Analysis
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max time kernel
146s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
25/02/2024, 11:44
Behavioral task
behavioral1
Sample
a3b2fe3e733e05a5608318976ce0465d.dll
Resource
win7-20240221-en
4 signatures
150 seconds
General
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Target
a3b2fe3e733e05a5608318976ce0465d.dll
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Size
36KB
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MD5
a3b2fe3e733e05a5608318976ce0465d
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SHA1
85eb5bdeca3d79ae7c600ed7a9f1c413204ac33d
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SHA256
00a9864daafe1372f941830afe78c445d92073ce01deb2c9bcf6326925a646f8
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SHA512
81e12a1b2ee20585c8da0ee1342b96476ec6ca88443d06e8277f92e87fa3a56ad46506527e05765d29c59d7da1189cd496b02c3ac2e227143147c2022757d104
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SSDEEP
768:YGDUli1neXPiBuicGcmHGvx1J+8FoJhZVqKagsxolMqAr1Bb5:YG+iUPau3xvNmJhaxDqAB
Malware Config
Signatures
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resource yara_rule behavioral2/memory/3868-0-0x0000000010000000-0x000000001005B000-memory.dmp upx -
Installs/modifies Browser Helper Object 2 TTPs 1 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\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B} regsvr32.exe -
Modifies registry class 60 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a3b2fe3e733e05a5608318976ce0465d.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\ = "IBhoApp" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}\Programmable regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}\1.0\HELPDIR regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\ = "IBhoApp" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MSApp.BhoApp\CurVer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MSApp.BhoApp\ = "BhoApp Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}\TypeLib\ = "{DC8305B3-1EE7-4d58-83EF-2C5BC6C6566C}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}\1.0\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MSApp.BhoApp.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MSApp.BhoApp.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MSApp.BhoApp.1\CLSID\ = "{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}\ = "BhoApp Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MSApp.BhoApp\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}\ProgID\ = "MSApp.BhoApp.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}\1.0\ = "MSApp 1.0 Type Library" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\TypeLib\ = "{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\TypeLib\ = "{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a3b2fe3e733e05a5608318976ce0465d.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MSApp.BhoApp regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MSApp.BhoApp\CLSID\ = "{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\TypeLib\ = "{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MSApp.BhoApp.1\ = "BhoApp Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\ = "_IBhoAppEvents" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5CCF3B40-253E-4D22-A790-C2A25DE3F25B}\TypeLib\ = "{DC8305B3-1EE7-4D58-83EF-2C5BC6C6566C}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MSApp.BhoApp\CurVer\ = "MSApp.BhoApp.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AAD1C6AD-10AB-4cae-97FB-0AADDEC8A14B}\VersionIndependentProgID\ = "MSApp.BhoApp" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\ = "_IBhoAppEvents" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3619035-750E-4A0A-8FB2-31D5C4BDC2D4}\TypeLib\Version = "1.0" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 5076 wrote to memory of 3868 5076 regsvr32.exe 89 PID 5076 wrote to memory of 3868 5076 regsvr32.exe 89 PID 5076 wrote to memory of 3868 5076 regsvr32.exe 89
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\a3b2fe3e733e05a5608318976ce0465d.dll1⤵
- Suspicious use of WriteProcessMemory
PID:5076 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\a3b2fe3e733e05a5608318976ce0465d.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:3868
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