e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839

General

Target

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Size

3.0MB
MD5

298d9f4141bbf96a65181018e438c0d2
SHA1

3589a1c0fe75043adddc6f6b914fa5dc5d118957
SHA256

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839
SHA512

141317d11fade4685435dc6beabcf3675fc583bea082d5b01283b965e0e39d132da6c6c235b7a0652d2c09a4a0df684040a9491eb72db9a02f62b4c930fcf203
SSDEEP

49152:KakLXT1thrZAm2ypwiGJoZebkxlbFHuGlXcbKtNnHrN91F8ujWsBWKJmi:KaIXTUCKimkvbzxxLNFDjWtI

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\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\InprocServer32\ = "C:\\Program Files (x86)\\cosstminn\\FjQMtN.x64.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\InprocServer32	regsvr32.exe

Loads dropped DLL 3 IoCs

Processes:

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exeregsvr32.exeregsvr32.exe

pid process

2232 e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
3972 regsvr32.exe
1196 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:

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Extensions\khiiiolbfdojoeaboalecgmaccnmmekg\2.0\manifest.json	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File created	C:\Users\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\khiiiolbfdojoeaboalecgmaccnmmekg\2.0\manifest.json	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File created	C:\Users\DefaultAccount\AppData\Local\Google\Chrome\User Data\Default\Extensions\khiiiolbfdojoeaboalecgmaccnmmekg\2.0\manifest.json	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File created	C:\Users\Guest\AppData\Local\Google\Chrome\User Data\Default\Extensions\khiiiolbfdojoeaboalecgmaccnmmekg\2.0\manifest.json	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File created	C:\Users\WDAGUtilityAccount\AppData\Local\Google\Chrome\User Data\Default\Extensions\khiiiolbfdojoeaboalecgmaccnmmekg\2.0\manifest.json	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.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:

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exeregsvr32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\ = "cosstminn"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\NoExplorer = "1"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\ = "cosstminn"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\NoExplorer = "1"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}	regsvr32.exe

Drops file in System32 directory 4 IoCs

Processes:

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

description	ioc	process
File opened for modification	C:\Windows\System32\GroupPolicy	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File opened for modification	C:\Windows\SysWOW64\GroupPolicy\gpt.ini	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File created	C:\Windows\System32\GroupPolicy\Machine\Registry.pol	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File opened for modification	C:\Windows\System32\GroupPolicy\GPT.INI	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

Drops file in Program Files directory 8 IoCs

Processes:

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\cosstminn\FjQMtN.dll	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File created	C:\Program Files (x86)\cosstminn\FjQMtN.tlb	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File opened for modification	C:\Program Files (x86)\cosstminn\FjQMtN.tlb	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File created	C:\Program Files (x86)\cosstminn\FjQMtN.dat	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File opened for modification	C:\Program Files (x86)\cosstminn\FjQMtN.dat	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File created	C:\Program Files (x86)\cosstminn\FjQMtN.x64.dll	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File opened for modification	C:\Program Files (x86)\cosstminn\FjQMtN.x64.dll	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
File created	C:\Program Files (x86)\cosstminn\FjQMtN.dll	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

Processes:

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exeregsvr32.exe

description	ioc	process
Key deleted	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\MICROSOFT\INTERNET EXPLORER\APPROVEDEXTENSIONSMIGRATION\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key deleted	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key deleted	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\MICROSOFT\INTERNET EXPLORER\APPROVEDEXTENSIONSMIGRATION\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}	regsvr32.exe
Key deleted	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

Modifies registry class 64 IoCs

Processes:

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exeregsvr32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\ = "cosstminn"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\ProgID\ = "cosstminn.2.0"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\HELPDIR\ = "C:\\Program Files (x86)\\cosstminn"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\InprocServer32	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\ = "cosstminn"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer\ = "cosstminn.2.0"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\ProgID	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\ProgID\ = "cosstminn.2.0"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\VersionIndependentProgID\ = "cosstminn"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\0	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ = "IPlaghinMein"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\ = "cosstminn"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\InprocServer32	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\InprocServer32\ = "C:\\Program Files (x86)\\cosstminn\\FjQMtN.dll"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\Version = "1.0"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\ = "cosstminn"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\0\win32	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID\ = "{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CLSID\ = "{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\InprocServer32\ = "C:\\Program Files (x86)\\cosstminn\\FjQMtN.x64.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\Version = "1.0"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\ = "cosstminn"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\Version = "1.0"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ = "ILocalStorage"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\VersionIndependentProgID	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\Implemented Categories	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\HELPDIR	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\VersionIndependentProgID\ = "cosstminn"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID\ = "{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2}\VersionIndependentProgID	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

pid	process
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

description	pid	process
Token: SeDebugPrivilege	2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Token: SeDebugPrivilege	2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Token: SeDebugPrivilege	2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Token: SeDebugPrivilege	2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Token: SeDebugPrivilege	2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
Token: SeDebugPrivilege	2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exeregsvr32.exe

description	pid	process	target process
PID 2232 wrote to memory of 3972	2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe	regsvr32.exe
PID 2232 wrote to memory of 3972	2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe	regsvr32.exe
PID 2232 wrote to memory of 3972	2232	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe	regsvr32.exe
PID 3972 wrote to memory of 1196	3972	regsvr32.exe	regsvr32.exe
PID 3972 wrote to memory of 1196	3972	regsvr32.exe	regsvr32.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID\{6C2098E5-21C4-9F76-D8FD-87F4F22115E2} = "1"	e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe

C:\Users\Admin\AppData\Local\Temp\e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.exe
"C:\Users\Admin\AppData\Local\Temp\e54b81b3b492b2d0fea0b3ec5a23bfd3070f014fde5c90a8fd1a476f6cee9839.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:2232

C:\Windows\SysWOW64\regsvr32.exe
regsvr32.exe /s "C:\Program Files (x86)\cosstminn\FjQMtN.x64.dll"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3972

C:\Windows\system32\regsvr32.exe
/s "C:\Program Files (x86)\cosstminn\FjQMtN.x64.dll"
3⤵
- Registers COM server for autorun
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
PID:1196

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
1⤵
PID:3104

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
1⤵
PID:4100

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

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Downloads

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

MD5
caa33632bdb2b03a2381f19a87ce8439

SHA1
c286b78f9926c7d217eb0c9b9ab67ddb080e1e4a

SHA256
aa782c770454073cfccbc54a206a523b22543b05a5316f12e3d3957d1229575e

SHA512
f5baa7f1575ddedf15936094f7e0fe7d7f9cab560f5c9defa8e9f75021f4fb71acf4977f08d4234d83a84a3fa9d6f518a25cf42f2d207542e2011e263b55a495

Download Submit
C:\Program Files (x86)\cosstminn\FjQMtN.dll
Filesize
610KB

MD5
8c17652e3d7951221e9afeb07a4c71e6

SHA1
68aeb97e567f4e705d4126a60bd94ef567760b61

SHA256
4085d30c67ed3d336266d7dd5c2a1bfac8e6ba45f9240b31283e43ac9555ea24

SHA512
6f21a4058579e7babe1ee44199fc41bf282d6e0c92352c636f39160c7c9e61191f9eb4186dcba8f0a25cf51f97c181e3027f2bbcee9f723a85de159121655065

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

MD5
3fdfaa71c68f31e83daf46b214ff8c89

SHA1
fe4a9d2172e9a94570f46fc151b94f90db08da77

SHA256
2d4e42ee22cf2171777f6f2aa232df7a2ad3445b6988ee2f2666ec2a863aca93

SHA512
392faf168a97d35fc4fa414844cae3662d231f18d5db55891e6cf281f34cef590cb94f6a650565b5b2bdf2c0899dc872c432106449604079f3283da241f2a100

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

MD5
cd1a0489adc1f05fc31a65eb26e08c92

SHA1
95af9d7095d36dee3e4d2e2952ca1a199c2bb596

SHA256
b63804fa2e99e3bd6b8dac3e203cba731ae2317e1fdae32014a88ff40a7a4755

SHA512
52bc43818912822eb746196aea22b11287a914f156c2838e8c2bc01469758ac18f0575df3d05f7b37042e8c3fd88d5c905d69f359963d5d57c42d0bd7b073c19

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

MD5
cd1a0489adc1f05fc31a65eb26e08c92

SHA1
95af9d7095d36dee3e4d2e2952ca1a199c2bb596

SHA256
b63804fa2e99e3bd6b8dac3e203cba731ae2317e1fdae32014a88ff40a7a4755

SHA512
52bc43818912822eb746196aea22b11287a914f156c2838e8c2bc01469758ac18f0575df3d05f7b37042e8c3fd88d5c905d69f359963d5d57c42d0bd7b073c19

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

MD5
cd1a0489adc1f05fc31a65eb26e08c92

SHA1
95af9d7095d36dee3e4d2e2952ca1a199c2bb596

SHA256
b63804fa2e99e3bd6b8dac3e203cba731ae2317e1fdae32014a88ff40a7a4755

SHA512
52bc43818912822eb746196aea22b11287a914f156c2838e8c2bc01469758ac18f0575df3d05f7b37042e8c3fd88d5c905d69f359963d5d57c42d0bd7b073c19

Download Submit
memory/1196-145-0x0000000000000000-mapping.dmp

Download
memory/2232-139-0x0000000000DE0000-0x0000000000DE3000-memory.dmp

Filesize
12KB

Download
memory/2232-140-0x0000000000DE0000-0x0000000000DE3000-memory.dmp

Filesize
12KB

Download
memory/2232-132-0x0000000000400000-0x00000000004A0000-memory.dmp

Filesize
640KB

Download
memory/2232-138-0x0000000000DE0000-0x0000000000DE3000-memory.dmp

Filesize
12KB

Download
memory/2232-137-0x0000000000DE0000-0x0000000000DE3000-memory.dmp

Filesize
12KB

Download
memory/3972-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads