Analysis
- max time kernel
148s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
08/05/2026, 11:35
General
- Target Confirmation Transfer Copy-MT103_Xls.exe
- Size 802KB
- Sample260508-np72ragt2v
- SHA256 75e48d7a8c1953a4336f5f617dc9c5c4ca52e2d21206f77359cf494004b6fa07
Malware Config
Extracted
-
remcos
-
7.2.4 Pro
-
NoStartupDark
-
163.61.182.8:2245
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audio_folder
MicRecords
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audio_path
ApplicationPath
-
audio_record_time
5
-
connect_delay
0
-
connect_interval
1
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copy_file
logs
-
delete_file
false
-
hide_file
false
-
hide_keylog_file
false
-
install_flag
false
-
keylog_crypt
false
-
keylog_file
logs.dat
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keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-7VXEG8
-
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: Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Family: Remcos
Remcos is a closed-source remote control and surveillance software.
- Loads dropped DLL 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Drops file in Windows directory 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy-MT103_Xls.exe"C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy-MT103_Xls.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy-MT103_Xls.exe"C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy-MT103_Xls.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy-MT103_Xls.exe"C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy-MT103_Xls.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy-MT103_Xls.exe"C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy-MT103_Xls.exe"3⤵
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
System.dll
memory/804-41-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-49-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-61-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-59-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-28-0x0000000001B40000-0x0000000003E16000-memory.dmp
memory/804-29-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-30-0x0000000033820000-0x00000000338E1000-memory.dmp
memory/804-31-0x0000000001B40000-0x0000000003E16000-memory.dmp
memory/804-57-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-55-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-47-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-45-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-43-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-36-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-51-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/804-53-0x0000000000820000-0x0000000001B37000-memory.dmp
memory/1432-25-0x0000000074215000-0x0000000074216000-memory.dmp
memory/1432-24-0x0000000004910000-0x0000000006BE6000-memory.dmp
memory/1432-27-0x0000000004910000-0x0000000006BE6000-memory.dmp
memory/1432-26-0x0000000002640000-0x0000000002701000-memory.dmp