4d25512b8f1e6ed8bc661e8d06f839099170853e6e509f835166078194cbadb8

Analysis

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

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General

Target

b3dec365df05ffc520ce608a18562144.dll
Size

1.6MB
MD5

b3dec365df05ffc520ce608a18562144
SHA1

4b48e94c5ee72db847ecca3a4051a6d4661c82be
SHA256

4d25512b8f1e6ed8bc661e8d06f839099170853e6e509f835166078194cbadb8
SHA512

2d8240e31fe78c5e203ae403260dbb1f3ced366072cf99c772116f75c0f57a32838dc19dfedcd346dccdb2eb48754ea268972cbb2692a836e44cc1713c7adb0a
SSDEEP

24576:7i4LWZoIALCwJ5jjSi4LWZoIALCwJ5jj7i4LWZoIALCwJ5jj:ODoIAFDoIAGDoIA

Score

1^/10

Malware Config

Signatures

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

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b3dec365df05ffc520ce608a18562144.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2892
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\b3dec365df05ffc520ce608a18562144.dll
  2⤵
  - Modifies registry class
  PID:880

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Malware Config

Signatures

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MITRE ATT&CK Matrix

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