59edcb6c99dfff6985c72b7bc706875f5b85ac810c6d37f5b6d4ee5b8f09043d

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
10/01/2024, 02:16

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General

Target

4f50a212a8c837917c834abf76f19bf1.dll
Size

546KB
MD5

4f50a212a8c837917c834abf76f19bf1
SHA1

a92d8dae7de987c98bce0ec09e72f96d85b91ed3
SHA256

59edcb6c99dfff6985c72b7bc706875f5b85ac810c6d37f5b6d4ee5b8f09043d
SHA512

d2c03053960a455aa661d94e86715ba9b1898f005fb06605bb643d381b79abbd5abe24af8f6bcf4564f48089c949bb850ec01506119f70011ce99f5686362001
SSDEEP

12288:jisJfKjG2fcIlDuZ8NwtLiazT+qfSHdka3kyhTOYQn/:jTEG2lDu2SzqpHR3DTO7n

Score

6^/10

adware 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\{82FE757D-2859-454C-A4A3-D70416F731F8}	regsvr32.exe

Modifies registry class 11 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82FE757D-2859-454C-A4A3-D70416F731F8}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82FE757D-2859-454C-A4A3-D70416F731F8}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\4f50a212a8c837917c834abf76f19bf1.GetFlash	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\4f50a212a8c837917c834abf76f19bf1.GetFlash\ = "ExFlash"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\4f50a212a8c837917c834abf76f19bf1.GetFlash\Clsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\4f50a212a8c837917c834abf76f19bf1.GetFlash\Clsid\ = "{82FE757D-2859-454C-A4A3-D70416F731F8}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82FE757D-2859-454C-A4A3-D70416F731F8}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82FE757D-2859-454C-A4A3-D70416F731F8}\ = "ExFlash"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82FE757D-2859-454C-A4A3-D70416F731F8}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82FE757D-2859-454C-A4A3-D70416F731F8}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4f50a212a8c837917c834abf76f19bf1.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{82FE757D-2859-454C-A4A3-D70416F731F8}\ProgID\ = "4f50a212a8c837917c834abf76f19bf1.GetFlash"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1776 wrote to memory of 1732	1776	regsvr32.exe	14
PID 1776 wrote to memory of 1732	1776	regsvr32.exe	14
PID 1776 wrote to memory of 1732	1776	regsvr32.exe	14
PID 1776 wrote to memory of 1732	1776	regsvr32.exe	14
PID 1776 wrote to memory of 1732	1776	regsvr32.exe	14
PID 1776 wrote to memory of 1732	1776	regsvr32.exe	14
PID 1776 wrote to memory of 1732	1776	regsvr32.exe	14

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\4f50a212a8c837917c834abf76f19bf1.dll
1⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:1732

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4f50a212a8c837917c834abf76f19bf1.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1776

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

Replay Monitor

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Downloads

memory/1732-0-0x00000000001B0000-0x000000000023D000-memory.dmp

Filesize
564KB

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