Analysis
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max time kernel
61s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
06-02-2023 16:22
Static task
static1
Behavioral task
behavioral1
Sample
82cab7dcc05ef7a952e748caa22f86376d79abd81385ad80727ab1c198805fcd.exe
Resource
win10v2004-20221111-en
General
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Target
82cab7dcc05ef7a952e748caa22f86376d79abd81385ad80727ab1c198805fcd.exe
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Size
365KB
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MD5
73acdd954ebaf892a1d9cee4fbc3ffbd
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SHA1
1e42db5bd9f5dd571715ea0f7ed3ff40f5ed591f
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SHA256
82cab7dcc05ef7a952e748caa22f86376d79abd81385ad80727ab1c198805fcd
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SHA512
78e42a16c0a1caad79157674b27369b4dccf5a111504caaa96598533f347bc5a50484481a795d2529dcfc7d70b4e9ad35cbfcf1ecf11d0b2c638a95213953d27
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SSDEEP
6144:xMLhLB0YHmHRIHIE8OhpFeBDi/LJOI/2CuQj9naMF:xM1LhmKHFb+BD2dOJCljVv
Malware Config
Signatures
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Detect rhadamanthys stealer shellcode 2 IoCs
Processes:
resource yara_rule behavioral1/memory/372-136-0x0000000002270000-0x000000000228D000-memory.dmp family_rhadamanthys behavioral1/memory/372-145-0x0000000002270000-0x000000000228D000-memory.dmp family_rhadamanthys -
Rhadamanthys
Rhadamanthys is an info stealer written in C++ first seen in August 2022.
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Blocklisted process makes network request 1 IoCs
Processes:
rundll32.exeflow pid process 17 4872 rundll32.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 4872 rundll32.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\10.0\Outlook\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\11.0\Outlook\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\12.0\Outlook\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Program crash 2 IoCs
Processes:
WerFault.exeWerFault.exepid pid_target process target process 1312 372 WerFault.exe 82cab7dcc05ef7a952e748caa22f86376d79abd81385ad80727ab1c198805fcd.exe 3472 4872 WerFault.exe rundll32.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
rundll32.exepid process 4872 rundll32.exe 4872 rundll32.exe 4872 rundll32.exe 4872 rundll32.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
82cab7dcc05ef7a952e748caa22f86376d79abd81385ad80727ab1c198805fcd.exedescription pid process target process PID 372 wrote to memory of 4872 372 82cab7dcc05ef7a952e748caa22f86376d79abd81385ad80727ab1c198805fcd.exe rundll32.exe PID 372 wrote to memory of 4872 372 82cab7dcc05ef7a952e748caa22f86376d79abd81385ad80727ab1c198805fcd.exe rundll32.exe -
outlook_office_path 1 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook rundll32.exe -
outlook_win_path 1 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\82cab7dcc05ef7a952e748caa22f86376d79abd81385ad80727ab1c198805fcd.exe"C:\Users\Admin\AppData\Local\Temp\82cab7dcc05ef7a952e748caa22f86376d79abd81385ad80727ab1c198805fcd.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\rundll32.exe"C:\Users\Admin\AppData\Roaming\nsis_unse567e9b.dll",PrintUIEntry |5CQkOhmAAAA|1TKr5GsMwYD|67sDqg8OAAl|xYmwxC0TNSO|1k8B3tZkgiyf2sAZQByAG4XAP9sADMAMgAuAKVkHwBs8|AtBQPz8Gj7AEc9AEkAUgB5+icASD0ATwA4AHTvAGYAYS0CWUiD|+wo6AQCAABI|4PEKMPMzMxM|4lEJBhIiVQkvxBIiUwkCF0BSP+LRCQwSIkEJPaBAThIbwAISMdE2yQQLQHrDoEBEEjXg8ABjwEQgQFASO05lgBzJZ8Diwwk|0gDyEiLwUiL9UyrAVR7AAPRSIt|yooJiAjrwWYFv2VIiwQlYPPwM||JSItQGEg70f90NkiDwiBIi|8CSDvCdCpmg|94SBh1GkyLQP9QZkGDOGt0B+4REUt1CBEQeBAu|3QFSIsA69VI64tI|QDBagBAU1X|VldBVEFVQVb7QVddAWaBOU1a|02L+EyL8kiL79kPhfzz8ExjSf88QYE8CVBFAO8AD4Xq8|BBi4T7CYjz8IXASI087wEPhNZqEYO8Cd2MLQEPhMfz8ESL|2cgRItfHIt3|yREi08YTAPh|0wD2UgD8TPJv0WFyQ+EpPPwTf+LxEGLEEUz0v9IA9OKAoTAdP8dQcHKDQ++wN76AAFEA9C|EXXs|0GB+qr8DXx0|w6DwQFJg8AE|0E7yXNp68aL|8EPtwxORYss|4tMA+t0WDPtvqoQdFFBixTBANP|M8mKAkyLwuu3D8HJyBEDyOUQAfdBigDVEO0zwDOf9kE7DLbgEKYAg||GAYP4CHLu6|8KSIvLQf|VSd+JBPeDxeQQxATfO28Ycq9mAUFf|0FeQV1BXF9e+11bMxdIgexgAf5kAIvp6Gb+||+|SIXAD4SYdSBM9Y2vAYsrEMgz|+j9m30gjV8ETI1F|0Yz0ovL|1Qk|WiAIEyL4A+Ea3p1IEWoEDPAi9ORIF9IiXwkIKYgcIAgP0iL8A+ES3UgpiD|UEiNVghEjUffQEiNjCSFEUiL79jofP1+II1WSGreIBDiIczz8Ohn7yA|RIsGjVcIQSCmIL1YyiGJhCSAhxLe9vPwiw7aIFiJjCTYcREHMJEg6DHvIIuc|i0yTItdOkiD+|tsSIogMEyJZCTvOEyLpBoyTIlcboQBhCTchxGGko0Ru41HSzCMJPDz8Enfi9To6fwFMIqc7ngySI2EeDJBgPN|IY1PbEQwGKQCf4PpAXXzgbx4Mv8hUmV4dU2LhLsk9CIxlCT4NQHC|0g72HI4g|psv3YzRI1JQPoAlKdBuACYAKYgQMoi+Od0GUS2MMAxSY1U+yRskSBJg+hs6N1rgjBIi86mIHhI|4X|dBKLVUJM|I4wGzFIjUwkQP8P10iBxHQhYSQtCC0B2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- outlook_office_path
- outlook_win_path
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 4872 -s 2963⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 372 -s 7282⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 372 -ip 3721⤵
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 504 -p 4872 -ip 48721⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Roaming\nsis_unse567e9b.dllFilesize
49KB
MD5832890fded186835970d1d3302590138
SHA15385703e9dcde43e60928b2e9c941b7232468a6a
SHA256438c088568093ad767802ba5e132efbd4e643ddf62e4996565c3b46719e3e576
SHA5125cf752eac75b532b32501c9d469cbcb6638b49cf20df040554b37986cbe3c068a10e2ff69747b594b5b114111cbbe1cdfbbd0f394a7ac71b863e042414a68ae1
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C:\Users\Admin\AppData\Roaming\nsis_unse567e9b.dllFilesize
49KB
MD5832890fded186835970d1d3302590138
SHA15385703e9dcde43e60928b2e9c941b7232468a6a
SHA256438c088568093ad767802ba5e132efbd4e643ddf62e4996565c3b46719e3e576
SHA5125cf752eac75b532b32501c9d469cbcb6638b49cf20df040554b37986cbe3c068a10e2ff69747b594b5b114111cbbe1cdfbbd0f394a7ac71b863e042414a68ae1
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memory/372-144-0x00000000006B1000-0x00000000006C2000-memory.dmpFilesize
68KB
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memory/372-132-0x000000000068E000-0x00000000006AE000-memory.dmpFilesize
128KB
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memory/372-136-0x0000000002270000-0x000000000228D000-memory.dmpFilesize
116KB
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memory/372-145-0x0000000002270000-0x000000000228D000-memory.dmpFilesize
116KB
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memory/372-134-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/372-133-0x0000000000630000-0x0000000000655000-memory.dmpFilesize
148KB
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memory/372-135-0x00000000006B1000-0x00000000006C2000-memory.dmpFilesize
68KB
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memory/372-143-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/372-142-0x000000000068E000-0x00000000006AE000-memory.dmpFilesize
128KB
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memory/4872-141-0x00007FF454B70000-0x00007FF454C6A000-memory.dmpFilesize
1000KB
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memory/4872-140-0x0000017FC4740000-0x0000017FC4747000-memory.dmpFilesize
28KB
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memory/4872-137-0x0000000000000000-mapping.dmp
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memory/4872-146-0x00007FF454B70000-0x00007FF454C6A000-memory.dmpFilesize
1000KB
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memory/4872-147-0x00007FFAC3310000-0x00007FFAC3322000-memory.dmpFilesize
72KB