dcb1ef0b347e0c73ebbd2bd2292f5097df2a615368d7a12691d61ce93c242dbf

Analysis

max time kernel
145s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 09:41

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General

Target
14dd3e90aea6dae0b83b099f05add821.dll
Size 511KB
Sample231225-ln791shefm
SHA256 dcb1ef0b347e0c73ebbd2bd2292f5097df2a615368d7a12691d61ce93c242dbf
MD5 14dd3e90aea6dae0b83b099f05add821
SHA1 7228acce45c578b387006a0080f15e3362cbd984
SHA512 646147dad3e0e9575e1d821a9bb2748852648aac452e7bbd66dd62b7d6daff1d8b9f12018014a599626043b87000f00a69e9a279c1800f192f7e9aa607fd6e34
SSDEEP 12288:dRlrwQbmg3kos2fwDeEB6QMBvzIKhjkRV/2:dRlrwQbmg0os2fwDJB6QM5zNhkRE
MD5 SHA1 SHA512 SSDEEP

Score

6^/10

adware stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 2 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\{BF234E17-DAC8-8C20-83FB-9040ADEF10D9}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{BF234E17-DAC8-8C20-83FB-9040ADEF10D9}\NoExplorer = "1"	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Internet Explorer\Explorer Bars\{B234C8B0-8D85-C44A-99E7-439BC9350A1E}	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Internet Explorer\Explorer Bars	regsvr32.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF234E17-DAC8-8C20-83FB-9040ADEF10D9}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF234E17-DAC8-8C20-83FB-9040ADEF10D9}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\14dd3e90aea6dae0b83b099f05add821.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B234C8B0-8D85-C44A-99E7-439BC9350A1E}\InProcServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B234C8B0-8D85-C44A-99E7-439BC9350A1E}\ = "Search panel"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B234C8B0-8D85-C44A-99E7-439BC9350A1E}\InProcServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B234C8B0-8D85-C44A-99E7-439BC9350A1E}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\14dd3e90aea6dae0b83b099f05add821.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B234C8B0-8D85-C44A-99E7-439BC9350A1E}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF234E17-DAC8-8C20-83FB-9040ADEF10D9}\InProcServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B234C8B0-8D85-C44A-99E7-439BC9350A1E}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B234C8B0-8D85-C44A-99E7-439BC9350A1E}\Implemented Categories\{00021493-0000-0000-C000-000000000046}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B234C8B0-8D85-C44A-99E7-439BC9350A1E}\Implemented Categories	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF234E17-DAC8-8C20-83FB-9040ADEF10D9}\ = "precisead search enhancer"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF234E17-DAC8-8C20-83FB-9040ADEF10D9}\InProcServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4516 wrote to memory of 376	4516	regsvr32.exe	15
PID 4516 wrote to memory of 376	4516	regsvr32.exe	15
PID 4516 wrote to memory of 376	4516	regsvr32.exe	15

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\14dd3e90aea6dae0b83b099f05add821.dll
1⤵
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
PID:376

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\14dd3e90aea6dae0b83b099f05add821.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4516

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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