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Analysis
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max time kernel
117s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
22/12/2023, 13:59
Static task
static1
Behavioral task
behavioral1
Sample
b3dec365df05ffc520ce608a18562144.dll
Resource
win7-20231129-en
2 signatures
150 seconds
Behavioral task
behavioral2
Sample
b3dec365df05ffc520ce608a18562144.dll
Resource
win10v2004-20231215-en
2 signatures
150 seconds
General
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Target
b3dec365df05ffc520ce608a18562144.dll
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Size
1.6MB
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MD5
b3dec365df05ffc520ce608a18562144
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SHA1
4b48e94c5ee72db847ecca3a4051a6d4661c82be
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SHA256
4d25512b8f1e6ed8bc661e8d06f839099170853e6e509f835166078194cbadb8
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SHA512
2d8240e31fe78c5e203ae403260dbb1f3ced366072cf99c772116f75c0f57a32838dc19dfedcd346dccdb2eb48754ea268972cbb2692a836e44cc1713c7adb0a
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SSDEEP
24576:7i4LWZoIALCwJ5jjSi4LWZoIALCwJ5jj7i4LWZoIALCwJ5jj:ODoIAFDoIAGDoIA
Score
1/10
Malware Config
Signatures
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Modifies registry class 15 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e21a7345-eb21-468e-be50-804db97cf708}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b3dec365df05ffc520ce608a18562144.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{c1e3f122-a2ea-442c-854f-20d98f8357a1}\InProcServer32\ThreadingModel = "Both" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{f4769300-b949-4df9-b333-00d33932e9a6}\ = "AudioReverb" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{f4769300-b949-4df9-b333-00d33932e9a6}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b3dec365df05ffc520ce608a18562144.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e21a7345-eb21-468e-be50-804db97cf708}\ = "XAudio2" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e21a7345-eb21-468e-be50-804db97cf708}\InProcServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{c1e3f122-a2ea-442c-854f-20d98f8357a1}\ = "AudioVolumeMeter" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{f4769300-b949-4df9-b333-00d33932e9a6} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e21a7345-eb21-468e-be50-804db97cf708}\InProcServer32\ThreadingModel = "Both" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{c1e3f122-a2ea-442c-854f-20d98f8357a1}\InProcServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{f4769300-b949-4df9-b333-00d33932e9a6}\InProcServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{e21a7345-eb21-468e-be50-804db97cf708} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{c1e3f122-a2ea-442c-854f-20d98f8357a1} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{c1e3f122-a2ea-442c-854f-20d98f8357a1}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b3dec365df05ffc520ce608a18562144.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{f4769300-b949-4df9-b333-00d33932e9a6}\InProcServer32\ThreadingModel = "Both" regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2892 wrote to memory of 880 2892 regsvr32.exe 28 PID 2892 wrote to memory of 880 2892 regsvr32.exe 28 PID 2892 wrote to memory of 880 2892 regsvr32.exe 28 PID 2892 wrote to memory of 880 2892 regsvr32.exe 28 PID 2892 wrote to memory of 880 2892 regsvr32.exe 28 PID 2892 wrote to memory of 880 2892 regsvr32.exe 28 PID 2892 wrote to memory of 880 2892 regsvr32.exe 28
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\b3dec365df05ffc520ce608a18562144.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2892 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\b3dec365df05ffc520ce608a18562144.dll2⤵
- Modifies registry class
PID:880
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