Analysis
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max time kernel
93s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
27/01/2024, 18:08
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
7aeb2c19d5b2a35ebeb2468df2ceb583.dll
Resource
win7-20231215-en
4 signatures
150 seconds
General
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Target
7aeb2c19d5b2a35ebeb2468df2ceb583.dll
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Size
460KB
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MD5
7aeb2c19d5b2a35ebeb2468df2ceb583
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SHA1
fdca0a638577c0342c4e00b90886e98ff226a301
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SHA256
75edd51657041ea9742ebc172beaaab9c831382273520bb8dc97f81113535c63
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SHA512
4640d555c29d66f654a6546c4456f98d665aef0a70d59e3af0cb1693f33c2f4eafbef1cf4d60b07c5553e78b13fb7f07fdef00da3cdf450159439d04fea7cc44
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SSDEEP
6144:8o+T9pUXElkR9uhX8+lz5oicr/DL2Yv37KdRU5Np+M8DVBku8Z8iLprup0yY3Xhj:0pUUlXs+lzf5QNpx8HYxuprEhpeC
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs 2 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\{CF5159C2-895C-4188-98D5-748318E55F76} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{CF5159C2-895C-4188-98D5-748318E55F76}\ regsvr32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\New Windows\Allow regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\New Windows\Allow\*.cn.yahoo.com regsvr32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\New Windows\Allow\*.baidu.com regsvr32.exe -
Modifies registry class 11 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF5159C2-895C-4188-98D5-748318E55F76}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF5159C2-895C-4188-98D5-748318E55F76}\ProgID\ = "7aeb2c19d5b2a35ebeb2468df2ceb583.IEBHO" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF5159C2-895C-4188-98D5-748318E55F76}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF5159C2-895C-4188-98D5-748318E55F76}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\7aeb2c19d5b2a35ebeb2468df2ceb583.IEBHO\Clsid regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\7aeb2c19d5b2a35ebeb2468df2ceb583.IEBHO\Clsid\ = "{CF5159C2-895C-4188-98D5-748318E55F76}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\7aeb2c19d5b2a35ebeb2468df2ceb583.IEBHO\ regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF5159C2-895C-4188-98D5-748318E55F76} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF5159C2-895C-4188-98D5-748318E55F76}\ regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF5159C2-895C-4188-98D5-748318E55F76}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7aeb2c19d5b2a35ebeb2468df2ceb583.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\7aeb2c19d5b2a35ebeb2468df2ceb583.IEBHO regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2608 wrote to memory of 4288 2608 regsvr32.exe 86 PID 2608 wrote to memory of 4288 2608 regsvr32.exe 86 PID 2608 wrote to memory of 4288 2608 regsvr32.exe 86
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\7aeb2c19d5b2a35ebeb2468df2ceb583.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2608 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\7aeb2c19d5b2a35ebeb2468df2ceb583.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
PID:4288
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