Analysis

  • max time kernel
    149s
  • max time network
    148s
  • 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 18 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:1592
    • 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:1984
    • 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:3704
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8136.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2960
    • 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:5108
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8414.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4588
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp84D1.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4068

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\Windows\PowerShell\StartupProfileData-NonInteractive
    Filesize

    18KB

    MD5

    4a9220d1433feec1ce020605bcf66ef3

    SHA1

    f7a09c89138a153ecce905ef993fd53e251331d5

    SHA256

    cab63a6043029dbca85ef95ac0f030b508f272f76db60e08339c94d0c604cbdb

    SHA512

    b32639ef8cc213da908e4429f0006be180ed18427ac666c98e957cbd8a703fe859d2f2783411a4df22ea46eb3f568fa931ee9e0e28328c853ffa4eba27548ed9

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wwuyxuk1.2di.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp8136.tmp
    Filesize

    1KB

    MD5

    05c226023ee985f2f04595b94152203a

    SHA1

    387c43dbb6ab0e984f13fa2a434430fab589fc89

    SHA256

    994606ea901207b37edd4b4f449279edaab2ea3eded449476de986b9bb5efadb

    SHA512

    26b98771a626af95691bfc31c8a53e388a080662f13af84d4466380c2039ff8f0d46c07615176f972eb0264447c210f9bd8b3ae674161164edf2929d9f8399f7

  • C:\Users\Admin\AppData\Local\Temp\tmp8414.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmp84D1.tmp
    Filesize

    1KB

    MD5

    e7d3c8560fe3e223f6dfa16c2066930e

    SHA1

    8e7729d6856489a28fb1fd6d2fbc3661d6394f18

    SHA256

    ec5bea77c4f620d54db7e0ea1ee81551631b7d9e42ae619deaa9a14f5f69415f

    SHA512

    f6a4f3bf0fa30a459a662250f502772f431c1cef5562f8a3e9770529c5d24e7226b46531af8c9e96a556f417a275caaa70df96fddaa482c5218bb6b47f2614ae

  • memory/1592-4-0x0000000004E70000-0x0000000004E7A000-memory.dmp
    Filesize

    40KB

  • memory/1592-6-0x00000000051B0000-0x00000000051CE000-memory.dmp
    Filesize

    120KB

  • memory/1592-7-0x0000000005200000-0x0000000005210000-memory.dmp
    Filesize

    64KB

  • memory/1592-8-0x0000000005230000-0x0000000005246000-memory.dmp
    Filesize

    88KB

  • memory/1592-9-0x0000000006340000-0x00000000063BC000-memory.dmp
    Filesize

    496KB

  • memory/1592-10-0x00000000089B0000-0x0000000008A4C000-memory.dmp
    Filesize

    624KB

  • memory/1592-16-0x0000000074F7E000-0x0000000074F7F000-memory.dmp
    Filesize

    4KB

  • memory/1592-5-0x0000000074F70000-0x0000000075720000-memory.dmp
    Filesize

    7.7MB

  • memory/1592-24-0x0000000074F70000-0x0000000075720000-memory.dmp
    Filesize

    7.7MB

  • memory/1592-3-0x0000000004DB0000-0x0000000004E42000-memory.dmp
    Filesize

    584KB

  • memory/1592-2-0x0000000005280000-0x0000000005824000-memory.dmp
    Filesize

    5.6MB

  • memory/1592-0-0x0000000074F7E000-0x0000000074F7F000-memory.dmp
    Filesize

    4KB

  • memory/1592-1-0x0000000000410000-0x0000000000502000-memory.dmp
    Filesize

    968KB

  • memory/1984-25-0x0000000004C70000-0x0000000004C92000-memory.dmp
    Filesize

    136KB

  • memory/1984-61-0x0000000071410000-0x000000007145C000-memory.dmp
    Filesize

    304KB

  • memory/1984-96-0x0000000074F70000-0x0000000075720000-memory.dmp
    Filesize

    7.7MB

  • memory/1984-27-0x0000000005440000-0x00000000054A6000-memory.dmp
    Filesize

    408KB

  • memory/1984-26-0x0000000005360000-0x00000000053C6000-memory.dmp
    Filesize

    408KB

  • memory/1984-18-0x0000000074F70000-0x0000000075720000-memory.dmp
    Filesize

    7.7MB

  • memory/1984-39-0x00000000055B0000-0x0000000005904000-memory.dmp
    Filesize

    3.3MB

  • memory/1984-20-0x0000000074F70000-0x0000000075720000-memory.dmp
    Filesize

    7.7MB

  • memory/1984-54-0x0000000005A70000-0x0000000005ABC000-memory.dmp
    Filesize

    304KB

  • memory/1984-53-0x0000000005A50000-0x0000000005A6E000-memory.dmp
    Filesize

    120KB

  • memory/1984-17-0x0000000004CC0000-0x00000000052E8000-memory.dmp
    Filesize

    6.2MB

  • memory/1984-15-0x0000000002110000-0x0000000002146000-memory.dmp
    Filesize

    216KB

  • memory/1984-90-0x00000000070A0000-0x00000000070BA000-memory.dmp
    Filesize

    104KB

  • memory/1984-89-0x0000000006FA0000-0x0000000006FB4000-memory.dmp
    Filesize

    80KB

  • memory/1984-87-0x0000000006F60000-0x0000000006F71000-memory.dmp
    Filesize

    68KB

  • memory/1984-86-0x0000000006FE0000-0x0000000007076000-memory.dmp
    Filesize

    600KB

  • memory/1984-60-0x0000000005FF0000-0x0000000006022000-memory.dmp
    Filesize

    200KB

  • memory/1984-82-0x0000000006CF0000-0x0000000006D93000-memory.dmp
    Filesize

    652KB

  • memory/1984-72-0x0000000006030000-0x000000000604E000-memory.dmp
    Filesize

    120KB

  • memory/3704-88-0x0000000007720000-0x000000000772E000-memory.dmp
    Filesize

    56KB

  • memory/3704-83-0x0000000007B30000-0x00000000081AA000-memory.dmp
    Filesize

    6.5MB

  • memory/3704-84-0x00000000074F0000-0x000000000750A000-memory.dmp
    Filesize

    104KB

  • memory/3704-85-0x0000000007560000-0x000000000756A000-memory.dmp
    Filesize

    40KB

  • memory/3704-23-0x0000000074F70000-0x0000000075720000-memory.dmp
    Filesize

    7.7MB

  • memory/3704-71-0x0000000071410000-0x000000007145C000-memory.dmp
    Filesize

    304KB

  • memory/3704-91-0x0000000007810000-0x0000000007818000-memory.dmp
    Filesize

    32KB

  • memory/3704-97-0x0000000074F70000-0x0000000075720000-memory.dmp
    Filesize

    7.7MB

  • memory/5108-57-0x00000000050B0000-0x00000000050BC000-memory.dmp
    Filesize

    48KB

  • memory/5108-59-0x0000000005FA0000-0x0000000005FAA000-memory.dmp
    Filesize

    40KB

  • memory/5108-58-0x0000000005350000-0x000000000536E000-memory.dmp
    Filesize

    120KB

  • memory/5108-56-0x00000000050A0000-0x00000000050AA000-memory.dmp
    Filesize

    40KB

  • memory/5108-21-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB