Analysis
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max time kernel
150s -
max time network
202s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
03-12-2022 05:07
Static task
static1
Behavioral task
behavioral1
Sample
c89d615a9891de04bbba080321b66a59a9dd80bbd5c17f9968f9dfc39464223d.dll
Resource
win7-20220812-en
windows7-x64
4 signatures
150 seconds
General
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Target
c89d615a9891de04bbba080321b66a59a9dd80bbd5c17f9968f9dfc39464223d.dll
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Size
48KB
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MD5
d7bca1901601b81d92fc3724dece4f5a
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SHA1
726b533fac35e2b72cd50f0f278e5e4af32dfcce
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SHA256
c89d615a9891de04bbba080321b66a59a9dd80bbd5c17f9968f9dfc39464223d
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SHA512
6f0979014938945518d584dc1cbfb2358b0a7189cfe5d05a0e7e3794f9ced929b590b972b5e15c234c6357a826c6d7dbb0e5aeec61f938615c5798043ce89f8e
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SSDEEP
768:jUjW2Q+SOPN8w3/ZT8Ghcc4hOvlHwiiFhfskk6pfcPCwEs2x2Wgs5+dJBZmwXU6:v+SOV8YOFGqiiFes8cx2Wr+dJ5XU6
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs 2 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\{3C4B6AAC-67FB-49A9-B98E-5846910E769D} regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{3C4B6AAC-67FB-49A9-B98E-5846910E769D}\NoExplorer = "1" regsvr32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser regsvr32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\WebBrowser\ITBarLayout = 110000000000000000000000040000001f0000000000000001000000000000000000000005000000000400000000000002000000010000000000000004000000a100000000000000030000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 regsvr32.exe Set value (data) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\WebBrowser\ITBar7Layout = 130000000000000000000000040000001f0000000000000001000000000000000000000005000000000400000000000002000000010000000000000004000000a100000000000000030000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 regsvr32.exe -
Modifies registry class 11 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3C4B6AAC-67FB-49A9-B98E-5846910E769D}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\Shell regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shell\OpenHomePage regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3C4B6AAC-67FB-49A9-B98E-5846910E769D}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\c89d615a9891de04bbba080321b66a59a9dd80bbd5c17f9968f9dfc39464223d.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\Shell\OpenHomePage\Command regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shell\OpenHomePage\Command regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\Shell\OpenHomePage regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3C4B6AAC-67FB-49A9-B98E-5846910E769D} regsvr32.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2804 wrote to memory of 2152 2804 regsvr32.exe 82 PID 2804 wrote to memory of 2152 2804 regsvr32.exe 82 PID 2804 wrote to memory of 2152 2804 regsvr32.exe 82 PID 2152 wrote to memory of 4012 2152 regsvr32.exe 85 PID 2152 wrote to memory of 4012 2152 regsvr32.exe 85 PID 2152 wrote to memory of 4012 2152 regsvr32.exe 85
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\c89d615a9891de04bbba080321b66a59a9dd80bbd5c17f9968f9dfc39464223d.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2804 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\c89d615a9891de04bbba080321b66a59a9dd80bbd5c17f9968f9dfc39464223d.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2152 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe "C:\Users\Admin\AppData\Local\Temp\c89d615a9891de04bbba080321b66a59a9dd80bbd5c17f9968f9dfc39464223d.dll",DllGetObjectType3⤵PID:4012
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