Analysis
- max time kernel
148s - max time network
143s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
02/11/2026, 13:32
General
- Target Company Request.JS.js
- Size 4.8MB
- Sample261102-qs383stybx
- SHA256 2a791d8bb1c588f9fb8c411605afc8c4e939e9aa25663e92968299f175c27443
Malware Config
Extracted
-
remcos
-
7.3.1 Pro
-
Test
-
kingremcos2026.duckdns.org:2404
-
www.kingmethodclassprojectnow.com:2404
-
www.kingmethodclassprojectnowbackup.com:2404
-
www.kingmethodclassprojectnowbackup1.com:2404
-
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
folder
-
mouse_option
false
-
mutex
Rmc-ZR4RL9
-
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: DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
- Family: Remcos
Remcos is a closed-source remote control and surveillance software.
- Suricata alert: REMCOS RAT Malware Inbound C2 Communication 8 IoCs
Network activity triggered a Suricata alert
- Suricata alert: REMCOS RAT Malware Outbound C2 Communication 10 IoCs
Network activity triggered a Suricata alert
- Detects DonutLoader 2 IoCs
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 2 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 2 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- Modifies registry class 3 IoCs
- NTFS ADS 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
- outlook_office_path 1 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe "C:\Users\Admin\AppData\Local\Temp\Company Request.JS.js"1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c echo. > "C:\Users\Admin\AppData\Local\Temp\Company Request.JS.js:Zone.Identifier"2⤵
- Executes a command shell one-liner
- NTFS ADS
-
-
C:\Users\Admin\Documents\VEFFYDGNYCKHBOLW.exe"C:\Users\Admin\Documents\VEFFYDGNYCKHBOLW.exe" C:\Users\Admin\Documents\WLOBHKCYNGDYFFEV2⤵
- Suricata alert: REMCOS RAT Malware Inbound C2 Communication
- Suricata alert: REMCOS RAT Malware Outbound C2 Communication
- Executes dropped EXE
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of SetWindowsHookEx
- outlook_office_path
-
-
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\Documents\WLOBHKCYNGDYFFEV.vbs"1⤵
- Executes a VBScript file via the Windows Script Host.
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\Documents\VEFFYDGNYCKHBOLW.exe"C:\Users\Admin\Documents\VEFFYDGNYCKHBOLW.exe" "C:\Users\Admin\Documents\WLOBHKCYNGDYFFEV"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
-
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
3JavaScript
1Visual Basic
1Windows Command Shell
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
VEFFYDGNYCKHBOLW.exe
VEFFYDGNYCKHBOLW.mui
WLOBHKCYNGDYFFEV
WLOBHKCYNGDYFFEV.vbs
lua51.dll
memory/4656-77-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-83-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-75-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-76-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-73-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-78-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-79-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-81-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-82-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-74-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-84-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-80-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-71-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-70-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-68-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-69-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4656-72-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-57-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-43-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-34-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-40-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-39-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-41-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-42-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-61-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-60-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-59-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-58-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-36-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-56-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-55-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-54-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-53-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-52-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-51-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-50-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-49-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-48-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-46-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-44-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-35-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-47-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-45-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-62-0x00000000025F0000-0x00000000035F0000-memory.dmp
memory/5480-63-0x00000000025F0000-0x0000000002699000-memory.dmp
memory/5480-64-0x00000000144C0000-0x000000001456F000-memory.dmp
memory/5480-38-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-37-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-30-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-31-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-33-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-32-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-24-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-21-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-29-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-22-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-25-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-26-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-27-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-28-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-23-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-18-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-17-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-16-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5480-15-0x0000000057FD0000-0x0000000057FE0000-memory.dmp