c5f143cb5604f1702219a85f9dee56574ea02125260f226a8ea24b88e227ab92

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
13/07/2024, 22:04

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General

Target

iesm_sb.dll
Size

296KB
MD5

e30a6e4de79e9e96b00abddaad54213b
SHA1

4bcd4a002ce48418d6aa5bd9f397f14ee0767809
SHA256

a825b27f233259209a7850fa3c14deaf11401df31475002e667bec0cc84c57c2
SHA512

0968f308223007e0dfff0cc5f47cdc19ea424efc129edea8fd9c39acff925a7059d21b84212d22fc2c682ef36cf49a14d949deb8ed7ce18372759eb233daa269
SSDEEP

3072:TTFPZBLNo8mUDSwWZGJScKmwbzRwTvaMewbPOPLKWKFW0o56xXJ:TpnLNa96ScKmwbzRwTv7eJPufW0

Score

1^/10

Malware Config

Signatures

Modifies registry class 45 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{D47F5A34-739D-422A-9FFE-4F668D41FB20}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\ = "IEMon3.Mon"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\VERSION\ = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\TypeLib\ = "{D47F5A34-739D-422A-9FFE-4F668D41FB20}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\ProgID\ = "IEMon3.Mon"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\VERSION	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEMon3.Mon\Clsid\ = "{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\ProxyStubClsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\ = "_Mon"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEMon3.Mon\ = "IEMon3.Mon"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\ = "Mon"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{D47F5A34-739D-422A-9FFE-4F668D41FB20}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\ = "_Mon"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{D47F5A34-739D-422A-9FFE-4F668D41FB20}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{D47F5A34-739D-422A-9FFE-4F668D41FB20}\1.0\ = "IEMon3"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{D47F5A34-739D-422A-9FFE-4F668D41FB20}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{D47F5A34-739D-422A-9FFE-4F668D41FB20}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\TypeLib\ = "{D47F5A34-739D-422A-9FFE-4F668D41FB20}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{D47F5A34-739D-422A-9FFE-4F668D41FB20}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{D47F5A34-739D-422A-9FFE-4F668D41FB20}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{D47F5A34-739D-422A-9FFE-4F668D41FB20}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TYPELIB\{D47F5A34-739D-422A-9FFE-4F668D41FB20}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\iesm_sb.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\Implemented Categories	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\TypeLib\ = "{D47F5A34-739D-422A-9FFE-4F668D41FB20}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\iesm_sb.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEMon3.Mon\Clsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\ProxyStubClsid\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\Implemented Categories\{40FC6ED5-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{24C3EFDF-DF28-46BF-B2DD-B95E33473C05}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{054C58BF-91E3-4FDA-BE95-3E78CEC7A8C9}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEMon3.Mon	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 1720	2076	regsvr32.exe	30
PID 2076 wrote to memory of 1720	2076	regsvr32.exe	30
PID 2076 wrote to memory of 1720	2076	regsvr32.exe	30
PID 2076 wrote to memory of 1720	2076	regsvr32.exe	30
PID 2076 wrote to memory of 1720	2076	regsvr32.exe	30
PID 2076 wrote to memory of 1720	2076	regsvr32.exe	30
PID 2076 wrote to memory of 1720	2076	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\iesm_sb.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\iesm_sb.dll
  2⤵
  - Modifies registry class
  PID:1720

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Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

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