Analysis

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

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-05-2024 08:31

General

  • Target

    ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe

  • Size

    945KB

  • MD5

    a1f6c95a377a8c4c194a018614a6b463

  • SHA1

    cd8ce511a2ac57aec39892c0b27832a18e77fc39

  • SHA256

    ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c

  • SHA512

    fb93341612485022964338a421fbf6a77876d1efc492307e18a4fa28354643f8675cf685847ee8ffc9315232449f1c6b8aab674bb2beb0dc5e14ca6e020510a5

  • SSDEEP

    12288:gI0MYBl4BwkivLUyyqexCwG879IO0MgsaQ/nsy9LHr24HwmU3V50:50MYfMweyTivP7yO7aQ/nsWRQJV5

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 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\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe
    "C:\Users\Admin\AppData\Local\Temp\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1952
    • 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\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:864
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fupTmRCVq.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4244
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8FEC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3564
    • 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:8
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp93D4.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3008
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp952C.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4188

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

    514de77084167120423070e4d451410b

    SHA1

    9a811a8ceb01d4d20c35c6e8a0ada68aa23af69b

    SHA256

    642b2e62afa52b7ec01e7c4a50a6e87049d87d57b390d77e51eeb1456467c8e1

    SHA512

    cda7dfb3a6c9be24f7ca126004998c5327a80ace6de50e2899896c321bb850efde1717574193400bd99f1d2b0aef52cf2fbeaaf82a9fd69670d6ab7bcabecd77

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kmgulzhf.w5s.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp8FEC.tmp
    Filesize

    1KB

    MD5

    0378c312f7d2deb7c030c4cdb513d1cb

    SHA1

    e01d5a905e0918c8880dfe073424e1f036f1090b

    SHA256

    6ed5b5d5c56b13f60aee89982a603dbb716d5d0ed3b413f815f808be1e735b87

    SHA512

    dadaea97a3cf110024a21bbade4c09e8ec3cc1013edb7ead706f02a3315fc4f1433d6e193a5d5d1eb5ea9434be093880f85c02cf25719893e755861e177ac38c

  • C:\Users\Admin\AppData\Local\Temp\tmp93D4.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmp952C.tmp
    Filesize

    1KB

    MD5

    0d6d94a917c4ce63da6bc50cbbe0dc5d

    SHA1

    599564f60649f3f4c14478e9cb184000d4280a61

    SHA256

    e82a4b8311319f1b68cb06ae5b670e97a11c467b1bdb0ebf130f523bf98ca522

    SHA512

    23ac6a088e2a1df3d75d2aca17cdcc5a4147b966758e4acc4d904293f4693f362db637d8135edd670e158bec77e788e915f2a55042a2f1aec09a4679bc749412

  • memory/8-63-0x0000000006740000-0x000000000674A000-memory.dmp
    Filesize

    40KB

  • memory/8-61-0x00000000055A0000-0x00000000055AC000-memory.dmp
    Filesize

    48KB

  • memory/8-62-0x0000000005770000-0x000000000578E000-memory.dmp
    Filesize

    120KB

  • memory/8-60-0x0000000005580000-0x000000000558A000-memory.dmp
    Filesize

    40KB

  • memory/8-37-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/864-36-0x0000000005FB0000-0x0000000006304000-memory.dmp
    Filesize

    3.3MB

  • memory/864-23-0x00000000057A0000-0x00000000057C2000-memory.dmp
    Filesize

    136KB

  • memory/864-17-0x0000000005830000-0x0000000005E58000-memory.dmp
    Filesize

    6.2MB

  • memory/864-18-0x0000000075070000-0x0000000075820000-memory.dmp
    Filesize

    7.7MB

  • memory/864-19-0x0000000075070000-0x0000000075820000-memory.dmp
    Filesize

    7.7MB

  • memory/864-20-0x0000000075070000-0x0000000075820000-memory.dmp
    Filesize

    7.7MB

  • memory/864-88-0x0000000007890000-0x00000000078AA000-memory.dmp
    Filesize

    104KB

  • memory/864-15-0x0000000002C30000-0x0000000002C66000-memory.dmp
    Filesize

    216KB

  • memory/864-24-0x0000000005ED0000-0x0000000005F36000-memory.dmp
    Filesize

    408KB

  • memory/864-101-0x0000000075070000-0x0000000075820000-memory.dmp
    Filesize

    7.7MB

  • memory/864-25-0x0000000005F40000-0x0000000005FA6000-memory.dmp
    Filesize

    408KB

  • memory/864-91-0x0000000007A90000-0x0000000007AA1000-memory.dmp
    Filesize

    68KB

  • memory/864-92-0x0000000007AC0000-0x0000000007ACE000-memory.dmp
    Filesize

    56KB

  • memory/864-94-0x0000000007BD0000-0x0000000007BEA000-memory.dmp
    Filesize

    104KB

  • memory/864-95-0x0000000007BB0000-0x0000000007BB8000-memory.dmp
    Filesize

    32KB

  • memory/864-93-0x0000000007AD0000-0x0000000007AE4000-memory.dmp
    Filesize

    80KB

  • memory/864-68-0x0000000071720000-0x000000007176C000-memory.dmp
    Filesize

    304KB

  • memory/864-90-0x0000000007B10000-0x0000000007BA6000-memory.dmp
    Filesize

    600KB

  • memory/864-53-0x0000000006550000-0x000000000656E000-memory.dmp
    Filesize

    120KB

  • memory/864-54-0x0000000006590000-0x00000000065DC000-memory.dmp
    Filesize

    304KB

  • memory/1952-50-0x0000000075070000-0x0000000075820000-memory.dmp
    Filesize

    7.7MB

  • memory/1952-7-0x0000000005870000-0x0000000005880000-memory.dmp
    Filesize

    64KB

  • memory/1952-6-0x0000000005820000-0x000000000583E000-memory.dmp
    Filesize

    120KB

  • memory/1952-4-0x0000000075070000-0x0000000075820000-memory.dmp
    Filesize

    7.7MB

  • memory/1952-5-0x0000000005260000-0x000000000526A000-memory.dmp
    Filesize

    40KB

  • memory/1952-3-0x00000000052D0000-0x0000000005362000-memory.dmp
    Filesize

    584KB

  • memory/1952-8-0x0000000006550000-0x0000000006566000-memory.dmp
    Filesize

    88KB

  • memory/1952-2-0x0000000005880000-0x0000000005E24000-memory.dmp
    Filesize

    5.6MB

  • memory/1952-0-0x000000007507E000-0x000000007507F000-memory.dmp
    Filesize

    4KB

  • memory/1952-9-0x0000000006870000-0x00000000068EC000-memory.dmp
    Filesize

    496KB

  • memory/1952-38-0x0000000075070000-0x0000000075820000-memory.dmp
    Filesize

    7.7MB

  • memory/1952-10-0x0000000008EB0000-0x0000000008F4C000-memory.dmp
    Filesize

    624KB

  • memory/1952-16-0x000000007507E000-0x000000007507F000-memory.dmp
    Filesize

    4KB

  • memory/1952-1-0x00000000008A0000-0x0000000000992000-memory.dmp
    Filesize

    968KB

  • memory/4244-32-0x0000000075070000-0x0000000075820000-memory.dmp
    Filesize

    7.7MB

  • memory/4244-89-0x0000000007D10000-0x0000000007D1A000-memory.dmp
    Filesize

    40KB

  • memory/4244-87-0x00000000082E0000-0x000000000895A000-memory.dmp
    Filesize

    6.5MB

  • memory/4244-64-0x00000000078F0000-0x0000000007922000-memory.dmp
    Filesize

    200KB

  • memory/4244-65-0x0000000071720000-0x000000007176C000-memory.dmp
    Filesize

    304KB

  • memory/4244-76-0x0000000007B30000-0x0000000007B4E000-memory.dmp
    Filesize

    120KB

  • memory/4244-102-0x0000000075070000-0x0000000075820000-memory.dmp
    Filesize

    7.7MB

  • memory/4244-86-0x0000000007B60000-0x0000000007C03000-memory.dmp
    Filesize

    652KB

  • memory/4244-48-0x0000000075070000-0x0000000075820000-memory.dmp
    Filesize

    7.7MB

  • memory/4244-21-0x0000000075070000-0x0000000075820000-memory.dmp
    Filesize

    7.7MB