Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
04/06/2024, 01:51
General
- Target c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exe
- Size 1021KB
- Sample240604-b9w4rsaa27
- SHA256 c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79
Malware Config
Extracted
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remcos
-
RemoteHost
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oceansss.duckdns.org:1144
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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
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
false
-
keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
-
keylog_folder
fgdghrd
-
mouse_option
false
-
mutex
Rmc-O8FLSY
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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
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 24 IoCs
- Detects executables built or packed with MPress PE compressor 15 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 3 IoCs
Password recovery tool for various web browsers
- Nirsoft 6 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 SetThreadContext 4 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious behavior: MapViewOfSection 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 27 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exe"C:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exe"C:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exeC:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exe /stext "C:\Users\Admin\AppData\Local\Temp\cuerlawvbhlqowflqhmii"3⤵
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exeC:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exe /stext "C:\Users\Admin\AppData\Local\Temp\fojjmshpppedykbxzszblxopi"3⤵
- Accesses Microsoft Outlook accounts
-
-
C:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exeC:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exe /stext "C:\Users\Admin\AppData\Local\Temp\pqocmlsqlywibqpbqctdwjjgrxxl"3⤵
-
-
C:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exeC:\Users\Admin\AppData\Local\Temp\c4dd9ec83dc0b304101fa6b2f37d93aae8921bab88ca6e49a6a8eb18d390ed79.exe /stext "C:\Users\Admin\AppData\Local\Temp\pqocmlsqlywibqpbqctdwjjgrxxl"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
cuerlawvbhlqowflqhmii
memory/848-34-0x0000000000400000-0x0000000000462000-memory.dmp
memory/848-36-0x0000000000400000-0x0000000000462000-memory.dmp
memory/848-38-0x0000000000400000-0x0000000000462000-memory.dmp
memory/848-31-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1004-37-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1004-29-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1004-46-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1004-35-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1004-33-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1116-39-0x0000000000400000-0x0000000000424000-memory.dmp
memory/1116-43-0x0000000000400000-0x0000000000424000-memory.dmp
memory/1116-44-0x0000000000400000-0x0000000000424000-memory.dmp
memory/1468-5-0x0000000074A60000-0x0000000075210000-memory.dmp
memory/1468-8-0x0000000005860000-0x0000000005868000-memory.dmp
memory/1468-0-0x0000000074A6E000-0x0000000074A6F000-memory.dmp
memory/1468-20-0x0000000074A60000-0x0000000075210000-memory.dmp
memory/1468-7-0x0000000005910000-0x00000000059AC000-memory.dmp
memory/1468-4-0x0000000005760000-0x000000000576A000-memory.dmp
memory/1468-6-0x00000000057A0000-0x000000000584C000-memory.dmp
memory/1468-3-0x0000000005550000-0x00000000055E2000-memory.dmp
memory/1468-2-0x0000000005A60000-0x0000000006004000-memory.dmp
memory/1468-1-0x0000000000A40000-0x0000000000B46000-memory.dmp
memory/4772-12-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-53-0x0000000010000000-0x0000000010019000-memory.dmp
memory/4772-23-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-24-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-22-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-21-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-18-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-14-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-17-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-13-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-11-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-10-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-49-0x0000000010000000-0x0000000010019000-memory.dmp
memory/4772-27-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-52-0x0000000010000000-0x0000000010019000-memory.dmp
memory/4772-54-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-56-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-57-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-9-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-64-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-65-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-72-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-73-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-79-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-80-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-88-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4772-87-0x0000000000400000-0x0000000000482000-memory.dmp