Analysis
- max time kernel
149s - max time network
138s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
17/10/2024, 06:06
General
- Target POOCTOBER2024_PDF.exe
- Size 1.0MB
- Sample241017-gt4fssydnp
- 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 7 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
- NirSoft MailPassView 2 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\POOCTOBER2024_PDF.exe"C:\Users\Admin\AppData\Local\Temp\POOCTOBER2024_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\POOCTOBER2024_PDF.exe"C:\Users\Admin\AppData\Local\Temp\POOCTOBER2024_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\POOCTOBER2024_PDF.exeC:\Users\Admin\AppData\Local\Temp\POOCTOBER2024_PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\rxeeqqw"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\POOCTOBER2024_PDF.exeC:\Users\Admin\AppData\Local\Temp\POOCTOBER2024_PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\trjwrihtba"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\POOCTOBER2024_PDF.exeC:\Users\Admin\AppData\Local\Temp\POOCTOBER2024_PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\etwpsbsnpitibp"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
System.dll
rxeeqqw
memory/736-26-0x00000000016D0000-0x0000000002BF5000-memory.dmp
memory/736-54-0x0000000033BB0000-0x0000000033BC9000-memory.dmp
memory/736-66-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/736-19-0x0000000077B08000-0x0000000077B09000-memory.dmp
memory/736-20-0x0000000077B25000-0x0000000077B26000-memory.dmp
memory/736-63-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/736-25-0x0000000077A81000-0x0000000077BA1000-memory.dmp
memory/736-60-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/736-58-0x0000000033BB0000-0x0000000033BC9000-memory.dmp
memory/736-57-0x0000000033BB0000-0x0000000033BC9000-memory.dmp
memory/736-98-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/736-95-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/736-92-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/736-81-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/736-69-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/736-78-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/736-22-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/736-75-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/736-17-0x00000000016D0000-0x0000000002BF5000-memory.dmp
memory/736-72-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/904-15-0x0000000077A81000-0x0000000077BA1000-memory.dmp
memory/904-16-0x0000000010004000-0x0000000010005000-memory.dmp
memory/904-14-0x00000000030F0000-0x0000000004615000-memory.dmp
memory/904-18-0x00000000030F0000-0x0000000004615000-memory.dmp
memory/1584-34-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1584-42-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1584-32-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1584-30-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1584-51-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2812-35-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2812-33-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2812-41-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2812-31-0x0000000000400000-0x0000000000462000-memory.dmp
memory/3096-49-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3096-43-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3096-44-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3096-45-0x0000000000400000-0x0000000000424000-memory.dmp