Malware Analysis Report

2025-08-11 01:11

Sample ID 231006-1f4zysac77
Target 9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6
SHA256 9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6
Tags
mystic stealer
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 Overview

score
10/10

SHA256

9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6

Threat Level: Known bad

The file 9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6 was found to be: Known bad.

Malicious Activity Summary

mystic stealer

Detect Mystic stealer payload

Mystic

Suspicious use of SetThreadContext

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-10-06 21:36

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-06 21:36

Reported

2023-10-06 21:39

Platform

win10-20230915-en

Max time kernel

126s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe"

Signatures

Detect Mystic stealer payload

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

Mystic

stealer mystic

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4604 set thread context of 3800 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4604 wrote to memory of 4520 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 4520 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 4520 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 3800 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 3800 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 3800 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 3800 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 3800 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 3800 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 3800 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 3800 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 3800 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4604 wrote to memory of 3800 N/A C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

Processes

C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe

"C:\Users\Admin\AppData\Local\Temp\9c48b66a8f2c5f41305994fb9d1af129db5a9d1438eaff4cb7e73a777bf5d3d6.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4604 -s 340

Network

Country Destination Domain Proto
RU 5.42.92.211:80 5.42.92.211 tcp
US 8.8.8.8:53 211.92.42.5.in-addr.arpa udp
US 8.8.8.8:53 80.121.18.2.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 15.173.189.20.in-addr.arpa udp

Files

memory/3800-0-0x0000000000400000-0x0000000000428000-memory.dmp

memory/3800-3-0x0000000000400000-0x0000000000428000-memory.dmp

memory/3800-4-0x0000000000400000-0x0000000000428000-memory.dmp

memory/3800-5-0x0000000000400000-0x0000000000428000-memory.dmp

memory/3800-6-0x0000000000400000-0x0000000000428000-memory.dmp