Analysis

  • max time kernel
    167s
  • max time network
    179s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2023, 08:38

General

  • Target

    605c35366b7c51d33746d7173b9a5169.exe

  • Size

    1.1MB

  • MD5

    605c35366b7c51d33746d7173b9a5169

  • SHA1

    f75fb8bb1b086ad55461ab18227d35811b4cc5d6

  • SHA256

    4a67899d740ecd593679a000e4fd663474307306640d8862a2d986ba4ce3b189

  • SHA512

    1459976dbc4fc81ace18c90e87cf39149971ed1e796c4e2997e1cb760d7dd299bad8bbef53c6ae7e6ee67e38dcb94c6768e1f7469b0890c28e48f4450c50f5f6

  • SSDEEP

    24576:IxVxBeKif9i/ylluneUyxcaMep/ahpka:I/xBfyPfuneP1Mepy

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

1116.hopto.org:1116

185.140.53.9:1116

Mutex

909dcd33-e0d7-4bd0-87b2-b7fd2611b6b9

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    185.140.53.9

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-02-16T08:43:19.524585136Z

  • 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

    1116

  • default_group

    1116

  • 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

    909dcd33-e0d7-4bd0-87b2-b7fd2611b6b9

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    1116.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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\605c35366b7c51d33746d7173b9a5169.exe
    "C:\Users\Admin\AppData\Local\Temp\605c35366b7c51d33746d7173b9a5169.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4292
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sjxNYmz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp64.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:320
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4892
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "ARP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp749.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2292
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "ARP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp10C0.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2500

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmp10C0.tmp

          Filesize

          1KB

          MD5

          b6fc28b9f341812fc919e0d4c5ac0941

          SHA1

          d49341ec5a78189830dbf64b2bb553d0fbe06e88

          SHA256

          2aacf4d9629bbec978f5a9ecfe8009cd18cfb5dbde09507937e0aaa13b1aeaba

          SHA512

          166ece1d42a5f438142bc5df5f34b30ee17de5844383bb7517200ee77d77b1b8096e963739cc9188602742984d2e1dc8bc9788d8ae12010e5a05415676e29fdf

        • C:\Users\Admin\AppData\Local\Temp\tmp64.tmp

          Filesize

          1KB

          MD5

          5ab73a4127f2b244bb189cb2390cb47c

          SHA1

          2257d69c15a7e9cf669acb09d47a6deae90b510c

          SHA256

          6c823819052208efc65d3615a7a193122b2c94fb3914a11737cae1568e09a189

          SHA512

          dbd310258e537d9b3fd442c22d582a5160f4d7b0a5fdb4602102b4893ce9a080b9fea772433477c744f6718a864860fd8e2867e3dd835bd5ac6a06aa6c646bf8

        • C:\Users\Admin\AppData\Local\Temp\tmp749.tmp

          Filesize

          1KB

          MD5

          8cad1b41587ced0f1e74396794f31d58

          SHA1

          11054bf74fcf5e8e412768035e4dae43aa7b710f

          SHA256

          3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

          SHA512

          99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

        • memory/4292-6-0x0000000005850000-0x000000000585A000-memory.dmp

          Filesize

          40KB

        • memory/4292-0-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/4292-5-0x0000000005B10000-0x0000000005B20000-memory.dmp

          Filesize

          64KB

        • memory/4292-1-0x0000000000D50000-0x0000000000E6E000-memory.dmp

          Filesize

          1.1MB

        • memory/4292-7-0x0000000005B80000-0x0000000005BD6000-memory.dmp

          Filesize

          344KB

        • memory/4292-8-0x0000000005D90000-0x0000000005DB2000-memory.dmp

          Filesize

          136KB

        • memory/4292-9-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/4292-10-0x0000000005B10000-0x0000000005B20000-memory.dmp

          Filesize

          64KB

        • memory/4292-11-0x00000000016E0000-0x0000000001762000-memory.dmp

          Filesize

          520KB

        • memory/4292-12-0x00000000015E0000-0x000000000161A000-memory.dmp

          Filesize

          232KB

        • memory/4292-3-0x0000000005EF0000-0x0000000006494000-memory.dmp

          Filesize

          5.6MB

        • memory/4292-4-0x0000000005940000-0x00000000059D2000-memory.dmp

          Filesize

          584KB

        • memory/4292-2-0x00000000058A0000-0x000000000593C000-memory.dmp

          Filesize

          624KB

        • memory/4292-20-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/4892-22-0x0000000005330000-0x0000000005340000-memory.dmp

          Filesize

          64KB

        • memory/4892-21-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/4892-18-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/4892-31-0x00000000061E0000-0x00000000061FE000-memory.dmp

          Filesize

          120KB

        • memory/4892-30-0x0000000005FE0000-0x0000000005FEA000-memory.dmp

          Filesize

          40KB

        • memory/4892-32-0x0000000006440000-0x000000000644A000-memory.dmp

          Filesize

          40KB

        • memory/4892-33-0x0000000005330000-0x0000000005340000-memory.dmp

          Filesize

          64KB

        • memory/4892-34-0x0000000075190000-0x0000000075940000-memory.dmp

          Filesize

          7.7MB

        • memory/4892-35-0x0000000005330000-0x0000000005340000-memory.dmp

          Filesize

          64KB

        • memory/4892-36-0x0000000005330000-0x0000000005340000-memory.dmp

          Filesize

          64KB