Analysis
- max time kernel
150s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
27/07/2026, 00:59
General
- Target 0fbc7664bfc893f983376909f8df30b964d4b8b78934aa42e8e966670d3cf391.exe
- Size 585KB
- Sample260727-bcjr6stema
- SHA256 0fbc7664bfc893f983376909f8df30b964d4b8b78934aa42e8e966670d3cf391
Malware Config
Extracted
-
remcos
-
7.2.1 Pro
-
RemoteHost
-
107.175.246.30:2404
-
107.175.246.30:5000
-
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
true
-
keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-Y8INA4
-
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.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 5 IoCs
- Adds Run key to start application 2 TTPs 4 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
- Drops file in Program Files directory 4 IoCs
- Drops file in Windows directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\0fbc7664bfc893f983376909f8df30b964d4b8b78934aa42e8e966670d3cf391.exe"C:\Users\Admin\AppData\Local\Temp\0fbc7664bfc893f983376909f8df30b964d4b8b78934aa42e8e966670d3cf391.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\0fbc7664bfc893f983376909f8df30b964d4b8b78934aa42e8e966670d3cf391.exe"C:\Users\Admin\AppData\Local\Temp\0fbc7664bfc893f983376909f8df30b964d4b8b78934aa42e8e966670d3cf391.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\0fbc7664bfc893f983376909f8df30b964d4b8b78934aa42e8e966670d3cf391.exe"C:\Users\Admin\AppData\Local\Temp\0fbc7664bfc893f983376909f8df30b964d4b8b78934aa42e8e966670d3cf391.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\0fbc7664bfc893f983376909f8df30b964d4b8b78934aa42e8e966670d3cf391.exe"C:\Users\Admin\AppData\Local\Temp\0fbc7664bfc893f983376909f8df30b964d4b8b78934aa42e8e966670d3cf391.exe"3⤵
-
-
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"4⤵
- Executes dropped EXE
-
-
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"4⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"5⤵
- Executes dropped EXE
-
-
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
remcos.exe
24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
B3513D73A177A2707D910183759B389B_7DD27661FE660D16AA99AE0402116C4E
DDE8B1B7E253A9758EC380BD648952AF_DF1A6565DCD908C2FD1C90E4018E7B7A
24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
B3513D73A177A2707D910183759B389B_7DD27661FE660D16AA99AE0402116C4E
DDE8B1B7E253A9758EC380BD648952AF_DF1A6565DCD908C2FD1C90E4018E7B7A
System.dll
tmaz.ini
memory/1156-28-0x0000000004E60000-0x0000000006091000-memory.dmp
memory/1156-27-0x0000000074A45000-0x0000000074A46000-memory.dmp
memory/1156-26-0x0000000004E60000-0x0000000006091000-memory.dmp
memory/1708-31-0x0000000077E05000-0x0000000077E06000-memory.dmp
memory/1708-56-0x0000000001740000-0x0000000002971000-memory.dmp
memory/1708-42-0x00000000004E0000-0x0000000001734000-memory.dmp
memory/1708-41-0x0000000001740000-0x0000000002971000-memory.dmp
memory/1708-30-0x0000000077E89000-0x0000000077E8A000-memory.dmp
memory/1708-29-0x0000000077DE8000-0x0000000077DE9000-memory.dmp
memory/3488-110-0x00000000004E0000-0x0000000001734000-memory.dmp