Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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:1436
    • 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:1112
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Roaming\microsoft"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2028
    • 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:3004
      • 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:3064
    • 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:3816
  • 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:4088
    • 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:5076
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Roaming\microsoft"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3692
    • 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:3104
      • 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:2004
    • 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:2444
  • 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:2728
    • 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:1000
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Roaming\microsoft"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3824
    • 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:4956
      • 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:2440
    • 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:1712

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

    03febbff58da1d3318c31657d89c8542

    SHA1

    c9e017bd9d0a4fe533795b227c855935d86c2092

    SHA256

    5164770a37b199a79ccd23b399bb3309228973d9f74c589bc2623dc613b37ac4

    SHA512

    3750c372bbca1892e9c1b34681d592c693e725a8b149c3d6938079cd467628cec42c4293b0d886b57a786abf45f5e7229247b3445001774e3e793ff5a3accfa3

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

    Filesize

    384KB

    MD5

    27aa8ad8930fa0d076510cfb6573ce74

    SHA1

    26da6ec9efcd8b95c2d744373532afd12d26bf8f

    SHA256

    91dc640360851a1e69261fe72d9fa570a73e6d9465c8ebf971dbe840493b890d

    SHA512

    bb1af7c9caf9d05e6bf2ebf3ff8fbada74c0e4fbac04759428da3766110b66a8966081b22c0ffc4dc3a141a0914e552a6fc0a766c037c438546e8d4124f5922f

  • memory/1112-22-0x0000000005FF0000-0x0000000006002000-memory.dmp

    Filesize

    72KB

  • memory/1112-41-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1112-5-0x00000000001A0000-0x00000000001D8000-memory.dmp

    Filesize

    224KB

  • memory/1112-6-0x0000000004A30000-0x0000000004AC2000-memory.dmp

    Filesize

    584KB

  • memory/1112-7-0x0000000004AD0000-0x0000000004B6C000-memory.dmp

    Filesize

    624KB

  • memory/1112-8-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1112-9-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1112-10-0x00000000049E0000-0x00000000049EA000-memory.dmp

    Filesize

    40KB

  • memory/1112-23-0x0000000006000000-0x000000000601A000-memory.dmp

    Filesize

    104KB

  • memory/1112-17-0x0000000004C90000-0x0000000004C9A000-memory.dmp

    Filesize

    40KB

  • memory/1112-18-0x0000000005760000-0x000000000577E000-memory.dmp

    Filesize

    120KB

  • memory/1112-19-0x0000000005890000-0x000000000589A000-memory.dmp

    Filesize

    40KB

  • memory/1112-40-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1112-33-0x00000000062C0000-0x0000000006326000-memory.dmp

    Filesize

    408KB

  • memory/1112-28-0x0000000006070000-0x0000000006080000-memory.dmp

    Filesize

    64KB

  • memory/1112-25-0x0000000006040000-0x000000000604E000-memory.dmp

    Filesize

    56KB

  • memory/1112-26-0x0000000006050000-0x000000000605C000-memory.dmp

    Filesize

    48KB

  • memory/1112-27-0x0000000006060000-0x0000000006074000-memory.dmp

    Filesize

    80KB

  • memory/1112-24-0x0000000006030000-0x000000000603E000-memory.dmp

    Filesize

    56KB

  • memory/1112-29-0x0000000006080000-0x0000000006094000-memory.dmp

    Filesize

    80KB

  • memory/1112-30-0x00000000060B0000-0x00000000060BE000-memory.dmp

    Filesize

    56KB

  • memory/1112-31-0x00000000060C0000-0x00000000060EE000-memory.dmp

    Filesize

    184KB

  • memory/1112-32-0x00000000060F0000-0x0000000006104000-memory.dmp

    Filesize

    80KB

  • memory/1436-3-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1436-1-0x0000000000610000-0x0000000000676000-memory.dmp

    Filesize

    408KB

  • memory/1436-14-0x0000000074500000-0x0000000074CB0000-memory.dmp

    Filesize

    7.7MB

  • memory/1436-2-0x0000000005430000-0x00000000059D4000-memory.dmp

    Filesize

    5.6MB

  • memory/1436-0-0x000000007450E000-0x000000007450F000-memory.dmp

    Filesize

    4KB