Malware Analysis Report

2024-10-23 16:34

Sample ID 220830-b2s25sbaa9
Target 39b5e611639ff7e2fd0358ff9a332db688c295a2804f156394226712326294bf
SHA256 39b5e611639ff7e2fd0358ff9a332db688c295a2804f156394226712326294bf
Tags
ytstealer spyware stealer upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

39b5e611639ff7e2fd0358ff9a332db688c295a2804f156394226712326294bf

Threat Level: Known bad

The file 39b5e611639ff7e2fd0358ff9a332db688c295a2804f156394226712326294bf was found to be: Known bad.

Malicious Activity Summary

ytstealer spyware stealer upx

YTStealer

YTStealer payload

UPX packed file

Reads user/profile data of web browsers

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-08-30 01:38

Signatures

UPX packed file

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

Analysis: behavioral1

Detonation Overview

Submitted

2022-08-30 01:38

Reported

2022-08-30 01:43

Platform

win7-20220812-en

Max time kernel

43s

Max time network

46s

Command Line

"C:\Users\Admin\AppData\Local\Temp\39b5e611639ff7e2fd0358ff9a332db688c295a2804f156394226712326294bf.exe"

Signatures

YTStealer

stealer ytstealer

YTStealer payload

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

UPX packed file

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

Reads user/profile data of web browsers

spyware stealer

Processes

C:\Users\Admin\AppData\Local\Temp\39b5e611639ff7e2fd0358ff9a332db688c295a2804f156394226712326294bf.exe

"C:\Users\Admin\AppData\Local\Temp\39b5e611639ff7e2fd0358ff9a332db688c295a2804f156394226712326294bf.exe"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /C choice /C Y /N /D Y /T 0 &Del C:\Users\Admin\AppData\Local\Temp\39b5e611639ff7e2fd0358ff9a332db688c295a2804f156394226712326294bf.exe

C:\Windows\system32\choice.exe

choice /C Y /N /D Y /T 0

Network

N/A

Files

memory/1948-54-0x00000000000A0000-0x0000000000E69000-memory.dmp

memory/700-55-0x0000000000000000-mapping.dmp

memory/1172-56-0x0000000000000000-mapping.dmp

memory/1948-57-0x00000000000A0000-0x0000000000E69000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-08-30 01:38

Reported

2022-08-30 01:43

Platform

win10-20220812-en

Max time kernel

2s

Command Line

"C:\Users\Admin\AppData\Local\Temp\39b5e611639ff7e2fd0358ff9a332db688c295a2804f156394226712326294bf.exe"

Signatures

UPX packed file

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

Processes

C:\Users\Admin\AppData\Local\Temp\39b5e611639ff7e2fd0358ff9a332db688c295a2804f156394226712326294bf.exe

"C:\Users\Admin\AppData\Local\Temp\39b5e611639ff7e2fd0358ff9a332db688c295a2804f156394226712326294bf.exe"

Network

N/A

Files

memory/1584-120-0x0000000000F60000-0x0000000001D29000-memory.dmp