Analysis
- max time kernel
114s - max time network
123s - platform
windows10-2004_x64 - resource
win10v2004-20240709-en - resource tags
- submitted
16/07/2024, 07:53
General
- Target 8e64849a5b699977089a7b2df431c8d0N.exe
- Size 2.0MB
- Sample240716-jraf2svdng
- SHA256 04523be06463dd6c1f8047c3357b365b6a6acc80be86e707c6a4cb3f8abdf16d
Malware Config
Extracted
-
remcos
-
1.7 Pro
-
Host
-
213.183.58.19:4000
-
audio_folder
audio
-
audio_path
%AppData%
-
audio_record_time
5
-
connect_delay
0
-
connect_interval
5
-
copy_file
remcos.exe
-
copy_folder
remcos
-
delete_file
false
-
hide_file
false
-
hide_keylog_file
true
-
install_flag
false
-
install_path
%AppData%
-
keylog_crypt
true
-
keylog_file
read.dat
-
keylog_flag
false
-
keylog_folder
CastC
-
keylog_path
%AppData%
-
mouse_option
false
-
mutex
remcos_sccafsoidz
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screens
-
screenshot_path
%AppData%
-
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 2 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).
- 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\8e64849a5b699977089a7b2df431c8d0N.exe"C:\Users\Admin\AppData\Local\Temp\8e64849a5b699977089a7b2df431c8d0N.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- 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"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- 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
- Suspicious use of SetWindowsHookEx
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
sbietrcl.exe
memory/712-0-0x0000000074E72000-0x0000000074E73000-memory.dmp
memory/712-1-0x0000000074E70000-0x0000000075421000-memory.dmp
memory/712-2-0x0000000074E70000-0x0000000075421000-memory.dmp
memory/712-5-0x0000000074E70000-0x0000000075421000-memory.dmp
memory/712-6-0x0000000074E70000-0x0000000075421000-memory.dmp
memory/712-28-0x0000000074E70000-0x0000000075421000-memory.dmp
memory/1308-30-0x0000000074E70000-0x0000000075421000-memory.dmp
memory/1308-29-0x0000000074E70000-0x0000000075421000-memory.dmp
memory/1308-31-0x0000000074E70000-0x0000000075421000-memory.dmp
memory/1308-43-0x0000000074E70000-0x0000000075421000-memory.dmp
memory/2160-32-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2160-35-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2160-36-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2160-39-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2160-40-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2160-42-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2160-46-0x0000000000400000-0x0000000000417000-memory.dmp