Analysis
- max time kernel
148s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
02/11/2026, 13:32
General
- Target New Company Request_7e77e.JS.js
- Size 4.8MB
- Sample261102-qs3ybaat7v
- SHA256 13cdb327d6e653416650c1abfa768b46908df46d146a1ab73476339fc055a9eb
Malware Config
Extracted
-
remcos
-
7.3.1 Pro
-
RemoteHost
-
www.emergency-leave.com:2404
-
www.emergency-leavebackup.com:2404
-
www.emergency-leavebackup1.com:2404
-
www.emergency-leavebackup2.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
remcos
-
mouse_option
false
-
mutex
Rmc-ILZ5WO
-
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 WriteProcessMemory 3 IoCs
- outlook_office_path 1 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe "C:\Users\Admin\AppData\Local\Temp\New Company Request_7e77e.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\New Company Request_7e77e.JS.js:Zone.Identifier"2⤵
- Executes a command shell one-liner
- NTFS ADS
-
-
C:\Users\Admin\Documents\WKPKQRFSYIKMNXPV.exe"C:\Users\Admin\Documents\WKPKQRFSYIKMNXPV.exe" C:\Users\Admin\Documents\VPXNMKIYSFRQKPKW2⤵
- 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
- outlook_office_path
-
-
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\Documents\VPXNMKIYSFRQKPKW.vbs"1⤵
- Executes a VBScript file via the Windows Script Host.
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\Documents\WKPKQRFSYIKMNXPV.exe"C:\Users\Admin\Documents\WKPKQRFSYIKMNXPV.exe" "C:\Users\Admin\Documents\VPXNMKIYSFRQKPKW"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
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
VPXNMKIYSFRQKPKW
VPXNMKIYSFRQKPKW.vbs
WKPKQRFSYIKMNXPV.exe
WKPKQRFSYIKMNXPV.mui
lua51.dll
memory/5688-82-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-84-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-81-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-79-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-83-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-86-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-87-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-80-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-85-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-76-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-75-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-69-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-78-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5688-77-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-60-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-51-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-37-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-38-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-35-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-36-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-34-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-39-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-40-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-41-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-44-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-43-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-42-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-48-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-61-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-22-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-59-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-58-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-57-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-56-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-55-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-63-0x00000000026D0000-0x0000000002779000-memory.dmp
memory/5932-54-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-53-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-52-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-21-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-50-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-47-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-46-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-62-0x00000000026D0000-0x00000000036D0000-memory.dmp
memory/5932-45-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-49-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-64-0x00000000025F0000-0x000000000269F000-memory.dmp
memory/5932-24-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-25-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-73-0x0000000180000000-0x000000018012C000-memory.dmp
memory/5932-74-0x0000000180000000-0x000000018012C000-memory.dmp
memory/5932-70-0x0000000180000000-0x000000018012C000-memory.dmp
memory/5932-26-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-27-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-30-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-31-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-32-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-33-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-28-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-29-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-23-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-18-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-17-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-15-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/5932-16-0x0000000057FD0000-0x0000000057FE0000-memory.dmp