Malware Analysis Report

2024-12-07 19:08

Sample ID 241114-cyqy2swrdn
Target 5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe
SHA256 5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319
Tags
stealc default9_cap credential_access discovery spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319

Threat Level: Known bad

The file 5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe was found to be: Known bad.

Malicious Activity Summary

stealc default9_cap credential_access discovery spyware stealer

Stealc

Stealc family

Reads data files stored by FTP clients

Deletes itself

Checks computer location settings

Unsecured Credentials: Credentials In Files

Checks installed software on the system

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-14 02:29

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-14 02:29

Reported

2024-11-14 02:31

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

97s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe"

Signatures

Stealc

stealer stealc

Stealc family

stealc

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe N/A

Reads data files stored by FTP clients

spyware stealer

Unsecured Credentials: Credentials In Files

credential_access stealer

Checks installed software on the system

discovery

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\timeout.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe

"C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe" & del "C:\ProgramData\*.dll"" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 5

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2492 -ip 2492

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2492 -s 1464

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
RU 62.204.41.177:80 62.204.41.177 tcp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 177.41.204.62.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/2492-1-0x0000000002BA0000-0x0000000002CA0000-memory.dmp

memory/2492-2-0x0000000004790000-0x00000000047DE000-memory.dmp

memory/2492-3-0x0000000000400000-0x0000000000661000-memory.dmp

memory/2492-6-0x0000000000400000-0x0000000000661000-memory.dmp

memory/2492-5-0x0000000004790000-0x00000000047DE000-memory.dmp

memory/2492-4-0x0000000000400000-0x0000000002B75000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-14 02:29

Reported

2024-11-14 02:31

Platform

win7-20240729-en

Max time kernel

16s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe"

Signatures

Stealc

stealer stealc

Stealc family

stealc

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Reads data files stored by FTP clients

spyware stealer

Unsecured Credentials: Credentials In Files

credential_access stealer

Checks installed software on the system

discovery

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\timeout.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe

"C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5a134a9d053be5eeaaeb699bc9bc733e78e36114d8e1fe837efe86512a14d319N.exe" & del "C:\ProgramData\*.dll"" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 5

Network

Country Destination Domain Proto
RU 62.204.41.177:80 62.204.41.177 tcp

Files

memory/1656-1-0x0000000002C70000-0x0000000002D70000-memory.dmp

memory/1656-2-0x0000000000400000-0x0000000000661000-memory.dmp

memory/1656-3-0x0000000000400000-0x0000000002B75000-memory.dmp

memory/1656-4-0x0000000000400000-0x0000000002B75000-memory.dmp

memory/1656-5-0x0000000000400000-0x0000000000661000-memory.dmp