Analysis
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max time kernel
49s -
max time network
130s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
30-12-2023 14:24
Behavioral task
behavioral1
Sample
1b55230be722a85a8c3e6c7f8ebeeaed.dll
Resource
win7-20231215-en
windows7-x64
4 signatures
150 seconds
General
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Target
1b55230be722a85a8c3e6c7f8ebeeaed.dll
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Size
116KB
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MD5
1b55230be722a85a8c3e6c7f8ebeeaed
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SHA1
7a229d7ec1e42577fa41b7a57594e6517128f639
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SHA256
8e0926500186cded3ea82dcf8acc78c71e0ee9e17295828afd1393960bfb24f5
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SHA512
ee1034736f54d5011653219c015511c5b2260540cc90052dd817c8a3b990a98e21341dfe69bf194db98e36bffe5ccba5f10d71323cafd49f52312f0065f43b4a
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SSDEEP
3072:SGa3UVdiUHXq6O6rDWqJG+22m5NcjkEWYXhT:St4diUo6PWqJGomMgSXB
Malware Config
Signatures
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resource yara_rule behavioral2/memory/4772-0-0x0000000010000000-0x0000000010057000-memory.dmp upx behavioral2/memory/4772-20155-0x0000000010000000-0x0000000010057000-memory.dmp upx behavioral2/memory/4772-41110-0x0000000010000000-0x0000000010057000-memory.dmp upx behavioral2/memory/4772-51443-0x0000000010000000-0x0000000010057000-memory.dmp upx behavioral2/memory/4772-62504-0x0000000010000000-0x0000000010057000-memory.dmp upx behavioral2/memory/4772-84022-0x0000000010000000-0x0000000010057000-memory.dmp upx behavioral2/memory/4772-105953-0x0000000010000000-0x0000000010057000-memory.dmp upx -
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\{500BCA15-57A7-4eaf-8143-8C619470B13D} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{500BCA15-57A7-4eaf-8143-8C619470B13D}\ = "XML module" regsvr32.exe -
Modifies registry class 27 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\XML.XML.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1b55230be722a85a8c3e6c7f8ebeeaed.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\XML.XML\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\XML.XML\CLSID\ = "{500BCA15-57A7-4eaf-8143-8C619470B13D}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\ = "XML Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\ProgID\ = "XML.XML.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5D2631E5-8696-7543-50B2-F674CD4308EB} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5D2631E5-8696-7543-50B2-F674CD4308EB}\.0\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1b55230be722a85a8c3e6c7f8ebeeaed.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5D2631E5-8696-7543-50B2-F674CD4308EB}\.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5D2631E5-8696-7543-50B2-F674CD4308EB}\.0\ = "XML Library" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\VersionIndependentProgID\ = "XML.XML" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\XML.XML\ = "XML Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\XML.XML.1\ = "XML Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\XML.XML regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\XML.XML\CurVer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\XML.XML.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\Install = "OK" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\TypeLib\ = "{5D2631E5-8696-7543-50B2-F674CD4308EB}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\XML.XML\CurVer\ = "XML.XML.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\XML.XML.1\CLSID\ = "{500BCA15-57A7-4eaf-8143-8C619470B13D}" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4256 wrote to memory of 4772 4256 regsvr32.exe 89 PID 4256 wrote to memory of 4772 4256 regsvr32.exe 89 PID 4256 wrote to memory of 4772 4256 regsvr32.exe 89
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\1b55230be722a85a8c3e6c7f8ebeeaed.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4256 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\1b55230be722a85a8c3e6c7f8ebeeaed.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:4772
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