Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
11/05/2024, 01:51
General
- Target 2024090533201.exe
- Size 439KB
- Sample240511-b95e5shc32
- SHA256 56399bbe65e2003a0f7b725132569f0bb355cd9e58f2b7349a7fc6eea3ad39e3
Malware Config
Extracted
-
remcos
-
RemoteHost
-
185.29.9.120:2404
-
audio_folder
MicRecords
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audio_record_time
5
-
connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
-
copy_folder
Remcos
-
delete_file
false
-
hide_file
false
-
hide_keylog_file
false
-
install_flag
false
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keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-QN9BDD
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
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) 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 WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024090533201.exe"C:\Users\Admin\AppData\Local\Temp\2024090533201.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\2024090533201.exe"C:\Users\Admin\AppData\Local\Temp\2024090533201.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\2024090533201.exeC:\Users\Admin\AppData\Local\Temp\2024090533201.exe /stext "C:\Users\Admin\AppData\Local\Temp\ybcudropap"3⤵
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\2024090533201.exeC:\Users\Admin\AppData\Local\Temp\2024090533201.exe /stext "C:\Users\Admin\AppData\Local\Temp\idheejzrwypzm"3⤵
- Accesses Microsoft Outlook accounts
-
-
C:\Users\Admin\AppData\Local\Temp\2024090533201.exeC:\Users\Admin\AppData\Local\Temp\2024090533201.exe /stext "C:\Users\Admin\AppData\Local\Temp\kxmxwckkkghmwwijh"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
System.dll
ybcudropap
memory/1828-66-0x00000000778B1000-0x00000000779D1000-memory.dmp
memory/1828-67-0x0000000010004000-0x0000000010005000-memory.dmp
memory/4396-79-0x0000000000400000-0x0000000000462000-memory.dmp
memory/4396-97-0x0000000000400000-0x0000000000462000-memory.dmp
memory/4396-93-0x0000000000400000-0x0000000000462000-memory.dmp
memory/4396-84-0x0000000000400000-0x0000000000462000-memory.dmp
memory/4516-86-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4516-101-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4516-80-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4516-76-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4516-83-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4516-85-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4720-88-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4720-87-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4720-89-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4720-96-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4756-68-0x0000000077938000-0x0000000077939000-memory.dmp
memory/4756-110-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-82-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-74-0x00000000778B1000-0x00000000779D1000-memory.dmp
memory/4756-108-0x0000000036D30000-0x0000000036D49000-memory.dmp
memory/4756-107-0x0000000036D30000-0x0000000036D49000-memory.dmp
memory/4756-104-0x0000000036D30000-0x0000000036D49000-memory.dmp
memory/4756-70-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-109-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-69-0x0000000077955000-0x0000000077956000-memory.dmp
memory/4756-111-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-112-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-113-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-114-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-116-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-117-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-118-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-119-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/4756-120-0x0000000000470000-0x00000000016C4000-memory.dmp