Analysis
- max time kernel
150s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
05/11/2024, 04:25
General
- Target e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
- Size 885KB
- Sample241105-e11x5svgmj
- SHA256 e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf
Malware Config
Extracted
-
remcos
-
RemoteHost
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162.251.122.106:2404
-
audio_folder
MicRecords
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audio_path
ApplicationPath
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audio_record_time
5
-
connect_delay
0
-
connect_interval
1
-
copy_file
remcos.exe
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copy_folder
Remcos
-
delete_file
false
-
hide_file
false
-
hide_keylog_file
false
-
install_flag
false
-
keylog_crypt
false
-
keylog_file
logs.dat
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keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-BHLA3T
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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 family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Remcos family
- Detected Nirsoft tools 6 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 2 IoCs
Password recovery tool for various web browsers
- Loads dropped DLL 2 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 Program Files 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
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C:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe"C:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe"C:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.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\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exeC:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe /stext "C:\Users\Admin\AppData\Local\Temp\rbdlwbdekaryrkurznvcgebcflu"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exeC:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe /stext "C:\Users\Admin\AppData\Local\Temp\bdjvxtoxyikdtyqviyqwjjvloseqrho"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exeC:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe /stext "C:\Users\Admin\AppData\Local\Temp\lxooylyzuqcidfezzjdxuvqcpgwrksejsa"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
kvindagtigt.ini
logs.dat
System.dll
rbdlwbdekaryrkurznvcgebcflu
memory/3288-294-0x00000000045D0000-0x000000000602F000-memory.dmp
memory/3288-295-0x0000000077A51000-0x0000000077B71000-memory.dmp
memory/3288-296-0x00000000746A5000-0x00000000746A6000-memory.dmp
memory/3288-297-0x00000000045D0000-0x000000000602F000-memory.dmp
memory/4536-310-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4536-306-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4536-326-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4536-305-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4848-339-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-348-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-372-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-369-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-366-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-354-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-351-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-320-0x0000000001AA0000-0x00000000034FF000-memory.dmp
memory/4848-345-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-342-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-328-0x0000000034620000-0x0000000034639000-memory.dmp
memory/4848-331-0x0000000034620000-0x0000000034639000-memory.dmp
memory/4848-332-0x0000000034620000-0x0000000034639000-memory.dmp
memory/4848-333-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-336-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-299-0x0000000000840000-0x0000000001A94000-memory.dmp
memory/4848-298-0x0000000001AA0000-0x00000000034FF000-memory.dmp
memory/4856-311-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4856-308-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4856-309-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4856-312-0x0000000000400000-0x0000000000424000-memory.dmp
memory/5096-317-0x0000000000400000-0x0000000000462000-memory.dmp
memory/5096-307-0x0000000000400000-0x0000000000462000-memory.dmp
memory/5096-316-0x0000000000400000-0x0000000000462000-memory.dmp
memory/5096-321-0x0000000000400000-0x0000000000462000-memory.dmp