Analysis

  • max time kernel
    91s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/12/2023, 17:08

General

  • Target

    340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe

  • Size

    595KB

  • MD5

    0c9f292df5bb12a2384a0fd2d62a363c

  • SHA1

    ccc4c864a64a4a1945eef4d36a1b3ce208173880

  • SHA256

    340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df

  • SHA512

    9cde74dc3cf0ffd48639f977cbde0caf9b7917431409a181567842760db425b515819961f3912ea9495f8f7c45d999026da50017333e1db9f70f8b6ee2b7a873

  • SSDEEP

    12288:I45+po2sccCAQVStw6wYyBeMSIUJwS+RTbfl+RRiXp2kxtK9Wd:L+pJsbCmyp0JwSjRxkxtK9u

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

    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

    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 8 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\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe
    "C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1520
    • C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe
      "C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe"
      2⤵
        PID:3448
      • C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.exe
        "C:\Users\Admin\AppData\Local\Temp\340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df.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:2168
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC61A.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:4944
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC7A1.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:3572

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\tmpC61A.tmp

            Filesize

            1KB

            MD5

            03f5b9ec9db6068a5562292b3012ed49

            SHA1

            304033e8fde3f437b9a0a2c60671574f042e8799

            SHA256

            8422cf40de0753ca59d6a62f065b5b53b48602577db47da313ae28f6c783f37d

            SHA512

            c0fc6adfe0a354677d1e5d91b466b3a6dbd2d912deb49a0707bc9d41e3915953701877a20a8a9da3a0655eec57ee98a5430817ec51af706706232cda543b13f0

          • C:\Users\Admin\AppData\Local\Temp\tmpC7A1.tmp

            Filesize

            1KB

            MD5

            cdf5683344404764a0f3592e9db8a5a1

            SHA1

            6705943b404de237cdd7080c05af25e2b1b6410c

            SHA256

            1ea0af7c86be3e61c281ada0470c6dcf178834380def1903b5bb78b49440ffff

            SHA512

            23c56873ca8520784cc1d6b0b4211b373fff6fb429872932e5274801d3b9d786566877cd16d1ffa0adca8c7aebb0b935701a0c071073edfbdb319002f99a182b

          • memory/1520-9-0x0000000004F80000-0x0000000004F8A000-memory.dmp

            Filesize

            40KB

          • memory/1520-3-0x0000000005310000-0x00000000058B4000-memory.dmp

            Filesize

            5.6MB

          • memory/1520-4-0x0000000004E10000-0x0000000004EA2000-memory.dmp

            Filesize

            584KB

          • memory/1520-6-0x0000000004F40000-0x0000000004F58000-memory.dmp

            Filesize

            96KB

          • memory/1520-5-0x0000000004F10000-0x0000000004F1A000-memory.dmp

            Filesize

            40KB

          • memory/1520-7-0x0000000074420000-0x0000000074BD0000-memory.dmp

            Filesize

            7.7MB

          • memory/1520-8-0x0000000004F70000-0x0000000004F78000-memory.dmp

            Filesize

            32KB

          • memory/1520-0-0x0000000074420000-0x0000000074BD0000-memory.dmp

            Filesize

            7.7MB

          • memory/1520-10-0x0000000004CE0000-0x0000000004CF0000-memory.dmp

            Filesize

            64KB

          • memory/1520-11-0x0000000006220000-0x0000000006292000-memory.dmp

            Filesize

            456KB

          • memory/1520-12-0x0000000006060000-0x00000000060FC000-memory.dmp

            Filesize

            624KB

          • memory/1520-2-0x0000000004CE0000-0x0000000004CF0000-memory.dmp

            Filesize

            64KB

          • memory/1520-14-0x0000000004CE0000-0x0000000004CF0000-memory.dmp

            Filesize

            64KB

          • memory/1520-1-0x00000000001C0000-0x000000000025A000-memory.dmp

            Filesize

            616KB

          • memory/1520-18-0x0000000074420000-0x0000000074BD0000-memory.dmp

            Filesize

            7.7MB

          • memory/2168-41-0x00000000073E0000-0x000000000740E000-memory.dmp

            Filesize

            184KB

          • memory/2168-39-0x00000000073B0000-0x00000000073C4000-memory.dmp

            Filesize

            80KB

          • memory/2168-13-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/2168-37-0x0000000007380000-0x0000000007394000-memory.dmp

            Filesize

            80KB

          • memory/2168-27-0x0000000006A80000-0x0000000006A9E000-memory.dmp

            Filesize

            120KB

          • memory/2168-28-0x0000000006BA0000-0x0000000006BAA000-memory.dmp

            Filesize

            40KB

          • memory/2168-31-0x0000000007300000-0x0000000007312000-memory.dmp

            Filesize

            72KB

          • memory/2168-33-0x0000000007340000-0x000000000734E000-memory.dmp

            Filesize

            56KB

          • memory/2168-40-0x00000000073D0000-0x00000000073DE000-memory.dmp

            Filesize

            56KB

          • memory/2168-17-0x0000000005C60000-0x0000000005C70000-memory.dmp

            Filesize

            64KB

          • memory/2168-16-0x0000000074420000-0x0000000074BD0000-memory.dmp

            Filesize

            7.7MB

          • memory/2168-38-0x0000000007390000-0x00000000073A0000-memory.dmp

            Filesize

            64KB

          • memory/2168-42-0x0000000007410000-0x0000000007424000-memory.dmp

            Filesize

            80KB

          • memory/2168-26-0x0000000005A80000-0x0000000005A8A000-memory.dmp

            Filesize

            40KB

          • memory/2168-36-0x0000000007370000-0x000000000737C000-memory.dmp

            Filesize

            48KB

          • memory/2168-43-0x00000000075F0000-0x0000000007656000-memory.dmp

            Filesize

            408KB

          • memory/2168-35-0x0000000007360000-0x000000000736E000-memory.dmp

            Filesize

            56KB

          • memory/2168-34-0x0000000007350000-0x0000000007362000-memory.dmp

            Filesize

            72KB

          • memory/2168-32-0x0000000007310000-0x000000000732A000-memory.dmp

            Filesize

            104KB

          • memory/2168-45-0x0000000074420000-0x0000000074BD0000-memory.dmp

            Filesize

            7.7MB

          • memory/2168-46-0x0000000005C60000-0x0000000005C70000-memory.dmp

            Filesize

            64KB