d3e26c7296830666e8d5758afc850c5b596ceb3e2c1ebbb01d5dc22ff58ff5fa

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
28/02/2024, 18:47

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General

Target
DreamMail4/Sys/OfficeAddIn.dll
Size 192KB
Sample240228-xfbfvsbc98
SHA256 0dd815e6ebcd5442a394d0df8f880e008018a7f037fe188479eddc687bd6961d
MD5 74004396991f5f064f68d3944fd76d5b
SHA1 7be2cd41c37126ccf1d41a6186cf92026335dc52
SHA512 6dc96ffe3eb00b49370a3cc9c243da8bc581a13a3a24ca0b43eb6e43e848e7d066ccd2aa2ed285c0a8fec7d88de6d9bfaef8df6799f36179ac002e0bfce44666
SSDEEP 3072:Unn5uCm5e5yQ0lZ++OWVpMYfbBJLdQmrX+f8mTTCCguRHDqOHOeB2w3Uj:Uzm04cPA+YfbLpQcX68mTWTuRH1HOAXg
MD5 SHA1 SHA512 SSDEEP

Score

1^/10

Malware Config

Signatures

Modifies registry class 40 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5FD801A6-885E-4384-940C-201C17E7C460}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\DreamMail4\\Sys\\OfficeAddIn.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}\ = "DreamMailExcelAddin"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}\ProgID\ = "DMOfficeAddin.DreamMailExcelAddin"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}\Version	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}\Version\ = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B8271F9E-8701-478B-ACC2-EE042F1E7C46}\ = "DreamMailWordAddin"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B8271F9E-8701-478B-ACC2-EE042F1E7C46}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5FD801A6-885E-4384-940C-201C17E7C460}\1.0\ = "DMWordAi Library"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5FD801A6-885E-4384-940C-201C17E7C460}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\DMOfficeAddin.DreamMailExcelAddin	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B8271F9E-8701-478B-ACC2-EE042F1E7C46}\Version\ = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5FD801A6-885E-4384-940C-201C17E7C460}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\DreamMail4\\Sys\\OfficeAddIn.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\DMOfficeAddin.DreamMailExcelAddin\ = "DreamMailExcelAddin"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B8271F9E-8701-478B-ACC2-EE042F1E7C46}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B8271F9E-8701-478B-ACC2-EE042F1E7C46}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\DreamMail4\\Sys\\OfficeAddIn.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B8271F9E-8701-478B-ACC2-EE042F1E7C46}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B8271F9E-8701-478B-ACC2-EE042F1E7C46}\ProgID\ = "DMOfficeAddin.DreamMailWordAddin"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5FD801A6-885E-4384-940C-201C17E7C460}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5FD801A6-885E-4384-940C-201C17E7C460}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\DMOfficeAddin.DreamMailExcelAddin\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}\TypeLib\ = "{5FD801A6-885E-4384-940C-201C17E7C460}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\DMOfficeAddin.DreamMailWordAddin\Clsid\ = "{B8271F9E-8701-478B-ACC2-EE042F1E7C46}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B8271F9E-8701-478B-ACC2-EE042F1E7C46}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5FD801A6-885E-4384-940C-201C17E7C460}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5FD801A6-885E-4384-940C-201C17E7C460}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\DreamMail4\\Sys\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\DMOfficeAddin.DreamMailExcelAddin\Clsid\ = "{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B8271F9E-8701-478B-ACC2-EE042F1E7C46}\TypeLib\ = "{5FD801A6-885E-4384-940C-201C17E7C460}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5FD801A6-885E-4384-940C-201C17E7C460}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B8271F9E-8701-478B-ACC2-EE042F1E7C46}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\DMOfficeAddin.DreamMailWordAddin	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\DMOfficeAddin.DreamMailWordAddin\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5FD801A6-885E-4384-940C-201C17E7C460}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6F7296AD-7C88-4FE3-AE8A-C1A6FCBB7195}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\DMOfficeAddin.DreamMailWordAddin\ = "DreamMailWordAddin"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B8271F9E-8701-478B-ACC2-EE042F1E7C46}\Version	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 3032	3020	regsvr32.exe	28
PID 3020 wrote to memory of 3032	3020	regsvr32.exe	28
PID 3020 wrote to memory of 3032	3020	regsvr32.exe	28
PID 3020 wrote to memory of 3032	3020	regsvr32.exe	28
PID 3020 wrote to memory of 3032	3020	regsvr32.exe	28
PID 3020 wrote to memory of 3032	3020	regsvr32.exe	28
PID 3020 wrote to memory of 3032	3020	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\DreamMail4\Sys\OfficeAddIn.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\DreamMail4\Sys\OfficeAddIn.dll
  2⤵
  - Modifies registry class
  PID:3032

Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

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