Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-05-2024 07:31

General

  • Target

    6575D4BA39394CD5951B20909039EBD1.exe

  • Size

    659KB

  • MD5

    6575d4ba39394cd5951b20909039ebd1

  • SHA1

    c2ad0eb283b54e0cb47234e4d9373ba58c25161b

  • SHA256

    58bff9dfeb9660c884056b2ffd90e796adbc9e6e6d5292f39609b153c4e2acc0

  • SHA512

    946b35a0dffb071a821103747701add3c498d1eaecebceef7fed52bd99deb84b8161faaf0e55df639b950d01b91f81704d4aecac24ea82588b2a7ca2068ea699

  • SSDEEP

    12288:mWMsHf5WeLAfMTxdXwZMoSO7ilnd28wu/ZTAx9oxyTJOYfollt:nf5W5EdxhO7ild2SxTkgGFfQl

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

december2nd.ddns.net:65024

december2n.duckdns.org:65024

Mutex

2c009a56-c28c-48f4-8875-acf9e1222e9f

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    december2n.duckdns.org

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2024-02-17T09:12:36.211032636Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    65024

  • default_group

    NO GREE

  • 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

    2c009a56-c28c-48f4-8875-acf9e1222e9f

  • 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

    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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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 22 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6575D4BA39394CD5951B20909039EBD1.exe
    "C:\Users\Admin\AppData\Local\Temp\6575D4BA39394CD5951B20909039EBD1.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2716
    • 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\6575D4BA39394CD5951B20909039EBD1.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2544
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\BGhfFrEN.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3944
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BGhfFrEN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp825F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1840
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:4456
      • 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:5056
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "WPA Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8666.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:2344
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "WPA Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp86C5.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1672

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Command and Scripting Interpreter

    1
    T1059

    PowerShell

    1
    T1059.001

    Scheduled Task/Job

    1
    T1053

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
      Filesize

      18KB

      MD5

      af5f456b603fd1c6ccbf85a9045e4d81

      SHA1

      b5b53e58eaf8fcd30d843a166f64abefdc9bad7b

      SHA256

      630b123a34a129aeeb8b90e6ec07ddb81690894fc418ce530e1ffac736c00418

      SHA512

      827c5004ea54997ead2ba16267c948efa7f5bfdb60238a1281f4568a9601da6a98cb96fc9200b31a7340f484eb55f2e4a398e8e708484954a4bb763f68d74747

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gdeaus2u.yqh.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp825F.tmp
      Filesize

      1KB

      MD5

      b66b70eecda419fd7c4b0f7121ad2170

      SHA1

      aa431da300c0ea363829f03afe09d4538346e187

      SHA256

      f5fa5f14dbf85799af391d11477d804557656c755667fbf92b1e41074f7834c6

      SHA512

      776d12c3e8238a1b960f8ae8112c0b0ca11c6bf620888924f3918759ba8118c86675c93bf0270ef62b19f353ff93f9ffcc6ed88867a3fbb025e1589d6ecdd5e7

    • C:\Users\Admin\AppData\Local\Temp\tmp8666.tmp
      Filesize

      1KB

      MD5

      8cad1b41587ced0f1e74396794f31d58

      SHA1

      11054bf74fcf5e8e412768035e4dae43aa7b710f

      SHA256

      3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

      SHA512

      99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

    • C:\Users\Admin\AppData\Local\Temp\tmp86C5.tmp
      Filesize

      1KB

      MD5

      a246b3561d823177f3586e629f144233

      SHA1

      0f05d12e55a1d2e5e6a4f307c193882fba093315

      SHA256

      6abae7707b06e52b58f537b335e367cc54b093e899d78f16e94ceaf7ceafca52

      SHA512

      4246aa9a96331e2c7e36b37fa778e31ecae055c77164e0dc673aa50cdec368f08d356ab06ef1a4540816c474828048ab1bebed7e211a4eb929f2918e1fac9c6d

    • memory/2544-93-0x0000000007C70000-0x0000000007C8A000-memory.dmp
      Filesize

      104KB

    • memory/2544-19-0x0000000074C40000-0x00000000753F0000-memory.dmp
      Filesize

      7.7MB

    • memory/2544-39-0x0000000074C40000-0x00000000753F0000-memory.dmp
      Filesize

      7.7MB

    • memory/2544-65-0x00000000754D0000-0x000000007551C000-memory.dmp
      Filesize

      304KB

    • memory/2544-51-0x00000000066A0000-0x00000000066EC000-memory.dmp
      Filesize

      304KB

    • memory/2544-16-0x0000000005040000-0x0000000005076000-memory.dmp
      Filesize

      216KB

    • memory/2544-22-0x0000000005750000-0x0000000005772000-memory.dmp
      Filesize

      136KB

    • memory/2544-17-0x0000000074C40000-0x00000000753F0000-memory.dmp
      Filesize

      7.7MB

    • memory/2544-18-0x0000000005800000-0x0000000005E28000-memory.dmp
      Filesize

      6.2MB

    • memory/2544-50-0x0000000006610000-0x000000000662E000-memory.dmp
      Filesize

      120KB

    • memory/2544-91-0x0000000007B60000-0x0000000007B6E000-memory.dmp
      Filesize

      56KB

    • memory/2544-100-0x0000000074C40000-0x00000000753F0000-memory.dmp
      Filesize

      7.7MB

    • memory/2544-88-0x00000000079B0000-0x00000000079BA000-memory.dmp
      Filesize

      40KB

    • memory/2544-24-0x0000000005EA0000-0x0000000005F06000-memory.dmp
      Filesize

      408KB

    • memory/2544-27-0x0000000005F90000-0x00000000062E4000-memory.dmp
      Filesize

      3.3MB

    • memory/2544-85-0x0000000007820000-0x00000000078C3000-memory.dmp
      Filesize

      652KB

    • memory/2544-23-0x0000000005E30000-0x0000000005E96000-memory.dmp
      Filesize

      408KB

    • memory/2716-9-0x0000000006E30000-0x0000000006E46000-memory.dmp
      Filesize

      88KB

    • memory/2716-15-0x0000000074C4E000-0x0000000074C4F000-memory.dmp
      Filesize

      4KB

    • memory/2716-10-0x00000000084A0000-0x000000000851C000-memory.dmp
      Filesize

      496KB

    • memory/2716-8-0x0000000006D00000-0x0000000006D10000-memory.dmp
      Filesize

      64KB

    • memory/2716-38-0x0000000074C40000-0x00000000753F0000-memory.dmp
      Filesize

      7.7MB

    • memory/2716-7-0x0000000005F20000-0x0000000005F3E000-memory.dmp
      Filesize

      120KB

    • memory/2716-4-0x0000000074C40000-0x00000000753F0000-memory.dmp
      Filesize

      7.7MB

    • memory/2716-5-0x0000000005950000-0x000000000595A000-memory.dmp
      Filesize

      40KB

    • memory/2716-6-0x0000000005BE0000-0x0000000005C7C000-memory.dmp
      Filesize

      624KB

    • memory/2716-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp
      Filesize

      4KB

    • memory/2716-3-0x0000000005990000-0x0000000005A22000-memory.dmp
      Filesize

      584KB

    • memory/2716-2-0x0000000005F40000-0x00000000064E4000-memory.dmp
      Filesize

      5.6MB

    • memory/2716-1-0x0000000000EB0000-0x0000000000F5C000-memory.dmp
      Filesize

      688KB

    • memory/3944-92-0x0000000007C90000-0x0000000007CA4000-memory.dmp
      Filesize

      80KB

    • memory/3944-25-0x0000000074C40000-0x00000000753F0000-memory.dmp
      Filesize

      7.7MB

    • memory/3944-63-0x0000000006CA0000-0x0000000006CD2000-memory.dmp
      Filesize

      200KB

    • memory/3944-83-0x0000000006C70000-0x0000000006C8E000-memory.dmp
      Filesize

      120KB

    • memory/3944-21-0x0000000074C40000-0x00000000753F0000-memory.dmp
      Filesize

      7.7MB

    • memory/3944-87-0x0000000007A50000-0x0000000007A6A000-memory.dmp
      Filesize

      104KB

    • memory/3944-86-0x00000000080A0000-0x000000000871A000-memory.dmp
      Filesize

      6.5MB

    • memory/3944-101-0x0000000074C40000-0x00000000753F0000-memory.dmp
      Filesize

      7.7MB

    • memory/3944-89-0x0000000007CD0000-0x0000000007D66000-memory.dmp
      Filesize

      600KB

    • memory/3944-90-0x0000000007C50000-0x0000000007C61000-memory.dmp
      Filesize

      68KB

    • memory/3944-64-0x00000000754D0000-0x000000007551C000-memory.dmp
      Filesize

      304KB

    • memory/3944-94-0x0000000007D70000-0x0000000007D78000-memory.dmp
      Filesize

      32KB

    • memory/3944-40-0x0000000074C40000-0x00000000753F0000-memory.dmp
      Filesize

      7.7MB

    • memory/5056-59-0x0000000005000000-0x000000000500A000-memory.dmp
      Filesize

      40KB

    • memory/5056-26-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/5056-62-0x0000000006180000-0x000000000618A000-memory.dmp
      Filesize

      40KB

    • memory/5056-61-0x00000000051C0000-0x00000000051DE000-memory.dmp
      Filesize

      120KB

    • memory/5056-60-0x0000000005010000-0x000000000501C000-memory.dmp
      Filesize

      48KB

    • memory/5056-104-0x0000000006790000-0x00000000067A2000-memory.dmp
      Filesize

      72KB

    • memory/5056-105-0x00000000067A0000-0x00000000067BA000-memory.dmp
      Filesize

      104KB

    • memory/5056-106-0x00000000067D0000-0x00000000067DE000-memory.dmp
      Filesize

      56KB

    • memory/5056-107-0x00000000067E0000-0x00000000067F2000-memory.dmp
      Filesize

      72KB

    • memory/5056-108-0x00000000067F0000-0x00000000067FE000-memory.dmp
      Filesize

      56KB

    • memory/5056-109-0x0000000006800000-0x000000000680C000-memory.dmp
      Filesize

      48KB

    • memory/5056-110-0x0000000006810000-0x0000000006824000-memory.dmp
      Filesize

      80KB

    • memory/5056-111-0x0000000006820000-0x0000000006830000-memory.dmp
      Filesize

      64KB

    • memory/5056-112-0x0000000006850000-0x0000000006864000-memory.dmp
      Filesize

      80KB

    • memory/5056-113-0x0000000006860000-0x000000000686E000-memory.dmp
      Filesize

      56KB

    • memory/5056-114-0x0000000006870000-0x000000000689E000-memory.dmp
      Filesize

      184KB

    • memory/5056-115-0x00000000068B0000-0x00000000068C4000-memory.dmp
      Filesize

      80KB