Analysis

  • max time kernel
    118s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    29/11/2023, 16:51

General

  • Target

    87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe

  • Size

    608KB

  • MD5

    1e864ccd8567053c95a02ca465fa9084

  • SHA1

    46aa417097ba4262d0502e64d241ffab2406c0c1

  • SHA256

    87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572

  • SHA512

    d3295b1b37f8f45b8324961ed065ee2a8c70745016a7b9dcb2d56f114d18f798823ed7b167138ad81d338d455d8de76112a372c34db4dd5792d7deb4ed354503

  • SSDEEP

    12288:pTCQmbCpzkh2Ob06/YNYSiF3F6QGP/juNXfl7p64zpDeh8JqM:ZoUO062YSw4upf/1pIkqM

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

rn72836.sytes.net:6696

127.0.0.1:6696

Mutex

3f30b298-001f-4f08-b22c-606b0d3632bd

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2023-09-08T19:00:17.997607436Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    6696

  • default_group

    rn728

  • 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

    3f30b298-001f-4f08-b22c-606b0d3632bd

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    rn72836.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\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe
    "C:\Users\Admin\AppData\Local\Temp\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2172
    • C:\Users\Admin\AppData\Local\Temp\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe
      "C:\Users\Admin\AppData\Local\Temp\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe"
      2⤵
        PID:2232
      • C:\Users\Admin\AppData\Local\Temp\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe
        "C:\Users\Admin\AppData\Local\Temp\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe"
        2⤵
          PID:2236
        • C:\Users\Admin\AppData\Local\Temp\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.exe
          "C:\Users\Admin\AppData\Local\Temp\87e9f553b96d552b75210d1a5278039153eedc43e2a10b1166f106e9eba60572exe.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:2108
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "UDP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9685.tmp"
            3⤵
            • Creates scheduled task(s)
            PID:2116
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "UDP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9889.tmp"
            3⤵
            • Creates scheduled task(s)
            PID:2560

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\tmp9685.tmp

              Filesize

              1KB

              MD5

              47158b877b6bff2f98a58ab041bec04f

              SHA1

              bfb2da813de1b3f20fa71c2b33ab673fa787c6e0

              SHA256

              4d6d78cb97d61e2a0ac5c407d6b0e42be7d8c2580c41eee67fa0c7de211e7a17

              SHA512

              66a65e28637cac72d75a384cc5f770d762980af6deb5cb7b00d8f6a1b63f7860dbfe0b3f2b62f1abfc0c4909f6aa1ba779b0e7586622dcbc1dba08bd2f68c611

            • C:\Users\Admin\AppData\Local\Temp\tmp9889.tmp

              Filesize

              1KB

              MD5

              c1c4b266e129249076bbe8a15cc5e06c

              SHA1

              312b8173c264245c834eee91e05dcca845c341f8

              SHA256

              f336d06dcadca621be6b2dc9493dcb84d871497e65142bc9fdd72c9f250a1b7b

              SHA512

              0f02ec7700f89d95d29014eec42d13c85234351c3fe1dc6a3efeea52ea76ca4bea3151567a6c798b5ce658d481b424646b43d93e95ccad897356a87a25d45041

            • memory/2108-11-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2108-41-0x0000000000870000-0x000000000087E000-memory.dmp

              Filesize

              56KB

            • memory/2108-55-0x0000000000550000-0x0000000000590000-memory.dmp

              Filesize

              256KB

            • memory/2108-54-0x0000000074230000-0x000000007491E000-memory.dmp

              Filesize

              6.9MB

            • memory/2108-48-0x0000000004DC0000-0x0000000004DD4000-memory.dmp

              Filesize

              80KB

            • memory/2108-7-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2108-9-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2108-47-0x0000000004F90000-0x0000000004FBE000-memory.dmp

              Filesize

              184KB

            • memory/2108-13-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2108-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2108-17-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2108-19-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2108-21-0x0000000000400000-0x0000000000438000-memory.dmp

              Filesize

              224KB

            • memory/2108-22-0x0000000074230000-0x000000007491E000-memory.dmp

              Filesize

              6.9MB

            • memory/2108-46-0x0000000002210000-0x000000000221E000-memory.dmp

              Filesize

              56KB

            • memory/2108-24-0x0000000000550000-0x0000000000590000-memory.dmp

              Filesize

              256KB

            • memory/2108-45-0x00000000021C0000-0x00000000021D4000-memory.dmp

              Filesize

              80KB

            • memory/2108-44-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/2108-32-0x00000000003E0000-0x00000000003EA000-memory.dmp

              Filesize

              40KB

            • memory/2108-33-0x0000000000590000-0x00000000005AE000-memory.dmp

              Filesize

              120KB

            • memory/2108-34-0x00000000003F0000-0x00000000003FA000-memory.dmp

              Filesize

              40KB

            • memory/2108-37-0x00000000006C0000-0x00000000006D2000-memory.dmp

              Filesize

              72KB

            • memory/2108-38-0x00000000006D0000-0x00000000006EA000-memory.dmp

              Filesize

              104KB

            • memory/2108-39-0x0000000000790000-0x000000000079E000-memory.dmp

              Filesize

              56KB

            • memory/2108-40-0x00000000007B0000-0x00000000007C2000-memory.dmp

              Filesize

              72KB

            • memory/2108-43-0x0000000002060000-0x0000000002074000-memory.dmp

              Filesize

              80KB

            • memory/2108-42-0x0000000000880000-0x000000000088C000-memory.dmp

              Filesize

              48KB

            • memory/2172-2-0x0000000004DF0000-0x0000000004E30000-memory.dmp

              Filesize

              256KB

            • memory/2172-1-0x0000000074230000-0x000000007491E000-memory.dmp

              Filesize

              6.9MB

            • memory/2172-3-0x00000000003A0000-0x00000000003BA000-memory.dmp

              Filesize

              104KB

            • memory/2172-23-0x0000000074230000-0x000000007491E000-memory.dmp

              Filesize

              6.9MB

            • memory/2172-0-0x0000000000220000-0x00000000002BE000-memory.dmp

              Filesize

              632KB

            • memory/2172-6-0x00000000021D0000-0x0000000002242000-memory.dmp

              Filesize

              456KB

            • memory/2172-5-0x0000000000400000-0x000000000040A000-memory.dmp

              Filesize

              40KB

            • memory/2172-4-0x0000000000380000-0x0000000000388000-memory.dmp

              Filesize

              32KB