Analysis
- max time kernel
149s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
10/11/2026, 10:32
General
- Target dokument o zvýšení platu.JS.js
- Size 4.8MB
- Sample261110-mk49maef65
- SHA256 a24b8001e53e0953a20036a350dda2ea8756198a8844e0775030a42cff42afc5
Malware Config
Extracted
-
remcos
-
7.3.1 Pro
-
Host
-
huhesd.duckdns.org:2404
-
huhesd.duckdns.org:2430
-
huhesd.duckdns.org:2490
-
hopeylp.duckdns.org:2490
-
hopeylp.duckdns.org:2430
-
hopeylp.duckdns.org: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-YJ8RTE
-
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 3 IoCs
Network activity triggered a Suricata alert
- Suricata alert: REMCOS RAT Malware Outbound C2 Communication 7 IoCs
Network activity triggered a Suricata alert
- Detects DonutLoader 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 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.
- NTFS ADS 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe "C:\Users\Admin\AppData\Local\Temp\dokument o zvýšení platu.JS.js"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c echo. > "C:\Users\Admin\AppData\Local\Temp\dokument o zvýšení platu.JS.js:Zone.Identifier"2⤵
- Executes a command shell one-liner
- NTFS ADS
-
-
C:\Users\Admin\Documents\UNEAUBPPWGZMCRMI.exe"C:\Users\Admin\Documents\UNEAUBPPWGZMCRMI.exe" C:\Users\Admin\Documents\IMRCMZGWPPBUAENU2⤵
- Suricata alert: REMCOS RAT Malware Inbound C2 Communication
- Suricata alert: REMCOS RAT Malware Outbound C2 Communication
- Executes dropped EXE
- Loads dropped DLL
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
IMRCMZGWPPBUAENU
UNEAUBPPWGZMCRMI.exe
lua51.dll
memory/4144-14-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-15-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-16-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-17-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-22-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-21-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-20-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-19-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-18-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-24-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-27-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-23-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-26-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-25-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-30-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-31-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-32-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-29-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-28-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-33-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-34-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-35-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-38-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-37-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-36-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-45-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-55-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-56-0x0000000002450000-0x0000000003450000-memory.dmp
memory/4144-57-0x0000000002450000-0x00000000024F9000-memory.dmp
memory/4144-58-0x00000000143D0000-0x000000001447F000-memory.dmp
memory/4144-49-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-54-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-53-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-52-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-51-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-50-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-48-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-47-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-46-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-44-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-43-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-42-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-41-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-40-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-39-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/4144-59-0x0000000180000000-0x000000018012C000-memory.dmp
memory/4144-62-0x0000000180000000-0x000000018012C000-memory.dmp
memory/4144-63-0x0000000000400000-0x000000000040D000-memory.dmp
memory/4144-64-0x0000000066D80000-0x0000000066DF4000-memory.dmp
memory/4144-65-0x0000000180000000-0x000000018012C000-memory.dmp