Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-07-2024 12:46

General

  • Target

    962B35661C04B5BFF3E3504F9CD646A7.exe

  • Size

    1.4MB

  • MD5

    962b35661c04b5bff3e3504f9cd646a7

  • SHA1

    1a1cd695804bd14e8e1ea64a21b2b81fe76baf6c

  • SHA256

    af0b876a436452a6e998fc622493aaa4553bcc53864d66a6a6d5d476a85902eb

  • SHA512

    a7b7fb2990abc7a73e0f5963c3ce72b1b18a37fb908ec069985bde616e7e8fcd75f288855ae33218e66b1483b7f2596bf4729e3cab9afb478fc37691488964ec

  • SSDEEP

    24576:dngozf6mbIWaZWazVXOLJPqEXN9/uZteoFjqQOy:dnVD6mkWawkXmPqEXN9mZteuj5/

Malware Config

Extracted

Family

remcos

Botnet

NewRemoteHost

C2

newnex.3utilities.com:8580

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-68D53E

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Extracted

Family

nanocore

Version

1.2.2.0

C2

newsddawork.3utilities.com:1620

maxlogs.webhop.me:1620

Mutex

1fa46b72-10f9-4da3-bc15-84dde165706d

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    maxlogs.webhop.me

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-02-17T03:41:10.727034736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1620

  • default_group

    NewBin

  • 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

    1fa46b72-10f9-4da3-bc15-84dde165706d

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    newsddawork.3utilities.com

  • primary_dns_server

    8.8.8.8

  • 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.

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 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.

  • Executes dropped EXE 2 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 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 behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\962B35661C04B5BFF3E3504F9CD646A7.exe
    "C:\Users\Admin\AppData\Local\Temp\962B35661C04B5BFF3E3504F9CD646A7.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tPbnVzkURocjXA.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4624
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tPbnVzkURocjXA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpED1F.tmp"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1832
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:660
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\vxxzuiikwvvbsujofvrrbtkwhgrgobgkk"
        3⤵
          PID:2552
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\vxxzuiikwvvbsujofvrrbtkwhgrgobgkk"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2040
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\yrcsu"
          3⤵
            PID:1672
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\yrcsu"
            3⤵
              PID:4552
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\yrcsu"
              3⤵
                PID:3080
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
                C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\yrcsu"
                3⤵
                • Accesses Microsoft Outlook accounts
                PID:4168
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
                C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\ithkvkmf"
                3⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:2572
              • C:\Users\Admin\AppData\Local\Temp\a.exe
                "C:\Users\Admin\AppData\Local\Temp\a.exe"
                3⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:1364
                • C:\Users\Admin\AppData\Local\Temp\a.exe
                  "C:\Users\Admin\AppData\Local\Temp\a.exe"
                  4⤵
                  • Executes dropped EXE
                  • Adds Run key to start application
                  • Checks whether UAC is enabled
                  • Drops file in Program Files directory
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious behavior: GetForegroundWindowSpam
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1500

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\remcos\logs.dat

            Filesize

            144B

            MD5

            06aa01346610b670d975b263017028bb

            SHA1

            d0d122e5abffb8d8195c8d9b1a0d92999740e989

            SHA256

            dd7a56babf4007de5dc314ff46135a4c428a3e1a7d0e10517e38a93cf8958308

            SHA512

            cc053b57a51d7e300a82fe397e5c0a5ca5e4d58b5040aa61d328d8021718d5aa242f627c6621d2a28a4877a50124446d47712ddd7e96d301c21e19bcbbbfe5b2

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3iqdwdkw.c0o.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • C:\Users\Admin\AppData\Local\Temp\a.exe

            Filesize

            623KB

            MD5

            7166bb20971fd3ea0214675b80d6dce2

            SHA1

            c6bb92b860375a05a54465b9a2b53c4210d88042

            SHA256

            b6fcf56c757a74ebf781c794d629965dc94bc256ebeb502c2a948681789d5044

            SHA512

            0b3e8569c171f1f95e3c5ad724ee02cb81c8c0af3a384058de9578930fd56dcf00e92f76818501537d91aa8d905375a8f179224ce08b4917989622901a97eb64

          • C:\Users\Admin\AppData\Local\Temp\tmpED1F.tmp

            Filesize

            1KB

            MD5

            b579d2068da768b020203fe334563fa5

            SHA1

            08857f6065da81f7eac97ed68e192708d317a453

            SHA256

            a061eb5952bd0ac15fe69f72bd2e77ad1f055f7a9c8d3aa75460fc27e61ba34f

            SHA512

            8a3021e73884649017dce328a30984fb854429ed192b4eb7b137c8cbdf24b4c01a536c1d90c77d2d9265aed444c7ad2a9385c76121983cc4da9ab148a812c95f

          • C:\Users\Admin\AppData\Local\Temp\vxxzuiikwvvbsujofvrrbtkwhgrgobgkk

            Filesize

            4KB

            MD5

            71e3611290752b1a114e303d84e3987f

            SHA1

            210794023f369235615743c802fce5055961ee6e

            SHA256

            5163d0e849d5d39f1e8beb9d13beea8240d532dff6f28433522148628007af06

            SHA512

            d0235dd58f9038009e44c4847535f2bb652f093418fdfd890c01b4b9d8981df3a31e4a89f9099c226becbfe8541015d60f6b852165241d08cb8795d93dd2eb09

          • memory/660-133-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-43-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-74-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-134-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-135-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-64-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-190-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-62-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-93-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-189-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-182-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-92-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-21-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-27-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-181-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-174-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-32-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-128-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-61-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-70-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-29-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-23-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-31-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-173-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-114-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-113-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/660-46-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-47-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/660-112-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/660-109-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/660-59-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/1364-138-0x00000000064F0000-0x000000000656A000-memory.dmp

            Filesize

            488KB

          • memory/1364-127-0x0000000000940000-0x00000000009E0000-memory.dmp

            Filesize

            640KB

          • memory/1364-129-0x0000000006920000-0x00000000069B8000-memory.dmp

            Filesize

            608KB

          • memory/1364-130-0x00000000057D0000-0x00000000057E4000-memory.dmp

            Filesize

            80KB

          • memory/1364-136-0x00000000064B0000-0x00000000064BA000-memory.dmp

            Filesize

            40KB

          • memory/1364-137-0x00000000064C0000-0x00000000064CE000-memory.dmp

            Filesize

            56KB

          • memory/1500-156-0x0000000006A40000-0x0000000006A54000-memory.dmp

            Filesize

            80KB

          • memory/1500-160-0x0000000006AA0000-0x0000000006ACE000-memory.dmp

            Filesize

            184KB

          • memory/1500-154-0x0000000006A20000-0x0000000006A2C000-memory.dmp

            Filesize

            48KB

          • memory/1500-153-0x0000000006A10000-0x0000000006A22000-memory.dmp

            Filesize

            72KB

          • memory/1500-152-0x0000000006A00000-0x0000000006A0E000-memory.dmp

            Filesize

            56KB

          • memory/1500-157-0x0000000006A50000-0x0000000006A60000-memory.dmp

            Filesize

            64KB

          • memory/1500-151-0x00000000069D0000-0x00000000069EA000-memory.dmp

            Filesize

            104KB

          • memory/1500-150-0x00000000069C0000-0x00000000069D2000-memory.dmp

            Filesize

            72KB

          • memory/1500-146-0x0000000005930000-0x000000000593A000-memory.dmp

            Filesize

            40KB

          • memory/1500-145-0x0000000005640000-0x000000000565E000-memory.dmp

            Filesize

            120KB

          • memory/1500-144-0x00000000053F0000-0x00000000053FA000-memory.dmp

            Filesize

            40KB

          • memory/1500-139-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1500-158-0x0000000006A70000-0x0000000006A84000-memory.dmp

            Filesize

            80KB

          • memory/1500-155-0x0000000006A30000-0x0000000006A3E000-memory.dmp

            Filesize

            56KB

          • memory/1500-159-0x0000000006A90000-0x0000000006A9E000-memory.dmp

            Filesize

            56KB

          • memory/1500-161-0x0000000006AE0000-0x0000000006AF4000-memory.dmp

            Filesize

            80KB

          • memory/2028-4-0x0000000005170000-0x00000000054C4000-memory.dmp

            Filesize

            3.3MB

          • memory/2028-2-0x00000000054D0000-0x0000000005A74000-memory.dmp

            Filesize

            5.6MB

          • memory/2028-7-0x0000000007E10000-0x0000000007E2A000-memory.dmp

            Filesize

            104KB

          • memory/2028-8-0x0000000006590000-0x000000000659E000-memory.dmp

            Filesize

            56KB

          • memory/2028-9-0x0000000006680000-0x0000000006760000-memory.dmp

            Filesize

            896KB

          • memory/2028-0-0x000000007448E000-0x000000007448F000-memory.dmp

            Filesize

            4KB

          • memory/2028-3-0x0000000004FD0000-0x0000000005062000-memory.dmp

            Filesize

            584KB

          • memory/2028-1-0x0000000000480000-0x00000000005E2000-memory.dmp

            Filesize

            1.4MB

          • memory/2028-10-0x0000000006800000-0x000000000689C000-memory.dmp

            Filesize

            624KB

          • memory/2028-5-0x0000000074480000-0x0000000074C30000-memory.dmp

            Filesize

            7.7MB

          • memory/2028-6-0x0000000005AB0000-0x0000000005ABA000-memory.dmp

            Filesize

            40KB

          • memory/2028-33-0x0000000074480000-0x0000000074C30000-memory.dmp

            Filesize

            7.7MB

          • memory/2040-95-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2040-96-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2040-98-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2572-104-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2572-105-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2572-106-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4168-100-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/4168-97-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/4168-99-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/4624-44-0x0000000006790000-0x00000000067AE000-memory.dmp

            Filesize

            120KB

          • memory/4624-20-0x0000000074480000-0x0000000074C30000-memory.dmp

            Filesize

            7.7MB

          • memory/4624-18-0x0000000005840000-0x0000000005E68000-memory.dmp

            Filesize

            6.2MB

          • memory/4624-82-0x0000000074480000-0x0000000074C30000-memory.dmp

            Filesize

            7.7MB

          • memory/4624-78-0x0000000007DD0000-0x0000000007DD8000-memory.dmp

            Filesize

            32KB

          • memory/4624-77-0x0000000007DF0000-0x0000000007E0A000-memory.dmp

            Filesize

            104KB

          • memory/4624-76-0x0000000007CF0000-0x0000000007D04000-memory.dmp

            Filesize

            80KB

          • memory/4624-75-0x0000000007CE0000-0x0000000007CEE000-memory.dmp

            Filesize

            56KB

          • memory/4624-73-0x0000000007CB0000-0x0000000007CC1000-memory.dmp

            Filesize

            68KB

          • memory/4624-72-0x0000000007D30000-0x0000000007DC6000-memory.dmp

            Filesize

            600KB

          • memory/4624-71-0x0000000007B30000-0x0000000007B3A000-memory.dmp

            Filesize

            40KB

          • memory/4624-68-0x0000000007AB0000-0x0000000007ACA000-memory.dmp

            Filesize

            104KB

          • memory/4624-67-0x0000000008100000-0x000000000877A000-memory.dmp

            Filesize

            6.5MB

          • memory/4624-66-0x0000000007760000-0x0000000007803000-memory.dmp

            Filesize

            652KB

          • memory/4624-60-0x0000000006D40000-0x0000000006D5E000-memory.dmp

            Filesize

            120KB

          • memory/4624-49-0x0000000072F30000-0x0000000072F7C000-memory.dmp

            Filesize

            304KB

          • memory/4624-48-0x0000000006D60000-0x0000000006D92000-memory.dmp

            Filesize

            200KB

          • memory/4624-22-0x00000000056D0000-0x00000000056F2000-memory.dmp

            Filesize

            136KB

          • memory/4624-45-0x00000000067D0000-0x000000000681C000-memory.dmp

            Filesize

            304KB

          • memory/4624-25-0x0000000005770000-0x00000000057D6000-memory.dmp

            Filesize

            408KB

          • memory/4624-26-0x0000000005EE0000-0x0000000005F46000-memory.dmp

            Filesize

            408KB

          • memory/4624-19-0x0000000074480000-0x0000000074C30000-memory.dmp

            Filesize

            7.7MB

          • memory/4624-17-0x0000000074480000-0x0000000074C30000-memory.dmp

            Filesize

            7.7MB

          • memory/4624-15-0x00000000051D0000-0x0000000005206000-memory.dmp

            Filesize

            216KB