Analysis
- max time kernel
148s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
11/05/2024, 01:37
General
- Target 8ab3fd118f9c8b251b57af13530f3453e1be5a75ee258f51d31b5d49346f1d31.exe
- Size 819KB
- Sample240511-b168daea21
- SHA256 8ab3fd118f9c8b251b57af13530f3453e1be5a75ee258f51d31b5d49346f1d31
Malware Config
Extracted
-
remcos
-
RemoteHost
-
oceansss.duckdns.org:1144
-
audio_folder
MicRecords
-
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
false
-
keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
fgdghrd
-
mouse_option
false
-
mutex
Rmc-O8FLSY
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
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) 15 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Script User-Agent 2 IoCs
Uses user-agent string associated with script host/environment.
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\8ab3fd118f9c8b251b57af13530f3453e1be5a75ee258f51d31b5d49346f1d31.exe"C:\Users\Admin\AppData\Local\Temp\8ab3fd118f9c8b251b57af13530f3453e1be5a75ee258f51d31b5d49346f1d31.exe"1⤵
- Adds Run key to start application
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\extrac32.exeC:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\8ab3fd118f9c8b251b57af13530f3453e1be5a75ee258f51d31b5d49346f1d31.exe C:\\Users\\Public\\Libraries\\Obpbjqsr.PIF2⤵
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
memory/4896-15-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-23-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-11-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-7-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-13-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-14-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-12-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-0-0x0000000000AE0000-0x0000000000AE1000-memory.dmp
memory/4896-8-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-17-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-22-0x0000000000AE0000-0x0000000000AE1000-memory.dmp
memory/4896-24-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-6-0x0000000000400000-0x00000000004D5000-memory.dmp
memory/4896-34-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-45-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-46-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-56-0x0000000033810000-0x0000000034810000-memory.dmp
memory/4896-57-0x0000000033810000-0x0000000034810000-memory.dmp