Analysis
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max time kernel
51s -
max time network
53s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
18-10-2022 19:29
Static task
static1
Behavioral task
behavioral1
Sample
corsve.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
9 signatures
150 seconds
General
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Target
corsve.exe
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Size
872KB
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MD5
c56b5f0201a3b3de53e561fe76912bfd
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SHA1
2a4062e10a5de813f5688221dbeb3f3ff33eb417
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SHA256
237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
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SHA512
195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c
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SSDEEP
12288:6pVWeOV7GtINsegA/hMyyzlcqikvAfcN9b2MyZa31twoPTdFxgawV2M01:6T3E53Myyzl0hMf1tr7Caw8M01
Score
3/10
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Modifies registry class 57 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2 corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656}\GroupView = "0" corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 14002e80922b16d365937a46956b92703aca08af0000 corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656}\IconSize = "16" corsve.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}\GroupByKey:FMTID = "{B725F130-47EF-101A-A5F1-02608C9EEBAC}" corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU corsve.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\KnownFolderDerivedFolderType = "{885A186E-A440-4ADA-812B-DB871B942259}" corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 0000000001000000ffffffff corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 0100000000000000ffffffff corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 0202 corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}\LogicalViewMode = "1" corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}\GroupByKey:PID = "14" corsve.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\1 corsve.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656}\GroupByKey:FMTID = "{00000000-0000-0000-0000-000000000000}" corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656}\GroupByDirection = "1" corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259} corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}\GroupByDirection = "4294967295" corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656}\FFlags = "1092616257" corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a0000001001000030f125b7ef471a10a5f102608c9eebac0e0000009000000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000 corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656}\FFlags = "1" corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656}\GroupByKey:PID = "0" corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a0000001001000030f125b7ef471a10a5f102608c9eebac0e0000009000000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000 corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}\Sort = 000000000000000000000000000000000100000030f125b7ef471a10a5f102608c9eebac0e000000ffffffff corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\1\MRUListEx = ffffffff corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656}\Sort = 000000000000000000000000000000000100000030f125b7ef471a10a5f102608c9eebac0a00000001000000 corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}\Mode = "4" corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656}\LogicalViewMode = "1" corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}\GroupView = "4294967295" corsve.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Documents" corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\1 = 14002e8005398e082303024b98265d99428e115f0000 corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656}\Mode = "4" corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\1\NodeSlot = "2" corsve.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\SniffedFolderType = "Downloads" corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000 corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}\IconSize = "16" corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ corsve.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{7D49D726-3C21-4F05-99AA-FDC2C9474656} corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}\FFlags = "1092616257" corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}\FFlags = "1" corsve.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots corsve.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" corsve.exe -
Suspicious behavior: EnumeratesProcesses 33 IoCs
pid Process 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 3420 corsve.exe 3620 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 3620 taskmgr.exe Token: SeSystemProfilePrivilege 3620 taskmgr.exe Token: SeCreateGlobalPrivilege 3620 taskmgr.exe -
Suspicious use of FindShellTrayWindow 31 IoCs
pid Process 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe -
Suspicious use of SendNotifyMessage 31 IoCs
pid Process 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe 3620 taskmgr.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3420 corsve.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\corsve.exe"C:\Users\Admin\AppData\Local\Temp\corsve.exe"1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:3420
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3620