5d6c0a2496fa26999029bc9da666c0c82f37e536ff0691eb1e7cb73e96089a8c

Analysis

max time kernel
149s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
26/07/2024, 21:38

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General

Target

IETab.exe
Size

130KB
MD5

22add2b7ef97a0b55ec38725e4c11949
SHA1

74798d34a4dcb36a47a92beeeed39c17d9ac41b8
SHA256

523272e8b73598374556d0ac3cd2d58f84e54e3c6253b976a3e72776a4a99151
SHA512

0aa8c90b70ef4d6297cb4a89f89f65b0813e236587ab5b92ae279bf526535f68610e4f8159351303e90243da5d551f80c6fe23c91b2b4a67b6550597d300ee22
SSDEEP

3072:2ZsvfBkD8XaDpN/kZdds7KKI/XnPz7Ptf:ysG0aDpN/4CTIfP35

Score

6^/10

adware discovery persistence stealer

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\IETab = "C:\\Users\\Admin\\AppData\\Local\\Temp\\IETab.exe"	IETab.exe

Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{B60FE1D2-2F84-42a7-AE04-03284738CC24}	regsvr32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IETab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1403246978-718555486-3105247137-1000\SOFTWARE\Microsoft\Internet Explorer\Main\TabProcGrowth = "0"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\TabProcGrowth = "0"	regsvr32.exe

Modifies registry class 46 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}\VersionIndependentProgID\ = "IETab.InSideBand"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC40EBFB-929E-400E-AA4B-5BC683900A8E}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\ = "IInSideBand"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IETab.InSideBand\ = "InSideBand Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}\ProgID\ = "IETab.InSideBand.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC40EBFB-929E-400E-AA4B-5BC683900A8E}\1.0\ = "IETab 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC40EBFB-929E-400E-AA4B-5BC683900A8E}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\TypeLib\ = "{DC40EBFB-929E-400E-AA4B-5BC683900A8E}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IETab.InSideBand.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IETab.InSideBand\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC40EBFB-929E-400E-AA4B-5BC683900A8E}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IETab.InSideBand.1\ = "InSideBand Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IETab.InSideBand.1\CLSID\ = "{B60FE1D2-2F84-42a7-AE04-03284738CC24}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}\TypeLib\ = "{DC40EBFB-929E-400E-AA4B-5BC683900A8E}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC40EBFB-929E-400E-AA4B-5BC683900A8E}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC40EBFB-929E-400E-AA4B-5BC683900A8E}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IETab.InSideBand\CLSID\ = "{B60FE1D2-2F84-42a7-AE04-03284738CC24}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IETab.InSideBand\CurVer\ = "IETab.InSideBand.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IETab.InSideBand.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IETab.InSideBand\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC40EBFB-929E-400E-AA4B-5BC683900A8E}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC40EBFB-929E-400E-AA4B-5BC683900A8E}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\IETab.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\ = "IInSideBand"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IETab.InSideBand	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\IETab.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC40EBFB-929E-400E-AA4B-5BC683900A8E}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DC40EBFB-929E-400E-AA4B-5BC683900A8E}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17625A54-760C-4C42-B04E-E59339BC2DA1}\TypeLib\ = "{DC40EBFB-929E-400E-AA4B-5BC683900A8E}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}\ = "IETab"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B60FE1D2-2F84-42a7-AE04-03284738CC24}\InprocServer32	regsvr32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3276	IETab.exe
3276	IETab.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3276 wrote to memory of 3532	3276	IETab.exe	86
PID 3276 wrote to memory of 3532	3276	IETab.exe	86
PID 3276 wrote to memory of 3532	3276	IETab.exe	86

C:\Users\Admin\AppData\Local\Temp\IETab.exe
"C:\Users\Admin\AppData\Local\Temp\IETab.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3276
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32 /s "C:\Users\Admin\AppData\Local\Temp\IETab.dll"
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Modifies registry class
  PID:3532