724500fee4e1c5e15c52fdcdf5c1aba918580d6755d136bdb83ff4619f1347f5

Analysis

max time kernel
93s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2024, 07:29

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General

Target

ie/RichMediaViewV1release766.dll
Size

85KB
MD5

1ed7c2b693b72d44513752894d9cc416
SHA1

d7166e8c19232de3ec03e6c7ab345e22a3330a6b
SHA256

8392afd7bc1ea45fe63ca0d1044bdd1274c5490af373ef33e4cab9d968b7c151
SHA512

3f640b5df6118a4390a5ec3646e68192155ed8bf87bb269d2b9960c120860ad9f6b0fb7cd3709540215ea70469b411b4ec4c05c431f54fa9f72625fd9aafd232
SSDEEP

1536:hkf9Csc+EE7MsV5N60GlVk8jkrwtgnqLhPLlQT9CNBZ:y9++EEwsR6FlVtgnmaT9Cd

Score

6^/10

adware discovery 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\{f26fc296-6bad-483e-99a8-f7d783e33233}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f26fc296-6bad-483e-99a8-f7d783e33233}\ = "RichMediaViewV1release766"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f26fc296-6bad-483e-99a8-f7d783e33233}\NoExplorer = "1"	regsvr32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	regsvr32.exe

Modifies registry class 34 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}\1.1\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f26fc296-6bad-483e-99a8-f7d783e33233}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ie\\RichMediaViewV1release766.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f26fc296-6bad-483e-99a8-f7d783e33233}\TypeLib\ = "{f06eaf1d-e331-4a05-b73b-6f9582b7bae6}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f26fc296-6bad-483e-99a8-f7d783e33233}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f26fc296-6bad-483e-99a8-f7d783e33233}\ = "RichMediaViewV1release766"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f26fc296-6bad-483e-99a8-f7d783e33233}\Version	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}\1.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\TypeLib\Version = "1.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\ = "IRichMediaViewV1release766BHO"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f26fc296-6bad-483e-99a8-f7d783e33233}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}\1.1\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ie\\RichMediaViewV1release766.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\TypeLib\ = "{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\TypeLib\Version = "1.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f26fc296-6bad-483e-99a8-f7d783e33233}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f26fc296-6bad-483e-99a8-f7d783e33233}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f26fc296-6bad-483e-99a8-f7d783e33233}\Version\ = "1.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\TypeLib\ = "{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}\1.1\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}\1.1\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}\1.1\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ie"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}\1.1\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f26fc296-6bad-483e-99a8-f7d783e33233}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}\1.1\ = "RichMediaViewV1release766Lib"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F06EAF1D-E331-4A05-B73B-6F9582B7BAE6}\1.1\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{6C23F7CE-9179-4225-90EB-7E7A66BEDE17}\ = "IRichMediaViewV1release766BHO"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3688 wrote to memory of 4392	3688	regsvr32.exe	82
PID 3688 wrote to memory of 4392	3688	regsvr32.exe	82
PID 3688 wrote to memory of 4392	3688	regsvr32.exe	82

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ie\RichMediaViewV1release766.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3688
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\ie\RichMediaViewV1release766.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:4392

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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