Analysis
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max time kernel
42s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
29-11-2022 06:04
Static task
static1
Behavioral task
behavioral1
Sample
890d849c5b686c4ff07b69b1e51d20c3ea15ec15166f654e1ed73e429a8ad988.dll
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
890d849c5b686c4ff07b69b1e51d20c3ea15ec15166f654e1ed73e429a8ad988.dll
Resource
win10v2004-20221111-en
General
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Target
890d849c5b686c4ff07b69b1e51d20c3ea15ec15166f654e1ed73e429a8ad988.dll
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Size
236KB
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MD5
500bef7cb33ec8f47d99e66c1fa9d7b9
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SHA1
33cb508186f3058c1603b34d46dc1bcafd52874c
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SHA256
890d849c5b686c4ff07b69b1e51d20c3ea15ec15166f654e1ed73e429a8ad988
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SHA512
db173886bfdb47bd385299a7e919dedce2c178d7377194d1cb1a33b88a8926535dccd83d101c7f9b8203aaa5962d2efc8a516a2a8d0a1d8c93828d95c0564583
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SSDEEP
6144:oIOuRLOKTh2if+qb23d6FSTQV8Kq/7bu6:oHmLBdzMEMTQSq
Malware Config
Signatures
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Sets file execution options in registry 2 TTPs 2 IoCs
Processes:
regsvr32.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe\Debugger = "C:\\Windows\\system32\\ctfmonyru.exe" regsvr32.exe -
Installs/modifies Browser Helper Object 2 TTPs 3 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
Processes:
regsvr32.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F} regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F}\IExplore = "1" regsvr32.exe -
Drops file in System32 directory 1 IoCs
Processes:
regsvr32.exedescription ioc process File created C:\Windows\SysWOW64\ctfmonyru.exe regsvr32.exe -
Modifies registry class 41 IoCs
Processes:
regsvr32.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID\ = "{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F}\VersionIndependentProgID\ = "D" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\890d849c5b686c4ff07b69b1e51d20c3ea15ec15166f654e1ed73e429a8ad988.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F}\ = "D" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F}\ProgID\ = "D.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F}\1.0\0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F}\1.0\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\TypeLib\ = "{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\890d849c5b686c4ff07b69b1e51d20c3ea15ec15166f654e1ed73e429a8ad988.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\ = "IDOMPeek" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\ = "IDOMPeek" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D8C2674B-5E97-344F-A299-93155B96CC1B}\TypeLib\ = "{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EE8E5AF6-E365-3F1A-97B3-B943512A1D5F}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F}\1.0\ = "LIB" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D0FFAF87-3BDC-3D79-94F5-863BFC69EC4F}\1.0\HELPDIR regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
regsvr32.exedescription pid process target process PID 564 wrote to memory of 1664 564 regsvr32.exe regsvr32.exe PID 564 wrote to memory of 1664 564 regsvr32.exe regsvr32.exe PID 564 wrote to memory of 1664 564 regsvr32.exe regsvr32.exe PID 564 wrote to memory of 1664 564 regsvr32.exe regsvr32.exe PID 564 wrote to memory of 1664 564 regsvr32.exe regsvr32.exe PID 564 wrote to memory of 1664 564 regsvr32.exe regsvr32.exe PID 564 wrote to memory of 1664 564 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\890d849c5b686c4ff07b69b1e51d20c3ea15ec15166f654e1ed73e429a8ad988.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\890d849c5b686c4ff07b69b1e51d20c3ea15ec15166f654e1ed73e429a8ad988.dll2⤵
- Sets file execution options in registry
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Modifies registry class