Malware Analysis Report

2024-09-22 07:45

Sample ID 240604-sfl55sbf25
Target c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe
SHA256 c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871
Tags
stealc default discovery stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871

Threat Level: Known bad

The file c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe was found to be: Known bad.

Malicious Activity Summary

stealc default discovery stealer

Stealc

Checks installed software on the system

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-04 15:04

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-04 15:04

Reported

2024-06-04 15:06

Platform

win7-20240221-en

Max time kernel

117s

Max time network

117s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe

"C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3016 -s 52

Network

N/A

Files

memory/3016-0-0x0000000000020000-0x0000000000021000-memory.dmp

memory/3016-1-0x0000000000020000-0x0000000000021000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-04 15:04

Reported

2024-06-04 15:06

Platform

win10v2004-20240426-en

Max time kernel

112s

Max time network

101s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe"

Signatures

Stealc

stealer stealc

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1112 set thread context of 1116 N/A C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1112 wrote to memory of 1116 N/A C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1112 wrote to memory of 1116 N/A C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1112 wrote to memory of 1116 N/A C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1112 wrote to memory of 1116 N/A C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1112 wrote to memory of 1116 N/A C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1112 wrote to memory of 1116 N/A C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1112 wrote to memory of 1116 N/A C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1112 wrote to memory of 1116 N/A C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1112 wrote to memory of 1116 N/A C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe

"C:\Users\Admin\AppData\Local\Temp\c2dd30a33e7631b1d32f8a8864c9fa7e45c16657a9593ea42c109cc34f208871.exe"

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 1116 -ip 1116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1116 -s 1128

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
RU 147.45.47.150:80 tcp
US 8.8.8.8:53 224.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 3.181.190.20.in-addr.arpa udp
RU 147.45.47.150:80 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
RU 147.45.47.150:80 tcp
US 8.8.8.8:53 138.107.17.2.in-addr.arpa udp
RU 147.45.47.150:80 tcp
RU 147.45.47.150:80 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 225.107.17.2.in-addr.arpa udp

Files

memory/1112-0-0x0000000000E60000-0x0000000000E61000-memory.dmp

memory/1112-1-0x0000000000E60000-0x0000000000E61000-memory.dmp

memory/1112-3-0x0000000000E60000-0x0000000000E61000-memory.dmp

memory/1116-2-0x0000000000400000-0x000000000063B000-memory.dmp

memory/1116-5-0x0000000000400000-0x000000000063B000-memory.dmp

memory/1116-6-0x0000000000400000-0x000000000063B000-memory.dmp

memory/1116-7-0x0000000000400000-0x000000000063B000-memory.dmp

memory/1116-8-0x0000000000400000-0x000000000063B000-memory.dmp