Analysis
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max time kernel
92s -
max time network
115s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
28-05-2022 03:43
Static task
static1
Behavioral task
behavioral1
Sample
029921e48465c3c54acc10adf4a4c1daeaa3ef233c38c5760cdc0e4ba22b4d66.dll
Resource
win7-20220414-en
windows7_x64
0 signatures
0 seconds
General
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Target
029921e48465c3c54acc10adf4a4c1daeaa3ef233c38c5760cdc0e4ba22b4d66.dll
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Size
60KB
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MD5
1cab38f3724992740dc83ab2f6303188
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SHA1
2dab92c965b11af568b18471021d5cb0f00b0b89
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SHA256
029921e48465c3c54acc10adf4a4c1daeaa3ef233c38c5760cdc0e4ba22b4d66
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SHA512
e2ec8fbab7466f35e3c84447ffab473345139e9bc532fd4abb21ecfc5ab2f1b3a22c83516f8ded47cebf5de12e71be67de667526375b9aa3a978152dfe821bc6
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs
BHOs are DLL modules which act as plugins for Internet Explorer.
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Processes:
regsvr32.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_ERROR_CACHE\DefaultValue = "yes" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_ERROR_CACHE\UncheckedValue = "no" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Error Dlg Displayed On Every Error = "no" regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\New Windows\PopupMgr = "no" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_ERROR_CACHE\CheckedValue = "yes" regsvr32.exe -
Modifies registry class 41 IoCs
Processes:
regsvr32.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav.1\ = "Nav Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\ = "urlnav 1.0 Type Library" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ = "INav" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib\ = "{40195CA5-4EA4-4B10-88B3-5659A0A5310B}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\ = "Nav Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\029921e48465c3c54acc10adf4a4c1daeaa3ef233c38c5760cdc0e4ba22b4d66.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav\CLSID\ = "{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib\ = "{40195CA5-4EA4-4B10-88B3-5659A0A5310B}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav.1\CLSID\ = "{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\VersionIndependentProgID\ = "Urlnav.Nav" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ = "INav" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav\ = "Nav Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\ProgID\ = "Urlnav.Nav.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\029921e48465c3c54acc10adf4a4c1daeaa3ef233c38c5760cdc0e4ba22b4d66.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\HELPDIR regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
regsvr32.exedescription pid process target process PID 3996 wrote to memory of 4412 3996 regsvr32.exe regsvr32.exe PID 3996 wrote to memory of 4412 3996 regsvr32.exe regsvr32.exe PID 3996 wrote to memory of 4412 3996 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\029921e48465c3c54acc10adf4a4c1daeaa3ef233c38c5760cdc0e4ba22b4d66.dll1⤵
- Suspicious use of WriteProcessMemory
PID:3996 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\029921e48465c3c54acc10adf4a4c1daeaa3ef233c38c5760cdc0e4ba22b4d66.dll2⤵
- Modifies Internet Explorer settings
- Modifies registry class
PID:4412
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