Resubmissions
02/03/2024, 17:29
240302-v2y3yafh78802/03/2024, 17:24
240302-vysrrafh381002/03/2024, 17:22
240302-vxn26sfd2110Analysis
- max time kernel
105s - max time network
141s - platform
windows11-21h2_x64 - resource
win11-20240221-en - resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system - submitted
02/03/2024, 17:24
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
crazyCore.exe
Resource
win11-20240221-en
14 signatures
150 seconds
General
- Target crazyCore.exe
- Size 15.0MB
- Sample240302-vysrrafh38
- SHA256 0d900cb2be48cef95db3dbe86221d8d1007ba294b963ee580c2293c6be37f07a
- MD5 3e69eb9b5ab82999bdc78d6232917e2f
- SHA1 3516807c3f86bfb9298cfb9840dacbff99fb8f48
- SHA512 f0f0f3dc549d989e710b3db10674629adaed4291e700f38fdcfa52ab4847a02aecf63fbc0197a747fae2ca997a6a6e8ed454e58e83ebbdae20cb30d01810de9e
- SSDEEP 49152:celaraJaKaoCNpHWuZkYZ+RYkwhtzLjxI8LbX154Kx3bvQQz5RrlD1ZNyWO1MO9U:v3W
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
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description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender Security Center\Notifications reg.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender Security Center\Notifications\DisableNotifications = "1" reg.exe - Creates new service(s) 1 TTPs
- Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 4568 attrib.exe - Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 1748 sc.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WINWORD.EXE - Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE - Modifies registry class 34 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\LogicalViewMode = "1" crazyCore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a0000001001000030f125b7ef471a10a5f102608c9eebac0e0000009000000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000 crazyCore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:FMTID = "{00000000-0000-0000-0000-000000000000}" crazyCore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1" crazyCore.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ crazyCore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000 crazyCore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 crazyCore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:PID = "0" crazyCore.exe Key created \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU crazyCore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff crazyCore.exe Key created \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 crazyCore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff crazyCore.exe Key created \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ crazyCore.exe Key created \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7} crazyCore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1092616257" crazyCore.exe Key created \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell crazyCore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\IconSize = "16" crazyCore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByDirection = "1" crazyCore.exe Key created \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 crazyCore.exe Key created \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 crazyCore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupView = "0" crazyCore.exe Key created \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags crazyCore.exe Key created \Registry\User\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\NotificationData crazyCore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Mode = "4" crazyCore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Sort = 000000000000000000000000000000000100000030f125b7ef471a10a5f102608c9eebac0a00000001000000 crazyCore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" crazyCore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" crazyCore.exe Key created \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell crazyCore.exe Key created \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg crazyCore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff crazyCore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots crazyCore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff crazyCore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000 crazyCore.exe Key created \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000_Classes\Local Settings crazyCore.exe - Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2472 WINWORD.EXE 2472 WINWORD.EXE - Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 1160 crazyCore.exe 1136 powershell.exe 1136 powershell.exe 4660 powershell.exe 4660 powershell.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1160 crazyCore.exe Token: SeDebugPrivilege 1136 powershell.exe Token: SeDebugPrivilege 4660 powershell.exe - Suspicious use of SetWindowsHookEx 9 IoCs
pid Process 1160 crazyCore.exe 1160 crazyCore.exe 2472 WINWORD.EXE 2472 WINWORD.EXE 2472 WINWORD.EXE 2472 WINWORD.EXE 2472 WINWORD.EXE 2472 WINWORD.EXE 2472 WINWORD.EXE - Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 1160 wrote to memory of 1440 1160 crazyCore.exe 81 PID 1160 wrote to memory of 1440 1160 crazyCore.exe 81 PID 1440 wrote to memory of 1136 1440 cmd.exe 83 PID 1440 wrote to memory of 1136 1440 cmd.exe 83 PID 1136 wrote to memory of 1868 1136 powershell.exe 84 PID 1136 wrote to memory of 1868 1136 powershell.exe 84 PID 1160 wrote to memory of 4100 1160 crazyCore.exe 85 PID 1160 wrote to memory of 4100 1160 crazyCore.exe 85 PID 4100 wrote to memory of 4568 4100 cmd.exe 87 PID 4100 wrote to memory of 4568 4100 cmd.exe 87 PID 4100 wrote to memory of 4660 4100 cmd.exe 88 PID 4100 wrote to memory of 4660 4100 cmd.exe 88 PID 1160 wrote to memory of 4220 1160 crazyCore.exe 89 PID 1160 wrote to memory of 4220 1160 crazyCore.exe 89 PID 4220 wrote to memory of 1748 4220 cmd.exe 91 PID 4220 wrote to memory of 1748 4220 cmd.exe 91 - Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 4568 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\crazyCore.exe"C:\Users\Admin\AppData\Local\Temp\crazyCore.exe"1⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1160 -
C:\Windows\SYSTEM32\cmd.exe"cmd.exe" /c powershell -Command reg add 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender Security Center\Notifications' /v DisableNotifications /t REG_DWORD /d 1 /f2⤵
- Suspicious use of WriteProcessMemory
PID:1440 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command reg add 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender Security Center\Notifications' /v DisableNotifications /t REG_DWORD /d 1 /f3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1136 -
C:\Windows\system32\reg.exe"C:\Windows\system32\reg.exe" add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender Security Center\Notifications" /v DisableNotifications /t REG_DWORD /d 1 /f4⤵
- Modifies Windows Defender notification settings
PID:1868
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C:\Windows\SYSTEM32\cmd.exe"cmd.exe" /c mkdir \\.\C:\ProgramData\Nul & attrib +r +h +s \\.\C:\ProgramData\Nul & powershell -Command Add-MpPreference -ExclusionPath @('C:\ProgramData', 'C:\Windows\system32\svchost.exe') -ExclusionExtension '.exe'2⤵
- Suspicious use of WriteProcessMemory
PID:4100 -
C:\Windows\system32\attrib.exeattrib +r +h +s \\.\C:\ProgramData\Nul3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4568
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command Add-MpPreference -ExclusionPath @('C:\ProgramData', 'C:\Windows\system32\svchost.exe') -ExclusionExtension '.exe'3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4660
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C:\Windows\SYSTEM32\cmd.exe"cmd.exe" /c sc create "nulhost" binpath="C:\ProgramData\Nul\nulhost.exe" start="auto"2⤵
- Suspicious use of WriteProcessMemory
PID:4220 -
C:\Windows\system32\sc.exesc create "nulhost" binpath="C:\ProgramData\Nul\nulhost.exe" start="auto"3⤵
- Launches sc.exe
PID:1748
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C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Documents\These.docx" /o ""1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2472
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\Desktop\ResolveFormat.vbe"1⤵PID:3568
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
- Size 2KB
- SHA256 85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
- MD5 627073ee3ca9676911bee35548eff2b8
- SHA1 4c4b68c65e2cab9864b51167d710aa29ebdcff2e
- SHA512 3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
- Size 944B
- SHA256 1bdc4f0e8c0845ba527337f1e791da5873c34dff15eb33c71a5aba89e4db4c80
- MD5 9e9cde84e97360fb39f64e3697c25587
- SHA1 02f67f54c54a08320a5331e464dc77b2816fbc97
- SHA512 c719f5adf610599f0e57df5241da9b3fb595839fcbf955acbf4007ebc75d400916cec75cf9f24f72be6118237641c7800ae9b4c28b585b71a63d02a5789ca044
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wecmk2u0.tjk.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat
- Size 202B
- SHA256 fe33f57205e2ebb981c4744d5a4ddc231f587a9a0589e6565c52e1051eadb0c0
- MD5 4566d1d70073cd75fe35acb78ff9d082
- SHA1 f602ecc057a3c19aa07671b34b4fdd662aa033cc
- SHA512 b9584ebfdd25cc588162dd6525a399c72ac03bf0c61709b96a19feba7217d840ae2c60d7b0d3b43307a2776f497a388e79ef8a646c12ae59a7f5cc4789bbf3c8
- MD5 SHA1 SHA512