Analysis
- max time kernel
148s - max time network
147s - platform
windows7_x64 - resource
win7-20240903-en - resource tags
- submitted
28/09/2024, 01:58
General
- Target e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
- Size 795KB
- Sample240928-cd5ayatcph
- SHA256 e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38
Malware Config
Extracted
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remcos
-
RemoteHost
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66.150.198.142:2700
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66.150.198.142:27000
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66.150.198.142:26000
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66.150.198.142:28000
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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
-
copy_folder
Remcos
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delete_file
false
-
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
-
keylog_file
logs.dat
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keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-I617OK
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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.
- Detected Nirsoft tools 8 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
- NirSoft MailPassView 3 IoCs
Password recovery tool for various email clients
- NirSoft WebBrowserPassView 3 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 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 4 IoCs
- Drops file in Program Files directory 1 IoCs
- Drops file in Windows 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 2 IoCs
- Suspicious behavior: MapViewOfSection 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 18 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe"C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe"C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.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 WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exeC:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe /stext "C:\Users\Admin\AppData\Local\Temp\winfeqmobxechfbdphsegbyv"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exeC:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe /stext "C:\Users\Admin\AppData\Local\Temp\gcspfjxqpfwprlppysfgrgkmumxd"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exeC:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe /stext "C:\Users\Admin\AppData\Local\Temp\rwgigbhjdnoutzltpdshctfvdapmnwm"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
winfeqmobxechfbdphsegbyv
System.dll
memory/2360-57-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2360-41-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2360-39-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2360-44-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2360-45-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2512-46-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2512-62-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2512-42-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2512-40-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2512-43-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2608-37-0x0000000001890000-0x0000000005E6B000-memory.dmp
memory/2608-66-0x0000000035940000-0x0000000035959000-memory.dmp
memory/2608-67-0x0000000035940000-0x0000000035959000-memory.dmp
memory/2608-63-0x0000000035940000-0x0000000035959000-memory.dmp
memory/2608-33-0x0000000000820000-0x0000000001882000-memory.dmp
memory/2608-32-0x0000000000820000-0x0000000001882000-memory.dmp
memory/2608-31-0x0000000077400000-0x00000000775A9000-memory.dmp
memory/2848-30-0x0000000077400000-0x00000000775A9000-memory.dmp
memory/2848-29-0x0000000077401000-0x0000000077502000-memory.dmp
memory/2996-48-0x0000000000400000-0x0000000000424000-memory.dmp
memory/2996-51-0x0000000000400000-0x0000000000424000-memory.dmp
memory/2996-47-0x0000000000400000-0x0000000000424000-memory.dmp
memory/2996-50-0x0000000000400000-0x0000000000424000-memory.dmp
memory/2996-49-0x0000000000400000-0x0000000000424000-memory.dmp