Analysis
- max time kernel
149s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
29/05/2024, 01:42
General
- Target 963c914d288dcc6fd4be76a109feecfe6ade32cb802ef799affed99c39f7185f.exe
- Size 878KB
- Sample240529-b4sjdseb73
- SHA256 963c914d288dcc6fd4be76a109feecfe6ade32cb802ef799affed99c39f7185f
Malware Config
Extracted
-
remcos
-
RemoteHost
-
kelvin654.duckdns.org:14563
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
-
copy_file
remcos.exe
-
copy_folder
Remcos
-
delete_file
false
-
hide_file
false
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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-0E35XZ
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
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screenshot_path
%AppData%
-
screenshot_time
10
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 22 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 4 IoCs
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 30 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\963c914d288dcc6fd4be76a109feecfe6ade32cb802ef799affed99c39f7185f.exe"C:\Users\Admin\AppData\Local\Temp\963c914d288dcc6fd4be76a109feecfe6ade32cb802ef799affed99c39f7185f.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\963c914d288dcc6fd4be76a109feecfe6ade32cb802ef799affed99c39f7185f.exe"C:\Users\Admin\AppData\Local\Temp\963c914d288dcc6fd4be76a109feecfe6ade32cb802ef799affed99c39f7185f.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\963c914d288dcc6fd4be76a109feecfe6ade32cb802ef799affed99c39f7185f.exe"C:\Users\Admin\AppData\Local\Temp\963c914d288dcc6fd4be76a109feecfe6ade32cb802ef799affed99c39f7185f.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
remcos.exe
memory/1580-43-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-40-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-64-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-63-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-56-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-55-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-72-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-48-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-47-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-37-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-71-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-36-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-41-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-79-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-34-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-44-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1580-42-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3204-12-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3204-29-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3204-11-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3204-15-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3204-14-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3620-9-0x0000000006840000-0x0000000006900000-memory.dmp
memory/3620-4-0x0000000075380000-0x0000000075B30000-memory.dmp
memory/3620-1-0x0000000000A40000-0x0000000000B22000-memory.dmp
memory/3620-24-0x0000000075380000-0x0000000075B30000-memory.dmp
memory/3620-2-0x0000000005AD0000-0x0000000006074000-memory.dmp
memory/3620-10-0x0000000006A00000-0x0000000006A9C000-memory.dmp
memory/3620-0-0x000000007538E000-0x000000007538F000-memory.dmp
memory/3620-8-0x0000000005730000-0x0000000005740000-memory.dmp
memory/3620-7-0x0000000005720000-0x000000000572C000-memory.dmp
memory/3620-6-0x00000000056F0000-0x0000000005706000-memory.dmp
memory/3620-3-0x0000000005410000-0x00000000054A2000-memory.dmp
memory/3620-5-0x00000000053E0000-0x00000000053EA000-memory.dmp
memory/3672-35-0x0000000075380000-0x0000000075B30000-memory.dmp
memory/3672-28-0x000000007538E000-0x000000007538F000-memory.dmp
memory/3672-30-0x0000000075380000-0x0000000075B30000-memory.dmp