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Analysis
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max time kernel
112s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
28/11/2022, 02:51
Static task
static1
Behavioral task
behavioral1
Sample
SCSK4.dll
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
SCSK4.dll
Resource
win10v2004-20220901-en
Behavioral task
behavioral3
Sample
SCSKAppLink.dll
Resource
win7-20220901-en
Behavioral task
behavioral4
Sample
SCSKAppLink.dll
Resource
win10v2004-20220812-en
Behavioral task
behavioral5
Sample
UnSCSK.exe
Resource
win7-20220812-en
Behavioral task
behavioral6
Sample
UnSCSK.exe
Resource
win10v2004-20221111-en
General
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Target
SCSK4.dll
-
Size
810KB
-
MD5
8f77e7268aa4d98e581404bb37eca990
-
SHA1
1de0a2a07adfb5bd595446e80a4ba3dcd9126cf9
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SHA256
de5eadf6c7b7774f4a76c327f598e28d7b744734c5bcbc225168dfdbcc61bb55
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SHA512
e05be4acce4b58680ec6daf937a92a022f9e57a50139033ebebc80c6fd1af54532acf802914fd8df54921891ba9f72e74de125a8673cceb0c244c6da767ee3c1
-
SSDEEP
24576:xAAnKPrOq5pTcOroBZSm+oxVforPCrMbghK2:TirOopYmY+oJhK2
Malware Config
Signatures
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Modifies registry class 64 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6CB8603A-9C60-4042-B7DE-8D37E3250443}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\SCSK4.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{47550E46-555E-4699-8AE8-8C8CF3050541}\ = "_DSCSK3Events" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CAEEBBAF-99EE-47C6-832F-7A3862ECB419} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SCSK3.EventOnfocus\CLSID\ = "{28D73FB6-FE5D-4A47-A705-DBB68A6FC18D}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6CB8603A-9C60-4042-B7DE-8D37E3250443}\ = "PassOnChange Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FE08A42D-5151-4354-9E8A-D14F371FE5AF} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C1BB00CE-73B0-4E14-9F57-7276C7C6262E}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C1BB00CE-73B0-4E14-9F57-7276C7C6262E} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6CB8603A-9C60-4042-B7DE-8D37E3250443}\VersionIndependentProgID\ = "SCSK3.PassOnChange" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5D6456CA-7BF7-4499-9EA1-B69051817BB3}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5D6456CA-7BF7-4499-9EA1-B69051817BB3}\1.0\ = "SCSK3 ActiveX Control module" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5D6456CA-7BF7-4499-9EA1-B69051817BB3}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A22E01FF-FB16-4530-8C49-33A3B5C0DAF4}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A22E01FF-FB16-4530-8C49-33A3B5C0DAF4}\ = "_DSCSK3" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{47550E46-555E-4699-8AE8-8C8CF3050541}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{39FC0CF9-86F3-4502-B773-D16706EDEC83} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{39FC0CF9-86F3-4502-B773-D16706EDEC83}\ = "SCSK Control" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SCSK3.PassOnChange.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SCSK3.EventOnchar.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SCSK3.EventOnchar\CLSID\ = "{C1BB00CE-73B0-4E14-9F57-7276C7C6262E}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2CF161A7-12F8-4A95-86FE-C006A9BDB43A}\TypeLib\ = "{5D6456CA-7BF7-4499-9EA1-B69051817BB3}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{3091D2CC-A2E2-4396-BF13-3D0DECD61B4F} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3091D2CC-A2E2-4396-BF13-3D0DECD61B4F}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{39FC0CF9-86F3-4502-B773-D16706EDEC83}\MiscStatus\1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C1BB00CE-73B0-4E14-9F57-7276C7C6262E}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F33C0534-2A50-463E-810C-04C5EC199F27}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5D6456CA-7BF7-4499-9EA1-B69051817BB3}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{47550E46-555E-4699-8AE8-8C8CF3050541}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CAEEBBAF-99EE-47C6-832F-7A3862ECB419}\ = "IEventOnchar" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2CF161A7-12F8-4A95-86FE-C006A9BDB43A}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{3091D2CC-A2E2-4396-BF13-3D0DECD61B4F}\TypeLib\ = "{5D6456CA-7BF7-4499-9EA1-B69051817BB3}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CF8E9AC3-3F0D-4B97-AE33-DF3D7B88EBAB}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{28D73FB6-FE5D-4A47-A705-DBB68A6FC18D} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2CF161A7-12F8-4A95-86FE-C006A9BDB43A}\ = "IEventOnfocus" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2CF161A7-12F8-4A95-86FE-C006A9BDB43A}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A22E01FF-FB16-4530-8C49-33A3B5C0DAF4} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A22E01FF-FB16-4530-8C49-33A3B5C0DAF4}\ = "_DSCSK3" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F33C0534-2A50-463E-810C-04C5EC199F27}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FE08A42D-5151-4354-9E8A-D14F371FE5AF}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\SCSK4.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C1BB00CE-73B0-4E14-9F57-7276C7C6262E}\Programmable regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F33C0534-2A50-463E-810C-04C5EC199F27}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{39FC0CF9-86F3-4502-B773-D16706EDEC83}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{39FC0CF9-86F3-4502-B773-D16706EDEC83}\ToolboxBitmap32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A22E01FF-FB16-4530-8C49-33A3B5C0DAF4}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2CF161A7-12F8-4A95-86FE-C006A9BDB43A}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6CB8603A-9C60-4042-B7DE-8D37E3250443} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{28D73FB6-FE5D-4A47-A705-DBB68A6FC18D}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{28D73FB6-FE5D-4A47-A705-DBB68A6FC18D}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CAEEBBAF-99EE-47C6-832F-7A3862ECB419}\TypeLib\ = "{5D6456CA-7BF7-4499-9EA1-B69051817BB3}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C1BB00CE-73B0-4E14-9F57-7276C7C6262E}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\SCSK4.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5D6456CA-7BF7-4499-9EA1-B69051817BB3}\1.0\FLAGS\ = "2" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{3091D2CC-A2E2-4396-BF13-3D0DECD61B4F}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SCSK3.EventOnfocus.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2CF161A7-12F8-4A95-86FE-C006A9BDB43A}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SCSK3.EventOnfocus\CurVer\ = "SCSK3.EventOnfocus.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SCSK3.EventOnPaste.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SCSK3.PassOnChange.1\ = "PassOnChange Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{47550E46-555E-4699-8AE8-8C8CF3050541}\TypeLib\ = "{5D6456CA-7BF7-4499-9EA1-B69051817BB3}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SCSK3.SCSK3Ctrl.1\ = "SCSK Control" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{28D73FB6-FE5D-4A47-A705-DBB68A6FC18D}\VersionIndependentProgID\ = "SCSK3.EventOnfocus" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{CF8E9AC3-3F0D-4B97-AE33-DF3D7B88EBAB}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6CB8603A-9C60-4042-B7DE-8D37E3250443}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6CB8603A-9C60-4042-B7DE-8D37E3250443}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CF8E9AC3-3F0D-4B97-AE33-DF3D7B88EBAB}\TypeLib\Version = "1.0" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4868 wrote to memory of 4956 4868 regsvr32.exe 80 PID 4868 wrote to memory of 4956 4868 regsvr32.exe 80 PID 4868 wrote to memory of 4956 4868 regsvr32.exe 80