Analysis
- max time kernel
149s - max time network
155s - platform
windows10-ltsc 2021_x64 - resource
win10ltsc2021-20250217-en - resource tags
- submitted
11/03/2025, 16:14
General
- Target coderoom-main/crossings.exe
- Size 487KB
- Sample250311-tp2gvsxpv2
- SHA256 c0297a465ab62db781cd06295004e14eac2d87905b5015b1cc02b446a34bf042
Malware Config
Extracted
-
remcos
-
firefox tsms
-
91.135.156.200:8109
-
audio_folder
Ìèêðîôîííûå çàïèñè
-
audio_path
ApplicationPath
-
audio_record_time
5
-
connect_delay
0
-
connect_interval
1
-
copy_file
firefox tsm.exe
-
copy_folder
firefox tsm
-
delete_file
true
-
hide_file
true
-
hide_keylog_file
true
-
install_flag
true
-
install_path
%AppData%
-
keylog_crypt
true
-
keylog_file
temp.dat
-
keylog_flag
false
-
keylog_folder
data firewall
-
keylog_path
%AppData%
-
mouse_option
false
-
mutex
Ðìê-QPMRI0
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Ñêðèíøîòû
-
screenshot_path
%AppData%
-
screenshot_time
10
- startup_value
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Remcos family
- Adds policy Run key to start application 2 TTPs 6 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 6 IoCs
- Suspicious use of SetThreadContext 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 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry class 1 IoCs
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\coderoom-main\crossings.exe"C:\Users\Admin\AppData\Local\Temp\coderoom-main\crossings.exe"1⤵
- Adds policy Run key to start application
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\firefox tsm\firefox tsm.exe"C:\Users\Admin\AppData\Roaming\firefox tsm\firefox tsm.exe"2⤵
- Adds policy Run key to start application
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
\??\c:\program files (x86)\internet explorer\iexplore.exe"c:\program files (x86)\internet explorer\iexplore.exe"3⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rmclient.exermclient.exe4⤵
-
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
temp.dat
firefox tsm.exe
memory/1440-41-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-49-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-8-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-11-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-3-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-2-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-16-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-17-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-18-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-19-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-20-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-21-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-22-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-25-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-26-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-27-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-28-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-29-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-30-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-31-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-32-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-34-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-35-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-36-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-37-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-38-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-39-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-40-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-1-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-46-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-7-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-44-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-43-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-47-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-48-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-45-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-50-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-51-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-53-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-54-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-55-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-56-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-57-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-58-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-59-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-60-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-62-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-63-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-64-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-65-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-66-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-67-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-68-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-69-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-71-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-72-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/1440-73-0x0000000000F00000-0x0000000000F81000-memory.dmp
memory/4908-12-0x0000000000400000-0x0000000000481000-memory.dmp
memory/4908-14-0x0000000000400000-0x0000000000481000-memory.dmp
memory/4908-15-0x0000000000400000-0x0000000000481000-memory.dmp
memory/4908-13-0x0000000000400000-0x0000000000481000-memory.dmp