fe76f77d15f401a592f6fa149958f3dfa56c428f7fd15299cb54278fb2c66a22

Analysis

max time kernel
131s
max time network
183s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
24-11-2022 16:25

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General

Target

MSSTDFMT.dll
Size

116KB
MD5

182f9ab07e664485cf6365a48c6eb320
SHA1

2998b03b64ce467d2e0a49a7da6a5d00cc60bfc1
SHA256

dd128783a1488cb20fca1990ec351b6b5f9feec9303eb40e427e3ec5f5153ae9
SHA512

33b0015e79c35d5b1c9acb18637709418e5fa424c954e7a42b1d2ac12b5a1d452e5e7c3b874d5f6acb26552457f21cab60ffd599d8927e73ef262227097d1fbc
SSDEEP

3072:45yxziOUO3nyA1HVrG7qPtvrb60+g/AgSRUqG:45yxzF3TLPrb6btnZ

Score

1^/10

Malware Config

Signatures

Modifies registry class 64 IoCs

Processes:

regsvr32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6C51B910-900B-11D0-9484-00A0C91110ED}\ = "IStdDataFormatDisp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{99FF4676-FFC3-11D0-BD02-00C04FC2FB86}\ = "IStdDataFormatsDisp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{699DDBCC-DC7E-11D0-BCF7-00C04FC2FB86}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSSTDFMT.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6B263850-900B-11D0-9484-00A0C91110ED}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{99FF4677-FFC3-11D0-BD02-00C04FC2FB86}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{99FF4677-FFC3-11D0-BD02-00C04FC2FB86}\Implemented Categories	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5DE7A180-91B1-11D0-9484-00A0C91110ED}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{6C51B910-900B-11D0-9484-00A0C91110ED}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSSTDFMT.StdDataFormat	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSSTDFMT.StdDataValue\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6B263850-900B-11D0-9484-00A0C91110ED}\1.0\HELPDIR\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E675F3F0-91B5-11D0-9484-00A0C91110ED}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C2F13ED0-91B0-11D0-9484-00A0C91110ED}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C2F13ED0-91B0-11D0-9484-00A0C91110ED}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D835690-900B-11D0-9484-00A0C91110ED}\Implemented Categories\{40FC6ED5-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2B11E9B0-9F09-11D0-9484-00A0C91110ED}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2F13ED0-91B0-11D0-9484-00A0C91110ED}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2F13ED0-91B0-11D0-9484-00A0C91110ED}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D835690-900B-11D0-9484-00A0C91110ED}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E675F3F0-91B5-11D0-9484-00A0C91110ED}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E675F3F0-91B5-11D0-9484-00A0C91110ED}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5DE7A180-91B1-11D0-9484-00A0C91110ED}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A1741EF6-FFC6-11D0-BD02-00C04FC2FB86}\ = "IDataFormatsDisp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A1741EF6-FFC6-11D0-BD02-00C04FC2FB86}\TypeLib\Version = "1.0"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D835690-900B-11D0-9484-00A0C91110ED}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSSTDFMT.StdDataFormats\ = "StdDataFormats Object"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{699DDBCC-DC7E-11D0-BCF7-00C04FC2FB86}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{99FF4677-FFC3-11D0-BD02-00C04FC2FB86}\ = "StdDataFormats Object"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C2F13ED0-91B0-11D0-9484-00A0C91110ED}\ = "IStdDataFormatEvents"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{99FF4676-FFC3-11D0-BD02-00C04FC2FB86}\ = "IStdDataFormatsDisp"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D835690-900B-11D0-9484-00A0C91110ED}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSSTDFMT.StdDataValue.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6C51B910-900B-11D0-9484-00A0C91110ED}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D835690-900B-11D0-9484-00A0C91110ED}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{6C51B910-900B-11D0-9484-00A0C91110ED}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2B11E9B0-9F09-11D0-9484-00A0C91110ED}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2B11E9B0-9F09-11D0-9484-00A0C91110ED}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{699DDBCC-DC7E-11D0-BCF7-00C04FC2FB86}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2F13ED0-91B0-11D0-9484-00A0C91110ED}\ = "IStdDataFormatEvents"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2F13ED0-91B0-11D0-9484-00A0C91110ED}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A1741EF6-FFC6-11D0-BD02-00C04FC2FB86}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSSTDFMT.StdDataFormat\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSSTDFMT.StdDataValue\CurVer\ = "MSSTDFMT.StdDataValue.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{99FF4676-FFC3-11D0-BD02-00C04FC2FB86}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E675F3F0-91B5-11D0-9484-00A0C91110ED}\ = "IDataFormatDisp"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C2F13ED0-91B0-11D0-9484-00A0C91110ED}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{6C51B910-900B-11D0-9484-00A0C91110ED}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D835690-900B-11D0-9484-00A0C91110ED}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{99FF4677-FFC3-11D0-BD02-00C04FC2FB86}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2F13ED0-91B0-11D0-9484-00A0C91110ED}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2B11E9B0-9F09-11D0-9484-00A0C91110ED}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{99FF4677-FFC3-11D0-BD02-00C04FC2FB86}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{6C51B910-900B-11D0-9484-00A0C91110ED}\ = "IStdDataFormatDisp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{99FF4676-FFC3-11D0-BD02-00C04FC2FB86}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2B11E9B0-9F09-11D0-9484-00A0C91110ED}\Version	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{699DDBCC-DC7E-11D0-BCF7-00C04FC2FB86}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{99FF4677-FFC3-11D0-BD02-00C04FC2FB86}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSSTDFMT.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{99FF4677-FFC3-11D0-BD02-00C04FC2FB86}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSSTDFMT.StdDataFormats.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSSTDFMT.StdDataFormats.1\CLSID\ = "{99FF4677-FFC3-11D0-BD02-00C04FC2FB86}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{99FF4677-FFC3-11D0-BD02-00C04FC2FB86}\TypeLib\ = "{6B263850-900B-11D0-9484-00A0C91110ED}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{5DE7A180-91B1-11D0-9484-00A0C91110ED}\ = "IStdDataValueDisp"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSSTDFMT.StdDataValue\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{699DDBCC-DC7E-11D0-BCF7-00C04FC2FB86}\ = "MSStdFmt Format Property Page Object"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

regsvr32.exe

description	pid	process	target process
PID 5096 wrote to memory of 2360	5096	regsvr32.exe	regsvr32.exe
PID 5096 wrote to memory of 2360	5096	regsvr32.exe	regsvr32.exe
PID 5096 wrote to memory of 2360	5096	regsvr32.exe	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\MSSTDFMT.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:5096

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\MSSTDFMT.dll
2⤵
- Modifies registry class
PID:2360

Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

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