'" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1632
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C copy "C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe" "C:\Users\Admin\AppData\Roaming\microsoft\microsoft.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4332

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\microsoft.exe.log

    Filesize

    520B

    MD5

    197fd086992c5b5eb6157c9a3a975845

    SHA1

    0f91d80c561c3c9398dca480bccd2b97be7d3995

    SHA256

    3ed1b46e4594bb416a85f689348ecea7a74c7529a9997f116ada05d1430683c4

    SHA512

    2deb85a9ee1b4e99e9a3875ab6089da6fe7e6e502fc2eebf65e8c9de9e2fae79b07465f2c71b24739914952cd4d646b71ddca4adf602b4cafebff01e4a8a9ad2

  • C:\Users\Admin\AppData\Roaming\Microsoft\microsoft.exe

    Filesize

    384KB

    MD5

    27aa8ad8930fa0d076510cfb6573ce74

    SHA1

    26da6ec9efcd8b95c2d744373532afd12d26bf8f

    SHA256

    91dc640360851a1e69261fe72d9fa570a73e6d9465c8ebf971dbe840493b890d

    SHA512

    bb1af7c9caf9d05e6bf2ebf3ff8fbada74c0e4fbac04759428da3766110b66a8966081b22c0ffc4dc3a141a0914e552a6fc0a766c037c438546e8d4124f5922f

  • memory/1412-22-0x00000000064D0000-0x00000000064E2000-memory.dmp

    Filesize

    72KB

  • memory/1412-36-0x00000000742E0000-0x0000000074A91000-memory.dmp

    Filesize

    7.7MB

  • memory/1412-6-0x0000000004D60000-0x0000000004DF2000-memory.dmp

    Filesize

    584KB

  • memory/1412-5-0x0000000000780000-0x00000000007B8000-memory.dmp

    Filesize

    224KB

  • memory/1412-7-0x0000000004EA0000-0x0000000004F3C000-memory.dmp

    Filesize

    624KB

  • memory/1412-8-0x00000000742E0000-0x0000000074A91000-memory.dmp

    Filesize

    7.7MB

  • memory/1412-10-0x0000000004E00000-0x0000000004E0A000-memory.dmp

    Filesize

    40KB

  • memory/1412-9-0x00000000742E0000-0x0000000074A91000-memory.dmp

    Filesize

    7.7MB

  • memory/1412-13-0x0000000004E90000-0x0000000004E9A000-memory.dmp

    Filesize

    40KB

  • memory/1412-14-0x0000000005030000-0x000000000504E000-memory.dmp

    Filesize

    120KB

  • memory/1412-15-0x0000000005B40000-0x0000000005B4A000-memory.dmp

    Filesize

    40KB

  • memory/1412-23-0x00000000064E0000-0x00000000064FA000-memory.dmp

    Filesize

    104KB

  • memory/1412-35-0x00000000742E0000-0x0000000074A91000-memory.dmp

    Filesize

    7.7MB

  • memory/1412-33-0x0000000006660000-0x00000000066C6000-memory.dmp

    Filesize

    408KB

  • memory/1412-28-0x0000000006550000-0x0000000006560000-memory.dmp

    Filesize

    64KB

  • memory/1412-25-0x0000000006520000-0x000000000652E000-memory.dmp

    Filesize

    56KB

  • memory/1412-26-0x0000000006530000-0x000000000653C000-memory.dmp

    Filesize

    48KB

  • memory/1412-27-0x0000000006540000-0x0000000006554000-memory.dmp

    Filesize

    80KB

  • memory/1412-24-0x0000000006510000-0x000000000651E000-memory.dmp

    Filesize

    56KB

  • memory/1412-29-0x0000000006560000-0x0000000006574000-memory.dmp

    Filesize

    80KB

  • memory/1412-31-0x00000000065A0000-0x00000000065CE000-memory.dmp

    Filesize

    184KB

  • memory/1412-32-0x00000000065D0000-0x00000000065E4000-memory.dmp

    Filesize

    80KB

  • memory/1412-30-0x0000000006590000-0x000000000659E000-memory.dmp

    Filesize

    56KB

  • memory/3172-3-0x00000000742E0000-0x0000000074A91000-memory.dmp

    Filesize

    7.7MB

  • memory/3172-1-0x0000000000FA0000-0x0000000001006000-memory.dmp

    Filesize

    408KB

  • memory/3172-19-0x00000000742E0000-0x0000000074A91000-memory.dmp

    Filesize

    7.7MB

  • memory/3172-2-0x0000000006080000-0x0000000006626000-memory.dmp

    Filesize

    5.6MB

  • memory/3172-0-0x00000000742EE000-0x00000000742EF000-memory.dmp

    Filesize

    4KB