Analysis
- max time kernel
150s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
13/02/2024, 02:40
General
- Target 3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
- Size 1.0MB
- Sample240213-c5t92sdb48
- SHA256 3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b
Malware Config
Extracted
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remcos
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P2-bin
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84.38.132.126:61445
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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
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
Rmc-ANE1CN
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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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) 26 IoCs
- Detects executables built or packed with MPress PE compressor 16 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
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 13 IoCs
- Suspicious behavior: MapViewOfSection 4 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 36 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\bZurkfs.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bZurkfs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC98A.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"2⤵
- 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\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exeC:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ybcwyooena"3⤵
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C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exeC:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ybcwyooena"3⤵
- Suspicious behavior: EnumeratesProcesses
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C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exeC:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\bvhhzyzybizuo"3⤵
- Accesses Microsoft Outlook accounts
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C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exeC:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\lxvzarjzpqrzrakw"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
powershell.exe.log
StartupProfileData-NonInteractive
tmpC98A.tmp
ybcwyooena
memory/1632-6-0x0000000009D60000-0x0000000009DFC000-memory.dmp
memory/1632-0-0x0000000000230000-0x000000000033A000-memory.dmp
memory/1632-8-0x0000000004650000-0x000000000465A000-memory.dmp
memory/1632-9-0x0000000004660000-0x000000000466E000-memory.dmp
memory/1632-10-0x000000000A460000-0x000000000A526000-memory.dmp
memory/1632-52-0x0000000074B80000-0x0000000075330000-memory.dmp
memory/1632-5-0x00000000073A0000-0x00000000073AA000-memory.dmp
memory/1632-4-0x0000000007260000-0x0000000007270000-memory.dmp
memory/1632-3-0x00000000070A0000-0x0000000007132000-memory.dmp
memory/1632-7-0x0000000004610000-0x0000000004624000-memory.dmp
memory/1632-1-0x0000000074B80000-0x0000000075330000-memory.dmp
memory/1632-2-0x0000000007560000-0x0000000007B04000-memory.dmp
memory/3076-114-0x0000000000400000-0x0000000000457000-memory.dmp
memory/3076-104-0x0000000000400000-0x0000000000457000-memory.dmp
memory/3076-108-0x0000000000400000-0x0000000000457000-memory.dmp
memory/3076-100-0x0000000000400000-0x0000000000457000-memory.dmp
memory/3200-116-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3200-112-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3200-113-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3200-105-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3524-129-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-45-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-50-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-47-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-54-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-55-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-53-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-179-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-178-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-58-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-59-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-60-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-61-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-62-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-63-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-65-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-171-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-170-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-68-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-163-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-162-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-154-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-147-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-145-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-146-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3524-126-0x0000000010000000-0x0000000010019000-memory.dmp
memory/3524-130-0x0000000010000000-0x0000000010019000-memory.dmp
memory/3524-125-0x0000000010000000-0x0000000010019000-memory.dmp
memory/3524-122-0x0000000010000000-0x0000000010019000-memory.dmp
memory/3524-48-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3692-25-0x0000000005C30000-0x0000000005C96000-memory.dmp
memory/3692-19-0x0000000074B80000-0x0000000075330000-memory.dmp
memory/3692-66-0x0000000004EF0000-0x0000000004F00000-memory.dmp
memory/3692-70-0x0000000007600000-0x0000000007632000-memory.dmp
memory/3692-23-0x0000000005B90000-0x0000000005BB2000-memory.dmp
memory/3692-46-0x0000000005F40000-0x0000000006294000-memory.dmp
memory/3692-115-0x00000000077C0000-0x00000000077CA000-memory.dmp
memory/3692-84-0x000000007F940000-0x000000007F950000-memory.dmp
memory/3692-22-0x0000000004EF0000-0x0000000004F00000-memory.dmp
memory/3692-20-0x0000000004EF0000-0x0000000004F00000-memory.dmp
memory/3692-117-0x00000000079F0000-0x0000000007A86000-memory.dmp
memory/3692-118-0x0000000007970000-0x0000000007981000-memory.dmp
memory/3692-73-0x00000000753E0000-0x000000007542C000-memory.dmp
memory/3692-95-0x0000000007D90000-0x000000000840A000-memory.dmp
memory/3692-144-0x0000000074B80000-0x0000000075330000-memory.dmp
memory/3692-135-0x0000000007AB0000-0x0000000007ACA000-memory.dmp
memory/3692-133-0x00000000079A0000-0x00000000079AE000-memory.dmp
memory/3692-18-0x0000000005530000-0x0000000005B58000-memory.dmp
memory/3692-132-0x0000000004EF0000-0x0000000004F00000-memory.dmp
memory/3692-131-0x0000000074B80000-0x0000000075330000-memory.dmp
memory/3888-17-0x0000000005000000-0x0000000005010000-memory.dmp
memory/3888-71-0x00000000753E0000-0x000000007542C000-memory.dmp
memory/3888-127-0x0000000074B80000-0x0000000075330000-memory.dmp
memory/3888-56-0x0000000006390000-0x00000000063AE000-memory.dmp
memory/3888-134-0x00000000078E0000-0x00000000078F4000-memory.dmp
memory/3888-128-0x0000000005000000-0x0000000005010000-memory.dmp
memory/3888-136-0x00000000079C0000-0x00000000079C8000-memory.dmp
memory/3888-97-0x00000000076A0000-0x00000000076BA000-memory.dmp
memory/3888-143-0x0000000074B80000-0x0000000075330000-memory.dmp
memory/3888-21-0x0000000005000000-0x0000000005010000-memory.dmp
memory/3888-57-0x00000000063E0000-0x000000000642C000-memory.dmp
memory/3888-64-0x0000000005000000-0x0000000005010000-memory.dmp
memory/3888-16-0x0000000074B80000-0x0000000075330000-memory.dmp
memory/3888-72-0x000000007FC20000-0x000000007FC30000-memory.dmp
memory/3888-15-0x0000000002A50000-0x0000000002A86000-memory.dmp
memory/3888-83-0x0000000006940000-0x000000000695E000-memory.dmp
memory/3888-94-0x0000000007580000-0x0000000007623000-memory.dmp
memory/3888-26-0x0000000005D60000-0x0000000005DC6000-memory.dmp
memory/4652-120-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4652-99-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4652-103-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4652-96-0x0000000000400000-0x0000000000478000-memory.dmp