Analysis

  • max time kernel
    150s
  • max time network
    152s
  • 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 08:25

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:4852
    • 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:4072
    • 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:4492
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp877F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3372
    • 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:4708
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8B38.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3624
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8C72.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3216

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

    76b637b7bd811ea1512386f2b1d1c521

    SHA1

    d42746aef9a8b605f7d9db63f9f90ee2eb73ec42

    SHA256

    bc36f0a809522b0ed49d854ae6696788b99167e20928ef82c783298612dfce9a

    SHA512

    200b7b4b22e26f0ce5b6dc27fd26f933bb2afd3a99f78cfa41503f929345072681dbd69e13feaf609577de64bebcb41ed02c2af4dcd18894879fe45b9fcbe867

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_x15cpm0d.4ww.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp877F.tmp
    Filesize

    1KB

    MD5

    2573f6eb52917639dd8dc6a6fd291a60

    SHA1

    79d9b256bc2fecebf3c3c42a9608ddb2ae761cb8

    SHA256

    fcd9da72234d9e8ebab22342cc12ff6187a818ff93d923ca85e9fe1444eb05fc

    SHA512

    6026def83e211c8ff7fcc3b0900914a50fe5d78cf2e5ac9395eb193d82df7368f1d3dc5fc8515534aded7147852732b6badf687ead5ac5a7b26df82f7968e37f

  • C:\Users\Admin\AppData\Local\Temp\tmp8B38.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmp8C72.tmp
    Filesize

    1KB

    MD5

    c4aecdef99eba873119e79616df3f4b0

    SHA1

    b1b3af52655fb633eed909dfed05b64fbbfac37c

    SHA256

    24fd0d87bea36a024449a95f808aaa174e4ed9003cb8a427b67c02411b8a2e0b

    SHA512

    e3f44b07267fccf4f5abd4efe80f2b037ddadc4cb898bdfca9d21ac5d79fcac828950065c2060d3ce125ee971fc3096183afee5287ba9951fbbda7257d8ed8d4

  • memory/4072-65-0x0000000075B90000-0x0000000075BDC000-memory.dmp
    Filesize

    304KB

  • memory/4072-46-0x00000000752E0000-0x0000000075A90000-memory.dmp
    Filesize

    7.7MB

  • memory/4072-102-0x00000000752E0000-0x0000000075A90000-memory.dmp
    Filesize

    7.7MB

  • memory/4072-90-0x0000000007D10000-0x0000000007DA6000-memory.dmp
    Filesize

    600KB

  • memory/4072-86-0x0000000007740000-0x00000000077E3000-memory.dmp
    Filesize

    652KB

  • memory/4072-16-0x00000000051B0000-0x00000000051E6000-memory.dmp
    Filesize

    216KB

  • memory/4072-76-0x00000000076D0000-0x00000000076EE000-memory.dmp
    Filesize

    120KB

  • memory/4072-17-0x0000000005970000-0x0000000005F98000-memory.dmp
    Filesize

    6.2MB

  • memory/4072-18-0x00000000752E0000-0x0000000075A90000-memory.dmp
    Filesize

    7.7MB

  • memory/4072-19-0x00000000752E0000-0x0000000075A90000-memory.dmp
    Filesize

    7.7MB

  • memory/4072-21-0x00000000056B0000-0x00000000056D2000-memory.dmp
    Filesize

    136KB

  • memory/4072-64-0x00000000076F0000-0x0000000007722000-memory.dmp
    Filesize

    200KB

  • memory/4072-52-0x00000000067E0000-0x000000000682C000-memory.dmp
    Filesize

    304KB

  • memory/4072-23-0x00000000058F0000-0x0000000005956000-memory.dmp
    Filesize

    408KB

  • memory/4072-22-0x00000000057D0000-0x0000000005836000-memory.dmp
    Filesize

    408KB

  • memory/4072-51-0x0000000006750000-0x000000000676E000-memory.dmp
    Filesize

    120KB

  • memory/4072-32-0x00000000061A0000-0x00000000064F4000-memory.dmp
    Filesize

    3.3MB

  • memory/4492-88-0x0000000007B30000-0x0000000007B4A000-memory.dmp
    Filesize

    104KB

  • memory/4492-92-0x0000000007D60000-0x0000000007D6E000-memory.dmp
    Filesize

    56KB

  • memory/4492-101-0x00000000752E0000-0x0000000075A90000-memory.dmp
    Filesize

    7.7MB

  • memory/4492-89-0x0000000007BA0000-0x0000000007BAA000-memory.dmp
    Filesize

    40KB

  • memory/4492-48-0x00000000752E0000-0x0000000075A90000-memory.dmp
    Filesize

    7.7MB

  • memory/4492-95-0x0000000007E50000-0x0000000007E58000-memory.dmp
    Filesize

    32KB

  • memory/4492-25-0x00000000752E0000-0x0000000075A90000-memory.dmp
    Filesize

    7.7MB

  • memory/4492-94-0x0000000007E70000-0x0000000007E8A000-memory.dmp
    Filesize

    104KB

  • memory/4492-93-0x0000000007D70000-0x0000000007D84000-memory.dmp
    Filesize

    80KB

  • memory/4492-87-0x0000000008180000-0x00000000087FA000-memory.dmp
    Filesize

    6.5MB

  • memory/4492-75-0x0000000075B90000-0x0000000075BDC000-memory.dmp
    Filesize

    304KB

  • memory/4492-26-0x00000000752E0000-0x0000000075A90000-memory.dmp
    Filesize

    7.7MB

  • memory/4492-91-0x0000000007D30000-0x0000000007D41000-memory.dmp
    Filesize

    68KB

  • memory/4708-63-0x0000000006A80000-0x0000000006A8A000-memory.dmp
    Filesize

    40KB

  • memory/4708-62-0x0000000006950000-0x000000000696E000-memory.dmp
    Filesize

    120KB

  • memory/4708-61-0x00000000058F0000-0x00000000058FC000-memory.dmp
    Filesize

    48KB

  • memory/4708-60-0x00000000058E0000-0x00000000058EA000-memory.dmp
    Filesize

    40KB

  • memory/4708-47-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/4852-15-0x00000000752EE000-0x00000000752EF000-memory.dmp
    Filesize

    4KB

  • memory/4852-10-0x0000000008CD0000-0x0000000008D6C000-memory.dmp
    Filesize

    624KB

  • memory/4852-7-0x00000000062C0000-0x00000000062D0000-memory.dmp
    Filesize

    64KB

  • memory/4852-0-0x00000000752EE000-0x00000000752EF000-memory.dmp
    Filesize

    4KB

  • memory/4852-9-0x0000000006730000-0x00000000067AC000-memory.dmp
    Filesize

    496KB

  • memory/4852-6-0x00000000056D0000-0x00000000056EE000-memory.dmp
    Filesize

    120KB

  • memory/4852-3-0x00000000050B0000-0x0000000005142000-memory.dmp
    Filesize

    584KB

  • memory/4852-4-0x0000000005290000-0x000000000529A000-memory.dmp
    Filesize

    40KB

  • memory/4852-24-0x00000000752E0000-0x0000000075A90000-memory.dmp
    Filesize

    7.7MB

  • memory/4852-50-0x00000000752E0000-0x0000000075A90000-memory.dmp
    Filesize

    7.7MB

  • memory/4852-2-0x0000000005710000-0x0000000005CB4000-memory.dmp
    Filesize

    5.6MB

  • memory/4852-1-0x00000000005E0000-0x00000000006D2000-memory.dmp
    Filesize

    968KB

  • memory/4852-8-0x00000000062F0000-0x0000000006306000-memory.dmp
    Filesize

    88KB

  • memory/4852-5-0x00000000752E0000-0x0000000075A90000-memory.dmp
    Filesize

    7.7MB