Analysis
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max time kernel
151s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
26-12-2023 18:27
Behavioral task
behavioral1
Sample
8421f8570a49d3d35cef3f80d19c28cb.dll
Resource
win7-20231215-en
windows7-x64
4 signatures
150 seconds
General
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Target
8421f8570a49d3d35cef3f80d19c28cb.dll
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Size
205KB
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MD5
8421f8570a49d3d35cef3f80d19c28cb
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SHA1
27fe73cb4b97a7617623618097e96aa97c071073
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SHA256
d3a3097befc50532143070cff5e5908e7e935bb172f29ef5a267c8cc652ec0fa
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SHA512
dd2e54465cff916ecc53b493669c006e3bd123eaed44434498c9e415e029f184d352620f6c100def8702d8eeb05a4fd50a8a8307d44a08fcb01daf04b6e740aa
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SSDEEP
3072:sFCyT9QzsNQYoKSFlbDJct1p4nZYNEO+1BlIf9ZvUMnTP/cl50jsi7Wt/TQ:EhyxMSFlDyphEnkPb/djB
Malware Config
Signatures
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Processes:
resource yara_rule behavioral2/memory/2428-0-0x0000000000810000-0x000000000089B000-memory.dmp upx -
Installs/modifies Browser Helper Object 2 TTPs 1 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
Processes:
regsvr32.exedescription ioc process Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D045A6CC-D55C-4312-A987-B663549BBBAF} regsvr32.exe -
Modifies registry class 5 IoCs
Processes:
regsvr32.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D045A6CC-D55C-4312-A987-B663549BBBAF}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D045A6CC-D55C-4312-A987-B663549BBBAF} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D045A6CC-D55C-4312-A987-B663549BBBAF}\ regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D045A6CC-D55C-4312-A987-B663549BBBAF}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D045A6CC-D55C-4312-A987-B663549BBBAF}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8421f8570a49d3d35cef3f80d19c28cb.dll" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
regsvr32.exedescription pid process target process PID 3260 wrote to memory of 2428 3260 regsvr32.exe regsvr32.exe PID 3260 wrote to memory of 2428 3260 regsvr32.exe regsvr32.exe PID 3260 wrote to memory of 2428 3260 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\8421f8570a49d3d35cef3f80d19c28cb.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\8421f8570a49d3d35cef3f80d19c28cb.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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memory/2428-0-0x0000000000810000-0x000000000089B000-memory.dmpFilesize
556KB