855b65baf504592a4f3a84a1821cdff0ceff94e4ef1448d4d45af846090cbf19

Analysis

max time kernel
112s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2022 06:31

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General

Target

855b65baf504592a4f3a84a1821cdff0ceff94e4ef1448d4d45af846090cbf19.dll
Size

517KB
MD5

c1bcf1aaa281e993afda2f13883abf2c
SHA1

45a0f4fb5bcb020a4d136f0230eb23df6042fbed
SHA256

855b65baf504592a4f3a84a1821cdff0ceff94e4ef1448d4d45af846090cbf19
SHA512

2d72cac8bb7f48e472d768925e8fd9f76c79a6baff2b205464841164ab763136330869d0d4782d45e47882d6f02e9fdbd48ed5311cd702d151a8e34158d4f8e7
SSDEEP

12288:NOFSu/suN+mMFTh/x9StsS5DY6P83/lL+RTg9vfB:NOFSox8fGsyOZkaHB

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

Processes:

regsvr32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{0DBB4430-2805-4FF2-AC7D-43985BC678B8}	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{0DBB4430-2805-4FF2-AC7D-43985BC678B8}	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

regsvr32.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\New Windows\Allow\*.bradesco.com.br	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\New Windows\Allow	regsvr32.exe

Modifies registry class 11 IoCs

Processes:

regsvr32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0DBB4430-2805-4FF2-AC7D-43985BC678B8}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\855b65baf504592a4f3a84a1821cdff0ceff94e4ef1448d4d45af846090cbf19.Alx2000_19\Clsid\ = "{0DBB4430-2805-4FF2-AC7D-43985BC678B8}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0DBB4430-2805-4FF2-AC7D-43985BC678B8}\ProgID\ = "855b65baf504592a4f3a84a1821cdff0ceff94e4ef1448d4d45af846090cbf19.Alx2000_19"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0DBB4430-2805-4FF2-AC7D-43985BC678B8}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0DBB4430-2805-4FF2-AC7D-43985BC678B8}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\855b65baf504592a4f3a84a1821cdff0ceff94e4ef1448d4d45af846090cbf19.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\855b65baf504592a4f3a84a1821cdff0ceff94e4ef1448d4d45af846090cbf19.Alx2000_19	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\855b65baf504592a4f3a84a1821cdff0ceff94e4ef1448d4d45af846090cbf19.Alx2000_19\ = "Alx2000"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\855b65baf504592a4f3a84a1821cdff0ceff94e4ef1448d4d45af846090cbf19.Alx2000_19\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0DBB4430-2805-4FF2-AC7D-43985BC678B8}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0DBB4430-2805-4FF2-AC7D-43985BC678B8}\ = "Alx2000"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0DBB4430-2805-4FF2-AC7D-43985BC678B8}\InprocServer32	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

regsvr32.exe

description	pid	process	target process
PID 3008 wrote to memory of 2324	3008	regsvr32.exe	regsvr32.exe
PID 3008 wrote to memory of 2324	3008	regsvr32.exe	regsvr32.exe
PID 3008 wrote to memory of 2324	3008	regsvr32.exe	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\855b65baf504592a4f3a84a1821cdff0ceff94e4ef1448d4d45af846090cbf19.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3008

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\855b65baf504592a4f3a84a1821cdff0ceff94e4ef1448d4d45af846090cbf19.dll
2⤵
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
PID:2324

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2324-132-0x0000000000000000-mapping.dmp

Download
memory/2324-133-0x0000000000830000-0x000000000098D000-memory.dmp

Filesize
1.4MB

Download
memory/2324-134-0x0000000000830000-0x000000000098D000-memory.dmp

Filesize
1.4MB

Download
memory/2324-135-0x0000000000830000-0x000000000098D000-memory.dmp

Filesize
1.4MB

Download
memory/2324-136-0x0000000000830000-0x000000000098D000-memory.dmp

Filesize
1.4MB

Download