Malware Analysis Report

2025-08-11 01:44

Sample ID 230308-kpajpsee4s
Target 20230308_unpacked_gozi.bin.dll
SHA256 5bd64a7b018db5b4538d8077ad7a50871dc6c5682a1f151cc5e8a42673e4384f
Tags
isfb 7711 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

5bd64a7b018db5b4538d8077ad7a50871dc6c5682a1f151cc5e8a42673e4384f

Threat Level: Known bad

The file 20230308_unpacked_gozi.bin.dll was found to be: Known bad.

Malicious Activity Summary

isfb 7711 gozi

Gozi family

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-03-08 08:46

Signatures

Gozi family

gozi

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-08 08:46

Reported

2023-03-08 08:48

Platform

win7-20230220-en

Max time kernel

31s

Max time network

33s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\20230308_unpacked_gozi.bin.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1320 wrote to memory of 1544 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1320 wrote to memory of 1544 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1320 wrote to memory of 1544 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1320 wrote to memory of 1544 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1320 wrote to memory of 1544 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1320 wrote to memory of 1544 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1320 wrote to memory of 1544 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\20230308_unpacked_gozi.bin.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\20230308_unpacked_gozi.bin.dll,#1

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-03-08 08:46

Reported

2023-03-08 08:48

Platform

win10v2004-20230220-en

Max time kernel

85s

Max time network

140s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\20230308_unpacked_gozi.bin.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4232 wrote to memory of 1532 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4232 wrote to memory of 1532 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4232 wrote to memory of 1532 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\20230308_unpacked_gozi.bin.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\20230308_unpacked_gozi.bin.dll,#1

Network

Country Destination Domain Proto
US 209.197.3.8:80 tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 76.38.195.152.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 20.42.73.25:443 tcp
NL 173.223.113.164:443 tcp
US 8.8.8.8:53 234.238.32.23.in-addr.arpa udp
US 209.197.3.8:80 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp

Files

N/A