Malware Analysis Report

2025-08-05 14:09

Sample ID 230821-pnqazsee4z
Target 4545.dll
SHA256 9b85fbfa3892a7a6deffba5d5bc5dd9c35ac6cb97a631752142faa0839423186
Tags
score
6/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
6/10

SHA256

9b85fbfa3892a7a6deffba5d5bc5dd9c35ac6cb97a631752142faa0839423186

Threat Level: Shows suspicious behavior

The file 4545.dll was found to be: Shows suspicious behavior.

Malicious Activity Summary


Looks up external IP address via web service

Unsigned PE

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-08-21 12:28

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-21 12:28

Reported

2023-08-21 12:31

Platform

win7-20230712-en

Max time kernel

122s

Max time network

125s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4545.dll

Signatures

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3016 wrote to memory of 2020 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\notepad.exe
PID 3016 wrote to memory of 2020 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\notepad.exe
PID 3016 wrote to memory of 2020 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\notepad.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4545.dll

C:\Windows\system32\notepad.exe

notepad.exe

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-21 12:28

Reported

2023-08-21 12:31

Platform

win10v2004-20230703-en

Max time kernel

150s

Max time network

153s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4545.dll

Signatures

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 996 wrote to memory of 1644 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\notepad.exe
PID 996 wrote to memory of 1644 N/A C:\Windows\system32\regsvr32.exe C:\Windows\system32\notepad.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4545.dll

C:\Windows\system32\notepad.exe

notepad.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
SG 139.99.32.95:8888 tcp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
SG 139.99.32.95:8888 tcp
US 8.8.8.8:53 254.135.241.8.in-addr.arpa udp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
US 8.8.8.8:53 45.8.109.52.in-addr.arpa udp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp
US 8.8.8.8:53 122.10.44.20.in-addr.arpa udp
SG 139.99.32.95:8888 tcp
SG 139.99.32.95:8888 tcp

Files

memory/996-133-0x00007FF819190000-0x00007FF819385000-memory.dmp

memory/996-135-0x0000000002B10000-0x0000000002B62000-memory.dmp

memory/996-136-0x00007FFFFAD90000-0x00007FFFFB851000-memory.dmp

memory/996-137-0x0000000002F90000-0x0000000002FA0000-memory.dmp

memory/996-138-0x0000000002F90000-0x0000000002FA0000-memory.dmp

memory/996-139-0x0000000002F90000-0x0000000002FA0000-memory.dmp

memory/996-140-0x000000001BF70000-0x000000001BF82000-memory.dmp

memory/996-141-0x000000001C210000-0x000000001C24C000-memory.dmp

memory/996-142-0x00007FFFFAD90000-0x00007FFFFB851000-memory.dmp

memory/996-144-0x0000000002F90000-0x0000000002FA0000-memory.dmp

memory/996-145-0x0000000002F90000-0x0000000002FA0000-memory.dmp

memory/996-146-0x0000000002F90000-0x0000000002FA0000-memory.dmp