Analysis
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max time kernel
90s -
max time network
125s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
02/02/2024, 23:08
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
VirusShare-00efc2138fb93c75f956cf23061bb01f.dll
Resource
win7-20231215-en
3 signatures
150 seconds
General
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Target
VirusShare-00efc2138fb93c75f956cf23061bb01f.dll
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Size
566KB
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MD5
00efc2138fb93c75f956cf23061bb01f
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SHA1
9fb403936c211d40d2c5358de058964b5cafb330
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SHA256
2ee7e5ed09ca039adad1309e7aef963c1e6e9ee2d4982dbe6e7a6b013c5b4961
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SHA512
acf86066358727edf3bd1c3c1dfa3ee8a1a94b6506bc0fbb687f7d1fab8eb110a866549337b9b5ea60f307d30611a85debd3a36977ab99cdcf8078f0959bb1b6
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SSDEEP
12288:xyA1ZdqVfv/6HftOIA3+00wstpSdCi3TLdrviVzgnn/zup1VBwp:x1fqZCHwIr00taCiHR6Vqn/S1
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs 1 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\{CC01FC6C-4865-6896-68B7-8553B42168AA} regsvr32.exe -
Modifies registry class 11 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\VirusShare-00efc2138fb93c75f956cf23061bb01f.xx\Clsid\ = "{CC01FC6C-4865-6896-68B7-8553B42168AA}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-4865-6896-68B7-8553B42168AA} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-4865-6896-68B7-8553B42168AA}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-4865-6896-68B7-8553B42168AA}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\VirusShare-00efc2138fb93c75f956cf23061bb01f.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\VirusShare-00efc2138fb93c75f956cf23061bb01f.xx regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\VirusShare-00efc2138fb93c75f956cf23061bb01f.xx\ = "xx" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\VirusShare-00efc2138fb93c75f956cf23061bb01f.xx\Clsid regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-4865-6896-68B7-8553B42168AA}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-4865-6896-68B7-8553B42168AA}\ProgID\ = "VirusShare-00efc2138fb93c75f956cf23061bb01f.xx" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-4865-6896-68B7-8553B42168AA}\ = "xx" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-4865-6896-68B7-8553B42168AA}\InprocServer32 regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1320 wrote to memory of 3844 1320 regsvr32.exe 12 PID 1320 wrote to memory of 3844 1320 regsvr32.exe 12 PID 1320 wrote to memory of 3844 1320 regsvr32.exe 12
Processes
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\VirusShare-00efc2138fb93c75f956cf23061bb01f.dll1⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:3844
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\VirusShare-00efc2138fb93c75f956cf23061bb01f.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1320