Analysis

  • max time kernel
    147s
  • max time network
    152s
  • 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 08:38

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

    PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+

  • 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:1508
    • 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:5080
    • 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:544
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA4FA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1916
    • 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:4524
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAB44.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3684
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAF7B.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4688

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

    3d6a37dc3c9d8e86cc876be7a8f3d648

    SHA1

    2c97cd13d34488a987ebd65e28271d19e7be4d1a

    SHA256

    1ac3d2f41086fffa4fe6db1356191780fec121d9ac691b75cfdc23067783ad8f

    SHA512

    74d50c0c80019366581b20c4fbf60989060b81904ff53b66c9591d7a90869edc0a98b30038fee7c34f012da246271ea7576acd1a98ba2c386c492df4b89cdac6

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5urkz10y.i5h.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpA4FA.tmp
    Filesize

    1KB

    MD5

    f7c5ed2cd473833b154217a52a430c51

    SHA1

    589d8d69330ed81aa7eab30717f4c384b80774c6

    SHA256

    f52d3cb7276344ea53186879470ef28cd1bd72838d711ec9630fe8c45a887cab

    SHA512

    9cd86b088fe15999de8a6027b379cd5a4c75267ee867fbaa01b52ae1a0a1bef099932bf7998a329c3721adc264f804b66581c23b1f42e65b2abcb9cb7478fd9a

  • C:\Users\Admin\AppData\Local\Temp\tmpAB44.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmpAF7B.tmp
    Filesize

    1KB

    MD5

    5fea24e883e06e4df6d240dc72abf2c5

    SHA1

    d778bf0f436141e02df4b421e8188abdcc9a84a4

    SHA256

    e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66

    SHA512

    15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

  • memory/544-86-0x0000000007650000-0x00000000076F3000-memory.dmp
    Filesize

    652KB

  • memory/544-92-0x0000000007BC0000-0x0000000007BCE000-memory.dmp
    Filesize

    56KB

  • memory/544-89-0x0000000007A00000-0x0000000007A0A000-memory.dmp
    Filesize

    40KB

  • memory/544-75-0x0000000006C20000-0x0000000006C3E000-memory.dmp
    Filesize

    120KB

  • memory/544-25-0x0000000006050000-0x00000000060B6000-memory.dmp
    Filesize

    408KB

  • memory/544-64-0x0000000007610000-0x0000000007642000-memory.dmp
    Filesize

    200KB

  • memory/544-65-0x0000000071010000-0x000000007105C000-memory.dmp
    Filesize

    304KB

  • memory/544-91-0x0000000007B90000-0x0000000007BA1000-memory.dmp
    Filesize

    68KB

  • memory/544-93-0x0000000007BD0000-0x0000000007BE4000-memory.dmp
    Filesize

    80KB

  • memory/544-52-0x00000000066A0000-0x00000000066EC000-memory.dmp
    Filesize

    304KB

  • memory/544-20-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/544-95-0x0000000007CB0000-0x0000000007CB8000-memory.dmp
    Filesize

    32KB

  • memory/544-51-0x0000000006680000-0x000000000669E000-memory.dmp
    Filesize

    120KB

  • memory/544-32-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/544-49-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/544-101-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/1508-50-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/1508-5-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/1508-1-0x00000000005C0000-0x00000000006B2000-memory.dmp
    Filesize

    968KB

  • memory/1508-2-0x0000000005610000-0x0000000005BB4000-memory.dmp
    Filesize

    5.6MB

  • memory/1508-10-0x0000000008CD0000-0x0000000008D6C000-memory.dmp
    Filesize

    624KB

  • memory/1508-0-0x000000007482E000-0x000000007482F000-memory.dmp
    Filesize

    4KB

  • memory/1508-3-0x0000000005100000-0x0000000005192000-memory.dmp
    Filesize

    584KB

  • memory/1508-22-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/1508-4-0x00000000050C0000-0x00000000050CA000-memory.dmp
    Filesize

    40KB

  • memory/1508-9-0x0000000006730000-0x00000000067AC000-memory.dmp
    Filesize

    496KB

  • memory/1508-6-0x0000000005490000-0x00000000054AE000-memory.dmp
    Filesize

    120KB

  • memory/1508-8-0x00000000054F0000-0x0000000005506000-memory.dmp
    Filesize

    88KB

  • memory/1508-7-0x00000000054E0000-0x00000000054F0000-memory.dmp
    Filesize

    64KB

  • memory/1508-16-0x000000007482E000-0x000000007482F000-memory.dmp
    Filesize

    4KB

  • memory/4524-61-0x00000000053C0000-0x00000000053CC000-memory.dmp
    Filesize

    48KB

  • memory/4524-63-0x0000000006520000-0x000000000652A000-memory.dmp
    Filesize

    40KB

  • memory/4524-62-0x0000000005620000-0x000000000563E000-memory.dmp
    Filesize

    120KB

  • memory/4524-60-0x00000000053B0000-0x00000000053BA000-memory.dmp
    Filesize

    40KB

  • memory/4524-33-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/5080-18-0x0000000004F70000-0x0000000005598000-memory.dmp
    Filesize

    6.2MB

  • memory/5080-87-0x00000000077C0000-0x0000000007E3A000-memory.dmp
    Filesize

    6.5MB

  • memory/5080-88-0x0000000007170000-0x000000000718A000-memory.dmp
    Filesize

    104KB

  • memory/5080-76-0x0000000071010000-0x000000007105C000-memory.dmp
    Filesize

    304KB

  • memory/5080-90-0x00000000073F0000-0x0000000007486000-memory.dmp
    Filesize

    600KB

  • memory/5080-15-0x0000000004880000-0x00000000048B6000-memory.dmp
    Filesize

    216KB

  • memory/5080-17-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/5080-23-0x00000000056B0000-0x00000000056D2000-memory.dmp
    Filesize

    136KB

  • memory/5080-94-0x00000000074B0000-0x00000000074CA000-memory.dmp
    Filesize

    104KB

  • memory/5080-19-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/5080-24-0x0000000005750000-0x00000000057B6000-memory.dmp
    Filesize

    408KB

  • memory/5080-31-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/5080-102-0x0000000074820000-0x0000000074FD0000-memory.dmp
    Filesize

    7.7MB

  • memory/5080-34-0x0000000005860000-0x0000000005BB4000-memory.dmp
    Filesize

    3.3MB