Analysis

  • max time kernel
    147s
  • max time network
    153s
  • 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 08:25

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 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:3508
    • 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:404
    • 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:4496
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAEAF.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4264
    • 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:1760
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "LAN Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB2C5.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1524
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "LAN Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB44D.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4124

Network

MITRE ATT&CK Enterprise v15

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

    e947e3deb844e59bbc6b788d5fa3efe8

    SHA1

    a9fd38adb0108f72c29525c65446ce0389b95b58

    SHA256

    daedbe8edf943e17799d61e970ad140f6c4548936d702732b84efc8f75d0b69f

    SHA512

    8f647dc918e776d63c7e3e072c413bcbba08bf9e1e0a0b78383720d96155ed0efad93554c7df492dff0e5f48bf1cf392d99b77cdce9a4f67840b5e2cb0d98ca4

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_isjq4zoa.hv2.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    1KB

    MD5

    67fe6cee1bc9e0d52a71aa406e6ddcca

    SHA1

    d86debd51eb72c04787bae21ada1ae1ccbf3760e

    SHA256

    d89b2de6b959feafc690e270cc6b9281b6923d1c31ceabebd925ac390d2ec819

    SHA512

    c8cea7a4c9c13bc1b6584b385fcfbce9e37c510937fe9c51a964323d2a8ee297f88463a170c60ab460390f36aa2d61d8d8a8a932590f985099ec0f673335935c

  • C:\Users\Admin\AppData\Local\Temp\tmpB2C5.tmp

    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmpB44D.tmp

    Filesize

    1KB

    MD5

    ecf141ec69adbb2a5c3dd5c85cd0ec39

    SHA1

    0ad224632fa58d103142c05c44a142f3d7208291

    SHA256

    64d8cfa0b25afee269839cd5fc0b66e5643bc318e5f4d3ce1b9dba2456c83316

    SHA512

    4821b062d6672f3ed07833cfd7ab9abb533850b451b632d781fbfad8238fcd5ac52855f1f239547ae2d1c1477959f022430302a75cfd3c19a8473af72a1ef201

  • memory/404-17-0x00007FFF571F0000-0x00007FFF573E5000-memory.dmp

    Filesize

    2.0MB

  • memory/404-84-0x00000000079D0000-0x00000000079DA000-memory.dmp

    Filesize

    40KB

  • memory/404-81-0x0000000007600000-0x00000000076A3000-memory.dmp

    Filesize

    652KB

  • memory/404-59-0x00000000075B0000-0x00000000075E2000-memory.dmp

    Filesize

    200KB

  • memory/404-96-0x00007FFF571F0000-0x00007FFF573E5000-memory.dmp

    Filesize

    2.0MB

  • memory/404-15-0x0000000002D10000-0x0000000002D46000-memory.dmp

    Filesize

    216KB

  • memory/404-86-0x0000000007B60000-0x0000000007B71000-memory.dmp

    Filesize

    68KB

  • memory/404-90-0x0000000007C80000-0x0000000007C88000-memory.dmp

    Filesize

    32KB

  • memory/404-85-0x0000000007BE0000-0x0000000007C76000-memory.dmp

    Filesize

    600KB

  • memory/404-82-0x0000000007960000-0x000000000797A000-memory.dmp

    Filesize

    104KB

  • memory/404-60-0x0000000075B60000-0x0000000075BAC000-memory.dmp

    Filesize

    304KB

  • memory/1760-56-0x00000000053F0000-0x00000000053FC000-memory.dmp

    Filesize

    48KB

  • memory/1760-57-0x0000000005520000-0x000000000553E000-memory.dmp

    Filesize

    120KB

  • memory/1760-55-0x00000000053E0000-0x00000000053EA000-memory.dmp

    Filesize

    40KB

  • memory/1760-24-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1760-58-0x0000000005740000-0x000000000574A000-memory.dmp

    Filesize

    40KB

  • memory/3508-8-0x0000000006020000-0x0000000006036000-memory.dmp

    Filesize

    88KB

  • memory/3508-36-0x00007FFF571F0000-0x00007FFF573E5000-memory.dmp

    Filesize

    2.0MB

  • memory/3508-0-0x00007FFF571F0000-0x00007FFF573E5000-memory.dmp

    Filesize

    2.0MB

  • memory/3508-16-0x00007FFF571F0000-0x00007FFF573E5000-memory.dmp

    Filesize

    2.0MB

  • memory/3508-10-0x0000000008970000-0x0000000008A0C000-memory.dmp

    Filesize

    624KB

  • memory/3508-9-0x0000000006330000-0x00000000063AC000-memory.dmp

    Filesize

    496KB

  • memory/3508-7-0x0000000005FF0000-0x0000000006000000-memory.dmp

    Filesize

    64KB

  • memory/3508-6-0x0000000004F00000-0x0000000004F1E000-memory.dmp

    Filesize

    120KB

  • memory/3508-5-0x0000000004DD0000-0x0000000004DDA000-memory.dmp

    Filesize

    40KB

  • memory/3508-4-0x00007FFF571F0000-0x00007FFF573E5000-memory.dmp

    Filesize

    2.0MB

  • memory/3508-3-0x0000000004D30000-0x0000000004DC2000-memory.dmp

    Filesize

    584KB

  • memory/3508-2-0x0000000005240000-0x00000000057E4000-memory.dmp

    Filesize

    5.6MB

  • memory/3508-1-0x0000000000230000-0x0000000000322000-memory.dmp

    Filesize

    968KB

  • memory/4496-37-0x0000000006140000-0x000000000615E000-memory.dmp

    Filesize

    120KB

  • memory/4496-80-0x0000000006770000-0x000000000678E000-memory.dmp

    Filesize

    120KB

  • memory/4496-83-0x0000000007AD0000-0x000000000814A000-memory.dmp

    Filesize

    6.5MB

  • memory/4496-63-0x0000000075B60000-0x0000000075BAC000-memory.dmp

    Filesize

    304KB

  • memory/4496-38-0x0000000006170000-0x00000000061BC000-memory.dmp

    Filesize

    304KB

  • memory/4496-30-0x0000000005B30000-0x0000000005E84000-memory.dmp

    Filesize

    3.3MB

  • memory/4496-23-0x00000000052A0000-0x0000000005306000-memory.dmp

    Filesize

    408KB

  • memory/4496-87-0x00000000076B0000-0x00000000076BE000-memory.dmp

    Filesize

    56KB

  • memory/4496-88-0x00000000076C0000-0x00000000076D4000-memory.dmp

    Filesize

    80KB

  • memory/4496-89-0x00000000077C0000-0x00000000077DA000-memory.dmp

    Filesize

    104KB

  • memory/4496-22-0x0000000005230000-0x0000000005296000-memory.dmp

    Filesize

    408KB

  • memory/4496-21-0x0000000005190000-0x00000000051B2000-memory.dmp

    Filesize

    136KB

  • memory/4496-18-0x00007FFF571F0000-0x00007FFF573E5000-memory.dmp

    Filesize

    2.0MB

  • memory/4496-19-0x0000000005400000-0x0000000005A28000-memory.dmp

    Filesize

    6.2MB

  • memory/4496-97-0x00007FFF571F0000-0x00007FFF573E5000-memory.dmp

    Filesize

    2.0MB