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Analysis
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max time kernel
148s -
max time network
153s -
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, 04:47
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
bfe20105a54401e3f4ae91db4d0a8b2a.dll
Resource
win7-20240221-en
3 signatures
150 seconds
General
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Target
bfe20105a54401e3f4ae91db4d0a8b2a.dll
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Size
302KB
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MD5
bfe20105a54401e3f4ae91db4d0a8b2a
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SHA1
3246b4913f850ebbcb4bd88f162211298630d755
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SHA256
85279cdb549601f938ae929d024b180de87771379f48acbd500328371a3d1ec4
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SHA512
26073a40a3ec9fe918901bbbbafc5352f739fa8e9b2032d8e61d8d26a0cc48d91817b01c897e45c79ff61c9fbaa8509748e4d5aeae0855285a85d3d2a5f06de7
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SSDEEP
3072:boRwggd98flzRqRekEXdIKPQgprIhtIaT+0r7f5dnZs6QN+qEbre:b3J989zHk1fgHaS0r7xzK
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\{1094613F-84B6-4131-AEC1-71DF88291044} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1094613F-84B6-4131-AEC1-71DF88291044}\ = "LexlibPlugin" regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1094613F-84B6-4131-AEC1-71DF88291044}\NoExplorer = "1" regsvr32.exe -
Modifies registry class 64 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\xvideoplugin.JetMimeFiltr\CurVer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{047D87FD-BFC5-4AC3-9AD3-ACECC7B49016}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1094613F-84B6-4131-AEC1-71DF88291044}\ = "LexlibVideoPlugin Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\NumMethods\ = "7" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{047D87FD-BFC5-4AC3-9AD3-ACECC7B49016}\NumMethods\ = "7" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{047D87FD-BFC5-4AC3-9AD3-ACECC7B49016}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{047D87FD-BFC5-4AC3-9AD3-ACECC7B49016}\TypeLib\ = "{3A596471-ECBE-4AEE-B543-79AE8C8FF7A9}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\xvideoplugin.JetMimeFiltr\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\xvideoplugin.JetMimeFiltr\CurVer\ = "Lexlibplugin.LexlibMimeFiltr.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1094613F-84B6-4131-AEC1-71DF88291044}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1094613F-84B6-4131-AEC1-71DF88291044}\AppID = "{B0ED4726-5BC8-4E22-A7A8-3074A73CE64E}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{047D87FD-BFC5-4AC3-9AD3-ACECC7B49016} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\xvideoplugin.JetMimeFiltr regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1094613F-84B6-4131-AEC1-71DF88291044}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A596471-ECBE-4AEE-B543-79AE8C8FF7A9}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\ = "IJetVideoPlugin" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A596471-ECBE-4AEE-B543-79AE8C8FF7A9}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{047D87FD-BFC5-4AC3-9AD3-ACECC7B49016}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{047D87FD-BFC5-4AC3-9AD3-ACECC7B49016}\NumMethods regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BEFC54BA-36EB-4CFC-BA55-587361577A26}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BEFC54BA-36EB-4CFC-BA55-587361577A26}\Programmable regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\xvideoplugin.JetVideoPlugin\CLSID\ = "{1094613F-84B6-4131-AEC1-71DF88291044}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1094613F-84B6-4131-AEC1-71DF88291044}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BEFC54BA-36EB-4CFC-BA55-587361577A26}\ProgID\ = "Lexlib.LexlibMimeFiltr.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BEFC54BA-36EB-4CFC-BA55-587361577A26}\VersionIndependentProgID\ = "Lexlib.LexlibMimeFiltr" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A596471-ECBE-4AEE-B543-79AE8C8FF7A9}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bfe20105a54401e3f4ae91db4d0a8b2a.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{047D87FD-BFC5-4AC3-9AD3-ACECC7B49016}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BEFC54BA-36EB-4CFC-BA55-587361577A26}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A596471-ECBE-4AEE-B543-79AE8C8FF7A9} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A596471-ECBE-4AEE-B543-79AE8C8FF7A9}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1094613F-84B6-4131-AEC1-71DF88291044}\VersionIndependentProgID\ = "Lexlib.LexlibVideoPlugin" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{047D87FD-BFC5-4AC3-9AD3-ACECC7B49016}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\TypeLib\ = "{3A596471-ECBE-4AEE-B543-79AE8C8FF7A9}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\xvideoplugin.JetVideoPlugin.1\CLSID\ = "{1094613F-84B6-4131-AEC1-71DF88291044}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\pllib.DLL regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BEFC54BA-36EB-4CFC-BA55-587361577A26}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\xvideoplugin.JetVideoPlugin.1\ = "LexlibPlugin Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\ = "IJetVideoPlugin" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{B0ED4726-5BC8-4E22-A7A8-3074A73CE64E} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\NumMethods regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\ = "PSFactoryBuffer" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\xvideoplugin.JetVideoPlugin\ = "LexlibPlugin Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1094613F-84B6-4131-AEC1-71DF88291044}\ProgID\ = "Lexlib.LexlibVideoPlugin.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1094613F-84B6-4131-AEC1-71DF88291044}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bfe20105a54401e3f4ae91db4d0a8b2a.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{047D87FD-BFC5-4AC3-9AD3-ACECC7B49016}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A596471-ECBE-4AEE-B543-79AE8C8FF7A9}\1.0\FLAGS\ = "0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\TypeLib\ = "{3A596471-ECBE-4AEE-B543-79AE8C8FF7A9}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BEFC54BA-36EB-4CFC-BA55-587361577A26}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BEFC54BA-36EB-4CFC-BA55-587361577A26}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bfe20105a54401e3f4ae91db4d0a8b2a.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1094613F-84B6-4131-AEC1-71DF88291044}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1094613F-84B6-4131-AEC1-71DF88291044}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\xvideoplugin.JetVideoPlugin.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1094613F-84B6-4131-AEC1-71DF88291044} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{047D87FD-BFC5-4AC3-9AD3-ACECC7B49016}\TypeLib\ = "{3A596471-ECBE-4AEE-B543-79AE8C8FF7A9}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8E569E70-9E91-4CF9-820C-99DDC3A05A0C}\InProcServer32\ThreadingModel = "Both" regsvr32.exe Key created \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000_Classes\WOW6432Node\Interface regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BEFC54BA-36EB-4CFC-BA55-587361577A26}\AppID = "{B0ED4726-5BC8-4E22-A7A8-3074A73CE64E}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\xvideoplugin.JetVideoPlugin\CurVer\ = "Lexlib.LexlibVideoPlugin.1" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2012 wrote to memory of 4640 2012 regsvr32.exe 88 PID 2012 wrote to memory of 4640 2012 regsvr32.exe 88 PID 2012 wrote to memory of 4640 2012 regsvr32.exe 88
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\bfe20105a54401e3f4ae91db4d0a8b2a.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2012 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\bfe20105a54401e3f4ae91db4d0a8b2a.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:4640
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