cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a

General

Target

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Size

2.8MB
MD5

db46e582064f971695def55152f82206
SHA1

cec8c4b2f685f75e1b4de0af785911c36875517a
SHA256

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a
SHA512

39ce713b1488abafa9eee62f88846fb00f6673c6cfccd403ae824a5b069d6507b612fbe3438e17d7198b9f9d3583d491dbb0598c50ef86d956e0e4a185693006
SSDEEP

49152:O9rT/PCAOgOr4K3o9hRTt/wc9rI4GrOh4oPMLchvlHqJ/cSbiRMav40BN7pp6c1O:iT/XOgsdMsc9rIDih4oUGvh7S+iO4c6H

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\{F41A6A8A-1997-9F16-1255-B19298FE6950}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\InprocServer32\ = "C:\\Program Files (x86)\\cosstminn\\1o.x64.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\InprocServer32	regsvr32.exe

Loads dropped DLL 3 IoCs

Processes:

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exeregsvr32.exeregsvr32.exe

pid process

2736 cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
3472 regsvr32.exe
1304 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:

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Extensions\hcboefmbbmchbplcmnifkoeochifnmgo\2.0\manifest.json	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File created	C:\Users\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\hcboefmbbmchbplcmnifkoeochifnmgo\2.0\manifest.json	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File created	C:\Users\DefaultAccount\AppData\Local\Google\Chrome\User Data\Default\Extensions\hcboefmbbmchbplcmnifkoeochifnmgo\2.0\manifest.json	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File created	C:\Users\Guest\AppData\Local\Google\Chrome\User Data\Default\Extensions\hcboefmbbmchbplcmnifkoeochifnmgo\2.0\manifest.json	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File created	C:\Users\WDAGUtilityAccount\AppData\Local\Google\Chrome\User Data\Default\Extensions\hcboefmbbmchbplcmnifkoeochifnmgo\2.0\manifest.json	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.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:

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exeregsvr32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F41A6A8A-1997-9F16-1255-B19298FE6950}\ = "cosstminn"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F41A6A8A-1997-9F16-1255-B19298FE6950}\NoExplorer = "1"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F41A6A8A-1997-9F16-1255-B19298FE6950}	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F41A6A8A-1997-9F16-1255-B19298FE6950}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F41A6A8A-1997-9F16-1255-B19298FE6950}\ = "cosstminn"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F41A6A8A-1997-9F16-1255-B19298FE6950}\NoExplorer = "1"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F41A6A8A-1997-9F16-1255-B19298FE6950}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F41A6A8A-1997-9F16-1255-B19298FE6950}	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

Drops file in System32 directory 4 IoCs

Processes:

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

description	ioc	process
File opened for modification	C:\Windows\System32\GroupPolicy	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File opened for modification	C:\Windows\SysWOW64\GroupPolicy\gpt.ini	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File created	C:\Windows\System32\GroupPolicy\Machine\Registry.pol	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File opened for modification	C:\Windows\System32\GroupPolicy\GPT.INI	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

Drops file in Program Files directory 8 IoCs

Processes:

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

description	ioc	process
File created	C:\Program Files (x86)\cosstminn\1o.dat	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File opened for modification	C:\Program Files (x86)\cosstminn\1o.dat	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File created	C:\Program Files (x86)\cosstminn\1o.x64.dll	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File opened for modification	C:\Program Files (x86)\cosstminn\1o.x64.dll	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File created	C:\Program Files (x86)\cosstminn\1o.dll	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File opened for modification	C:\Program Files (x86)\cosstminn\1o.dll	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File created	C:\Program Files (x86)\cosstminn\1o.tlb	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
File opened for modification	C:\Program Files (x86)\cosstminn\1o.tlb	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

Processes:

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exeregsvr32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{F41A6A8A-1997-9F16-1255-B19298FE6950}	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key deleted	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\MICROSOFT\INTERNET EXPLORER\APPROVEDEXTENSIONSMIGRATION\{F41A6A8A-1997-9F16-1255-B19298FE6950}	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key deleted	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key deleted	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\MICROSOFT\INTERNET EXPLORER\APPROVEDEXTENSIONSMIGRATION\{F41A6A8A-1997-9F16-1255-B19298FE6950}	regsvr32.exe
Key deleted	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{F41A6A8A-1997-9F16-1255-B19298FE6950}	regsvr32.exe

Modifies registry class 64 IoCs

Processes:

regsvr32.execb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\ = "cosstminn"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ = "IPlaghinMein"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ = "ILocalStorage"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\ = "cosstminn"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CLSID\ = "{F41A6A8A-1997-9F16-1255-B19298FE6950}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\ = "cosstminn"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CLSID	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\ProgID	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\Version = "1.0"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ = "IRegistry"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\Version = "1.0"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\InprocServer32\ = "C:\\Program Files (x86)\\cosstminn\\1o.x64.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\HELPDIR	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\HELPDIR\ = "C:\\Program Files (x86)\\cosstminn"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID\ = "{F41A6A8A-1997-9F16-1255-B19298FE6950}"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\Programmable	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\Implemented Categories	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer\ = "cosstminn.2.0"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\InprocServer32	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640}	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\ = "IEPluginLib"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ = "IRegistry"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\InprocServer32	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\ProgID	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\Programmable	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\VersionIndependentProgID	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\0\win32\ = "C:\\Program Files (x86)\\cosstminn\\1o.tlb"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\VersionIndependentProgID	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\Programmable	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\Version = "1.0"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\Version = "1.0"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CLSID\ = "{F41A6A8A-1997-9F16-1255-B19298FE6950}"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\ProgID\ = "cosstminn.2.0"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\InprocServer32\ThreadingModel = "Apartment"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\0	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950}\Implemented Categories	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\FLAGS	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

pid	process
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

description	pid	process
Token: SeDebugPrivilege	2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Token: SeDebugPrivilege	2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Token: SeDebugPrivilege	2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Token: SeDebugPrivilege	2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Token: SeDebugPrivilege	2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
Token: SeDebugPrivilege	2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exeregsvr32.exe

description	pid	process	target process
PID 2736 wrote to memory of 3472	2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe	regsvr32.exe
PID 2736 wrote to memory of 3472	2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe	regsvr32.exe
PID 2736 wrote to memory of 3472	2736	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe	regsvr32.exe
PID 3472 wrote to memory of 1304	3472	regsvr32.exe	regsvr32.exe
PID 3472 wrote to memory of 1304	3472	regsvr32.exe	regsvr32.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID\{F41A6A8A-1997-9F16-1255-B19298FE6950} = "1"	cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe

C:\Users\Admin\AppData\Local\Temp\cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.exe
"C:\Users\Admin\AppData\Local\Temp\cb1d854e84dadc82088b2c7beb542e02b68ebfe236fd36481fb7bc1d2156d96a.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:2736

C:\Windows\SysWOW64\regsvr32.exe
regsvr32.exe /s "C:\Program Files (x86)\cosstminn\1o.x64.dll"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3472

C:\Windows\system32\regsvr32.exe
/s "C:\Program Files (x86)\cosstminn\1o.x64.dll"
3⤵
- Registers COM server for autorun
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
PID:1304

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
1⤵
PID:4832

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
1⤵
PID:1320

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\1o.dat

Filesize
4KB

MD5
162e4f0c652265528218b7866cebc4a0

SHA1
d7cd167084a64c05853dc4b0cf47d35b71553702

SHA256
b6d507699713fbe3f19c93efee8c2a649155a4e13a2c246403fc510c64eeba67

SHA512
a065804386e08acded68ecd175facbdbdb58a51be8b057725bff703aafa352a4169bd29ca10ffa2d08dc66b9c8bcb985b29f8cd0f7fbbb59b7fac58f60358a0b

Download Submit
C:\Program Files (x86)\cosstminn\1o.dll

Filesize
605KB

MD5
a0d4eedcfefa3236995e8be50ded506c

SHA1
02e37daee41de8cbecd4021374536d838ca6f9fa

SHA256
485ba6f566fd2284ae6e9e38c87fb244dcc5ce118bd75d1d6191c3586f925e56

SHA512
00e804232ef5517c77396b70bcaaa4810e7a892753b0f153ffa1e76d6b4a6d6aebc31fa90d34c46ad41dd96208e7cb260c547e679bdab35b1e896b17d29ec5b3

Download Submit
C:\Program Files (x86)\cosstminn\1o.tlb

Filesize
3KB

MD5
ee5a227830ec3db5afb6d542084d285f

SHA1
c78b0b9eb845a0a52b517c156ee3caafc9a1ad5c

SHA256
7e3e1d23c30946ec66d8bcf59e330ee9e38fac7416c0c6eb3eaafd0d8ef282a1

SHA512
50f62ec0e3704aa745e9bf449e215ba8a48321944a1023f9ed71e2f92faf8ea24d9c8cc5738385c1c2cd05fa988ebd183a0a9162772cc77791913aa485053927

Download Submit
C:\Program Files (x86)\cosstminn\1o.x64.dll

Filesize
685KB

MD5
174c7bd231f467a6cb6f15483b0e869c

SHA1
c633e908c513917f29491e59b34a0d5201cc4818

SHA256
0f7da568dce022e68239f1cb8688a669982765a180af56a5c2785cd455d03abc

SHA512
cbd1fc903e006f8fd7f1fb6f6eeac4c5e94d028855c8b3c1f453ad8958c4c959572cdaf60ea641787ec979d14794bff567e9f6983d991612acfea8508e81a93b

Download Submit
C:\Program Files (x86)\cosstminn\1o.x64.dll

Filesize
685KB

MD5
174c7bd231f467a6cb6f15483b0e869c

SHA1
c633e908c513917f29491e59b34a0d5201cc4818

SHA256
0f7da568dce022e68239f1cb8688a669982765a180af56a5c2785cd455d03abc

SHA512
cbd1fc903e006f8fd7f1fb6f6eeac4c5e94d028855c8b3c1f453ad8958c4c959572cdaf60ea641787ec979d14794bff567e9f6983d991612acfea8508e81a93b

Download Submit
C:\Program Files (x86)\cosstminn\1o.x64.dll

Filesize
685KB

MD5
174c7bd231f467a6cb6f15483b0e869c

SHA1
c633e908c513917f29491e59b34a0d5201cc4818

SHA256
0f7da568dce022e68239f1cb8688a669982765a180af56a5c2785cd455d03abc

SHA512
cbd1fc903e006f8fd7f1fb6f6eeac4c5e94d028855c8b3c1f453ad8958c4c959572cdaf60ea641787ec979d14794bff567e9f6983d991612acfea8508e81a93b

Download Submit
memory/1304-141-0x0000000000000000-mapping.dmp

Download
memory/2736-132-0x0000000000BC0000-0x0000000000C68000-memory.dmp

Filesize
672KB

Download
memory/3472-138-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads