Analysis

  • max time kernel
    106s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-10-2022 06:44

General

  • Target

    77cade1617699ab5667cbeac85ba478f3640bfbbd2abfe2dd16b6a41cbd9a4d3.exe

  • Size

    1.1MB

  • MD5

    72124c549ed558d40f28bc928fa4f2a4

  • SHA1

    0116345620a37fd748e9127f0a96b744de685200

  • SHA256

    77cade1617699ab5667cbeac85ba478f3640bfbbd2abfe2dd16b6a41cbd9a4d3

  • SHA512

    ef2a14ca0b1b61f48c33338c1c53a1f2c139d5d99624f905ed8f0eadf6e4966854ed833308544005fe50a4fda4882824f02cbb85140df6cfb386d214c2dd3a9e

  • SSDEEP

    24576:dxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxNussDEOux4Pg:kEOFXYu5+Fdj

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

tzitziklishop.ddns.net:1665

Mutex

f6041bb2-7c7b-4774-acc8-84a131b635ab

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    tzitziklishop.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-07-22T04:21:36.365135136Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1665

  • default_group

    OCTOBER

  • 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

    f6041bb2-7c7b-4774-acc8-84a131b635ab

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    tzitziklishop.ddns.net

  • 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.

  • 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
  • Drops file in Program Files directory 2 IoCs
  • Creates scheduled task(s) 1 TTPs 2 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 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\77cade1617699ab5667cbeac85ba478f3640bfbbd2abfe2dd16b6a41cbd9a4d3.exe
    "C:\Users\Admin\AppData\Local\Temp\77cade1617699ab5667cbeac85ba478f3640bfbbd2abfe2dd16b6a41cbd9a4d3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2548
    • C:\Users\Admin\AppData\Local\Temp\77cade1617699ab5667cbeac85ba478f3640bfbbd2abfe2dd16b6a41cbd9a4d3.exe
      "C:\Users\Admin\AppData\Local\Temp\77cade1617699ab5667cbeac85ba478f3640bfbbd2abfe2dd16b6a41cbd9a4d3.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2452
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7196.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4220
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7262.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3656

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp7196.tmp

    Filesize

    1KB

    MD5

    c47e8a37a30d64a161b634d46c8158e6

    SHA1

    bacad0409c3a9867fc8a95d4f4afefdccb4d2434

    SHA256

    97bee4e445e3dc6b4db36d6ea2c5e9e4070e461e8da6e513e8674e59af03967e

    SHA512

    04c19e7e8f3b7387de9a979d6d12f20109b19494fe04931338ead662d2e82bdfd6ede6164c63e613d867c197d23c65d98763ae74997be26b662e282228fa0b83

  • C:\Users\Admin\AppData\Local\Temp\tmp7262.tmp

    Filesize

    1KB

    MD5

    2f26d92c1eeead3896820e56ec46f6f1

    SHA1

    d95533b61eed7d89e4ada56bc566d60e42ac1f61

    SHA256

    99a158463ce40c750bad6991ae1fceece305a0dbf8e209dd7147b5d539756bfa

    SHA512

    6c1ed12d5e1afcd9e7f327e0153786fd8594f75a995f341c408ef014e69917452a9fe99c511f0249aceb57b3045b707f1fd3f404e4086cfbf0aadcb3318db892

  • memory/2452-138-0x0000000000000000-mapping.dmp

  • memory/2452-139-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2548-132-0x0000000000B00000-0x0000000000C20000-memory.dmp

    Filesize

    1.1MB

  • memory/2548-133-0x0000000005C00000-0x00000000061A4000-memory.dmp

    Filesize

    5.6MB

  • memory/2548-134-0x00000000055A0000-0x0000000005632000-memory.dmp

    Filesize

    584KB

  • memory/2548-135-0x0000000005760000-0x000000000576A000-memory.dmp

    Filesize

    40KB

  • memory/2548-136-0x000000000C0D0000-0x000000000C16C000-memory.dmp

    Filesize

    624KB

  • memory/2548-137-0x000000000C170000-0x000000000C1D6000-memory.dmp

    Filesize

    408KB

  • memory/3656-142-0x0000000000000000-mapping.dmp

  • memory/4220-140-0x0000000000000000-mapping.dmp