Malware Analysis Report

2025-03-15 03:55

Sample ID 230902-pb5j5sda97
Target JC_b03028acf3fa7be8b588c8e208c3b9bf3c63ecf3f4708e2a16856303218fbf7c
SHA256 b03028acf3fa7be8b588c8e208c3b9bf3c63ecf3f4708e2a16856303218fbf7c
Tags
rat infostealer fatalrat
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

b03028acf3fa7be8b588c8e208c3b9bf3c63ecf3f4708e2a16856303218fbf7c

Threat Level: Known bad

The file JC_b03028acf3fa7be8b588c8e208c3b9bf3c63ecf3f4708e2a16856303218fbf7c was found to be: Known bad.

Malicious Activity Summary

rat infostealer fatalrat

Fatal Rat payload

Fatalrat family

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-09-02 12:10

Signatures

Fatal Rat payload

rat infostealer
Description Indicator Process Target
N/A N/A N/A N/A

Fatalrat family

fatalrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-02 12:10

Reported

2023-09-02 12:12

Platform

win7-20230831-en

Max time kernel

122s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JC_b03028acf3fa7be8b588c8e208c3b9bf3c63ecf3f4708e2a16856303218fbf7c.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\JC_b03028acf3fa7be8b588c8e208c3b9bf3c63ecf3f4708e2a16856303218fbf7c.exe

"C:\Users\Admin\AppData\Local\Temp\JC_b03028acf3fa7be8b588c8e208c3b9bf3c63ecf3f4708e2a16856303218fbf7c.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2044 -s 196

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-02 12:10

Reported

2023-09-02 12:12

Platform

win10v2004-20230831-en

Max time kernel

140s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JC_b03028acf3fa7be8b588c8e208c3b9bf3c63ecf3f4708e2a16856303218fbf7c.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\JC_b03028acf3fa7be8b588c8e208c3b9bf3c63ecf3f4708e2a16856303218fbf7c.exe

"C:\Users\Admin\AppData\Local\Temp\JC_b03028acf3fa7be8b588c8e208c3b9bf3c63ecf3f4708e2a16856303218fbf7c.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4288 -ip 4288

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4288 -s 512

Network

Country Destination Domain Proto
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 126.21.238.8.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 224.162.46.104.in-addr.arpa udp

Files

N/A