Analysis

  • max time kernel
    149s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-05-2024 08:29

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 14 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:4364
    • 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:2808
    • 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:3200
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9FBA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4508
    • 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:4616
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA3D1.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3400
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA440.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3444

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    18KB

    MD5

    35a8ffe4ab669ce2b484d47fea3a2a02

    SHA1

    8ae732b508476907817f79369601dff12e89e906

    SHA256

    473d8fd9cf5141075b1973373e3503533d2b8ce28d3d1d80cb68ac755ecaf8bd

    SHA512

    c9910bb66bed21ee589a493e5108b47658c3893b7dd8afe2ad35e660409a777e6940f2000d0b3cea02f7dd03d1cc624d62e58af74c3bff65156f5cee5a96f7ea

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ewbyobhy.yox.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp9FBA.tmp

    Filesize

    1KB

    MD5

    b7304fae98f79cca9a46e35ea6295e70

    SHA1

    c5728f90dc7eac1d991beb6b145a15acffe88f4b

    SHA256

    5af6ba12665361e283e4affac08134f50e2a855aa0e901554d5d906acb375305

    SHA512

    4accba4d47714ddcd52d2cf33c5af476933ec4b47b1a871f35e4760c6a8ec77875149c6e8afa8f0f10a83ba0adf0a684fcaf545af8b9a2129018b12e94a582af

  • C:\Users\Admin\AppData\Local\Temp\tmpA3D1.tmp

    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmpA440.tmp

    Filesize

    1KB

    MD5

    a77c223a0fc492dccd6fb9975f7a8766

    SHA1

    5e813636ae9b8138d78919348a5da3a6e8bd74b5

    SHA256

    589df7325d42409c50827600fedb240171ee4bdab85916474a37800c2382829e

    SHA512

    315cea8fde3c594404f5d3c96c710af1214cff6d08ccdb40634a739e108ff810e02624735a2b8c3e3720157b4a55327f317c3c23c3a681b46b9ab0f19060f7c0

  • memory/2808-27-0x0000000006030000-0x0000000006384000-memory.dmp

    Filesize

    3.3MB

  • memory/2808-84-0x0000000007750000-0x000000000776A000-memory.dmp

    Filesize

    104KB

  • memory/2808-90-0x0000000007CA0000-0x0000000007CBA000-memory.dmp

    Filesize

    104KB

  • memory/2808-54-0x0000000006A90000-0x0000000006ADC000-memory.dmp

    Filesize

    304KB

  • memory/2808-89-0x0000000007BA0000-0x0000000007BB4000-memory.dmp

    Filesize

    80KB

  • memory/2808-86-0x0000000007BE0000-0x0000000007C76000-memory.dmp

    Filesize

    600KB

  • memory/2808-17-0x00007FF867BF0000-0x00007FF867DE5000-memory.dmp

    Filesize

    2.0MB

  • memory/2808-83-0x0000000008070000-0x00000000086EA000-memory.dmp

    Filesize

    6.5MB

  • memory/2808-15-0x0000000002D40000-0x0000000002D76000-memory.dmp

    Filesize

    216KB

  • memory/2808-18-0x00007FF867BF0000-0x00007FF867DE5000-memory.dmp

    Filesize

    2.0MB

  • memory/2808-19-0x00000000058B0000-0x0000000005ED8000-memory.dmp

    Filesize

    6.2MB

  • memory/2808-82-0x0000000007620000-0x00000000076C3000-memory.dmp

    Filesize

    652KB

  • memory/2808-77-0x0000000006BD0000-0x0000000006BEE000-memory.dmp

    Filesize

    120KB

  • memory/2808-22-0x0000000005880000-0x00000000058A2000-memory.dmp

    Filesize

    136KB

  • memory/2808-23-0x0000000005F50000-0x0000000005FB6000-memory.dmp

    Filesize

    408KB

  • memory/2808-24-0x0000000005FC0000-0x0000000006026000-memory.dmp

    Filesize

    408KB

  • memory/2808-60-0x0000000006BF0000-0x0000000006C22000-memory.dmp

    Filesize

    200KB

  • memory/2808-61-0x0000000075850000-0x000000007589C000-memory.dmp

    Filesize

    304KB

  • memory/2808-96-0x00007FF867BF0000-0x00007FF867DE5000-memory.dmp

    Filesize

    2.0MB

  • memory/2808-53-0x0000000006640000-0x000000000665E000-memory.dmp

    Filesize

    120KB

  • memory/3200-62-0x0000000075850000-0x000000007589C000-memory.dmp

    Filesize

    304KB

  • memory/3200-21-0x00007FF867BF0000-0x00007FF867DE5000-memory.dmp

    Filesize

    2.0MB

  • memory/3200-91-0x0000000007110000-0x0000000007118000-memory.dmp

    Filesize

    32KB

  • memory/3200-88-0x0000000007020000-0x000000000702E000-memory.dmp

    Filesize

    56KB

  • memory/3200-87-0x0000000006FF0000-0x0000000007001000-memory.dmp

    Filesize

    68KB

  • memory/3200-85-0x0000000006E60000-0x0000000006E6A000-memory.dmp

    Filesize

    40KB

  • memory/3200-97-0x00007FF867BF0000-0x00007FF867DE5000-memory.dmp

    Filesize

    2.0MB

  • memory/4364-0-0x00007FF867BF0000-0x00007FF867DE5000-memory.dmp

    Filesize

    2.0MB

  • memory/4364-10-0x0000000008770000-0x000000000880C000-memory.dmp

    Filesize

    624KB

  • memory/4364-5-0x0000000004D00000-0x0000000004D0A000-memory.dmp

    Filesize

    40KB

  • memory/4364-2-0x00000000051C0000-0x0000000005764000-memory.dmp

    Filesize

    5.6MB

  • memory/4364-1-0x0000000000070000-0x0000000000162000-memory.dmp

    Filesize

    968KB

  • memory/4364-3-0x0000000004B50000-0x0000000004BE2000-memory.dmp

    Filesize

    584KB

  • memory/4364-8-0x00000000051B0000-0x00000000051C6000-memory.dmp

    Filesize

    88KB

  • memory/4364-6-0x0000000004F40000-0x0000000004F5E000-memory.dmp

    Filesize

    120KB

  • memory/4364-16-0x00007FF867BF0000-0x00007FF867DE5000-memory.dmp

    Filesize

    2.0MB

  • memory/4364-7-0x00000000051A0000-0x00000000051B0000-memory.dmp

    Filesize

    64KB

  • memory/4364-4-0x00007FF867BF0000-0x00007FF867DE5000-memory.dmp

    Filesize

    2.0MB

  • memory/4364-28-0x00007FF867BF0000-0x00007FF867DE5000-memory.dmp

    Filesize

    2.0MB

  • memory/4364-9-0x00000000061E0000-0x000000000625C000-memory.dmp

    Filesize

    496KB

  • memory/4616-56-0x0000000005200000-0x000000000520A000-memory.dmp

    Filesize

    40KB

  • memory/4616-59-0x0000000005730000-0x000000000573A000-memory.dmp

    Filesize

    40KB

  • memory/4616-58-0x0000000005410000-0x000000000542E000-memory.dmp

    Filesize

    120KB

  • memory/4616-57-0x0000000005210000-0x000000000521C000-memory.dmp

    Filesize

    48KB

  • memory/4616-25-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB