89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85

General

Target

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Size

3.0MB
MD5

91406e61fa3aa437c7efa66a4ea9ba0f
SHA1

27c6f6a493dd74b0d5c52437b07f1ab31e5a2e57
SHA256

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85
SHA512

5b141804e5806b87c298447c853ddcd37ac729200c91b1640eb00906224c5f0df10fd826c37bfa3cb886c82387bf4fb14e2e93762c24805a1a6bc3aaa2be97b1
SSDEEP

49152:iaUrAj9PxbJ2zuAiBCUwH7SlFJ5DumdOsCeT4n61dvdeR7hx9xek6uxzmy:ia4Aj6iBCUwHujDbC1n61S7nJ6Az

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\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\InprocServer32\ = "C:\\Program Files (x86)\\cosstminn\\KEI5_sFbPM.x64.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\InprocServer32	regsvr32.exe

Loads dropped DLL 3 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exeregsvr32.exeregsvr32.exe

pid process

560 89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
1636 regsvr32.exe
1736 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:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Extensions\clomakcdghgdplgofnhnkoihekkmcnpk\2.0\manifest.json	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File created	C:\Users\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\clomakcdghgdplgofnhnkoihekkmcnpk\2.0\manifest.json	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File created	C:\Users\Guest\AppData\Local\Google\Chrome\User Data\Default\Extensions\clomakcdghgdplgofnhnkoihekkmcnpk\2.0\manifest.json	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.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:

regsvr32.exe89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ = "cosstminn"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\NoExplorer = "1"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ = "cosstminn"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\NoExplorer = "1"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	regsvr32.exe

Drops file in System32 directory 4 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

description	ioc	process
File opened for modification	C:\Windows\System32\GroupPolicy	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File opened for modification	C:\Windows\SysWOW64\GroupPolicy\gpt.ini	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File created	C:\Windows\System32\GroupPolicy\Machine\Registry.pol	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File opened for modification	C:\Windows\System32\GroupPolicy\GPT.INI	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

Drops file in Program Files directory 8 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\cosstminn\KEI5_sFbPM.dll	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File created	C:\Program Files (x86)\cosstminn\KEI5_sFbPM.tlb	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File opened for modification	C:\Program Files (x86)\cosstminn\KEI5_sFbPM.tlb	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File created	C:\Program Files (x86)\cosstminn\KEI5_sFbPM.dat	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File opened for modification	C:\Program Files (x86)\cosstminn\KEI5_sFbPM.dat	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File created	C:\Program Files (x86)\cosstminn\KEI5_sFbPM.x64.dll	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File opened for modification	C:\Program Files (x86)\cosstminn\KEI5_sFbPM.x64.dll	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
File created	C:\Program Files (x86)\cosstminn\KEI5_sFbPM.dll	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exeregsvr32.exe

description	ioc	process
Key deleted	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key deleted	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key deleted	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	regsvr32.exe
Key deleted	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

Modifies registry class 64 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exeregsvr32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\Programmable	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\Implemented Categories	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ = "IPlaghinMein"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ = "ILocalStorage"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\ = "cosstminn"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ = "cosstminn"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ProgID	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ = "IPlaghinMein"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\Version = "1.0"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\ = "cosstminn"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\Version = "1.0"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\Version = "1.0"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\Version = "1.0"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID\ = "{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CLSID	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer\ = "cosstminn.2.0"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer\ = "cosstminn.2.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\ = "cosstminn"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\0	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\0\win32	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CLSID\ = "{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\InprocServer32\ = "C:\\Program Files (x86)\\cosstminn\\KEI5_sFbPM.dll"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\FLAGS	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID\ = "{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ = "cosstminn"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\InprocServer32\ThreadingModel = "Apartment"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\FLAGS\ = "0"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\Implemented Categories	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ = "IRegistry"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\ = "cosstminn"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ProgID\ = "cosstminn.2.0"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\ = "IEPluginLib"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\Programmable	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ = "ILocalStorage"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ProgID	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

pid	process
560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

description	pid	process
Token: SeDebugPrivilege	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Token: SeDebugPrivilege	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Token: SeDebugPrivilege	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Token: SeDebugPrivilege	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Token: SeDebugPrivilege	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Token: SeDebugPrivilege	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exeregsvr32.exe

description	pid	process	target process
PID 560 wrote to memory of 1636	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe	regsvr32.exe
PID 560 wrote to memory of 1636	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe	regsvr32.exe
PID 560 wrote to memory of 1636	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe	regsvr32.exe
PID 560 wrote to memory of 1636	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe	regsvr32.exe
PID 560 wrote to memory of 1636	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe	regsvr32.exe
PID 560 wrote to memory of 1636	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe	regsvr32.exe
PID 560 wrote to memory of 1636	560	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe	regsvr32.exe
PID 1636 wrote to memory of 1736	1636	regsvr32.exe	regsvr32.exe
PID 1636 wrote to memory of 1736	1636	regsvr32.exe	regsvr32.exe
PID 1636 wrote to memory of 1736	1636	regsvr32.exe	regsvr32.exe
PID 1636 wrote to memory of 1736	1636	regsvr32.exe	regsvr32.exe
PID 1636 wrote to memory of 1736	1636	regsvr32.exe	regsvr32.exe
PID 1636 wrote to memory of 1736	1636	regsvr32.exe	regsvr32.exe
PID 1636 wrote to memory of 1736	1636	regsvr32.exe	regsvr32.exe

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880} = "1"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

C:\Users\Admin\AppData\Local\Temp\89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
"C:\Users\Admin\AppData\Local\Temp\89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.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:560

C:\Windows\SysWOW64\regsvr32.exe
regsvr32.exe /s "C:\Program Files (x86)\cosstminn\KEI5_sFbPM.x64.dll"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1636

C:\Windows\system32\regsvr32.exe
/s "C:\Program Files (x86)\cosstminn\KEI5_sFbPM.x64.dll"
3⤵
- Registers COM server for autorun
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
PID:1736

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Browser Extensions

1

T1176

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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\cosstminn\KEI5_sFbPM.dat
Filesize
4KB

MD5
ce454201ca755e1e6438310a3c7b54e9

SHA1
c26213bd7debcc04546235934b044ee3fff03065

SHA256
7b9be20f9216d359c78666e7300e2c6078f201abc302eaa7ccbd6c667f0db8c7

SHA512
1b00d8dc510ea95c899c3c59969f455549db526a3a56c318bbfdfb437984397abc958066cb21aa6eee98b0741c2bc9427a0ff52133ab8b5e9ae153a72c7e0163

Download Submit
C:\Program Files (x86)\cosstminn\KEI5_sFbPM.tlb
Filesize
3KB

MD5
3fdfaa71c68f31e83daf46b214ff8c89

SHA1
fe4a9d2172e9a94570f46fc151b94f90db08da77

SHA256
2d4e42ee22cf2171777f6f2aa232df7a2ad3445b6988ee2f2666ec2a863aca93

SHA512
392faf168a97d35fc4fa414844cae3662d231f18d5db55891e6cf281f34cef590cb94f6a650565b5b2bdf2c0899dc872c432106449604079f3283da241f2a100

Download Submit
C:\Program Files (x86)\cosstminn\KEI5_sFbPM.x64.dll
Filesize
687KB

MD5
cd1a0489adc1f05fc31a65eb26e08c92

SHA1
95af9d7095d36dee3e4d2e2952ca1a199c2bb596

SHA256
b63804fa2e99e3bd6b8dac3e203cba731ae2317e1fdae32014a88ff40a7a4755

SHA512
52bc43818912822eb746196aea22b11287a914f156c2838e8c2bc01469758ac18f0575df3d05f7b37042e8c3fd88d5c905d69f359963d5d57c42d0bd7b073c19

Download Submit
\Program Files (x86)\cosstminn\KEI5_sFbPM.dll
Filesize
610KB

MD5
8c17652e3d7951221e9afeb07a4c71e6

SHA1
68aeb97e567f4e705d4126a60bd94ef567760b61

SHA256
4085d30c67ed3d336266d7dd5c2a1bfac8e6ba45f9240b31283e43ac9555ea24

SHA512
6f21a4058579e7babe1ee44199fc41bf282d6e0c92352c636f39160c7c9e61191f9eb4186dcba8f0a25cf51f97c181e3027f2bbcee9f723a85de159121655065

Download Submit
\Program Files (x86)\cosstminn\KEI5_sFbPM.x64.dll
Filesize
687KB

MD5
cd1a0489adc1f05fc31a65eb26e08c92

SHA1
95af9d7095d36dee3e4d2e2952ca1a199c2bb596

SHA256
b63804fa2e99e3bd6b8dac3e203cba731ae2317e1fdae32014a88ff40a7a4755

SHA512
52bc43818912822eb746196aea22b11287a914f156c2838e8c2bc01469758ac18f0575df3d05f7b37042e8c3fd88d5c905d69f359963d5d57c42d0bd7b073c19

Download Submit
\Program Files (x86)\cosstminn\KEI5_sFbPM.x64.dll
Filesize
687KB

MD5
cd1a0489adc1f05fc31a65eb26e08c92

SHA1
95af9d7095d36dee3e4d2e2952ca1a199c2bb596

SHA256
b63804fa2e99e3bd6b8dac3e203cba731ae2317e1fdae32014a88ff40a7a4755

SHA512
52bc43818912822eb746196aea22b11287a914f156c2838e8c2bc01469758ac18f0575df3d05f7b37042e8c3fd88d5c905d69f359963d5d57c42d0bd7b073c19

Download Submit
memory/560-54-0x0000000075531000-0x0000000075533000-memory.dmp

Filesize
8KB

Download
memory/560-55-0x0000000002600000-0x00000000026A0000-memory.dmp

Filesize
640KB

Download
memory/1636-82-0x0000000000000000-mapping.dmp

Download
memory/1736-86-0x0000000000000000-mapping.dmp

Download
memory/1736-87-0x000007FEFBCE1000-0x000007FEFBCE3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads