140f6d18134e2769c63f1ac6834f79dda4daf5c2e8463faa567ad935eb94bef7

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
28/06/2024, 11:38

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General

Target

$R0.dll
Size

625KB
MD5

6f1f975788de072cd665f03164be1c63
SHA1

c78dda52e6999ff3abf6756b3149fd8da95e3f9e
SHA256

2040f0442c8aef7c4b93b5b4adc75af8fbfd937e9225e13cf875d65906503fc8
SHA512

edf166a6ca25963f45b2e3ca2139808ae83b9c8c3e421477092001aa39e3c48d319b4d4ac650412cc1d8c4ba722949d237bb23d03726d14d8fec5ffaace98be8
SSDEEP

12288:iloaqcBXVQhJFHr46AhFgTwjqqvI1agYKzKhXWyVt22BG4SrHE4z8mCl/Lr:WKVZONcPJet2X4SAa8mC5r

Score

6^/10

adware stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 3 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\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\ = "InternetExplorer"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 46 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$R0.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetExplorer.InternetExplorer\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetExplorer.InternetExplorer\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetExplorer.InternetExplorer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\ProgID\ = "IE BHO.InternetExplorer.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\TypeLib\ = "{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetExplorer.InternetExplorer.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetExplorer.InternetExplorer.1\CLSID\ = "{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}\1.0\ = "InternetExplorer 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetExplorer.InternetExplorer\CurVer\ = "InternetExplorer.IE BHO.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\ = "IInternetExplorerBHO"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\TypeLib\ = "{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\ = "InternetExplorer Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$R0.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetExplorer.InternetExplorer.1\ = "InternetExplorer Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetExplorer.InternetExplorer\CLSID\ = "{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetExplorer.InternetExplorer.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\ = "IInternetExplorerBHO"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\TypeLib\ = "{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{EA4460A4-8B0A-41B1-864C-EBDA7EED4267}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{B5B030D9-7883-4741-B81E-5BBDA38E5A0A}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\InternetExplorer.InternetExplorer\ = "InternetExplorer Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{83CED28E-B96A-43FC-A276-2AD7A48EB6BE}\VersionIndependentProgID\ = "IE BHO.InternetExplorer"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 4420	2256	regsvr32.exe	83
PID 2256 wrote to memory of 4420	2256	regsvr32.exe	83
PID 2256 wrote to memory of 4420	2256	regsvr32.exe	83

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$R0.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$R0.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:4420

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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