Analysis
- max time kernel
140s - max time network
124s - platform
windows10-2004_x64 - resource
win10v2004-20240709-en - resource tags
- submitted
23/07/2024, 01:43
General
- Target 317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe
- Size 2.0MB
- Sample240723-b5jyms1cml
- SHA256 317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985
Malware Config
Extracted
-
remcos
-
Host
-
213.183.58.19:4000
-
audio_folder
audio
-
audio_path
%AppData%
-
audio_record_time
5
-
connect_delay
0
-
connect_interval
5
-
copy_file
remcos.exe
-
copy_folder
remcos
-
delete_file
false
-
hide_file
false
-
hide_keylog_file
true
-
install_flag
false
-
install_path
%AppData%
-
keylog_crypt
true
-
keylog_file
read.dat
-
keylog_flag
false
-
keylog_folder
CastC
-
keylog_path
%AppData%
-
mouse_option
false
-
mutex
remcos_sccafsoidz
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screens
-
screenshot_path
%AppData%
-
screenshot_time
1
-
startup_value
remcos
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- 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 2 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 12 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe"C:\Users\Admin\AppData\Local\Temp\317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
sbietrcl.exe
memory/232-35-0x00000000001C0000-0x00000000001D7000-memory.dmp
memory/4800-29-0x0000000075480000-0x0000000075A31000-memory.dmp
memory/4800-39-0x0000000075480000-0x0000000075A31000-memory.dmp
memory/4800-32-0x0000000075480000-0x0000000075A31000-memory.dmp
memory/4800-31-0x0000000075480000-0x0000000075A31000-memory.dmp
memory/4800-30-0x0000000075480000-0x0000000075A31000-memory.dmp
memory/5052-5-0x0000000075480000-0x0000000075A31000-memory.dmp
memory/5052-28-0x0000000075480000-0x0000000075A31000-memory.dmp
memory/5052-6-0x0000000075480000-0x0000000075A31000-memory.dmp
memory/5052-0-0x0000000075482000-0x0000000075483000-memory.dmp
memory/5052-2-0x0000000075480000-0x0000000075A31000-memory.dmp
memory/5052-1-0x0000000075480000-0x0000000075A31000-memory.dmp