Analysis
- max time kernel
329s - max time network
331s - platform
windows10-2004_x64 - resource
win10v2004-20240704-en - resource tags
- submitted
09/07/2024, 15:24
General
- Target FPTGUI-WINx64.exe
- Size 1.6MB
- Sample240709-ss1jassand
- SHA256 ccde784513454a21570e6f9cdb479dbdb5af4175fd0a396b3a8d5cec7b6fad20
Malware Config
Extracted
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remcos
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sss333
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aero9just.online:1888
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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
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
false
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
-67NXJD
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 5 IoCs
- Loads dropped DLL 31 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 25 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\FPTGUI-WINx64.exe"C:\Users\Admin\AppData\Local\Temp\FPTGUI-WINx64.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-8UVAI.tmp\FPTGUI-WINx64.tmp"C:\Users\Admin\AppData\Local\Temp\is-8UVAI.tmp\FPTGUI-WINx64.tmp" /SL5="$7006C,814592,0,C:\Users\Admin\AppData\Local\Temp\FPTGUI-WINx64.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\FPTGUI-WINx64.exe"C:\Users\Admin\AppData\Local\Temp\FPTGUI-WINx64.exe" /VERYSILENT3⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-BIUJD.tmp\FPTGUI-WINx64.tmp"C:\Users\Admin\AppData\Local\Temp\is-BIUJD.tmp\FPTGUI-WINx64.tmp" /SL5="$8006C,814592,0,C:\Users\Admin\AppData\Local\Temp\FPTGUI-WINx64.exe" /VERYSILENT4⤵
- Checks computer location settings
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\GUIfptw64.exe"C:\Users\Admin\AppData\Roaming\GUIfptw64.exe"5⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 11926⤵
- Program crash
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C:\Users\Admin\AppData\Roaming\rustdesk.exe"C:\Users\Admin\AppData\Roaming\rustdesk.exe"5⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\firefoxHost\rustdesk.exeC:\Users\Admin\AppData\Roaming\firefoxHost\rustdesk.exe6⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\SysWOW64\cmd.exe7⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe8⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1916 -ip 19161⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
FPTGUI-WINx64.tmp
_isdecmp.dll
GUIfptw64.exe
aventurine.avi
desktop_drop_plugin.dll
desktop_multi_window_plugin.dll
file_selector_windows_plugin.dll
flutter_custom_cursor_plugin.dll
flutter_gpu_texture_renderer_plugin.dll
flutter_windows.dll
rustdesk.exe
screen_retriever_plugin.dll
texture_rgba_renderer_plugin.dll
uni_links_desktop_plugin.dll
url_launcher_windows_plugin.dll
window_manager_plugin.dll
window_size_plugin.dll
memory/880-177-0x00007FFE11780000-0x00007FFE118F2000-memory.dmp
memory/880-19-0x0000000000400000-0x0000000000710000-memory.dmp
memory/880-178-0x00007FFE11780000-0x00007FFE118F2000-memory.dmp
memory/880-6-0x0000000000400000-0x0000000000710000-memory.dmp
memory/1140-132-0x00007FFE114C0000-0x00007FFE11632000-memory.dmp
memory/1348-0-0x0000000000400000-0x00000000004D4000-memory.dmp
memory/1348-21-0x0000000000400000-0x00000000004D4000-memory.dmp
memory/1348-2-0x0000000000401000-0x00000000004B7000-memory.dmp
memory/1916-69-0x00000000053F0000-0x0000000005994000-memory.dmp
memory/1916-71-0x0000000004E00000-0x0000000004E0A000-memory.dmp
memory/1916-70-0x0000000004EE0000-0x0000000004F72000-memory.dmp
memory/1916-68-0x0000000000520000-0x0000000000548000-memory.dmp
memory/3032-17-0x0000000000400000-0x00000000004D4000-memory.dmp
memory/3032-129-0x0000000000400000-0x00000000004D4000-memory.dmp
memory/3032-15-0x0000000000400000-0x00000000004D4000-memory.dmp
memory/3032-72-0x0000000000400000-0x00000000004D4000-memory.dmp
memory/4456-180-0x00007FFE2F1F0000-0x00007FFE2F3E5000-memory.dmp
memory/4456-181-0x0000000074DB0000-0x0000000074F2B000-memory.dmp
memory/4456-183-0x0000000074DB0000-0x0000000074F2B000-memory.dmp
memory/4792-186-0x0000000000900000-0x0000000000984000-memory.dmp
memory/4792-185-0x00007FFE2F1F0000-0x00007FFE2F3E5000-memory.dmp
memory/4792-189-0x0000000000900000-0x0000000000984000-memory.dmp
memory/4792-190-0x0000000000900000-0x0000000000984000-memory.dmp
memory/4792-191-0x0000000000900000-0x0000000000984000-memory.dmp
memory/4792-192-0x0000000000900000-0x0000000000984000-memory.dmp
memory/4792-193-0x0000000000900000-0x0000000000984000-memory.dmp
memory/4792-195-0x0000000000900000-0x0000000000984000-memory.dmp
memory/4792-205-0x0000000000900000-0x0000000000984000-memory.dmp
memory/5088-126-0x0000000000400000-0x0000000000710000-memory.dmp
memory/5088-73-0x0000000000400000-0x0000000000710000-memory.dmp
memory/5088-27-0x0000000000400000-0x0000000000710000-memory.dmp