Analysis
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max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
21-03-2024 16:57
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
dc2383f4599468e25aa2ce7667f4a6d7.dll
Resource
win7-20240221-en
3 signatures
150 seconds
General
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Target
dc2383f4599468e25aa2ce7667f4a6d7.dll
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Size
641KB
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MD5
dc2383f4599468e25aa2ce7667f4a6d7
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SHA1
d40916498599144075e438596f70b524c226dde5
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SHA256
5702aed42683bc3525f61e50f51c1b62efea18449b28a768409357047c354db6
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SHA512
8befc04851afc427feeaa534c3133d618db6f48ace9dc2a51bd720d677f7ea9f5eee9a275d0cda2f7dec8ff6229513001e2a6ba3ac2dc611740a15b81850d53b
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SSDEEP
12288:w0Et9YDc5DMWfT44XUDxoyiD02sHtaaE3yhcI2tePm:YtWDc/EXouPt1Eih5A+
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-8D48-297E-2216-7632A8B1438C} regsvr32.exe -
Modifies registry class 11 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-8D48-297E-2216-7632A8B1438C}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-8D48-297E-2216-7632A8B1438C}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\dc2383f4599468e25aa2ce7667f4a6d7.brm inc\ = "brm inc" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\dc2383f4599468e25aa2ce7667f4a6d7.brm inc\Clsid regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\dc2383f4599468e25aa2ce7667f4a6d7.brm inc\Clsid\ = "{CC01FC6C-8D48-297E-2216-7632A8B1438C}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-8D48-297E-2216-7632A8B1438C} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-8D48-297E-2216-7632A8B1438C}\ = "brm inc" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-8D48-297E-2216-7632A8B1438C}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-8D48-297E-2216-7632A8B1438C}\ProgID\ = "dc2383f4599468e25aa2ce7667f4a6d7.brm inc" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-8D48-297E-2216-7632A8B1438C}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dc2383f4599468e25aa2ce7667f4a6d7.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\dc2383f4599468e25aa2ce7667f4a6d7.brm inc regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2604 wrote to memory of 4876 2604 regsvr32.exe 89 PID 2604 wrote to memory of 4876 2604 regsvr32.exe 89 PID 2604 wrote to memory of 4876 2604 regsvr32.exe 89
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\dc2383f4599468e25aa2ce7667f4a6d7.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2604 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\dc2383f4599468e25aa2ce7667f4a6d7.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:4876
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