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

4972 89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
236 regsvr32.exe
220 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 5 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

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

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exeregsvr32.exe

description	ioc	process
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
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

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 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
File opened for modification	C:\Program Files (x86)\cosstminn\KEI5_sFbPM.dll	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

Processes:

regsvr32.exe89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key deleted	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\MICROSOFT\INTERNET EXPLORER\APPROVEDEXTENSIONSMIGRATION\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key deleted	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key deleted	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\MICROSOFT\INTERNET EXPLORER\APPROVEDEXTENSIONSMIGRATION\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	regsvr32.exe
Key deleted	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe

Modifies registry class 64 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exeregsvr32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\Version = "1.0"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\VersionIndependentProgID	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\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\Version = "1.0"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\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}\InprocServer32	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\HELPDIR\ = "C:\\Program Files (x86)\\cosstminn"	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\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ = "ILocalStorage"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\ = "cosstminn"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\FLAGS	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ProgID	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ProgID	regsvr32.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\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	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\cosstminn.cosstminn.2.0\CLSID\ = "{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\InprocServer32	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ProgID	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ = "IPlaghinMein"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.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}\TypeLib\Version = "1.0"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\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
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\ = "cosstminn"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer\ = "cosstminn.2.0"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ = "cosstminn"	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}\VersionIndependentProgID	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\ = "cosstminn"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\VersionIndependentProgID\ = "cosstminn"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\InprocServer32\ThreadingModel = "Apartment"	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\cosstminn.cosstminn.2.0	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.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\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}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer\ = "cosstminn.2.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\Implemented Categories	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D3303E0F-8E5B-C4F8-D7D7-0A403DD41880}\InprocServer32	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\WOW6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\0\win32	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

pid	process
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

description	pid	process
Token: SeDebugPrivilege	4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Token: SeDebugPrivilege	4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Token: SeDebugPrivilege	4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Token: SeDebugPrivilege	4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Token: SeDebugPrivilege	4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe
Token: SeDebugPrivilege	4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exeregsvr32.exe

description	pid	process	target process
PID 4972 wrote to memory of 236	4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe	regsvr32.exe
PID 4972 wrote to memory of 236	4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe	regsvr32.exe
PID 4972 wrote to memory of 236	4972	89accdfe65e18999d57cf5a1eae7e2fe280f8d817ea6bf7b4d30c0ca20d71e85.exe	regsvr32.exe
PID 236 wrote to memory of 220	236	regsvr32.exe	regsvr32.exe
PID 236 wrote to memory of 220	236	regsvr32.exe	regsvr32.exe

System policy modification 1 TTPs 1 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

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:4972

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:236

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:220

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
1⤵
PID:3832

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
1⤵
PID:3572

Network

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.dll
Filesize
610KB

MD5
8c17652e3d7951221e9afeb07a4c71e6

SHA1
68aeb97e567f4e705d4126a60bd94ef567760b61

SHA256
4085d30c67ed3d336266d7dd5c2a1bfac8e6ba45f9240b31283e43ac9555ea24

SHA512
6f21a4058579e7babe1ee44199fc41bf282d6e0c92352c636f39160c7c9e61191f9eb4186dcba8f0a25cf51f97c181e3027f2bbcee9f723a85de159121655065

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

MD5
cd1a0489adc1f05fc31a65eb26e08c92

SHA1
95af9d7095d36dee3e4d2e2952ca1a199c2bb596

SHA256
b63804fa2e99e3bd6b8dac3e203cba731ae2317e1fdae32014a88ff40a7a4755

SHA512
52bc43818912822eb746196aea22b11287a914f156c2838e8c2bc01469758ac18f0575df3d05f7b37042e8c3fd88d5c905d69f359963d5d57c42d0bd7b073c19

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

MD5
cd1a0489adc1f05fc31a65eb26e08c92

SHA1
95af9d7095d36dee3e4d2e2952ca1a199c2bb596

SHA256
b63804fa2e99e3bd6b8dac3e203cba731ae2317e1fdae32014a88ff40a7a4755

SHA512
52bc43818912822eb746196aea22b11287a914f156c2838e8c2bc01469758ac18f0575df3d05f7b37042e8c3fd88d5c905d69f359963d5d57c42d0bd7b073c19

Download Submit
memory/220-143-0x0000000000000000-mapping.dmp

Download
memory/236-140-0x0000000000000000-mapping.dmp

Download
memory/4972-132-0x0000000002DE0000-0x0000000002E80000-memory.dmp

Filesize
640KB

Download
memory/4972-137-0x0000000000C10000-0x0000000000C13000-memory.dmp

Filesize
12KB

Download
memory/4972-138-0x0000000000C10000-0x0000000000C13000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads