Analysis

  • max time kernel
    1200s
  • max time network
    1196s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-05-2024 10:39

General

  • Target

    63HiIJrDNvEfDcl.exe

  • Size

    660KB

  • MD5

    e47509572ea188a78326872fda99fe64

  • SHA1

    61445d5ea22042336963a7a1060e6049c5d52fc1

  • SHA256

    ef2c040076c60b1c9dbe49868b75a036073d4e3d4d9d20d911e0166ffe1317f5

  • SHA512

    98b9c9822008bff777797b4346df430fdb97516539b423984b709db878353cf4b8d20d53a1110507abafe94920468387f381e32f056493244f41ddbd37129c90

  • SSDEEP

    12288:nyLMnTWeLAfxcFnogLeYyyrto7lydPuDdiOSoKLZytl7eDhbMWz3E65qq9:fnTW5wiWto7HijovLKDKWa

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 16 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\63HiIJrDNvEfDcl.exe
    "C:\Users\Admin\AppData\Local\Temp\63HiIJrDNvEfDcl.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1712
    • 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\63HiIJrDNvEfDcl.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3000
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vrwJUPrQkQA.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3716
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vrwJUPrQkQA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9B84.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2792
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:3112
      • 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:4836
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "LAN Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA131.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:2348
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "LAN Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA3F2.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1620

    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\Temp\__PSScriptPolicyTest_nfhduvie.550.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp9B84.tmp
      Filesize

      1KB

      MD5

      e29b7c5241d7bf27d62653e9a0f31752

      SHA1

      3ba3dbe57591d61f9834817e370ae372735440ae

      SHA256

      4bf74d73e57006fb8158383b6da2e4835f5d5811a7b2f63acb99e8e503e5d5c4

      SHA512

      f1d9d65c89f1d6174997c5acbf8092d65b77e089e6fb7e5780c68e0aa38f36c99584baa9ec9318063d2de78170047ec62f726d2f818ca2a0521b28be0bb9e899

    • C:\Users\Admin\AppData\Local\Temp\tmpA131.tmp
      Filesize

      1KB

      MD5

      8cad1b41587ced0f1e74396794f31d58

      SHA1

      11054bf74fcf5e8e412768035e4dae43aa7b710f

      SHA256

      3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

      SHA512

      99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

    • C:\Users\Admin\AppData\Local\Temp\tmpA3F2.tmp
      Filesize

      1KB

      MD5

      ecf141ec69adbb2a5c3dd5c85cd0ec39

      SHA1

      0ad224632fa58d103142c05c44a142f3d7208291

      SHA256

      64d8cfa0b25afee269839cd5fc0b66e5643bc318e5f4d3ce1b9dba2456c83316

      SHA512

      4821b062d6672f3ed07833cfd7ab9abb533850b451b632d781fbfad8238fcd5ac52855f1f239547ae2d1c1477959f022430302a75cfd3c19a8473af72a1ef201

    • memory/1712-8-0x0000000006460000-0x0000000006470000-memory.dmp
      Filesize

      64KB

    • memory/1712-0-0x000000007458E000-0x000000007458F000-memory.dmp
      Filesize

      4KB

    • memory/1712-6-0x0000000005420000-0x00000000054BC000-memory.dmp
      Filesize

      624KB

    • memory/1712-7-0x0000000005680000-0x000000000569E000-memory.dmp
      Filesize

      120KB

    • memory/1712-4-0x0000000005330000-0x000000000533A000-memory.dmp
      Filesize

      40KB

    • memory/1712-9-0x0000000006590000-0x00000000065A6000-memory.dmp
      Filesize

      88KB

    • memory/1712-10-0x0000000007CF0000-0x0000000007D6C000-memory.dmp
      Filesize

      496KB

    • memory/1712-5-0x0000000074580000-0x0000000074D30000-memory.dmp
      Filesize

      7.7MB

    • memory/1712-16-0x000000007458E000-0x000000007458F000-memory.dmp
      Filesize

      4KB

    • memory/1712-3-0x00000000051A0000-0x0000000005232000-memory.dmp
      Filesize

      584KB

    • memory/1712-2-0x00000000056B0000-0x0000000005C54000-memory.dmp
      Filesize

      5.6MB

    • memory/1712-52-0x0000000074580000-0x0000000074D30000-memory.dmp
      Filesize

      7.7MB

    • memory/1712-37-0x0000000074580000-0x0000000074D30000-memory.dmp
      Filesize

      7.7MB

    • memory/1712-1-0x00000000006F0000-0x000000000079C000-memory.dmp
      Filesize

      688KB

    • memory/3000-76-0x0000000006AC0000-0x0000000006B63000-memory.dmp
      Filesize

      652KB

    • memory/3000-79-0x0000000004860000-0x000000000486A000-memory.dmp
      Filesize

      40KB

    • memory/3000-22-0x0000000004B00000-0x0000000004B22000-memory.dmp
      Filesize

      136KB

    • memory/3000-98-0x0000000074580000-0x0000000074D30000-memory.dmp
      Filesize

      7.7MB

    • memory/3000-24-0x0000000005440000-0x00000000054A6000-memory.dmp
      Filesize

      408KB

    • memory/3000-20-0x0000000074580000-0x0000000074D30000-memory.dmp
      Filesize

      7.7MB

    • memory/3000-94-0x0000000007160000-0x000000000717A000-memory.dmp
      Filesize

      104KB

    • memory/3000-92-0x0000000007050000-0x000000000705E000-memory.dmp
      Filesize

      56KB

    • memory/3000-91-0x0000000007020000-0x0000000007031000-memory.dmp
      Filesize

      68KB

    • memory/3000-48-0x0000000005AB0000-0x0000000005ACE000-memory.dmp
      Filesize

      120KB

    • memory/3000-90-0x00000000070A0000-0x0000000007136000-memory.dmp
      Filesize

      600KB

    • memory/3000-50-0x0000000005F20000-0x0000000005F6C000-memory.dmp
      Filesize

      304KB

    • memory/3000-19-0x0000000074580000-0x0000000074D30000-memory.dmp
      Filesize

      7.7MB

    • memory/3000-17-0x0000000004CF0000-0x0000000005318000-memory.dmp
      Filesize

      6.2MB

    • memory/3000-18-0x0000000074580000-0x0000000074D30000-memory.dmp
      Filesize

      7.7MB

    • memory/3000-23-0x00000000053D0000-0x0000000005436000-memory.dmp
      Filesize

      408KB

    • memory/3000-77-0x00000000074D0000-0x0000000007B4A000-memory.dmp
      Filesize

      6.5MB

    • memory/3000-78-0x0000000006BF0000-0x0000000006C0A000-memory.dmp
      Filesize

      104KB

    • memory/3000-65-0x000000006FAF0000-0x000000006FB3C000-memory.dmp
      Filesize

      304KB

    • memory/3000-64-0x0000000006080000-0x00000000060B2000-memory.dmp
      Filesize

      200KB

    • memory/3000-75-0x0000000006A90000-0x0000000006AAE000-memory.dmp
      Filesize

      120KB

    • memory/3000-15-0x00000000021F0000-0x0000000002226000-memory.dmp
      Filesize

      216KB

    • memory/3716-38-0x0000000074580000-0x0000000074D30000-memory.dmp
      Filesize

      7.7MB

    • memory/3716-80-0x000000006FAF0000-0x000000006FB3C000-memory.dmp
      Filesize

      304KB

    • memory/3716-35-0x0000000074580000-0x0000000074D30000-memory.dmp
      Filesize

      7.7MB

    • memory/3716-36-0x0000000005CB0000-0x0000000006004000-memory.dmp
      Filesize

      3.3MB

    • memory/3716-93-0x0000000007810000-0x0000000007824000-memory.dmp
      Filesize

      80KB

    • memory/3716-95-0x00000000078F0000-0x00000000078F8000-memory.dmp
      Filesize

      32KB

    • memory/3716-99-0x0000000074580000-0x0000000074D30000-memory.dmp
      Filesize

      7.7MB

    • memory/3716-25-0x0000000074580000-0x0000000074D30000-memory.dmp
      Filesize

      7.7MB

    • memory/4836-63-0x0000000005990000-0x000000000599A000-memory.dmp
      Filesize

      40KB

    • memory/4836-62-0x00000000051E0000-0x00000000051FE000-memory.dmp
      Filesize

      120KB

    • memory/4836-60-0x0000000004E20000-0x0000000004E2A000-memory.dmp
      Filesize

      40KB

    • memory/4836-49-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/4836-61-0x0000000004E30000-0x0000000004E3C000-memory.dmp
      Filesize

      48KB