Analysis

  • max time kernel
    121s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    04/12/2023, 06:56

General

  • Target

    cc0f6af0ea57fc9cb9698c534fbbe1b2.exe

  • Size

    780KB

  • MD5

    cc0f6af0ea57fc9cb9698c534fbbe1b2

  • SHA1

    4fd4acb6716bfb889f685045d00662fb3d46be78

  • SHA256

    6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70

  • SHA512

    eaf6132501ad4e9e213606afcc164c4dd8dca4a9a685d2411e23ff4b51ea1a4eddded73d2c953b633d1e92bd052789b6a41daae19a2654fa556392fa5904e4e3

  • SSDEEP

    12288:FW8tW8G34/uK45+po2op+9icdMJG0Bi3SQuFBASUFFJR92DGMAvWrQnTIRy8OJ/k:e34/up+pJzl50ySXASKCyTwecRy83

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

btldinc7.sytes.net:4510

127.0.0.1:4510

Mutex

8dca47d1-e2ac-4cf4-9dae-489155036caa

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2023-09-14T23:25:11.588272936Z

  • 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

    4510

  • default_group

    btld

  • 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

    8dca47d1-e2ac-4cf4-9dae-489155036caa

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    btldinc7.sytes.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 2 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe
    "C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3060
    • C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe
      "C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe"
      2⤵
        PID:2732
      • C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe
        "C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe"
        2⤵
          PID:2736
        • C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.exe
          "C:\Users\Admin\AppData\Local\Temp\cc0f6af0ea57fc9cb9698c534fbbe1b2.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:2840
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "UDP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp82F5.tmp"
            3⤵
            • Creates scheduled task(s)
            PID:2596
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "UDP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp84F9.tmp"
            3⤵
            • Creates scheduled task(s)
            PID:2932

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\tmp82F5.tmp

              Filesize

              1KB

              MD5

              fc7fbae2a7339f292629b47f7c191d91

              SHA1

              2572887548578a060a5eff284dac4e22db06f1d2

              SHA256

              27ad5fb53e16fc402a004b5b5ee6bd52a4acd38ef1f783c774e5bb8b182e429b

              SHA512

              8b67a94d58a006f58ec3274498fec1a3ea689890369ea47794163bb2d7f16bea7bbd7a1c83f01bf523b239c9153e64a7b857263d8c1e09c2618d6e49c7bf77e4

            • C:\Users\Admin\AppData\Local\Temp\tmp84F9.tmp

              Filesize

              1KB

              MD5

              c1c4b266e129249076bbe8a15cc5e06c

              SHA1

              312b8173c264245c834eee91e05dcca845c341f8

              SHA256

              f336d06dcadca621be6b2dc9493dcb84d871497e65142bc9fdd72c9f250a1b7b

              SHA512

              0f02ec7700f89d95d29014eec42d13c85234351c3fe1dc6a3efeea52ea76ca4bea3151567a6c798b5ce658d481b424646b43d93e95ccad897356a87a25d45041

            • memory/2840-9-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2840-37-0x0000000000830000-0x000000000083E000-memory.dmp

              Filesize

              56KB

            • memory/2840-47-0x00000000048D0000-0x0000000004910000-memory.dmp

              Filesize

              256KB

            • memory/2840-46-0x0000000074660000-0x0000000074D4E000-memory.dmp

              Filesize

              6.9MB

            • memory/2840-44-0x00000000020B0000-0x00000000020C4000-memory.dmp

              Filesize

              80KB

            • memory/2840-7-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2840-8-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2840-43-0x0000000002080000-0x00000000020AE000-memory.dmp

              Filesize

              184KB

            • memory/2840-10-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2840-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2840-13-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2840-15-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2840-17-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2840-19-0x0000000074660000-0x0000000074D4E000-memory.dmp

              Filesize

              6.9MB

            • memory/2840-42-0x0000000002020000-0x000000000202E000-memory.dmp

              Filesize

              56KB

            • memory/2840-20-0x00000000048D0000-0x0000000004910000-memory.dmp

              Filesize

              256KB

            • memory/2840-41-0x0000000002010000-0x0000000002024000-memory.dmp

              Filesize

              80KB

            • memory/2840-40-0x0000000001FC0000-0x0000000001FD0000-memory.dmp

              Filesize

              64KB

            • memory/2840-28-0x0000000000450000-0x000000000045A000-memory.dmp

              Filesize

              40KB

            • memory/2840-29-0x0000000000460000-0x000000000047E000-memory.dmp

              Filesize

              120KB

            • memory/2840-30-0x0000000000500000-0x000000000050A000-memory.dmp

              Filesize

              40KB

            • memory/2840-33-0x0000000000530000-0x0000000000542000-memory.dmp

              Filesize

              72KB

            • memory/2840-34-0x0000000000680000-0x000000000069A000-memory.dmp

              Filesize

              104KB

            • memory/2840-35-0x00000000006D0000-0x00000000006DE000-memory.dmp

              Filesize

              56KB

            • memory/2840-36-0x00000000007E0000-0x00000000007F2000-memory.dmp

              Filesize

              72KB

            • memory/2840-39-0x0000000001FB0000-0x0000000001FC4000-memory.dmp

              Filesize

              80KB

            • memory/2840-38-0x0000000000840000-0x000000000084C000-memory.dmp

              Filesize

              48KB

            • memory/3060-2-0x0000000004D80000-0x0000000004DC0000-memory.dmp

              Filesize

              256KB

            • memory/3060-1-0x0000000074660000-0x0000000074D4E000-memory.dmp

              Filesize

              6.9MB

            • memory/3060-3-0x0000000001F20000-0x0000000001F38000-memory.dmp

              Filesize

              96KB

            • memory/3060-18-0x0000000074660000-0x0000000074D4E000-memory.dmp

              Filesize

              6.9MB

            • memory/3060-0-0x00000000000B0000-0x000000000017A000-memory.dmp

              Filesize

              808KB

            • memory/3060-6-0x0000000004EC0000-0x0000000004F32000-memory.dmp

              Filesize

              456KB

            • memory/3060-5-0x0000000000700000-0x000000000070A000-memory.dmp

              Filesize

              40KB

            • memory/3060-4-0x00000000006B0000-0x00000000006B8000-memory.dmp

              Filesize

              32KB