866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919

General

Target

866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Size

3.0MB
MD5

e1fa83f71697f2d2bc0179260e52a47f
SHA1

177e8a80de6b6e6f666956624f2663c6c45e0e2c
SHA256

866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919
SHA512

8d4a18f8fdb70937b88b9bb13521650fd0ec4f8a7ba7e605f5e6338510321ee00f6cc3a2a5c09363d9670521d535867f925249bbbbefb7df779fcf20327e2b92
SSDEEP

49152:9a+rpFCFSaMUnkl+Px8Av5jt+L83m6veJ2ujTEhAWSHZfynkmt:9aCpFCnkl+pr5jt+La28unEi1Ok

Score

8^/10

adware discovery persistence spyware stealer

Malware Config

Signatures

Registers COM server for autorun 1 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Processes:

regsvr32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\InprocServer32\ = "C:\\Program Files (x86)\\cosstminn\\YWO.x64.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\InprocServer32	regsvr32.exe

Loads dropped DLL 3 IoCs

Processes:

866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exeregsvr32.exeregsvr32.exe

pid process

980 866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
1940 regsvr32.exe
1240 regsvr32.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops Chrome extension 3 IoCs

Processes:

866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Extensions\cgfencijfhkeamjkcanjdndjkiibojhd\2.0\manifest.json	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File created	C:\Users\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\cgfencijfhkeamjkcanjdndjkiibojhd\2.0\manifest.json	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File created	C:\Users\Guest\AppData\Local\Google\Chrome\User Data\Default\Extensions\cgfencijfhkeamjkcanjdndjkiibojhd\2.0\manifest.json	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

Installs/modifies Browser Helper Object 2 TTPs 8 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

Processes:

866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exeregsvr32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\ = "cosstminn"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\NoExplorer = "1"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\ = "cosstminn"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\NoExplorer = "1"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

Drops file in System32 directory 4 IoCs

Processes:

866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

description	ioc	process
File opened for modification	C:\Windows\System32\GroupPolicy	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File opened for modification	C:\Windows\SysWOW64\GroupPolicy\gpt.ini	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File created	C:\Windows\System32\GroupPolicy\Machine\Registry.pol	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File opened for modification	C:\Windows\System32\GroupPolicy\GPT.INI	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

Drops file in Program Files directory 8 IoCs

Processes:

866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

description	ioc	process
File created	C:\Program Files (x86)\cosstminn\YWO.x64.dll	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File opened for modification	C:\Program Files (x86)\cosstminn\YWO.x64.dll	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File created	C:\Program Files (x86)\cosstminn\YWO.dll	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File opened for modification	C:\Program Files (x86)\cosstminn\YWO.dll	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File created	C:\Program Files (x86)\cosstminn\YWO.tlb	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File opened for modification	C:\Program Files (x86)\cosstminn\YWO.tlb	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File created	C:\Program Files (x86)\cosstminn\YWO.dat	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
File opened for modification	C:\Program Files (x86)\cosstminn\YWO.dat	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

Processes:

regsvr32.exe866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	regsvr32.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe

Modifies registry class 64 IoCs

Processes:

regsvr32.exe866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\ProgID\ = "cosstminn.2.0"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ = "IPlaghinMein"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\Version = "1.0"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ = "ILocalStorage"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\InprocServer32	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\ProgID	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\Version = "1.0"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\ = "cosstminn"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\ProgID\ = "cosstminn.2.0"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\InprocServer32	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\0	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\HELPDIR	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\ = "cosstminn"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID\ = "{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer\ = "cosstminn.2.0"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ = "IRegistry"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\VersionIndependentProgID	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\Implemented Categories	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\VersionIndependentProgID\ = "cosstminn"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\InprocServer32\ = "C:\\Program Files (x86)\\cosstminn\\YWO.x64.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\ = "cosstminn"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID\ = "{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\Version = "1.0"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\VersionIndependentProgID	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\Implemented Categories	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\0\win32\ = "C:\\Program Files (x86)\\cosstminn\\YWO.tlb"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\InprocServer32\ = "C:\\Program Files (x86)\\cosstminn\\YWO.dll"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\ProgID	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\Programmable	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer\ = "cosstminn.2.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\ = "cosstminn"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043}\InprocServer32\ThreadingModel = "Apartment"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

pid	process
980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

description	pid	process
Token: SeDebugPrivilege	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Token: SeDebugPrivilege	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Token: SeDebugPrivilege	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Token: SeDebugPrivilege	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Token: SeDebugPrivilege	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Token: SeDebugPrivilege	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exeregsvr32.exe

description	pid	process	target process
PID 980 wrote to memory of 1940	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe	regsvr32.exe
PID 980 wrote to memory of 1940	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe	regsvr32.exe
PID 980 wrote to memory of 1940	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe	regsvr32.exe
PID 980 wrote to memory of 1940	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe	regsvr32.exe
PID 980 wrote to memory of 1940	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe	regsvr32.exe
PID 980 wrote to memory of 1940	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe	regsvr32.exe
PID 980 wrote to memory of 1940	980	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe	regsvr32.exe
PID 1940 wrote to memory of 1240	1940	regsvr32.exe	regsvr32.exe
PID 1940 wrote to memory of 1240	1940	regsvr32.exe	regsvr32.exe
PID 1940 wrote to memory of 1240	1940	regsvr32.exe	regsvr32.exe
PID 1940 wrote to memory of 1240	1940	regsvr32.exe	regsvr32.exe
PID 1940 wrote to memory of 1240	1940	regsvr32.exe	regsvr32.exe
PID 1940 wrote to memory of 1240	1940	regsvr32.exe	regsvr32.exe
PID 1940 wrote to memory of 1240	1940	regsvr32.exe	regsvr32.exe

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

Processes:

866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID\{C55FCADF-468B-1C8D-3BCF-AF53E06F2043} = "1"	866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe

C:\Users\Admin\AppData\Local\Temp\866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe
"C:\Users\Admin\AppData\Local\Temp\866b83a2d4dc367718836d3f657503b381fa99a755aa533e3d95c79ac6643919.exe"
1⤵
- Loads dropped DLL
- Drops Chrome extension
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:980

C:\Windows\SysWOW64\regsvr32.exe
regsvr32.exe /s "C:\Program Files (x86)\cosstminn\YWO.x64.dll"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1940

C:\Windows\system32\regsvr32.exe
/s "C:\Program Files (x86)\cosstminn\YWO.x64.dll"
3⤵
- Registers COM server for autorun
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
PID:1240

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Browser Extensions

1

T1176

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files (x86)\cosstminn\YWO.dat

Filesize
4KB

MD5
400099cea6802324f899a2c1182e4b5b

SHA1
b267f53c535a6c02341d425a0e8813aebd10b201

SHA256
cd204f58b118f980aaadc4f68608dd1b288ea20ecddfc0784bf31b5b0c360201

SHA512
a3f5b39956dfe4ab6bd74aca8d02a089ace5185500e2b6d6e77e935ac1f1a824c58ec8e35e074f99cf23704df632ee208558ad08981c97c64e0337845470bb13

Download Submit
C:\Program Files (x86)\cosstminn\YWO.tlb

Filesize
3KB

MD5
3fdfaa71c68f31e83daf46b214ff8c89

SHA1
fe4a9d2172e9a94570f46fc151b94f90db08da77

SHA256
2d4e42ee22cf2171777f6f2aa232df7a2ad3445b6988ee2f2666ec2a863aca93

SHA512
392faf168a97d35fc4fa414844cae3662d231f18d5db55891e6cf281f34cef590cb94f6a650565b5b2bdf2c0899dc872c432106449604079f3283da241f2a100

Download Submit
C:\Program Files (x86)\cosstminn\YWO.x64.dll

Filesize
687KB

MD5
cd1a0489adc1f05fc31a65eb26e08c92

SHA1
95af9d7095d36dee3e4d2e2952ca1a199c2bb596

SHA256
b63804fa2e99e3bd6b8dac3e203cba731ae2317e1fdae32014a88ff40a7a4755

SHA512
52bc43818912822eb746196aea22b11287a914f156c2838e8c2bc01469758ac18f0575df3d05f7b37042e8c3fd88d5c905d69f359963d5d57c42d0bd7b073c19

Download Submit
\Program Files (x86)\cosstminn\YWO.dll

Filesize
610KB

MD5
8c17652e3d7951221e9afeb07a4c71e6

SHA1
68aeb97e567f4e705d4126a60bd94ef567760b61

SHA256
4085d30c67ed3d336266d7dd5c2a1bfac8e6ba45f9240b31283e43ac9555ea24

SHA512
6f21a4058579e7babe1ee44199fc41bf282d6e0c92352c636f39160c7c9e61191f9eb4186dcba8f0a25cf51f97c181e3027f2bbcee9f723a85de159121655065

Download Submit
\Program Files (x86)\cosstminn\YWO.x64.dll

Filesize
687KB

MD5
cd1a0489adc1f05fc31a65eb26e08c92

SHA1
95af9d7095d36dee3e4d2e2952ca1a199c2bb596

SHA256
b63804fa2e99e3bd6b8dac3e203cba731ae2317e1fdae32014a88ff40a7a4755

SHA512
52bc43818912822eb746196aea22b11287a914f156c2838e8c2bc01469758ac18f0575df3d05f7b37042e8c3fd88d5c905d69f359963d5d57c42d0bd7b073c19

Download Submit
\Program Files (x86)\cosstminn\YWO.x64.dll

Filesize
687KB

MD5
cd1a0489adc1f05fc31a65eb26e08c92

SHA1
95af9d7095d36dee3e4d2e2952ca1a199c2bb596

SHA256
b63804fa2e99e3bd6b8dac3e203cba731ae2317e1fdae32014a88ff40a7a4755

SHA512
52bc43818912822eb746196aea22b11287a914f156c2838e8c2bc01469758ac18f0575df3d05f7b37042e8c3fd88d5c905d69f359963d5d57c42d0bd7b073c19

Download Submit
memory/980-70-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-73-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-66-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-67-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-68-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-69-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-54-0x0000000075811000-0x0000000075813000-memory.dmp

Filesize
8KB

Download
memory/980-71-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-72-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-65-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-74-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-64-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-55-0x0000000002670000-0x0000000002710000-memory.dmp

Filesize
640KB

Download
memory/980-60-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-61-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-62-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/980-63-0x0000000000802000-0x0000000000806000-memory.dmp

Filesize
16KB

Download
memory/1240-81-0x000007FEFB931000-0x000007FEFB933000-memory.dmp

Filesize
8KB

Download
memory/1240-80-0x0000000000000000-mapping.dmp

Download
memory/1940-76-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads