Analysis

  • max time kernel
    140s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-04-2024 04:28

General

  • Target

    gK5vkTm6WAcfbiz.exe

  • Size

    630KB

  • MD5

    55abd8961bb1559aacdd14bc4abe2948

  • SHA1

    cff001eea9b43d712fbcc4cf9fb9b136f8c4109d

  • SHA256

    0117ba3b90a77a00da548bf15490d6623de69e535d75fbbce8279b91c82f5ef6

  • SHA512

    e5a6e38bc943c2b6fe7c157f3e719303c7b216edf3d483dd7c2b7a4267dd3d0d6b500015ef96d3c041e2032e6aabec6787bebb6f4af3f2070d9cb9fa8d2b4c2b

  • SSDEEP

    12288:KjB778QTJ4oNyNN1N84trNRngS5B2/JD3CJMJjEebEPs18VT1IMajPsWj6Mr:UBlJ4tNXN84NgSUtCW1EeAaihaDsWj6Q

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

december2nd.ddns.net:64418

december2n.duckdns.org:64418

Mutex

a73ea09a-fffa-47fc-8cf2-8699258828eb

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    december2n.duckdns.org

  • backup_dns_server

  • buffer_size

    65538

  • build_time

    2024-02-03T01:52:12.147368736Z

  • 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

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    64418

  • default_group

    NO GREE

  • enable_debug_mode

    true

  • gc_threshold

    1.0485772e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.0485772e+07

  • mutex

    a73ea09a-fffa-47fc-8cf2-8699258828eb

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    december2nd.ddns.net

  • primary_dns_server

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    false

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8009

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
  • Checks whether UAC is enabled 1 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 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\gK5vkTm6WAcfbiz.exe
    "C:\Users\Admin\AppData\Local\Temp\gK5vkTm6WAcfbiz.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2624
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\gK5vkTm6WAcfbiz.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4080
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZYoQJBONC.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4040
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZYoQJBONC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8906.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1044
    • C:\Users\Admin\AppData\Local\Temp\gK5vkTm6WAcfbiz.exe
      "C:\Users\Admin\AppData\Local\Temp\gK5vkTm6WAcfbiz.exe"
      2⤵
        PID:972
      • C:\Users\Admin\AppData\Local\Temp\gK5vkTm6WAcfbiz.exe
        "C:\Users\Admin\AppData\Local\Temp\gK5vkTm6WAcfbiz.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:1636
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8D8A.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:4620
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8F31.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:824

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_spos4lhu.x4u.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp8906.tmp

      Filesize

      1KB

      MD5

      253388a458ba2d6ec842afc7a55e6854

      SHA1

      64ee2323d2e053e40f268f9e5147b1f204970c23

      SHA256

      79361b7bf0a99528f67732286f3180d020dc571573ba7f0fc9b254e9edb92fc4

      SHA512

      426d58e694bac78fcf0966b45d17f5636935c840fa3fc4cc038e59145c61e52f3af6d0aa8b21a1a9bc19c282339ec4d9609ac5c9e34691d4970f4563a0a9b09a

    • C:\Users\Admin\AppData\Local\Temp\tmp8D8A.tmp

      Filesize

      1KB

      MD5

      d4561c71381b52aaedee04fb1dd48775

      SHA1

      c8c2ff059414c1e9fd75a6f4e69067de017f5358

      SHA256

      7a0ff9bd88d411effa13a431e003693a1a3e5b5f02d0b68a6f42db98cc214b09

      SHA512

      c1bd2bab168965624bcb758f360f87492a4dfadb11a95b6becc98b670f43aa49adc6cb1c93e4bbf44333993d59c697fd8450dc3ce7377a4ebdad3650684b962f

    • C:\Users\Admin\AppData\Local\Temp\tmp8F31.tmp

      Filesize

      1KB

      MD5

      0479d5f304ef2d7e3c15fb24a99f88c1

      SHA1

      8edbb1450a656fac5f5e96779ffe440ee8c1aec9

      SHA256

      112557c2b2d0c669a3b115129dc32f005341e965330fa8f2ad3e5de1926594bc

      SHA512

      537e8d87e5cd975f0e69bb145f81d6e9d7b0d82eed143ac351304ea38577137386a51fdb7357ec6d641eb04ff5f51e249bba2db8a4b5bf2934d561394a4a3f15

    • memory/1636-63-0x0000000005FC0000-0x0000000005FCA000-memory.dmp

      Filesize

      40KB

    • memory/1636-62-0x0000000005000000-0x000000000501E000-memory.dmp

      Filesize

      120KB

    • memory/1636-61-0x0000000004FB0000-0x0000000004FBC000-memory.dmp

      Filesize

      48KB

    • memory/1636-60-0x0000000004FC0000-0x0000000004FCA000-memory.dmp

      Filesize

      40KB

    • memory/1636-48-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/2624-10-0x0000000008630000-0x00000000086CC000-memory.dmp

      Filesize

      624KB

    • memory/2624-24-0x0000000004BD0000-0x0000000004BE0000-memory.dmp

      Filesize

      64KB

    • memory/2624-8-0x0000000005E90000-0x0000000005EA6000-memory.dmp

      Filesize

      88KB

    • memory/2624-0-0x00000000001A0000-0x0000000000244000-memory.dmp

      Filesize

      656KB

    • memory/2624-16-0x0000000074AD0000-0x0000000075280000-memory.dmp

      Filesize

      7.7MB

    • memory/2624-7-0x0000000005E80000-0x0000000005E8E000-memory.dmp

      Filesize

      56KB

    • memory/2624-50-0x0000000074AD0000-0x0000000075280000-memory.dmp

      Filesize

      7.7MB

    • memory/2624-9-0x0000000005F10000-0x0000000005F8C000-memory.dmp

      Filesize

      496KB

    • memory/2624-6-0x0000000004FA0000-0x0000000004FB8000-memory.dmp

      Filesize

      96KB

    • memory/2624-5-0x0000000004BD0000-0x0000000004BE0000-memory.dmp

      Filesize

      64KB

    • memory/2624-4-0x0000000004DE0000-0x0000000004DEA000-memory.dmp

      Filesize

      40KB

    • memory/2624-3-0x0000000004C20000-0x0000000004CB2000-memory.dmp

      Filesize

      584KB

    • memory/2624-1-0x0000000074AD0000-0x0000000075280000-memory.dmp

      Filesize

      7.7MB

    • memory/2624-2-0x00000000050D0000-0x0000000005674000-memory.dmp

      Filesize

      5.6MB

    • memory/4040-89-0x0000000006DD0000-0x0000000006DDA000-memory.dmp

      Filesize

      40KB

    • memory/4040-37-0x0000000004550000-0x0000000004560000-memory.dmp

      Filesize

      64KB

    • memory/4040-34-0x0000000074AD0000-0x0000000075280000-memory.dmp

      Filesize

      7.7MB

    • memory/4040-35-0x0000000004550000-0x0000000004560000-memory.dmp

      Filesize

      64KB

    • memory/4040-76-0x00000000712C0000-0x000000007130C000-memory.dmp

      Filesize

      304KB

    • memory/4040-87-0x00000000073B0000-0x0000000007A2A000-memory.dmp

      Filesize

      6.5MB

    • memory/4040-99-0x0000000074AD0000-0x0000000075280000-memory.dmp

      Filesize

      7.7MB

    • memory/4080-17-0x0000000005510000-0x0000000005B38000-memory.dmp

      Filesize

      6.2MB

    • memory/4080-51-0x00000000062A0000-0x00000000062BE000-memory.dmp

      Filesize

      120KB

    • memory/4080-52-0x0000000006880000-0x00000000068CC000-memory.dmp

      Filesize

      304KB

    • memory/4080-20-0x0000000074AD0000-0x0000000075280000-memory.dmp

      Filesize

      7.7MB

    • memory/4080-36-0x0000000005D90000-0x00000000060E4000-memory.dmp

      Filesize

      3.3MB

    • memory/4080-21-0x0000000005C20000-0x0000000005C86000-memory.dmp

      Filesize

      408KB

    • memory/4080-22-0x0000000002B10000-0x0000000002B20000-memory.dmp

      Filesize

      64KB

    • memory/4080-77-0x00000000072D0000-0x0000000007373000-memory.dmp

      Filesize

      652KB

    • memory/4080-23-0x0000000002B10000-0x0000000002B20000-memory.dmp

      Filesize

      64KB

    • memory/4080-75-0x0000000006820000-0x000000000683E000-memory.dmp

      Filesize

      120KB

    • memory/4080-65-0x00000000712C0000-0x000000007130C000-memory.dmp

      Filesize

      304KB

    • memory/4080-64-0x0000000007290000-0x00000000072C2000-memory.dmp

      Filesize

      200KB

    • memory/4080-19-0x0000000005BB0000-0x0000000005C16000-memory.dmp

      Filesize

      408KB

    • memory/4080-88-0x00000000073C0000-0x00000000073DA000-memory.dmp

      Filesize

      104KB

    • memory/4080-18-0x00000000054E0000-0x0000000005502000-memory.dmp

      Filesize

      136KB

    • memory/4080-90-0x0000000007870000-0x0000000007906000-memory.dmp

      Filesize

      600KB

    • memory/4080-91-0x00000000077D0000-0x00000000077E1000-memory.dmp

      Filesize

      68KB

    • memory/4080-92-0x0000000007800000-0x000000000780E000-memory.dmp

      Filesize

      56KB

    • memory/4080-93-0x0000000007810000-0x0000000007824000-memory.dmp

      Filesize

      80KB

    • memory/4080-94-0x0000000007910000-0x000000000792A000-memory.dmp

      Filesize

      104KB

    • memory/4080-95-0x0000000007850000-0x0000000007858000-memory.dmp

      Filesize

      32KB

    • memory/4080-15-0x00000000029A0000-0x00000000029D6000-memory.dmp

      Filesize

      216KB

    • memory/4080-98-0x0000000074AD0000-0x0000000075280000-memory.dmp

      Filesize

      7.7MB