Malware Analysis Report

2025-01-18 21:11

Sample ID 240325-ks5h9aee7v
Target dd9b8a0ea2bf018dbd6f520008a668b1
SHA256 eb534ee3857c4d237e6214818b7d6d0bd72a5441a0d19e57202ed79b2970dbe0
Tags
adware stealer
score
6/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
6/10

SHA256

eb534ee3857c4d237e6214818b7d6d0bd72a5441a0d19e57202ed79b2970dbe0

Threat Level: Shows suspicious behavior

The file dd9b8a0ea2bf018dbd6f520008a668b1 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware stealer

Installs/modifies Browser Helper Object

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-25 08:52

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-25 08:52

Reported

2024-03-25 08:55

Platform

win10v2004-20231215-en

Max time kernel

138s

Max time network

146s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\dd9b8a0ea2bf018dbd6f520008a668b1.dll

Signatures

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\ C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dd9b8a0ea2bf018dbd6f520008a668b1.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\dd9b8a0ea2bf018dbd6f520008a668b1.TIEBHOCom C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\dd9b8a0ea2bf018dbd6f520008a668b1.TIEBHOCom\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\ C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\dd9b8a0ea2bf018dbd6f520008a668b1.TIEBHOCom\ C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\dd9b8a0ea2bf018dbd6f520008a668b1.TIEBHOCom\Clsid\ = "{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\ProgID\ = "dd9b8a0ea2bf018dbd6f520008a668b1.TIEBHOCom" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF} C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2188 wrote to memory of 1780 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2188 wrote to memory of 1780 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2188 wrote to memory of 1780 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\dd9b8a0ea2bf018dbd6f520008a668b1.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\dd9b8a0ea2bf018dbd6f520008a668b1.dll

Network

Country Destination Domain Proto
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 190.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 179.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 187.178.17.96.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-25 08:52

Reported

2024-03-25 08:55

Platform

win7-20240221-en

Max time kernel

120s

Max time network

120s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\dd9b8a0ea2bf018dbd6f520008a668b1.dll

Signatures

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\ C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\dd9b8a0ea2bf018dbd6f520008a668b1.TIEBHOCom\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dd9b8a0ea2bf018dbd6f520008a668b1.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\ C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\dd9b8a0ea2bf018dbd6f520008a668b1.TIEBHOCom C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\dd9b8a0ea2bf018dbd6f520008a668b1.TIEBHOCom\ C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\dd9b8a0ea2bf018dbd6f520008a668b1.TIEBHOCom\Clsid\ = "{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF}\ProgID\ = "dd9b8a0ea2bf018dbd6f520008a668b1.TIEBHOCom" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C74CDF30-68C2-49B4-9918-EBD66B8D9FBF} C:\Windows\SysWOW64\regsvr32.exe N/A

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\dd9b8a0ea2bf018dbd6f520008a668b1.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\dd9b8a0ea2bf018dbd6f520008a668b1.dll

Network

N/A

Files

memory/1740-0-0x0000000001D90000-0x0000000001E22000-memory.dmp