8bc048f9bede0090e4336fa3304ac0ab71da97026c7962104751b61aec3e25c0

Analysis

max time kernel
93s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 16:08

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General

Target
ie/RichMediaViewV1release141.dll
Size 85KB
Sample240204-tk8elsfhcr
SHA256 0af78ee97aaddc5e9ee2d6f59c1988451267cbf702adb1cb543528e9b8eb05b2
MD5 8b77c1616000c06d637b803940ebef36
SHA1 7be083705349830f0dbf17b491e82b95bc5cf0a6
SHA512 3c26080c71cbf814f083223d5a45ec5ef7c9da1a585a56ca3b67a24fdb9d8b8f976c53003f78b39bf162652b0495fc9fc3d7d76573f2ce52a58d46ba065ba384
SSDEEP 1536:9kf9Csc+EE7Msd5N60GlVk8jkrw95nqLhPLlQajwtBZ:O9++EEwsJ6FlV95nmaajw9
MD5 SHA1 SHA512 SSDEEP

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\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}\ = "RichMediaViewV1release141"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 34 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}\1.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\TypeLib\Version = "1.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}\1.1\ = "RichMediaViewV1release141Lib"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}\1.1\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ie"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\ = "IRichMediaViewV1release141BHO"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}\TypeLib\ = "{7f9502d3-15ea-45a3-a4ad-de891ad9b31c}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}\1.1\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ie\\RichMediaViewV1release141.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}\1.1\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\TypeLib\ = "{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\TypeLib\Version = "1.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\ = "IRichMediaViewV1release141BHO"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}\1.1\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C2EB805C-F0C8-4DAB-8D9F-55A7036C6712}\TypeLib\ = "{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}\1.1\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}\ = "RichMediaViewV1release141"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ie\\RichMediaViewV1release141.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}\Version	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f3263c85-5df4-4ef6-940b-f4852ff95e3c}\Version\ = "1.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}\1.1\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{7F9502D3-15EA-45A3-A4AD-DE891AD9B31C}\1.1\0\win32	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 4148	2368	regsvr32.exe	84
PID 2368 wrote to memory of 4148	2368	regsvr32.exe	84
PID 2368 wrote to memory of 4148	2368	regsvr32.exe	84

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ie\RichMediaViewV1release141.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\ie\RichMediaViewV1release141.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:4148

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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