Analysis
- max time kernel
149s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
17/05/2024, 01:38
General
- Target 823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a.exe
- Size 368KB
- Sample240517-b2s25sbf28
- SHA256 823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a
Malware Config
Extracted
-
remcos
-
RemoteHost
-
93.95.115.2:9462
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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
-
copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
-
hide_file
false
-
hide_keylog_file
false
-
install_flag
false
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keylog_crypt
false
-
keylog_file
logs.dat
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keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-VI6D4O
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screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
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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.
- Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 13 IoCs
- Detects executables built or packed with MPress PE compressor 17 IoCs
- Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 2 IoCs
- Detects executables referencing many email and collaboration clients. Observed in information stealers 2 IoCs
- NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
- NirSoft WebBrowserPassView 2 IoCs
Password recovery tool for various web browsers
- Nirsoft 6 IoCs
- Loads dropped DLL 1 IoCs
- Reads user/profile data of web browsers 2 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).
- 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\823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a.exe"C:\Users\Admin\AppData\Local\Temp\823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a.exe"C:\Users\Admin\AppData\Local\Temp\823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a.exeC:\Users\Admin\AppData\Local\Temp\823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a.exe /stext "C:\Users\Admin\AppData\Local\Temp\nmgoln"3⤵
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a.exeC:\Users\Admin\AppData\Local\Temp\823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a.exe /stext "C:\Users\Admin\AppData\Local\Temp\xgmhmfmfh"3⤵
- Accesses Microsoft Outlook accounts
-
-
C:\Users\Admin\AppData\Local\Temp\823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a.exeC:\Users\Admin\AppData\Local\Temp\823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a.exe /stext "C:\Users\Admin\AppData\Local\Temp\hirznyxzvypq"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
nmgoln
System.dll
memory/736-41-0x0000000000400000-0x0000000000462000-memory.dmp
memory/736-29-0x0000000000400000-0x0000000000462000-memory.dmp
memory/736-37-0x0000000000400000-0x0000000000462000-memory.dmp
memory/736-33-0x0000000000400000-0x0000000000462000-memory.dmp
memory/4516-35-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4516-34-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4516-44-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4516-36-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4888-19-0x0000000004B20000-0x0000000005829000-memory.dmp
memory/4888-14-0x0000000004B20000-0x0000000005829000-memory.dmp
memory/4888-26-0x0000000004B20000-0x0000000005829000-memory.dmp
memory/4888-15-0x0000000077A21000-0x0000000077B41000-memory.dmp
memory/4888-16-0x0000000074884000-0x0000000074885000-memory.dmp
memory/5024-57-0x00000000333B0000-0x00000000333C9000-memory.dmp
memory/5024-70-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-20-0x0000000077AC5000-0x0000000077AC6000-memory.dmp
memory/5024-101-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-18-0x0000000077AA8000-0x0000000077AA9000-memory.dmp
memory/5024-91-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-17-0x00000000016E0000-0x00000000023E9000-memory.dmp
memory/5024-88-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-85-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-58-0x00000000333B0000-0x00000000333C9000-memory.dmp
memory/5024-21-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-54-0x00000000333B0000-0x00000000333C9000-memory.dmp
memory/5024-82-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-59-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-61-0x00000000016E0000-0x00000000023E9000-memory.dmp
memory/5024-64-0x0000000077A21000-0x0000000077B41000-memory.dmp
memory/5024-63-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-25-0x0000000077A21000-0x0000000077B41000-memory.dmp
memory/5024-67-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-79-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-73-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5024-76-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/5136-42-0x0000000000400000-0x0000000000478000-memory.dmp
memory/5136-28-0x0000000000400000-0x0000000000478000-memory.dmp
memory/5136-51-0x0000000000400000-0x0000000000478000-memory.dmp
memory/5136-46-0x0000000000400000-0x0000000000478000-memory.dmp
memory/5136-43-0x0000000000400000-0x0000000000478000-memory.dmp
memory/5136-32-0x0000000000400000-0x0000000000478000-memory.dmp