Analysis
- max time kernel
114s - max time network
121s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
17/10/2024, 01:57
General
- Target d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe
- Size 2.0MB
- Sample241017-cdarbswemd
- SHA256 d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221
Malware Config
Extracted
-
remcos
-
1.7 Pro
-
Host
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213.183.58.19:4000
-
audio_folder
audio
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audio_path
%AppData%
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audio_record_time
5
-
connect_delay
0
-
connect_interval
5
-
copy_file
remcos.exe
-
copy_folder
remcos
-
delete_file
false
-
hide_file
false
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hide_keylog_file
true
-
install_flag
false
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install_path
%AppData%
-
keylog_crypt
true
-
keylog_file
read.dat
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keylog_flag
false
-
keylog_folder
CastC
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keylog_path
%AppData%
-
mouse_option
false
-
mutex
remcos_sccafsoidz
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screens
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screenshot_path
%AppData%
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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
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 12 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe"C:\Users\Admin\AppData\Local\Temp\d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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
- System Location Discovery: System Language Discovery
- 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
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
-
-
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
sbietrcl.exe
memory/2096-30-0x0000000074A50000-0x0000000075001000-memory.dmp
memory/2096-1-0x0000000074A50000-0x0000000075001000-memory.dmp
memory/2096-2-0x0000000074A50000-0x0000000075001000-memory.dmp
memory/2096-5-0x0000000074A50000-0x0000000075001000-memory.dmp
memory/2096-6-0x0000000074A50000-0x0000000075001000-memory.dmp
memory/2096-18-0x0000000074A52000-0x0000000074A53000-memory.dmp
memory/2096-19-0x0000000074A50000-0x0000000075001000-memory.dmp
memory/2096-0-0x0000000074A52000-0x0000000074A53000-memory.dmp
memory/3568-42-0x0000000000400000-0x0000000000417000-memory.dmp
memory/3568-35-0x0000000000400000-0x0000000000417000-memory.dmp
memory/3568-38-0x0000000000400000-0x0000000000417000-memory.dmp
memory/3568-45-0x0000000000400000-0x0000000000417000-memory.dmp
memory/3568-43-0x0000000000400000-0x0000000000417000-memory.dmp
memory/3568-39-0x0000000000400000-0x0000000000417000-memory.dmp
memory/3568-49-0x0000000000400000-0x0000000000417000-memory.dmp
memory/4376-32-0x0000000074A50000-0x0000000075001000-memory.dmp
memory/4376-33-0x0000000074A50000-0x0000000075001000-memory.dmp
memory/4376-34-0x0000000074A50000-0x0000000075001000-memory.dmp
memory/4376-31-0x0000000074A50000-0x0000000075001000-memory.dmp
memory/4376-46-0x0000000074A50000-0x0000000075001000-memory.dmp