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Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
11/03/2024, 13:02
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
c0a77ca117aa9e9c601d63d2461998e0.dll
Resource
win7-20240215-en
3 signatures
150 seconds
General
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Target
c0a77ca117aa9e9c601d63d2461998e0.dll
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Size
286KB
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MD5
c0a77ca117aa9e9c601d63d2461998e0
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SHA1
aa51410d99179f44a587ba533ec445107ab3b96c
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SHA256
835db7c92e56ccc0260d12e7c8defb62f676ede7fe52b61f7ba0237226494953
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SHA512
06137a2e7540a206228f0d93aef39a6f8e84f03d612003590d070249354e4e2f74bf0a711a37d2452d265a16511a4f887b2795d5d23bd15d18066b4773a53e48
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SSDEEP
6144:lFwcLqg3g9ebxExkIRrwzXaayIN0KdTLl:kgpbxEKOrwzXaaynu
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs 3 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{21608B66-026F-4DCB-9244-0DACA328DCED} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{21608B66-026F-4DCB-9244-0DACA328DCED}\ = "PlaySushi" regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{21608B66-026F-4DCB-9244-0DACA328DCED}\NoExplorer = "1" regsvr32.exe -
Modifies registry class 64 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{21608B66-026F-4DCB-9244-0DACA328DCED}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{21608B66-026F-4DCB-9244-0DACA328DCED}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{45A8F904-D9CA-439B-9CBB-11097B45D9E1}\ = "IIEButton" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\PlaySushi32.PlaySushi\CLSID\ = "{21608B66-026F-4DCB-9244-0DACA328DCED}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{21608B66-026F-4DCB-9244-0DACA328DCED} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{45A8F904-D9CA-439B-9CBB-11097B45D9E1} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\PSText.IEButton.1\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{45A8F904-D9CA-439B-9CBB-11097B45D9E1}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5272CCD4-4199-4B04-BF68-B28A0DCF0151}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\PlaySushi32.PlaySushi.1\ = "PlaySushi" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F165085B-6B85-4AD5-AD00-95552A823F6D}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{45A8F904-D9CA-439B-9CBB-11097B45D9E1}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{21608B66-026F-4DCB-9244-0DACA328DCED}\ = "PlaySushi" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{21608B66-026F-4DCB-9244-0DACA328DCED}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{975BBCC0-19DF-47C2-9AE2-D78EEFA96821}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\PSText.IEButton.1\CLSID\ = "{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{975BBCC0-19DF-47C2-9AE2-D78EEFA96821}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F165085B-6B85-4AD5-AD00-95552A823F6D}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\c0a77ca117aa9e9c601d63d2461998e0.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F165085B-6B85-4AD5-AD00-95552A823F6D}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\PSText.IEButton\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{21608B66-026F-4DCB-9244-0DACA328DCED}\VersionIndependentProgID\ = "PlaySushi32.PlaySushi" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F165085B-6B85-4AD5-AD00-95552A823F6D}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\PSText.IEButton regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5272CCD4-4199-4B04-BF68-B28A0DCF0151}\ = "IPlugin" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5272CCD4-4199-4B04-BF68-B28A0DCF0151} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5272CCD4-4199-4B04-BF68-B28A0DCF0151}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{45A8F904-D9CA-439B-9CBB-11097B45D9E1}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5272CCD4-4199-4B04-BF68-B28A0DCF0151}\TypeLib\ = "{975BBCC0-19DF-47C2-9AE2-D78EEFA96821}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{21608B66-026F-4DCB-9244-0DACA328DCED}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{45A8F904-D9CA-439B-9CBB-11097B45D9E1} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{45A8F904-D9CA-439B-9CBB-11097B45D9E1}\TypeLib\ = "{975BBCC0-19DF-47C2-9AE2-D78EEFA96821}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5272CCD4-4199-4B04-BF68-B28A0DCF0151}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB}\TypeLib\ = "{975BBCC0-19DF-47C2-9AE2-D78EEFA96821}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F165085B-6B85-4AD5-AD00-95552A823F6D}\TypeLib\ = "{975BBCC0-19DF-47C2-9AE2-D78EEFA96821}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5272CCD4-4199-4B04-BF68-B28A0DCF0151}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB}\ProgID\ = "PSText.IEButton.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{21608B66-026F-4DCB-9244-0DACA328DCED}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{975BBCC0-19DF-47C2-9AE2-D78EEFA96821} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\PSText.DLL regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F165085B-6B85-4AD5-AD00-95552A823F6D}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{45A8F904-D9CA-439B-9CBB-11097B45D9E1}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F165085B-6B85-4AD5-AD00-95552A823F6D}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F165085B-6B85-4AD5-AD00-95552A823F6D}\ = "_IPluginEvents" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\PSText.IEButton\CLSID\ = "{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\PSText.IEButton\CurVer\ = "PSText.IEButton.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{EBD24BD3-E272-4FA3-A8BA-C5D709757CAB}\ = "GoPlaySushi" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F165085B-6B85-4AD5-AD00-95552A823F6D}\TypeLib\ = "{975BBCC0-19DF-47C2-9AE2-D78EEFA96821}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\PSText.IEButton\ = "IEButton Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5272CCD4-4199-4B04-BF68-B28A0DCF0151}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{E89A07B5-BD7A-43F9-BDA4-0DAA48AC4FA5}\ = "PlaySushi32" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\PSText.IEButton.1\ = "IEButton Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\PlaySushi32.PlaySushi\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{E89A07B5-BD7A-43F9-BDA4-0DAA48AC4FA5} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5272CCD4-4199-4B04-BF68-B28A0DCF0151}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\PlaySushi32.PlaySushi\CurVer\ = "PlaySushi32.PlaySushi.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{21608B66-026F-4DCB-9244-0DACA328DCED}\ProgID\ = "PlaySushi32.PlaySushi.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{45A8F904-D9CA-439B-9CBB-11097B45D9E1}\ = "IIEButton" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4980 wrote to memory of 3488 4980 regsvr32.exe 88 PID 4980 wrote to memory of 3488 4980 regsvr32.exe 88 PID 4980 wrote to memory of 3488 4980 regsvr32.exe 88
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\c0a77ca117aa9e9c601d63d2461998e0.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4980 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\c0a77ca117aa9e9c601d63d2461998e0.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:3488
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