Analysis

  • max time kernel
    146s
  • max time network
    158s
  • 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 08:37

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 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\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:4128
    • 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:2436
    • 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:1496
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA930.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1460
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:1348
      • 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:2920
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB0E1.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1576
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DHCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB612.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1708

    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

      bfd7e3c620a9398cceeec58248a93c21

      SHA1

      070813e1c6460c807c824d90e52aa3ce174fe540

      SHA256

      12021f81b9cb5d1c79072f5efece179cb45a02f04ec6c49b94e071122a0b9bde

      SHA512

      fcaec39b9fc82798c4ca87860b7f627249f45b6fa85b95263d9081ef99d22cf68434bb9ec4432744347f9a9d7c7e95c7436d7742801f9dc5fe55fda9e60211ef

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ax334whm.esv.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpA930.tmp
      Filesize

      1KB

      MD5

      b7304fae98f79cca9a46e35ea6295e70

      SHA1

      c5728f90dc7eac1d991beb6b145a15acffe88f4b

      SHA256

      5af6ba12665361e283e4affac08134f50e2a855aa0e901554d5d906acb375305

      SHA512

      4accba4d47714ddcd52d2cf33c5af476933ec4b47b1a871f35e4760c6a8ec77875149c6e8afa8f0f10a83ba0adf0a684fcaf545af8b9a2129018b12e94a582af

    • C:\Users\Admin\AppData\Local\Temp\tmpB0E1.tmp
      Filesize

      1KB

      MD5

      8cad1b41587ced0f1e74396794f31d58

      SHA1

      11054bf74fcf5e8e412768035e4dae43aa7b710f

      SHA256

      3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

      SHA512

      99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

    • C:\Users\Admin\AppData\Local\Temp\tmpB612.tmp
      Filesize

      1KB

      MD5

      a77c223a0fc492dccd6fb9975f7a8766

      SHA1

      5e813636ae9b8138d78919348a5da3a6e8bd74b5

      SHA256

      589df7325d42409c50827600fedb240171ee4bdab85916474a37800c2382829e

      SHA512

      315cea8fde3c594404f5d3c96c710af1214cff6d08ccdb40634a739e108ff810e02624735a2b8c3e3720157b4a55327f317c3c23c3a681b46b9ab0f19060f7c0

    • memory/1496-92-0x0000000007DB0000-0x0000000007DC4000-memory.dmp
      Filesize

      80KB

    • memory/1496-74-0x0000000006E00000-0x0000000006E1E000-memory.dmp
      Filesize

      120KB

    • memory/1496-90-0x0000000007D70000-0x0000000007D81000-memory.dmp
      Filesize

      68KB

    • memory/1496-89-0x0000000007DF0000-0x0000000007E86000-memory.dmp
      Filesize

      600KB

    • memory/1496-88-0x0000000007BE0000-0x0000000007BEA000-memory.dmp
      Filesize

      40KB

    • memory/1496-77-0x0000000007B70000-0x0000000007B8A000-memory.dmp
      Filesize

      104KB

    • memory/1496-76-0x00000000081B0000-0x000000000882A000-memory.dmp
      Filesize

      6.5MB

    • memory/1496-75-0x0000000007A30000-0x0000000007AD3000-memory.dmp
      Filesize

      652KB

    • memory/1496-64-0x0000000074CB0000-0x0000000074CFC000-memory.dmp
      Filesize

      304KB

    • memory/1496-91-0x0000000007DA0000-0x0000000007DAE000-memory.dmp
      Filesize

      56KB

    • memory/1496-63-0x0000000006E40000-0x0000000006E72000-memory.dmp
      Filesize

      200KB

    • memory/1496-22-0x0000000074400000-0x0000000074BB0000-memory.dmp
      Filesize

      7.7MB

    • memory/1496-50-0x0000000006840000-0x000000000685E000-memory.dmp
      Filesize

      120KB

    • memory/1496-26-0x0000000074400000-0x0000000074BB0000-memory.dmp
      Filesize

      7.7MB

    • memory/1496-27-0x0000000074400000-0x0000000074BB0000-memory.dmp
      Filesize

      7.7MB

    • memory/1496-93-0x0000000007EB0000-0x0000000007ECA000-memory.dmp
      Filesize

      104KB

    • memory/1496-94-0x0000000007E90000-0x0000000007E98000-memory.dmp
      Filesize

      32KB

    • memory/1496-100-0x0000000074400000-0x0000000074BB0000-memory.dmp
      Filesize

      7.7MB

    • memory/1496-51-0x0000000006BA0000-0x0000000006BEC000-memory.dmp
      Filesize

      304KB

    • memory/2436-18-0x0000000005BA0000-0x00000000061C8000-memory.dmp
      Filesize

      6.2MB

    • memory/2436-20-0x0000000074400000-0x0000000074BB0000-memory.dmp
      Filesize

      7.7MB

    • memory/2436-101-0x0000000074400000-0x0000000074BB0000-memory.dmp
      Filesize

      7.7MB

    • memory/2436-24-0x0000000005970000-0x00000000059D6000-memory.dmp
      Filesize

      408KB

    • memory/2436-78-0x0000000074CB0000-0x0000000074CFC000-memory.dmp
      Filesize

      304KB

    • memory/2436-28-0x00000000062D0000-0x0000000006624000-memory.dmp
      Filesize

      3.3MB

    • memory/2436-25-0x0000000005B10000-0x0000000005B76000-memory.dmp
      Filesize

      408KB

    • memory/2436-16-0x0000000002F70000-0x0000000002FA6000-memory.dmp
      Filesize

      216KB

    • memory/2436-23-0x00000000057D0000-0x00000000057F2000-memory.dmp
      Filesize

      136KB

    • memory/2436-19-0x0000000074400000-0x0000000074BB0000-memory.dmp
      Filesize

      7.7MB

    • memory/2920-61-0x0000000005150000-0x000000000516E000-memory.dmp
      Filesize

      120KB

    • memory/2920-59-0x0000000004FA0000-0x0000000004FAA000-memory.dmp
      Filesize

      40KB

    • memory/2920-60-0x0000000005140000-0x000000000514C000-memory.dmp
      Filesize

      48KB

    • memory/2920-62-0x0000000006010000-0x000000000601A000-memory.dmp
      Filesize

      40KB

    • memory/2920-47-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/4128-9-0x0000000006CA0000-0x0000000006D1C000-memory.dmp
      Filesize

      496KB

    • memory/4128-6-0x0000000005970000-0x000000000598E000-memory.dmp
      Filesize

      120KB

    • memory/4128-17-0x0000000074400000-0x0000000074BB0000-memory.dmp
      Filesize

      7.7MB

    • memory/4128-10-0x00000000092D0000-0x000000000936C000-memory.dmp
      Filesize

      624KB

    • memory/4128-0-0x000000007440E000-0x000000007440F000-memory.dmp
      Filesize

      4KB

    • memory/4128-8-0x00000000059F0000-0x0000000005A06000-memory.dmp
      Filesize

      88KB

    • memory/4128-7-0x00000000059C0000-0x00000000059D0000-memory.dmp
      Filesize

      64KB

    • memory/4128-14-0x000000007440E000-0x000000007440F000-memory.dmp
      Filesize

      4KB

    • memory/4128-5-0x0000000074400000-0x0000000074BB0000-memory.dmp
      Filesize

      7.7MB

    • memory/4128-4-0x00000000056A0000-0x00000000056AA000-memory.dmp
      Filesize

      40KB

    • memory/4128-3-0x00000000056F0000-0x0000000005782000-memory.dmp
      Filesize

      584KB

    • memory/4128-2-0x0000000005C00000-0x00000000061A4000-memory.dmp
      Filesize

      5.6MB

    • memory/4128-49-0x0000000074400000-0x0000000074BB0000-memory.dmp
      Filesize

      7.7MB

    • memory/4128-1-0x0000000000BA0000-0x0000000000C92000-memory.dmp
      Filesize

      968KB