Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-08-2024 01:07

General

  • Target

    1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe

  • Size

    927KB

  • MD5

    339dcd1a52b9095623e72c678f20ed01

  • SHA1

    a2bd542dcddefc2ece12e47b380bc343ead31604

  • SHA256

    1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60

  • SHA512

    06b4ab19a5cd8957d879ed141e9d9ad5a0c4898d2bb460f4796d2d04014a67a10fe00bc6243a8936c8ec1b9be7d6cf4ce1a8a6c278067e6ea86ed5a2d40150a7

  • SSDEEP

    24576:JBKlj3XZEwjwxSonfaM00VMNSfQ/woYhkToooZ:2ljHZncct7IoY9bZ

Malware Config

Extracted

Family

remcos

Botnet

BCV

C2

tvq3101.sytes.net:1974

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-9PFUGS

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • 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 2 IoCs

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

  • 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.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
    "C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1848
    • 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\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4896
    • C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
      "C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1772
      • C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
        C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe /stext "C:\Users\Admin\AppData\Local\Temp\knsizylxtzifttzwwyexbevrxadttz"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:3360
      • C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
        C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe /stext "C:\Users\Admin\AppData\Local\Temp\mhgtaqvrphakvavafjzrmrqiypmcmkuuk"
        3⤵
        • Suspicious use of UnmapMainImage
        PID:3368
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3368 -s 12
          4⤵
          • Program crash
          PID:224
      • C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
        C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe /stext "C:\Users\Admin\AppData\Local\Temp\xblma"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4796
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3368 -ip 3368
    1⤵
      PID:808

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      318B

      MD5

      f4f9340a7f5d32a75ffd669fd38b8275

      SHA1

      195733c1121ab1c13f505e369e54d24c0c8df3cc

      SHA256

      e6c34a21d8ed85e8c93385c6425dd7ff1437be2f8273251a3d73a099a14276e1

      SHA512

      af89abef66dfc614bb607cda7ca1288add4546675e356e88f69c6c4579ef89d98781d458ff40f3f9e1ec583a7a2c4710bdda8a8275552baca14349619812d3f9

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_41k2fcqu.snk.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      4KB

      MD5

      8b8277c8f03c24d1f290dbe476e961d2

      SHA1

      2e13baf3a4b708277d550dc3dd1e0f99b131f78e

      SHA256

      9af6881f6dbffba028a7a977f4c0a43c764f840332986993ad66de7b816c2f9e

      SHA512

      7367a0236cd0d6cd731caf1ba1f4ea8f851ea1018a9c6b49db6e9d13b2aaba92767774da9169481918e4287021ff5c3a58c3143eaa5e7fe9fa88383208615948

    • memory/1772-26-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-66-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-29-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-63-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-64-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-59-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-60-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-87-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-11-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-12-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-14-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-93-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-15-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-125-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-92-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/1772-123-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-113-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-122-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-121-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-114-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-88-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/1772-24-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-124-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-97-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-91-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/1772-106-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-39-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-105-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1772-98-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1848-6-0x00000000079F0000-0x0000000007A08000-memory.dmp

      Filesize

      96KB

    • memory/1848-9-0x0000000006070000-0x0000000006130000-memory.dmp

      Filesize

      768KB

    • memory/1848-10-0x0000000006330000-0x00000000063CC000-memory.dmp

      Filesize

      624KB

    • memory/1848-0-0x0000000074FDE000-0x0000000074FDF000-memory.dmp

      Filesize

      4KB

    • memory/1848-3-0x0000000004E20000-0x0000000004EB2000-memory.dmp

      Filesize

      584KB

    • memory/1848-16-0x0000000074FD0000-0x0000000075780000-memory.dmp

      Filesize

      7.7MB

    • memory/1848-1-0x0000000000330000-0x000000000041A000-memory.dmp

      Filesize

      936KB

    • memory/1848-8-0x0000000074FD0000-0x0000000075780000-memory.dmp

      Filesize

      7.7MB

    • memory/1848-5-0x0000000074FD0000-0x0000000075780000-memory.dmp

      Filesize

      7.7MB

    • memory/1848-4-0x0000000004E00000-0x0000000004E0A000-memory.dmp

      Filesize

      40KB

    • memory/1848-7-0x0000000074FDE000-0x0000000074FDF000-memory.dmp

      Filesize

      4KB

    • memory/1848-2-0x0000000005490000-0x0000000005A34000-memory.dmp

      Filesize

      5.6MB

    • memory/3360-74-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3360-79-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3360-76-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3368-75-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/4796-78-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4796-80-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4796-77-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4896-20-0x0000000004CB0000-0x00000000052D8000-memory.dmp

      Filesize

      6.2MB

    • memory/4896-73-0x0000000075050000-0x0000000075800000-memory.dmp

      Filesize

      7.7MB

    • memory/4896-70-0x0000000007170000-0x0000000007178000-memory.dmp

      Filesize

      32KB

    • memory/4896-67-0x0000000007080000-0x000000000708E000-memory.dmp

      Filesize

      56KB

    • memory/4896-69-0x0000000007190000-0x00000000071AA000-memory.dmp

      Filesize

      104KB

    • memory/4896-68-0x0000000007090000-0x00000000070A4000-memory.dmp

      Filesize

      80KB

    • memory/4896-62-0x0000000007050000-0x0000000007061000-memory.dmp

      Filesize

      68KB

    • memory/4896-61-0x00000000070D0000-0x0000000007166000-memory.dmp

      Filesize

      600KB

    • memory/4896-58-0x0000000006EC0000-0x0000000006ECA000-memory.dmp

      Filesize

      40KB

    • memory/4896-43-0x00000000060F0000-0x0000000006122000-memory.dmp

      Filesize

      200KB

    • memory/4896-56-0x0000000007490000-0x0000000007B0A000-memory.dmp

      Filesize

      6.5MB

    • memory/4896-57-0x0000000006E50000-0x0000000006E6A000-memory.dmp

      Filesize

      104KB

    • memory/4896-44-0x0000000070AC0000-0x0000000070B0C000-memory.dmp

      Filesize

      304KB

    • memory/4896-55-0x0000000006D20000-0x0000000006DC3000-memory.dmp

      Filesize

      652KB

    • memory/4896-54-0x0000000006D00000-0x0000000006D1E000-memory.dmp

      Filesize

      120KB

    • memory/4896-42-0x0000000005B70000-0x0000000005BBC000-memory.dmp

      Filesize

      304KB

    • memory/4896-41-0x0000000005B20000-0x0000000005B3E000-memory.dmp

      Filesize

      120KB

    • memory/4896-40-0x0000000005610000-0x0000000005964000-memory.dmp

      Filesize

      3.3MB

    • memory/4896-23-0x0000000004C00000-0x0000000004C66000-memory.dmp

      Filesize

      408KB

    • memory/4896-25-0x00000000052E0000-0x0000000005346000-memory.dmp

      Filesize

      408KB

    • memory/4896-22-0x0000000004B60000-0x0000000004B82000-memory.dmp

      Filesize

      136KB

    • memory/4896-21-0x0000000075050000-0x0000000075800000-memory.dmp

      Filesize

      7.7MB

    • memory/4896-18-0x0000000002200000-0x0000000002236000-memory.dmp

      Filesize

      216KB

    • memory/4896-19-0x0000000075050000-0x0000000075800000-memory.dmp

      Filesize

      7.7MB

    • memory/4896-17-0x000000007505E000-0x000000007505F000-memory.dmp

      Filesize

      4KB