de8c8b9da365ddab4c02abcadaf9ccbf3f4b84c5ff5ea8daec4ee6165a66a68f

Analysis

max time kernel
130s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
26/07/2024, 03:02

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General

Target

WebInstaller.exe
Size

119KB
MD5

fa8d5d7db8a672477f58c3288e80f2b4
SHA1

c9c5646a56f2821524f1bd2ec96e8791e02f351b
SHA256

7d66b5bdcf642395fe8f90360568c5b217e14ddb900cc1162a49fc57db4bb459
SHA512

3b93a81c3af546e682a6523ae626e0ef0572b866cd1390797e91d4450103b8e0ba3a9ad80ea37c291abaea815c1455bc3bbbb0fd4af75a6d258137b3b7dc96f0
SSDEEP

3072:9AcmfYSVXXSFKnYkWKvkowrCnK+mnhAB4i:CcmfYIX9YbKsoFnS+l

Score

6^/10

adware discovery stealer

Malware Config

Signatures

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\{8CA5ED52-F3FB-4414-A105-2E3491156990}	regsvr32.exe

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	WebInstaller.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 42 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CA5ED52-F3FB-4414-A105-2E3491156990}\ = "IEHlprObj Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CA5ED52-F3FB-4414-A105-2E3491156990}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CA5ED52-F3FB-4414-A105-2E3491156990}\VersionIndependentProgID\ = "IEHlprObj.IEHlprObj"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{495874FE-4A82-4AD1-9476-0B957E0B95EB}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\ = "IIEHlprObj"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID\ = "{8CA5ED52-F3FB-4414-A105-2E3491156990}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CA5ED52-F3FB-4414-A105-2E3491156990}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CA5ED52-F3FB-4414-A105-2E3491156990}\ProgID\ = "IEHlprObj.IEHlprObj.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CA5ED52-F3FB-4414-A105-2E3491156990}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{495874FE-4A82-4AD1-9476-0B957E0B95EB}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{495874FE-4A82-4AD1-9476-0B957E0B95EB}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\iWinGamesHookIE.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\TypeLib\ = "{495874FE-4A82-4AD1-9476-0B957E0B95EB}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\ = "IEHlprObj Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\ = "IIEHlprObj"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\ = "IEHlprObj Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CA5ED52-F3FB-4414-A105-2E3491156990}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{495874FE-4A82-4AD1-9476-0B957E0B95EB}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CA5ED52-F3FB-4414-A105-2E3491156990}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\iWinGamesHookIE.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CA5ED52-F3FB-4414-A105-2E3491156990}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{495874FE-4A82-4AD1-9476-0B957E0B95EB}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{495874FE-4A82-4AD1-9476-0B957E0B95EB}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\TypeLib\ = "{495874FE-4A82-4AD1-9476-0B957E0B95EB}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CA5ED52-F3FB-4414-A105-2E3491156990}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{495874FE-4A82-4AD1-9476-0B957E0B95EB}\1.0\ = "iFunWebHookIE Type Library for IE Integration"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{495874FE-4A82-4AD1-9476-0B957E0B95EB}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\CurVer\ = "IEHlprObj.IEHlprObj.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{495874FE-4A82-4AD1-9476-0B957E0B95EB}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{495874FE-4A82-4AD1-9476-0B957E0B95EB}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E3ED53C5-7AD5-4DF5-9734-AFB6E7E5D9DB}\TypeLib\Version = "1.0"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 3692	4616	WebInstaller.exe	84
PID 4616 wrote to memory of 3692	4616	WebInstaller.exe	84
PID 4616 wrote to memory of 3692	4616	WebInstaller.exe	84

C:\Users\Admin\AppData\Local\Temp\WebInstaller.exe
"C:\Users\Admin\AppData\Local\Temp\WebInstaller.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32 /s /i "C:\Users\Admin\AppData\Local\Temp\iWinGamesHookIE.dll"
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:3692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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