Analysis

  • max time kernel
    133s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-08-2024 06:46

General

  • Target

    7Dh9pl21mjWDN3A.exe

  • Size

    670KB

  • MD5

    b40a08e60b9b7a3504d142c07ba18f2f

  • SHA1

    786e1981e4109f32da5b5c93221a3b9e8669046a

  • SHA256

    0211ec291040f1e5ada7c762b20df963381cae88923e3f103d588a382d3a19f3

  • SHA512

    7beea84ee5405da69039fd36819f73e8165d1eebdaa8df97552495556969d9a1b7c57cc81c566c91c006ab1a288e828dde1dd7c0dca819c9e05f47bbe19a1876

  • SSDEEP

    12288:/nxa/zmcDXmuUMtKeYSsz0NEFx8HnzNN6YZ/g5DO0lD9GIbzH:/nxaakuMsetszEELwnzTFG5flD9rL

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

december2n.duckdns.org:65140

december2nd.ddns.net:65140

Mutex

5e26ab75-1b3f-4c8b-a159-3a61aeef3310

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    december2nd.ddns.net

  • backup_dns_server

  • buffer_size

    65538

  • build_time

    2024-05-07T02:47:09.586481736Z

  • 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

    65140

  • 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

    5e26ab75-1b3f-4c8b-a159-3a61aeef3310

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    december2n.duckdns.org

  • 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

    8009

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 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).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7Dh9pl21mjWDN3A.exe
    "C:\Users\Admin\AppData\Local\Temp\7Dh9pl21mjWDN3A.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mzHFviYTm.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2320
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mzHFviYTm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFCBF.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3016
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:2844
      • 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
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3020
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "WAN Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFFAD.tmp"
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3244
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "WAN Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFFEC.tmp"
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1308

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1ivkdmbs.dnk.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      1KB

      MD5

      8060a0211a6df52ac8692b075e24baaf

      SHA1

      e0b781ca19823e3c4fb13097c201d593a7188c88

      SHA256

      50488055cf2debee879ec84eef3417f751844e970eb9fc87d8deba3c7197122a

      SHA512

      51e95ba0cb8aff9828282bd5146f86ab8312861dd0f25cbba27c375f6078e46fd4af7d8303f2778804b86895f19403af863636e6b2e4c8b2bce819f6795d3b74

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

      Filesize

      1KB

      MD5

      8cad1b41587ced0f1e74396794f31d58

      SHA1

      11054bf74fcf5e8e412768035e4dae43aa7b710f

      SHA256

      3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

      SHA512

      99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

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

      Filesize

      1KB

      MD5

      02783aa0d9a1a2104300bdd910c9b6dc

      SHA1

      0c8409582f9e606183eca539cc493d82983a0fb0

      SHA256

      59a13383f0495d96e868a7f41557d17f5afe15ce5548d7cc6c7501f6095f68fb

      SHA512

      11ef8bceddd6c0dc0ecec3e5bfbabba4595368b8b9be01a38ccbeaa509b7f99960fea6bbd83a37ea9807f79a5db08cdba1ec8ac85443ffdc3c0f204760153854

    • memory/2000-4-0x0000000005440000-0x000000000544A000-memory.dmp

      Filesize

      40KB

    • memory/2000-5-0x0000000074410000-0x0000000074BC0000-memory.dmp

      Filesize

      7.7MB

    • memory/2000-6-0x0000000006CC0000-0x0000000006CD8000-memory.dmp

      Filesize

      96KB

    • memory/2000-7-0x0000000006640000-0x000000000664E000-memory.dmp

      Filesize

      56KB

    • memory/2000-8-0x0000000006660000-0x0000000006676000-memory.dmp

      Filesize

      88KB

    • memory/2000-9-0x0000000009230000-0x00000000092AC000-memory.dmp

      Filesize

      496KB

    • memory/2000-10-0x0000000009040000-0x00000000090DC000-memory.dmp

      Filesize

      624KB

    • memory/2000-28-0x0000000074410000-0x0000000074BC0000-memory.dmp

      Filesize

      7.7MB

    • memory/2000-3-0x0000000005470000-0x0000000005502000-memory.dmp

      Filesize

      584KB

    • memory/2000-17-0x000000007441E000-0x000000007441F000-memory.dmp

      Filesize

      4KB

    • memory/2000-2-0x0000000005980000-0x0000000005F24000-memory.dmp

      Filesize

      5.6MB

    • memory/2000-1-0x00000000009A0000-0x0000000000A4E000-memory.dmp

      Filesize

      696KB

    • memory/2000-0-0x000000007441E000-0x000000007441F000-memory.dmp

      Filesize

      4KB

    • memory/2320-22-0x00000000059B0000-0x0000000005A16000-memory.dmp

      Filesize

      408KB

    • memory/2320-50-0x0000000006920000-0x000000000693E000-memory.dmp

      Filesize

      120KB

    • memory/2320-21-0x0000000005890000-0x00000000058B2000-memory.dmp

      Filesize

      136KB

    • memory/2320-24-0x0000000074410000-0x0000000074BC0000-memory.dmp

      Filesize

      7.7MB

    • memory/2320-27-0x00000000062A0000-0x00000000065F4000-memory.dmp

      Filesize

      3.3MB

    • memory/2320-76-0x0000000074410000-0x0000000074BC0000-memory.dmp

      Filesize

      7.7MB

    • memory/2320-26-0x0000000074410000-0x0000000074BC0000-memory.dmp

      Filesize

      7.7MB

    • memory/2320-73-0x0000000007F70000-0x0000000007F78000-memory.dmp

      Filesize

      32KB

    • memory/2320-19-0x0000000074410000-0x0000000074BC0000-memory.dmp

      Filesize

      7.7MB

    • memory/2320-18-0x0000000005B00000-0x0000000006128000-memory.dmp

      Filesize

      6.2MB

    • memory/2320-15-0x0000000005350000-0x0000000005386000-memory.dmp

      Filesize

      216KB

    • memory/2320-72-0x0000000007F90000-0x0000000007FAA000-memory.dmp

      Filesize

      104KB

    • memory/2320-70-0x0000000007E80000-0x0000000007E8E000-memory.dmp

      Filesize

      56KB

    • memory/2320-71-0x0000000007E90000-0x0000000007EA4000-memory.dmp

      Filesize

      80KB

    • memory/2320-69-0x0000000007E50000-0x0000000007E61000-memory.dmp

      Filesize

      68KB

    • memory/2320-23-0x0000000006230000-0x0000000006296000-memory.dmp

      Filesize

      408KB

    • memory/2320-51-0x0000000006950000-0x000000000699C000-memory.dmp

      Filesize

      304KB

    • memory/2320-52-0x0000000006F00000-0x0000000006F32000-memory.dmp

      Filesize

      200KB

    • memory/2320-63-0x0000000006EC0000-0x0000000006EDE000-memory.dmp

      Filesize

      120KB

    • memory/2320-53-0x0000000070310000-0x000000007035C000-memory.dmp

      Filesize

      304KB

    • memory/2320-64-0x0000000007B30000-0x0000000007BD3000-memory.dmp

      Filesize

      652KB

    • memory/2320-66-0x0000000007C50000-0x0000000007C6A000-memory.dmp

      Filesize

      104KB

    • memory/2320-65-0x0000000008290000-0x000000000890A000-memory.dmp

      Filesize

      6.5MB

    • memory/2320-67-0x0000000007CC0000-0x0000000007CCA000-memory.dmp

      Filesize

      40KB

    • memory/2320-68-0x0000000007ED0000-0x0000000007F66000-memory.dmp

      Filesize

      600KB

    • memory/3020-49-0x0000000005AD0000-0x0000000005ADA000-memory.dmp

      Filesize

      40KB

    • memory/3020-47-0x0000000005580000-0x000000000558C000-memory.dmp

      Filesize

      48KB

    • memory/3020-48-0x00000000055D0000-0x00000000055EE000-memory.dmp

      Filesize

      120KB

    • memory/3020-46-0x0000000005590000-0x000000000559A000-memory.dmp

      Filesize

      40KB

    • memory/3020-20-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/3020-29-0x0000000074410000-0x0000000074BC0000-memory.dmp

      Filesize

      7.7MB

    • memory/3020-77-0x0000000074410000-0x0000000074BC0000-memory.dmp

      Filesize

      7.7MB