Analysis
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max time kernel
7s -
max time network
4s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
31-12-2023 22:19
Static task
static1
Behavioral task
behavioral1
Sample
3b3507314cbaea6b26d764d2843148a6.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
3b3507314cbaea6b26d764d2843148a6.exe
Resource
win10v2004-20231215-en
General
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Target
3b3507314cbaea6b26d764d2843148a6.exe
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Size
748KB
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MD5
3b3507314cbaea6b26d764d2843148a6
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SHA1
13d8a76f25acfd731d942a0431a151893edf8d71
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SHA256
21058fc9748de5258181fc2aa099d1b82caf70218b39ceb5a4e36cbdc01c141a
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SHA512
ca57736ec1f242b9e715f87ab6596b207d1021fb87014ef7f52768983a3906f1168ca5721098cd9ab12b6c2b36c72f54a0d9154856ea64122c8c3add85a2ab23
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SSDEEP
12288:BenxWYKa5A932NNOoOLxOelra79eWJzPfww4dEBPeKqqPpHIY:BenMnpqhEOelK9ntwlENnW
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\WINDOWS\\Config\\csrss.exe" 3b3507314cbaea6b26d764d2843148a6.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 3b3507314cbaea6b26d764d2843148a6.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate 3b3507314cbaea6b26d764d2843148a6.exe -
Loads dropped DLL 4 IoCs
pid Process 2120 3b3507314cbaea6b26d764d2843148a6.exe 2120 3b3507314cbaea6b26d764d2843148a6.exe 2120 3b3507314cbaea6b26d764d2843148a6.exe 2120 3b3507314cbaea6b26d764d2843148a6.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\WINDOWS\SysWOW64\MSWINSCK.OCX 3b3507314cbaea6b26d764d2843148a6.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\WINDOWS\Config\csrss.exe 3b3507314cbaea6b26d764d2843148a6.exe File created C:\WINDOWS\Config\csrss.exe 3b3507314cbaea6b26d764d2843148a6.exe -
Modifies registry class 64 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32 3b3507314cbaea6b26d764d2843148a6.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D} 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\HELPDIR 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\Version = "1.0" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock.1\ = "Microsoft WinSock Control, version 6.0 (SP6)" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Version\ = "1.0" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ = "DMSWinsockControlEvents" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\InprocServer32 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock\CurVer\ = "MSWinsock.Winsock.1" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}\ = "Winsock General Property Page Object" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\HELPDIR\ 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\ = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D} 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\VersionIndependentProgID\ = "MSWinsock.Winsock" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D} 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D} 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\Version = "1.0" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\ = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}" 3b3507314cbaea6b26d764d2843148a6.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D} 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock.1\CLSID\ = "{248DD896-BB45-11CF-9ABC-0080C7E7B78D}" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\Version = "1.0" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ = "Microsoft WinSock Control, version 6.0 (SP6)" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32\ = "C:\\Windows\\SysWow64\\MSWINSCK.OCX" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ToolboxBitmap32 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\0\win32 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D} 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D} 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock.1 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\ = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories\{40FC6ED4-2438-11CF-A3DB-080036F12502} 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\0 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\0\win32\ = "C:\\Windows\\SysWow64\\MSWINSCK.OCX" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\ = "Audio Renderer Property Page" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock\CurVer 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ToolboxBitmap32\ = "C:\\Windows\\SysWow64\\MSWINSCK.OCX, 1" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories\{0DE86A52-2BAA-11CF-A229-00AA003D7352} 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ = "IMSWinsockControl" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\ = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32\ThreadingModel = "Apartment" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Programmable 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories\{40FC6ED5-2438-11CF-A3DB-080036F12502} 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\Version = "1.0" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ = "DMSWinsockControlEvents" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock\CLSID\ = "{248DD896-BB45-11CF-9ABC-0080C7E7B78D}" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ProgID 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ProgID\ = "MSWinsock.Winsock.1" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus\ = "0" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock\ = "Microsoft WinSock Control, version 6.0 (SP6)" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\VersionIndependentProgID 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories\{0DE86A57-2BAA-11CF-A229-00AA003D7352} 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\ = "Microsoft Winsock Control 6.0 (SP6)" 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E8DB602E-6034-3D8F-6723-3382669DC88A}\InprocServer32\ = "C:\\Windows\\SysWOW64\\quartz.dll" 3b3507314cbaea6b26d764d2843148a6.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Version 3b3507314cbaea6b26d764d2843148a6.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32\ = "C:\\Windows\\SysWow64\\MSWINSCK.OCX" 3b3507314cbaea6b26d764d2843148a6.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: 33 2120 3b3507314cbaea6b26d764d2843148a6.exe Token: SeIncBasePriorityPrivilege 2120 3b3507314cbaea6b26d764d2843148a6.exe Token: 33 2120 3b3507314cbaea6b26d764d2843148a6.exe Token: SeIncBasePriorityPrivilege 2120 3b3507314cbaea6b26d764d2843148a6.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2120 3b3507314cbaea6b26d764d2843148a6.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28 PID 2000 wrote to memory of 2120 2000 3b3507314cbaea6b26d764d2843148a6.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\3b3507314cbaea6b26d764d2843148a6.exe"C:\Users\Admin\AppData\Local\Temp\3b3507314cbaea6b26d764d2843148a6.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2000 -
C:\Users\Admin\AppData\Local\Temp\3b3507314cbaea6b26d764d2843148a6.exe"C:\Users\Admin\AppData\Local\Temp\3b3507314cbaea6b26d764d2843148a6.exe"2⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2120
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
121KB
MD5e8a2190a9e8ee5e5d2e0b599bbf9dda6
SHA14e97bf9519c83835da9db309e61ec87ddf165167
SHA25680ab0b86de58a657956b2a293bd9957f78e37e7383c86d6cd142208c153b6311
SHA51257f8473eedaf7e8aad3b5bcbb16d373fd6aaec290c3230033fc50b5ec220e93520b8915c936e758bb19107429a49965516425350e012f8db0de6d4f6226b42ee