Malware Analysis Report

2025-03-15 07:46

Sample ID 240204-qkh8yaafa4
Target 8f3fc3cecfff3f90b7977bb3a631a095
SHA256 159bf427bf2f60064bbfbc798bef9030902036d9e6da2c442e7836aeb115c829
Tags
gozi 2500 banker isfb trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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
10/10

SHA256

159bf427bf2f60064bbfbc798bef9030902036d9e6da2c442e7836aeb115c829

Threat Level: Known bad

The file 8f3fc3cecfff3f90b7977bb3a631a095 was found to be: Known bad.

Malicious Activity Summary

gozi 2500 banker isfb trojan

Gozi

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-02-04 13:19

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-04 13:19

Reported

2024-02-04 13:21

Platform

win10v2004-20231215-en

Max time kernel

143s

Max time network

144s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\8f3fc3cecfff3f90b7977bb3a631a095.dll,#1

Signatures

Gozi

banker trojan gozi

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1596 wrote to memory of 1388 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1596 wrote to memory of 1388 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1596 wrote to memory of 1388 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\8f3fc3cecfff3f90b7977bb3a631a095.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\8f3fc3cecfff3f90b7977bb3a631a095.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 gtr.antoinfer.com udp
US 8.8.8.8:53 app.bighomegl.at udp
US 8.8.8.8:53 gtr.antoinfer.com udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 app.bighomegl.at udp
US 8.8.8.8:53 gtr.antoinfer.com udp
US 8.8.8.8:53 app.bighomegl.at udp
US 8.8.8.8:53 15.173.189.20.in-addr.arpa udp

Files

memory/1388-0-0x0000000074DC0000-0x0000000074E11000-memory.dmp

memory/1388-1-0x0000000001110000-0x0000000001111000-memory.dmp

memory/1388-2-0x0000000074DC0000-0x0000000074E11000-memory.dmp

memory/1388-3-0x0000000074DC0000-0x0000000074E11000-memory.dmp

memory/1388-4-0x0000000001480000-0x000000000148D000-memory.dmp

memory/1388-7-0x0000000074DC0000-0x0000000074E11000-memory.dmp

memory/1388-9-0x0000000001110000-0x0000000001111000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-04 13:19

Reported

2024-02-04 13:21

Platform

win7-20231215-en

Max time kernel

140s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\8f3fc3cecfff3f90b7977bb3a631a095.dll,#1

Signatures

Gozi

banker trojan gozi

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2092 wrote to memory of 2284 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2284 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2284 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2284 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2284 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2284 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2284 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\8f3fc3cecfff3f90b7977bb3a631a095.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\8f3fc3cecfff3f90b7977bb3a631a095.dll,#1

Network

N/A

Files

memory/2284-0-0x0000000074B50000-0x0000000074BA1000-memory.dmp

memory/2284-1-0x0000000074B50000-0x0000000074BA1000-memory.dmp

memory/2284-2-0x0000000000200000-0x0000000000201000-memory.dmp

memory/2284-3-0x0000000074B50000-0x0000000074BA1000-memory.dmp

memory/2284-4-0x0000000000230000-0x000000000023D000-memory.dmp

memory/2284-7-0x0000000074B50000-0x0000000074BA1000-memory.dmp