Analysis

  • max time kernel
    140s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-05-2024 03:56

General

  • Target

    6WWUgqjTcGWPAyI.exe

  • Size

    697KB

  • MD5

    c4c93bc9f72bed159b6b2eba554d9ff9

  • SHA1

    5064d1765a61f37b166eccea7747d27e41332c67

  • SHA256

    62ce4e89f91a70f82f5a61bf76c4ab592982f761eef609bd7ea7b196f9415e83

  • SHA512

    d313f7791c09e47a832d0934a5e8875f580ac05c0d30f90263c4fa7dc6119cc6e34bdd328d2d1761f2fb82b318ebbacd64b656a5082724b4e181edc04290f409

  • SSDEEP

    12288:Fi0pei36RcXKEl4qS5e99HNkaMAU7Bv7zB8tbcCt4pJ:FFpp36+6EWRerNTnU7BT2lco4

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

december2n.duckdns.org:65140

december2nd.ddns.net:65140

Mutex

899d14c1-6714-492c-b745-3165bff717a5

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    december2nd.ddns.net

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2024-02-27T02:16:51.671967236Z

  • 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

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    899d14c1-6714-492c-b745-3165bff717a5

  • 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

    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 17 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6WWUgqjTcGWPAyI.exe
    "C:\Users\Admin\AppData\Local\Temp\6WWUgqjTcGWPAyI.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4044
    • 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\6WWUgqjTcGWPAyI.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3308
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\aJDyPjUKcXvqr.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4292
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aJDyPjUKcXvqr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA18F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4504
    • 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:3956
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA6DF.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2192
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA9AE.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4328

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_y45wfchz.h0r.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpA18F.tmp
    Filesize

    1KB

    MD5

    0587b98e281220cb1cd1320e7860a652

    SHA1

    45a2eb5d11c0dae6d1287141991c5df14f76c7c3

    SHA256

    fc10771bbb6d8578f707050c0c6290cc9bdecf468680c069455175d78572660e

    SHA512

    395b737ac9f26ac281ef7236b66fbb66c587660d498c1870a2e54ac1ab84ad1aab4d9774cb99f8f7f16dd5e6fb6c92d1cf86b9e14d41ad30350cb4e44ec837ff

  • C:\Users\Admin\AppData\Local\Temp\tmpA6DF.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmpA9AE.tmp
    Filesize

    1KB

    MD5

    5fea24e883e06e4df6d240dc72abf2c5

    SHA1

    d778bf0f436141e02df4b421e8188abdcc9a84a4

    SHA256

    e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66

    SHA512

    15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

  • memory/3308-20-0x00000000751F0000-0x00000000759A0000-memory.dmp
    Filesize

    7.7MB

  • memory/3308-46-0x00000000751F0000-0x00000000759A0000-memory.dmp
    Filesize

    7.7MB

  • memory/3308-77-0x0000000075A70000-0x0000000075ABC000-memory.dmp
    Filesize

    304KB

  • memory/3308-98-0x00000000751F0000-0x00000000759A0000-memory.dmp
    Filesize

    7.7MB

  • memory/3308-38-0x0000000005B00000-0x0000000005E54000-memory.dmp
    Filesize

    3.3MB

  • memory/3308-19-0x00000000751F0000-0x00000000759A0000-memory.dmp
    Filesize

    7.7MB

  • memory/3308-17-0x0000000005240000-0x0000000005868000-memory.dmp
    Filesize

    6.2MB

  • memory/3308-16-0x0000000002820000-0x0000000002856000-memory.dmp
    Filesize

    216KB

  • memory/3956-62-0x0000000005F40000-0x0000000005F5E000-memory.dmp
    Filesize

    120KB

  • memory/3956-102-0x0000000006A50000-0x0000000006A62000-memory.dmp
    Filesize

    72KB

  • memory/3956-110-0x0000000006B10000-0x0000000006B24000-memory.dmp
    Filesize

    80KB

  • memory/3956-109-0x0000000006B00000-0x0000000006B10000-memory.dmp
    Filesize

    64KB

  • memory/3956-103-0x0000000006A60000-0x0000000006A7A000-memory.dmp
    Filesize

    104KB

  • memory/3956-113-0x0000000006B70000-0x0000000006B84000-memory.dmp
    Filesize

    80KB

  • memory/3956-104-0x0000000006A90000-0x0000000006A9E000-memory.dmp
    Filesize

    56KB

  • memory/3956-106-0x0000000006AB0000-0x0000000006ABE000-memory.dmp
    Filesize

    56KB

  • memory/3956-112-0x0000000006B40000-0x0000000006B6E000-memory.dmp
    Filesize

    184KB

  • memory/3956-105-0x0000000006AA0000-0x0000000006AB2000-memory.dmp
    Filesize

    72KB

  • memory/3956-111-0x0000000006B30000-0x0000000006B3E000-memory.dmp
    Filesize

    56KB

  • memory/3956-60-0x0000000005020000-0x000000000502A000-memory.dmp
    Filesize

    40KB

  • memory/3956-47-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/3956-61-0x0000000005040000-0x000000000504C000-memory.dmp
    Filesize

    48KB

  • memory/3956-63-0x0000000005F60000-0x0000000005F6A000-memory.dmp
    Filesize

    40KB

  • memory/3956-107-0x0000000006AC0000-0x0000000006ACC000-memory.dmp
    Filesize

    48KB

  • memory/3956-108-0x0000000006AD0000-0x0000000006AE4000-memory.dmp
    Filesize

    80KB

  • memory/4044-11-0x00000000751FE000-0x00000000751FF000-memory.dmp
    Filesize

    4KB

  • memory/4044-8-0x00000000024D0000-0x00000000024E0000-memory.dmp
    Filesize

    64KB

  • memory/4044-2-0x0000000005240000-0x00000000057E4000-memory.dmp
    Filesize

    5.6MB

  • memory/4044-1-0x0000000000100000-0x00000000001B4000-memory.dmp
    Filesize

    720KB

  • memory/4044-10-0x0000000009C80000-0x0000000009D1C000-memory.dmp
    Filesize

    624KB

  • memory/4044-18-0x00000000751F0000-0x00000000759A0000-memory.dmp
    Filesize

    7.7MB

  • memory/4044-50-0x00000000751F0000-0x00000000759A0000-memory.dmp
    Filesize

    7.7MB

  • memory/4044-7-0x0000000009BD0000-0x0000000009BDC000-memory.dmp
    Filesize

    48KB

  • memory/4044-4-0x0000000004C50000-0x0000000004C5A000-memory.dmp
    Filesize

    40KB

  • memory/4044-5-0x00000000751F0000-0x00000000759A0000-memory.dmp
    Filesize

    7.7MB

  • memory/4044-3-0x0000000004BB0000-0x0000000004C42000-memory.dmp
    Filesize

    584KB

  • memory/4044-0-0x00000000751FE000-0x00000000751FF000-memory.dmp
    Filesize

    4KB

  • memory/4044-6-0x0000000004E50000-0x0000000004E72000-memory.dmp
    Filesize

    136KB

  • memory/4044-9-0x0000000006090000-0x000000000610C000-memory.dmp
    Filesize

    496KB

  • memory/4292-25-0x00000000751F0000-0x00000000759A0000-memory.dmp
    Filesize

    7.7MB

  • memory/4292-89-0x0000000007B00000-0x0000000007B0A000-memory.dmp
    Filesize

    40KB

  • memory/4292-90-0x0000000007D00000-0x0000000007D96000-memory.dmp
    Filesize

    600KB

  • memory/4292-91-0x0000000007C80000-0x0000000007C91000-memory.dmp
    Filesize

    68KB

  • memory/4292-92-0x0000000007CB0000-0x0000000007CBE000-memory.dmp
    Filesize

    56KB

  • memory/4292-93-0x0000000007CC0000-0x0000000007CD4000-memory.dmp
    Filesize

    80KB

  • memory/4292-94-0x0000000007DC0000-0x0000000007DDA000-memory.dmp
    Filesize

    104KB

  • memory/4292-95-0x0000000007DA0000-0x0000000007DA8000-memory.dmp
    Filesize

    32KB

  • memory/4292-99-0x00000000751F0000-0x00000000759A0000-memory.dmp
    Filesize

    7.7MB

  • memory/4292-88-0x0000000007A80000-0x0000000007A9A000-memory.dmp
    Filesize

    104KB

  • memory/4292-87-0x00000000080D0000-0x000000000874A000-memory.dmp
    Filesize

    6.5MB

  • memory/4292-76-0x0000000007750000-0x00000000077F3000-memory.dmp
    Filesize

    652KB

  • memory/4292-64-0x0000000007710000-0x0000000007742000-memory.dmp
    Filesize

    200KB

  • memory/4292-65-0x0000000075A70000-0x0000000075ABC000-memory.dmp
    Filesize

    304KB

  • memory/4292-75-0x00000000076F0000-0x000000000770E000-memory.dmp
    Filesize

    120KB

  • memory/4292-55-0x0000000006780000-0x00000000067CC000-memory.dmp
    Filesize

    304KB

  • memory/4292-51-0x0000000006760000-0x000000000677E000-memory.dmp
    Filesize

    120KB

  • memory/4292-49-0x00000000751F0000-0x00000000759A0000-memory.dmp
    Filesize

    7.7MB

  • memory/4292-21-0x0000000005780000-0x00000000057A2000-memory.dmp
    Filesize

    136KB

  • memory/4292-36-0x00000000751F0000-0x00000000759A0000-memory.dmp
    Filesize

    7.7MB

  • memory/4292-22-0x0000000005820000-0x0000000005886000-memory.dmp
    Filesize

    408KB

  • memory/4292-23-0x0000000005890000-0x00000000058F6000-memory.dmp
    Filesize

    408KB