917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3

General

Target

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Size

3.0MB
MD5

65f49288a70b3d7b69d82e1feeafb2f4
SHA1

0ffef7e980331930c45d341a87c20705ea8a3360
SHA256

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3
SHA512

981707c177f294b9270f42d72151940708381087b6b0d2fbacc8bb4955e1e2996f9463c9b8378f2c83af4c83f324ed3e0de64434dd971125e07af323c715dd27
SSDEEP

49152:mjlv2h3YZUZeHDgzlcBwb9gs8cjdk2+AAi/TcWsNkLLfy/AHi6y:iv2FI+ecJcBwJgs8ca2aWZHy/A

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\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\InprocServer32\ = "C:\\Program Files (x86)\\cosstminn\\04I.x64.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\InprocServer32	regsvr32.exe

Loads dropped DLL 3 IoCs

Processes:

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exeregsvr32.exeregsvr32.exe

pid process

1284 917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
1716 regsvr32.exe
740 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:

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Extensions\bappfjkacaiebfiimlkglfhadfajmgnh\2.0\manifest.json	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File created	C:\Users\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\bappfjkacaiebfiimlkglfhadfajmgnh\2.0\manifest.json	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File created	C:\Users\Guest\AppData\Local\Google\Chrome\User Data\Default\Extensions\bappfjkacaiebfiimlkglfhadfajmgnh\2.0\manifest.json	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.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:

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exeregsvr32.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\NoExplorer = "1"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\ = "cosstminn"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\NoExplorer = "1"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\ = "cosstminn"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

Drops file in System32 directory 4 IoCs

Processes:

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

description	ioc	process
File opened for modification	C:\Windows\System32\GroupPolicy\GPT.INI	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File opened for modification	C:\Windows\System32\GroupPolicy	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File opened for modification	C:\Windows\SysWOW64\GroupPolicy\gpt.ini	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File created	C:\Windows\System32\GroupPolicy\Machine\Registry.pol	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

Drops file in Program Files directory 8 IoCs

Processes:

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\cosstminn\04I.x64.dll	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File created	C:\Program Files (x86)\cosstminn\04I.dll	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File opened for modification	C:\Program Files (x86)\cosstminn\04I.dll	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File created	C:\Program Files (x86)\cosstminn\04I.tlb	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File opened for modification	C:\Program Files (x86)\cosstminn\04I.tlb	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File created	C:\Program Files (x86)\cosstminn\04I.dat	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File opened for modification	C:\Program Files (x86)\cosstminn\04I.dat	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
File created	C:\Program Files (x86)\cosstminn\04I.x64.dll	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

Processes:

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exeregsvr32.exe

description	ioc	process
Key deleted	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}	regsvr32.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\ApprovedExtensionsMigration\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

Modifies registry class 64 IoCs

Processes:

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exeregsvr32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\Version = "1.0"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CLSID\ = "{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID\ = "{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\VersionIndependentProgID\ = "cosstminn"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\ = "cosstminn"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640}	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\Implemented Categories	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CLSID	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\InprocServer32	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\FLAGS\ = "0"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ = "IPlaghinMein"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\ = "cosstminn"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\Version = "1.0"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CurVer\ = "cosstminn.2.0"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\ProgID	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\Implemented Categories	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\Version = "1.0"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ = "IRegistry"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\ProgID\ = "cosstminn.2.0"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\ = "IEPluginLib"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\ProgID	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\FLAGS	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\Version = "1.0"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\Version = "1.0"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\ = "cosstminn"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\CLSID\ = "{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\ProgID\ = "cosstminn.2.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}\1.0\0	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\ = "ILocalStorage"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7041156A-0D2B-4DCD-A8EE-D0608BFCB2D0}\TypeLib\ = "{E2343056-CC08-46AC-B898-BFC7ACF4E755}"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn.2.0\CLSID\ = "{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\cosstminn.cosstminn\ = "cosstminn"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\Programmable	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E2343056-CC08-46AC-B898-BFC7ACF4E755}	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ProxyStubClsid32	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D}	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{EAF749DC-CD87-4B04-B22A-D4AC3FBCB2BC}\ = "IRegistry"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9B41579A-1996-42F9-8F84-7B7786818CEF}	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

pid	process
1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

description	pid	process
Token: SeDebugPrivilege	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Token: SeDebugPrivilege	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Token: SeDebugPrivilege	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Token: SeDebugPrivilege	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Token: SeDebugPrivilege	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Token: SeDebugPrivilege	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exeregsvr32.exe

description	pid	process	target process
PID 1284 wrote to memory of 1716	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe	regsvr32.exe
PID 1284 wrote to memory of 1716	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe	regsvr32.exe
PID 1284 wrote to memory of 1716	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe	regsvr32.exe
PID 1284 wrote to memory of 1716	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe	regsvr32.exe
PID 1284 wrote to memory of 1716	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe	regsvr32.exe
PID 1284 wrote to memory of 1716	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe	regsvr32.exe
PID 1284 wrote to memory of 1716	1284	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe	regsvr32.exe
PID 1716 wrote to memory of 740	1716	regsvr32.exe	regsvr32.exe
PID 1716 wrote to memory of 740	1716	regsvr32.exe	regsvr32.exe
PID 1716 wrote to memory of 740	1716	regsvr32.exe	regsvr32.exe
PID 1716 wrote to memory of 740	1716	regsvr32.exe	regsvr32.exe
PID 1716 wrote to memory of 740	1716	regsvr32.exe	regsvr32.exe
PID 1716 wrote to memory of 740	1716	regsvr32.exe	regsvr32.exe
PID 1716 wrote to memory of 740	1716	regsvr32.exe	regsvr32.exe

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

Processes:

917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Ext\CLSID\{6A44B13C-7B36-2FD3-A8CB-5258C61E611D} = "1"	917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe

C:\Users\Admin\AppData\Local\Temp\917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.exe
"C:\Users\Admin\AppData\Local\Temp\917778ad39300fd25dc2901f36396c1e299827e66b1bb8cac2e9e23b20cde3a3.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:1284

C:\Windows\SysWOW64\regsvr32.exe
regsvr32.exe /s "C:\Program Files (x86)\cosstminn\04I.x64.dll"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1716

C:\Windows\system32\regsvr32.exe
/s "C:\Program Files (x86)\cosstminn\04I.x64.dll"
3⤵
- Registers COM server for autorun
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
PID:740

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

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Downloads

C:\Program Files (x86)\cosstminn\04I.dat
Filesize
4KB

MD5
de368bd34dc36ce41711a49001481fa7

SHA1
b91011d79f7ab077941ea70374f725389c981a7e

SHA256
48c1e087fb793d93a79d7e516aa9cdc6ff58d2fa393895a5c5f67820771c0d7f

SHA512
528d7235f80b2f52d476fca1db30933b098f416080511e4c436b58fca2f112c5216d237ca9c605c5be53d258c5bcb75a888dfb0698519669e5c4e3d52cf920a6

Download Submit
C:\Program Files (x86)\cosstminn\04I.tlb
Filesize
3KB

MD5
596b14afa3a4cf4a24f570f58c5bf9dc

SHA1
5283fef61f1129881eb5f49c8058381ef2205054

SHA256
f91335a2720866f56454e5121b50ec26c88fb2b7545c07a1090119cdf79d2e17

SHA512
81303f8baed9043e7a2cbeb891b9742e8db284e10a229fc6e46a99f4e239da616c5223f2d400b74c4bfd9b937a8c882b5cf98aa8b46943d8deb2a3e06b4c1c2d

Download Submit
C:\Program Files (x86)\cosstminn\04I.x64.dll
Filesize
684KB

MD5
5b557ca9bc92357eb76a8c576df86e6d

SHA1
a66eecc091839bd0b6617f8332c35924f75c768c

SHA256
29cd1cde949335d2d55629992320462479188f220e973dbf844d8ac47aef4bb5

SHA512
d5bea462fd63ccfe590713b591608a358f356539309194c215975b597e366ef42044f6481b7ca8cc748dc6552d63e1e838ac977e2c120851b20986c1115e0b2e

Download Submit
\Program Files (x86)\cosstminn\04I.dll
Filesize
606KB

MD5
d0a9fd704266fb372807507df74c4101

SHA1
ec68536756c4af9d1f272077641be746bcb45394

SHA256
c4488056716132ddbc950f968acc358dc0b0973e6b5d3afd4fe5f7dc037dde2d

SHA512
d78e6600a9711dc21a6e086b8db713eb12d671052e543c16a74f12daeb97e12ec7c5ed9d39813882bcba5c6131af943115bcc35e68b891d5f59349e085ef24f7

Download Submit
\Program Files (x86)\cosstminn\04I.x64.dll
Filesize
684KB

MD5
5b557ca9bc92357eb76a8c576df86e6d

SHA1
a66eecc091839bd0b6617f8332c35924f75c768c

SHA256
29cd1cde949335d2d55629992320462479188f220e973dbf844d8ac47aef4bb5

SHA512
d5bea462fd63ccfe590713b591608a358f356539309194c215975b597e366ef42044f6481b7ca8cc748dc6552d63e1e838ac977e2c120851b20986c1115e0b2e

Download Submit
\Program Files (x86)\cosstminn\04I.x64.dll
Filesize
684KB

MD5
5b557ca9bc92357eb76a8c576df86e6d

SHA1
a66eecc091839bd0b6617f8332c35924f75c768c

SHA256
29cd1cde949335d2d55629992320462479188f220e973dbf844d8ac47aef4bb5

SHA512
d5bea462fd63ccfe590713b591608a358f356539309194c215975b597e366ef42044f6481b7ca8cc748dc6552d63e1e838ac977e2c120851b20986c1115e0b2e

Download Submit
memory/740-81-0x000007FEFBB31000-0x000007FEFBB33000-memory.dmp

Filesize
8KB

Download
memory/740-80-0x0000000000000000-mapping.dmp

Download
memory/1284-70-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-66-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-68-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-69-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-54-0x0000000075F51000-0x0000000075F53000-memory.dmp

Filesize
8KB

Download
memory/1284-71-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-72-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-73-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-74-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-67-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-55-0x0000000000400000-0x00000000004A1000-memory.dmp

Filesize
644KB

Download
memory/1284-65-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-64-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-63-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-62-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-61-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1284-60-0x00000000006D2000-0x00000000006D6000-memory.dmp

Filesize
16KB

Download
memory/1716-76-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads