Analysis
- max time kernel
148s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
10/07/2026, 03:13
General
- Target loader_b6182984655567f1.js
- Size 306KB
- Sample260710-dqq5hsdx2t
- SHA256 9ff18f1e02141c1ef02b3ae37c4d7d8508de00bf633c5a3fdc9a3ec0503e4e69
Malware Config
Extracted
-
remcos
-
7.2.6 Light
-
RemoteHost
-
fb88.style:443
-
audio_folder
MicRecords
-
audio_path
ApplicationPath
-
audio_record_time
5
-
connect_delay
4
-
connect_interval
4
-
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-19N64B
-
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.
- Executes dropped EXE 1 IoCs
- UPX packed file 17 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- 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 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\loader_b6182984655567f1.js1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\sihost.exe"C:\Users\Admin\AppData\Local\Temp\sihost.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
sihost.exe
memory/5564-7-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-9-0x0000000000489000-0x000000000048A000-memory.dmp
memory/5564-10-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-11-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-12-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-13-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-14-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-15-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-16-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-17-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-18-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-19-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-20-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-21-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-22-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-23-0x0000000000400000-0x000000000048A000-memory.dmp
memory/5564-24-0x0000000000400000-0x000000000048A000-memory.dmp