1dd5bf67d2f7e0fc2e95baf84a8bda494668ff304fc6bb910b1c0d58d5a85bee

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/06/2024, 02:31

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General

Target
ComDlls/ThunderAgent.dll
Size 104KB
Sample240610-czzmksbd97
SHA256 05a04a7d8057c1f9d1fc250b5bfa67258a3ed3475d7cb5898ac01238334abb76
MD5 b6ac7d7f342f81f827cf7f07eb6c0d16
SHA1 8305c41c1eae7d728cfdaa1f49ede5fef77261e6
SHA512 8642a874f17d0534a895338ce0b18fbfb4519206d339ce9292eb3186de6ceccf52f907ece356dcec3588cc52cefad4c66104f53a47c8f5ab93c17e8516d777d8
SSDEEP 1536:XiUB4olTayQYliO8WFvQxVlT9Eds0uSB5Tp2CchDlGV8joTYyQXV:Xib6bQYNvQx+oSXTpnkDlGV8nyQF
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1856	regsvr32.exe

Modifies registry class 44 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\Version	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{26D657AE-A466-4F44-AB1D-5CFFFADBED97}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1622F56A-0C55-464C-B472-377845DEF21D}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1622F56A-0C55-464C-B472-377845DEF21D}\ = "IAgent"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAgent.Agent.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAgent.Agent.1\CLSID\ = "{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAgent.Agent\CurVer\ = "ThunderAgent.Agent.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\ = "Thunder Agent Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1622F56A-0C55-464C-B472-377845DEF21D}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{26D657AE-A466-4F44-AB1D-5CFFFADBED97}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{26D657AE-A466-4F44-AB1D-5CFFFADBED97}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ComDlls\\ThunderAgent_Now.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1622F56A-0C55-464C-B472-377845DEF21D}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1622F56A-0C55-464C-B472-377845DEF21D}\ProxyStubClsid\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAgent.Agent	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAgent.Agent\ = "Thunder Agent Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAgent.Agent\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\ProgID\ = "ThunderAgent.Agent.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ComDlls\\ThunderAgent_Now.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\Version\ = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAgent.Agent\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\VersionIndependentProgID\ = "ThunderAgent.Agent"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\Control	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\TypeLib\ = "{26D657AE-A466-4F44-AB1D-5CFFFADBED97}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1622F56A-0C55-464C-B472-377845DEF21D}\ProxyStubClsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAgent.Agent.1\ = "Thunder Agent Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{26D657AE-A466-4F44-AB1D-5CFFFADBED97}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{26D657AE-A466-4F44-AB1D-5CFFFADBED97}\1.0\ = "ThunderAgent 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{26D657AE-A466-4F44-AB1D-5CFFFADBED97}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{26D657AE-A466-4F44-AB1D-5CFFFADBED97}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ComDlls\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1622F56A-0C55-464C-B472-377845DEF21D}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAgent.Agent.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{26D657AE-A466-4F44-AB1D-5CFFFADBED97}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ThunderAgent.Agent\CLSID\ = "{485463B7-8FB2-4B3B-B29B-8B919B0EACCE}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{26D657AE-A466-4F44-AB1D-5CFFFADBED97}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{26D657AE-A466-4F44-AB1D-5CFFFADBED97}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1622F56A-0C55-464C-B472-377845DEF21D}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{1622F56A-0C55-464C-B472-377845DEF21D}\TypeLib\ = "{26D657AE-A466-4F44-AB1D-5CFFFADBED97}"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1040 wrote to memory of 1856	1040	regsvr32.exe	28
PID 1040 wrote to memory of 1856	1040	regsvr32.exe	28
PID 1040 wrote to memory of 1856	1040	regsvr32.exe	28
PID 1040 wrote to memory of 1856	1040	regsvr32.exe	28
PID 1040 wrote to memory of 1856	1040	regsvr32.exe	28
PID 1040 wrote to memory of 1856	1040	regsvr32.exe	28
PID 1040 wrote to memory of 1856	1040	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ComDlls\ThunderAgent.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1040
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\ComDlls\ThunderAgent.dll
  2⤵
  - Loads dropped DLL
  - Modifies registry class
  PID:1856

Network

MITRE ATT&CK Matrix

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Downloads

ThunderAgent_Now.dll

Path \Users\Admin\AppData\Local\Temp\ComDlls\ThunderAgent_Now.dll
Size 104KB
SHA256 05a04a7d8057c1f9d1fc250b5bfa67258a3ed3475d7cb5898ac01238334abb76
MD5 b6ac7d7f342f81f827cf7f07eb6c0d16
SHA1 8305c41c1eae7d728cfdaa1f49ede5fef77261e6
SHA512 8642a874f17d0534a895338ce0b18fbfb4519206d339ce9292eb3186de6ceccf52f907ece356dcec3588cc52cefad4c66104f53a47c8f5ab93c17e8516d777d8
SSDEEP 1536:XiUB4olTayQYliO8WFvQxVlT9Eds0uSB5Tp2CchDlGV8joTYyQXV:Xib6bQYNvQx+oSXTpnkDlGV8nyQF
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1856-2-0x00000000001D0000-0x00000000001EB000-memory.dmp

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