Malware Analysis Report

2025-08-05 21:39

Sample ID 230321-m9kxaahh82
Target gozi.payload-disk
SHA256 c43b5d3f736b3f86f0603f8f4afca144a5118c8d1a987df461378ce8cfd20036
Tags
isfb 5050 gozi
score
10/10

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
10/10

SHA256

c43b5d3f736b3f86f0603f8f4afca144a5118c8d1a987df461378ce8cfd20036

Threat Level: Known bad

The file gozi.payload-disk was found to be: Known bad.

Malicious Activity Summary

isfb 5050 gozi

Gozi family

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-03-21 11:09

Signatures

Gozi family

gozi

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-21 11:09

Reported

2023-03-21 11:12

Platform

win7-20230220-en

Max time kernel

31s

Max time network

33s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\gozi.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1720 wrote to memory of 1640 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1720 wrote to memory of 1640 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1720 wrote to memory of 1640 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1720 wrote to memory of 1640 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1720 wrote to memory of 1640 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1720 wrote to memory of 1640 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1720 wrote to memory of 1640 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\gozi.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\gozi.dll,#1

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-03-21 11:09

Reported

2023-03-21 11:12

Platform

win10v2004-20230221-en

Max time kernel

135s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\gozi.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4100 wrote to memory of 2968 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4100 wrote to memory of 2968 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4100 wrote to memory of 2968 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\gozi.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\gozi.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 11.175.53.84.in-addr.arpa udp
US 8.8.8.8:53 141.145.190.20.in-addr.arpa udp
US 52.152.110.14:443 tcp
IE 20.50.73.9:443 tcp
US 8.8.8.8:53 58.104.205.20.in-addr.arpa udp
US 8.8.8.8:53 202.74.101.95.in-addr.arpa udp
US 52.152.110.14:443 tcp
US 8.8.8.8:53 62.13.109.52.in-addr.arpa udp
US 8.248.3.254:80 tcp
US 52.152.110.14:443 tcp
US 8.248.3.254:80 tcp
US 52.152.110.14:443 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp

Files

N/A