Analysis
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max time kernel
147s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
03-12-2024 02:23
Static task
static1
Behavioral task
behavioral1
Sample
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240903-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20241007-en
General
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Target
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe
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Size
820KB
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MD5
a75036f188683604d03dd8f03fee6ec3
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SHA1
cc2c07398c85ffcd033223d01155851647d0ee68
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SHA256
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531
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SHA512
2a32707969a776c20150ab79b62204918ad6a96599acc99c7d6e99ce1c43eadb77fdf79c0dc59eb517005ab16d6aaa28ab229e68d20bf087ec82a957837390e1
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SSDEEP
12288:7b0EifOJq8Ikm2qv1GV8gmxJziOoA3TB98/0v7Z0Q9i4xw3u5IDkd72gGmkRJWk6:7bxgGKLz8G/XBO/0vOAi4xwk9VS6n
Malware Config
Extracted
remcos
RemoteHost
myfreeenedd.ru:2404
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audio_folder
MicRecords
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audio_path
ApplicationPath
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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-E5Y2QK
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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
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Remcos family
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Detected Nirsoft tools 7 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
Processes:
resource yara_rule behavioral2/memory/3920-51-0x0000000000400000-0x0000000000462000-memory.dmp Nirsoft behavioral2/memory/4452-62-0x0000000000400000-0x0000000000424000-memory.dmp Nirsoft behavioral2/memory/4452-64-0x0000000000400000-0x0000000000424000-memory.dmp Nirsoft behavioral2/memory/4452-61-0x0000000000400000-0x0000000000424000-memory.dmp Nirsoft behavioral2/memory/3920-56-0x0000000000400000-0x0000000000462000-memory.dmp Nirsoft behavioral2/memory/4508-50-0x0000000000400000-0x0000000000478000-memory.dmp Nirsoft behavioral2/memory/4508-71-0x0000000000400000-0x0000000000478000-memory.dmp Nirsoft -
NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral2/memory/3920-51-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView behavioral2/memory/3920-56-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 2 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral2/memory/4508-50-0x0000000000400000-0x0000000000478000-memory.dmp WebBrowserPassView behavioral2/memory/4508-71-0x0000000000400000-0x0000000000478000-memory.dmp WebBrowserPassView -
Loads dropped DLL 2 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exepid Process 4316 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 4316 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\AppData\\Local\\Temp\\subfolder1\\Badrans.scr" 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exepid Process 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exepid Process 4316 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Suspicious use of SetThreadContext 4 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exedescription pid Process procid_target PID 4316 set thread context of 2672 4316 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 89 PID 2672 set thread context of 4508 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 96 PID 2672 set thread context of 3920 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 97 PID 2672 set thread context of 4452 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 98 -
Drops file in Program Files directory 1 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exedescription ioc Process File opened for modification C:\Program Files (x86)\rumsonderne\rendyrkes.plu 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Drops file in Windows directory 2 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exedescription ioc Process File opened for modification C:\Windows\resources\mineralrigste.ini 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe File opened for modification C:\Windows\spaller.ini 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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.
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exepid Process 4508 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 4508 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 4452 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 4452 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 4508 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 4508 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Suspicious behavior: MapViewOfSection 4 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exepid Process 4316 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exedescription pid Process Token: SeDebugPrivilege 4452 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exepid Process 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exedescription pid Process procid_target PID 4316 wrote to memory of 2672 4316 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 89 PID 4316 wrote to memory of 2672 4316 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 89 PID 4316 wrote to memory of 2672 4316 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 89 PID 4316 wrote to memory of 2672 4316 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 89 PID 4316 wrote to memory of 2672 4316 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 89 PID 2672 wrote to memory of 4508 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 96 PID 2672 wrote to memory of 4508 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 96 PID 2672 wrote to memory of 4508 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 96 PID 2672 wrote to memory of 3920 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 97 PID 2672 wrote to memory of 3920 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 97 PID 2672 wrote to memory of 3920 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 97 PID 2672 wrote to memory of 4452 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 98 PID 2672 wrote to memory of 4452 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 98 PID 2672 wrote to memory of 4452 2672 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe"C:\Users\Admin\AppData\Local\Temp\4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.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
PID:4316 -
C:\Users\Admin\AppData\Local\Temp\4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe"C:\Users\Admin\AppData\Local\Temp\4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe"2⤵
- Adds Run key to start application
- 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
PID:2672 -
C:\Users\Admin\AppData\Local\Temp\4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exeC:\Users\Admin\AppData\Local\Temp\4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe /stext "C:\Users\Admin\AppData\Local\Temp\bmdtffefvdxvhyswgwzarbb"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4508
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C:\Users\Admin\AppData\Local\Temp\4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exeC:\Users\Admin\AppData\Local\Temp\4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe /stext "C:\Users\Admin\AppData\Local\Temp\lgrmgxohjlpakeoixylccgobhp"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
PID:3920
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C:\Users\Admin\AppData\Local\Temp\4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exeC:\Users\Admin\AppData\Local\Temp\4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531.exe /stext "C:\Users\Admin\AppData\Local\Temp\oiwehqzbfthnukcmhjgvftisivmtzr"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4452
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
144B
MD534a2ffd33caece22fe8d5a7827c5ebfb
SHA19e7bb480b48825d89cc4dad764dfd0373480ab27
SHA25611b4b15e7fbfb40c0a5a27655934d6a68b882f278b70b5e1ab51d905c10f2b4e
SHA51291d1f888c4e6f6334b102183e3adbf2adf406989b262ff9b67a9b9653c3b477d24d0795442c3768d18936987c5681e213fb190e088f242f6761f3024844a7e97
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Filesize
4KB
MD5ac300aeaf27709e2067788fdd4624843
SHA1e98edd4615d35de96e30f1a0e13c05b42ee7eb7b
SHA256d2637d58bb120dc6fefe2f38d6e0d4b308006b8639106a7f9e915fa80b5cc9d9
SHA51209c46e708f9d253dccd4d943639d9f8126f868ae3dcd951aad12222bb98b5d3814676f878c8391b9bdab5dedcf5b9e9eaeb2ad3ffec57bda875198735586d4df
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Filesize
11KB
MD5b0c77267f13b2f87c084fd86ef51ccfc
SHA1f7543f9e9b4f04386dfbf33c38cbed1bf205afb3
SHA256a0cac4cf4852895619bc7743ebeb89f9e4927ccdb9e66b1bcd92a4136d0f9c77
SHA512f2b57a2eea00f52a3c7080f4b5f2bb85a7a9b9f16d12da8f8ff673824556c62a0f742b72be0fd82a2612a4b6dbd7e0fdc27065212da703c2f7e28d199696f66e