Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/07/2024, 02:44

General

  • Target

    af0b876a436452a6e998fc622493aaa4553bcc53864d66a6a6d5d476a85902eb.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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 19 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\af0b876a436452a6e998fc622493aaa4553bcc53864d66a6a6d5d476a85902eb.exe
    "C:\Users\Admin\AppData\Local\Temp\af0b876a436452a6e998fc622493aaa4553bcc53864d66a6a6d5d476a85902eb.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1228
    • 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
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3976
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tPbnVzkURocjXA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEE38.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4012
    • 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
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1424
      • 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\raqcrlqbwfvetu"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1780
      • 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\bcvvsdbuknnjvavfcg"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:4416
      • 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\exaokwmwgvfvgojjtjqpr"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3792
      • C:\Users\Admin\AppData\Local\Temp\a.exe
        "C:\Users\Admin\AppData\Local\Temp\a.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3288
        • 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
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:4876

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    909cefff7cf10940b0821dae8344e832

    SHA1

    07331043edd66b36264700680230e288648d374c

    SHA256

    3955898ef2e786279b382e9875e4f33be4a73805f41ee55310c8ab816804affb

    SHA512

    6c72d17d515938b30b2439a872096d37235b573fb539c667eb7925825cd00a408f241fd183ade0501481138e788ce5c059f83295383f5c4696667fe68be1418f

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\a.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_231fdhob.sv4.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    651KB

    MD5

    e5b8332fb35dc095481560dfbfe5756c

    SHA1

    1d90a968af733cd3c2dde3ad45546e32fd6fa37d

    SHA256

    2e468efceab48c6617c4f57411fdc0c7789597f57d11a3b5832f7d4cd8794a1a

    SHA512

    35111a41470fe18cf3d293cc926c623ce7ffa4a81f8ff0ed141d2927b9865024f7c2c9346ba8ca092d777253dcd5c708356daf156cd0c723f7a956b1a28602fe

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

    Filesize

    4KB

    MD5

    982ebb238759653970e22ee9fad24470

    SHA1

    15fca6be8cc4a276c9f70a73f28c52c3b0eead15

    SHA256

    c8b9cad5602932ea51b923f39f4b2d9aedf1f4915880d89032ab6636acaf9bea

    SHA512

    c8777edf0dd3e72e0cf3bb89db2bc7856fed0eeca7199806fec341e9168899e3b700c73a6b2e7cb0e8ccc5523116d6ecfde5c9ebcc83288a162dd1b0ea78201b

  • C:\Users\Admin\AppData\Local\Temp\tmpEE38.tmp

    Filesize

    1KB

    MD5

    4e9e26f23c52de113d24ec0d1bdb4fbc

    SHA1

    2c7aedb50b683a7c69c69bcd177ef0f8d9b9c1c2

    SHA256

    c735b8dfa7fc4eba0ed495a8378c5be7607948e845fb5fca0927828a0df71e25

    SHA512

    af3ca54eb31db25ea60df86f357db9f17140ed030f4727ffa25ab55c5db195bb1f8b4cd69735dffbe4573569b9303aecb19d2b1142ee4c6ec7a53d5651c54d95

  • memory/1228-4-0x0000000006100000-0x0000000006454000-memory.dmp

    Filesize

    3.3MB

  • memory/1228-7-0x0000000008470000-0x000000000848A000-memory.dmp

    Filesize

    104KB

  • memory/1228-8-0x0000000006D60000-0x0000000006D6E000-memory.dmp

    Filesize

    56KB

  • memory/1228-9-0x0000000006E50000-0x0000000006F30000-memory.dmp

    Filesize

    896KB

  • memory/1228-10-0x0000000006FD0000-0x000000000706C000-memory.dmp

    Filesize

    624KB

  • memory/1228-6-0x00000000057E0000-0x00000000057EA000-memory.dmp

    Filesize

    40KB

  • memory/1228-5-0x0000000074ED0000-0x0000000075680000-memory.dmp

    Filesize

    7.7MB

  • memory/1228-3-0x0000000005640000-0x00000000056D2000-memory.dmp

    Filesize

    584KB

  • memory/1228-2-0x0000000005B50000-0x00000000060F4000-memory.dmp

    Filesize

    5.6MB

  • memory/1228-1-0x0000000000AD0000-0x0000000000C32000-memory.dmp

    Filesize

    1.4MB

  • memory/1228-0-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

    Filesize

    4KB

  • memory/1228-42-0x0000000074ED0000-0x0000000075680000-memory.dmp

    Filesize

    7.7MB

  • memory/1424-79-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-143-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-33-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-176-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-26-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-175-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-172-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-171-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-166-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-165-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-162-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-161-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-160-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-159-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-154-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-153-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-145-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-146-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-119-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-118-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-120-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-70-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-126-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1424-76-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-127-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-77-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-80-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-81-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1424-122-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1424-125-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1780-94-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1780-88-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1780-85-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3288-130-0x0000000005160000-0x000000000516A000-memory.dmp

    Filesize

    40KB

  • memory/3288-131-0x0000000005180000-0x000000000518E000-memory.dmp

    Filesize

    56KB

  • memory/3288-116-0x0000000000600000-0x00000000006A8000-memory.dmp

    Filesize

    672KB

  • memory/3288-117-0x0000000004F90000-0x0000000004FA2000-memory.dmp

    Filesize

    72KB

  • memory/3288-132-0x0000000005480000-0x00000000054FA000-memory.dmp

    Filesize

    488KB

  • memory/3792-91-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3792-93-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3792-90-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3976-62-0x0000000007030000-0x00000000070C6000-memory.dmp

    Filesize

    600KB

  • memory/3976-65-0x0000000006FF0000-0x0000000007004000-memory.dmp

    Filesize

    80KB

  • memory/3976-16-0x0000000074ED0000-0x0000000075680000-memory.dmp

    Filesize

    7.7MB

  • memory/3976-22-0x0000000005370000-0x00000000053D6000-memory.dmp

    Filesize

    408KB

  • memory/3976-44-0x0000000005A90000-0x0000000005AAE000-memory.dmp

    Filesize

    120KB

  • memory/3976-23-0x0000000074ED0000-0x0000000075680000-memory.dmp

    Filesize

    7.7MB

  • memory/3976-20-0x0000000004AD0000-0x0000000004AF2000-memory.dmp

    Filesize

    136KB

  • memory/3976-73-0x0000000074ED0000-0x0000000075680000-memory.dmp

    Filesize

    7.7MB

  • memory/3976-67-0x00000000070D0000-0x00000000070D8000-memory.dmp

    Filesize

    32KB

  • memory/3976-66-0x00000000070F0000-0x000000000710A000-memory.dmp

    Filesize

    104KB

  • memory/3976-45-0x0000000005AC0000-0x0000000005B0C000-memory.dmp

    Filesize

    304KB

  • memory/3976-17-0x0000000004C60000-0x0000000005288000-memory.dmp

    Filesize

    6.2MB

  • memory/3976-21-0x0000000005300000-0x0000000005366000-memory.dmp

    Filesize

    408KB

  • memory/3976-46-0x0000000006060000-0x0000000006092000-memory.dmp

    Filesize

    200KB

  • memory/3976-47-0x0000000075760000-0x00000000757AC000-memory.dmp

    Filesize

    304KB

  • memory/3976-19-0x0000000074ED0000-0x0000000075680000-memory.dmp

    Filesize

    7.7MB

  • memory/3976-15-0x0000000000D10000-0x0000000000D46000-memory.dmp

    Filesize

    216KB

  • memory/3976-64-0x0000000006FE0000-0x0000000006FEE000-memory.dmp

    Filesize

    56KB

  • memory/3976-63-0x0000000006FB0000-0x0000000006FC1000-memory.dmp

    Filesize

    68KB

  • memory/3976-61-0x0000000006E20000-0x0000000006E2A000-memory.dmp

    Filesize

    40KB

  • memory/3976-60-0x0000000006DA0000-0x0000000006DBA000-memory.dmp

    Filesize

    104KB

  • memory/3976-59-0x0000000007450000-0x0000000007ACA000-memory.dmp

    Filesize

    6.5MB

  • memory/3976-58-0x0000000006A80000-0x0000000006B23000-memory.dmp

    Filesize

    652KB

  • memory/3976-57-0x0000000006040000-0x000000000605E000-memory.dmp

    Filesize

    120KB

  • memory/4416-89-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4416-92-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4416-87-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4876-141-0x0000000006030000-0x000000000603A000-memory.dmp

    Filesize

    40KB

  • memory/4876-140-0x0000000005720000-0x000000000573E000-memory.dmp

    Filesize

    120KB

  • memory/4876-139-0x0000000005410000-0x000000000541A000-memory.dmp

    Filesize

    40KB

  • memory/4876-133-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB