Analysis
- max time kernel
150s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
17/10/2024, 06:02
General
- Target PO OCTOBER 2024 _ PDF.exe
- Size 1.0MB
- Sample241017-grfa7avflf
- SHA256 e3fe07f87b41a5b796c4bf9d657c482367668ea4de33fa86bf6bc75b9904357f
Malware Config
Extracted
-
remcos
-
RemoteHost
-
162.251.122.111:2404
-
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
remcos
-
mouse_option
false
-
mutex
Rmc-JXEKG5
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
screenshot_path
%AppData%
-
screenshot_time
10
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Detected Nirsoft tools 9 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
- NirSoft MailPassView 3 IoCs
Password recovery tool for various email clients
- NirSoft WebBrowserPassView 3 IoCs
Password recovery tool for various web browsers
- Loads dropped DLL 1 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 4 IoCs
- Drops file in Windows directory 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 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious behavior: MapViewOfSection 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PO OCTOBER 2024 _ PDF.exe"C:\Users\Admin\AppData\Local\Temp\PO OCTOBER 2024 _ PDF.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\PO OCTOBER 2024 _ PDF.exe"C:\Users\Admin\AppData\Local\Temp\PO OCTOBER 2024 _ PDF.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\PO OCTOBER 2024 _ PDF.exe"C:\Users\Admin\AppData\Local\Temp\PO OCTOBER 2024 _ PDF.exe" /stext "C:\Users\Admin\AppData\Local\Temp\gszqacfafwv"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\PO OCTOBER 2024 _ PDF.exe"C:\Users\Admin\AppData\Local\Temp\PO OCTOBER 2024 _ PDF.exe" /stext "C:\Users\Admin\AppData\Local\Temp\rmmabuqttenexr"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\PO OCTOBER 2024 _ PDF.exe"C:\Users\Admin\AppData\Local\Temp\PO OCTOBER 2024 _ PDF.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tortcnavhmfrhfphnl"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
gszqacfafwv
System.dll
memory/1084-33-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1084-37-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1084-31-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1084-36-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1084-35-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1636-39-0x0000000000400000-0x0000000000424000-memory.dmp
memory/1636-43-0x0000000000400000-0x0000000000424000-memory.dmp
memory/1636-44-0x0000000000400000-0x0000000000424000-memory.dmp
memory/1636-45-0x0000000000400000-0x0000000000424000-memory.dmp
memory/1636-46-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3192-50-0x0000000000400000-0x0000000000478000-memory.dmp
memory/3192-30-0x0000000000400000-0x0000000000478000-memory.dmp
memory/3192-32-0x0000000000400000-0x0000000000478000-memory.dmp
memory/3192-38-0x0000000000400000-0x0000000000478000-memory.dmp
memory/3192-34-0x0000000000400000-0x0000000000478000-memory.dmp
memory/3824-16-0x0000000010004000-0x0000000010005000-memory.dmp
memory/3824-14-0x00000000032E0000-0x0000000004805000-memory.dmp
memory/3824-15-0x0000000077C61000-0x0000000077D81000-memory.dmp
memory/3824-17-0x00000000032E0000-0x0000000004805000-memory.dmp
memory/4708-26-0x00000000016D0000-0x0000000002BF5000-memory.dmp
memory/4708-25-0x0000000077C61000-0x0000000077D81000-memory.dmp
memory/4708-21-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4708-20-0x0000000077D05000-0x0000000077D06000-memory.dmp
memory/4708-19-0x0000000077CE8000-0x0000000077CE9000-memory.dmp
memory/4708-58-0x0000000033BA0000-0x0000000033BB9000-memory.dmp
memory/4708-57-0x0000000033BA0000-0x0000000033BB9000-memory.dmp
memory/4708-54-0x0000000033BA0000-0x0000000033BB9000-memory.dmp
memory/4708-53-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4708-61-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4708-64-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4708-18-0x00000000016D0000-0x0000000002BF5000-memory.dmp
memory/4708-67-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4708-70-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4708-73-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4708-76-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4708-79-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4708-82-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4708-94-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4708-97-0x0000000000470000-0x00000000016C4000-memory.dmp