Analysis

  • max time kernel
    149s
  • max time network
    149s
  • 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 08:29

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:3852
    • 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:4308
    • 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:2504
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9412.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4904
    • 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:3408
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9839.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3132
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9A3D.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3676

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

    4532518ef80f3db109d0ff4672321db8

    SHA1

    2dca6c62f7b730efdd8145e261fa6f7cbffed66d

    SHA256

    f53248a3bb30e97ef98a4c7dd70a76b7d4b943bd5b21e899764b0a818cfb28de

    SHA512

    2a21402ca5c5a286b3950ea6cb76bf8e52f72c6b939b032358def71d5fbff868603ef7371e328866a6f238b7398e68f5873d7eec8d189f04b1e8dc6226510ea4

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yukfe1ul.eke.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp9412.tmp

    Filesize

    1KB

    MD5

    af4404b2f40347b8dc341fc4a8f2cfcf

    SHA1

    5d157fb481c54c9c9aa0c397c96d892943738976

    SHA256

    c6b214362ad6eea7d8e857a9f794eab01930feeb3707b168ca29d1efbc70b412

    SHA512

    31ee8bc3ef818b3495f87bb6cfece9ea97e3f41d059426a9f85489c0a780bb26cab93920aba1962c6b84be5fe3eb3c2999af1a3e0e10e1c8804486dab410a983

  • C:\Users\Admin\AppData\Local\Temp\tmp9839.tmp

    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmp9A3D.tmp

    Filesize

    1KB

    MD5

    2f26d92c1eeead3896820e56ec46f6f1

    SHA1

    d95533b61eed7d89e4ada56bc566d60e42ac1f61

    SHA256

    99a158463ce40c750bad6991ae1fceece305a0dbf8e209dd7147b5d539756bfa

    SHA512

    6c1ed12d5e1afcd9e7f327e0153786fd8594f75a995f341c408ef014e69917452a9fe99c511f0249aceb57b3045b707f1fd3f404e4086cfbf0aadcb3318db892

  • memory/2504-23-0x0000000075010000-0x00000000757C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2504-29-0x0000000075010000-0x00000000757C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2504-65-0x0000000075890000-0x00000000758DC000-memory.dmp

    Filesize

    304KB

  • memory/2504-86-0x0000000006D30000-0x0000000006DD3000-memory.dmp

    Filesize

    652KB

  • memory/2504-75-0x00000000060F0000-0x000000000610E000-memory.dmp

    Filesize

    120KB

  • memory/2504-64-0x0000000006CF0000-0x0000000006D22000-memory.dmp

    Filesize

    200KB

  • memory/2504-102-0x0000000075010000-0x00000000757C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2504-35-0x00000000055A0000-0x0000000005606000-memory.dmp

    Filesize

    408KB

  • memory/2504-36-0x0000000005610000-0x0000000005676000-memory.dmp

    Filesize

    408KB

  • memory/2504-87-0x0000000006E60000-0x0000000006E7A000-memory.dmp

    Filesize

    104KB

  • memory/2504-89-0x0000000006ED0000-0x0000000006EDA000-memory.dmp

    Filesize

    40KB

  • memory/2504-90-0x00000000070E0000-0x0000000007176000-memory.dmp

    Filesize

    600KB

  • memory/2504-49-0x0000000075010000-0x00000000757C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3408-60-0x00000000055E0000-0x00000000055EA000-memory.dmp

    Filesize

    40KB

  • memory/3408-30-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/3408-62-0x00000000058B0000-0x00000000058CE000-memory.dmp

    Filesize

    120KB

  • memory/3408-63-0x0000000006830000-0x000000000683A000-memory.dmp

    Filesize

    40KB

  • memory/3408-61-0x0000000005830000-0x000000000583C000-memory.dmp

    Filesize

    48KB

  • memory/3852-50-0x0000000075010000-0x00000000757C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3852-10-0x0000000007C70000-0x0000000007D0C000-memory.dmp

    Filesize

    624KB

  • memory/3852-0-0x000000007501E000-0x000000007501F000-memory.dmp

    Filesize

    4KB

  • memory/3852-1-0x0000000000900000-0x00000000009F2000-memory.dmp

    Filesize

    968KB

  • memory/3852-2-0x0000000005870000-0x0000000005E14000-memory.dmp

    Filesize

    5.6MB

  • memory/3852-3-0x00000000052C0000-0x0000000005352000-memory.dmp

    Filesize

    584KB

  • memory/3852-4-0x0000000005460000-0x000000000546A000-memory.dmp

    Filesize

    40KB

  • memory/3852-21-0x0000000075010000-0x00000000757C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3852-5-0x0000000075010000-0x00000000757C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3852-6-0x0000000005590000-0x00000000055AE000-memory.dmp

    Filesize

    120KB

  • memory/3852-7-0x00000000055E0000-0x00000000055F0000-memory.dmp

    Filesize

    64KB

  • memory/3852-8-0x0000000005820000-0x0000000005836000-memory.dmp

    Filesize

    88KB

  • memory/3852-16-0x000000007501E000-0x000000007501F000-memory.dmp

    Filesize

    4KB

  • memory/3852-9-0x0000000006990000-0x0000000006A0C000-memory.dmp

    Filesize

    496KB

  • memory/4308-19-0x0000000075010000-0x00000000757C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4308-92-0x0000000007830000-0x000000000783E000-memory.dmp

    Filesize

    56KB

  • memory/4308-15-0x00000000029C0000-0x00000000029F6000-memory.dmp

    Filesize

    216KB

  • memory/4308-18-0x0000000075010000-0x00000000757C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4308-88-0x0000000007C50000-0x00000000082CA000-memory.dmp

    Filesize

    6.5MB

  • memory/4308-17-0x0000000005550000-0x0000000005B78000-memory.dmp

    Filesize

    6.2MB

  • memory/4308-47-0x0000000005E50000-0x00000000061A4000-memory.dmp

    Filesize

    3.3MB

  • memory/4308-54-0x0000000006310000-0x000000000635C000-memory.dmp

    Filesize

    304KB

  • memory/4308-91-0x0000000007800000-0x0000000007811000-memory.dmp

    Filesize

    68KB

  • memory/4308-76-0x0000000075890000-0x00000000758DC000-memory.dmp

    Filesize

    304KB

  • memory/4308-94-0x0000000007940000-0x000000000795A000-memory.dmp

    Filesize

    104KB

  • memory/4308-95-0x0000000007920000-0x0000000007928000-memory.dmp

    Filesize

    32KB

  • memory/4308-93-0x0000000007840000-0x0000000007854000-memory.dmp

    Filesize

    80KB

  • memory/4308-51-0x00000000062D0000-0x00000000062EE000-memory.dmp

    Filesize

    120KB

  • memory/4308-101-0x0000000075010000-0x00000000757C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4308-22-0x0000000005510000-0x0000000005532000-memory.dmp

    Filesize

    136KB

  • memory/4308-48-0x0000000075010000-0x00000000757C0000-memory.dmp

    Filesize

    7.7MB