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Analysis
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max time kernel
147s -
max time network
169s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
31/12/2023, 04:23
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
28002cb53ae703afe6614ec1a00b1a32.dll
Resource
win7-20231215-en
3 signatures
150 seconds
General
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Target
28002cb53ae703afe6614ec1a00b1a32.dll
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Size
550KB
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MD5
28002cb53ae703afe6614ec1a00b1a32
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SHA1
e5e261338990253033d8da616652f76af793b96c
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SHA256
3ce709d531cce94223043f32774dc38bf00940bc9c0826fb074085a139e7a7ad
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SHA512
38835ab8d29c5fc1739d55e076598f5154b5c3c6f0095d4d8d1fca7ea7a085004603f10d5ab07fd26258fd26eadd9d4fcc95c01523e69e7e70701c726be8690a
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SSDEEP
12288:1fWcjwdhgsqkopLEqpNJ4rwCzALCppFhTiJ:9ncqkopI4NpCzAWppbTi
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\{03C12478-A0D3-4291-A535-F6D16BA08D68} regsvr32.exe -
Modifies registry class 11 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\28002cb53ae703afe6614ec1a00b1a32.XunBHoSwf regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\28002cb53ae703afe6614ec1a00b1a32.XunBHoSwf\Clsid\ = "{03C12478-A0D3-4291-A535-F6D16BA08D68}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{03C12478-A0D3-4291-A535-F6D16BA08D68}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{03C12478-A0D3-4291-A535-F6D16BA08D68}\ = "ExSwfTrc" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{03C12478-A0D3-4291-A535-F6D16BA08D68}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\28002cb53ae703afe6614ec1a00b1a32.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{03C12478-A0D3-4291-A535-F6D16BA08D68}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\28002cb53ae703afe6614ec1a00b1a32.XunBHoSwf\ = "ExSwfTrc" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\28002cb53ae703afe6614ec1a00b1a32.XunBHoSwf\Clsid regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{03C12478-A0D3-4291-A535-F6D16BA08D68}\ProgID\ = "28002cb53ae703afe6614ec1a00b1a32.XunBHoSwf" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{03C12478-A0D3-4291-A535-F6D16BA08D68} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{03C12478-A0D3-4291-A535-F6D16BA08D68}\InprocServer32 regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1344 wrote to memory of 3612 1344 regsvr32.exe 90 PID 1344 wrote to memory of 3612 1344 regsvr32.exe 90 PID 1344 wrote to memory of 3612 1344 regsvr32.exe 90
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\28002cb53ae703afe6614ec1a00b1a32.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1344 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\28002cb53ae703afe6614ec1a00b1a32.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:3612
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