Malware Analysis Report

2024-09-11 16:50

Sample ID 240615-nt39cstajr
Target 0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe
SHA256 0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df
Tags
stealc vidar discovery spyware 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

0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df

Threat Level: Known bad

The file 0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Stealc

Vidar

Reads data files stored by FTP clients

Checks computer location settings

Checks installed software on the system

Suspicious use of SetThreadContext

Enumerates physical storage devices

Program crash

Checks processor information in registry

Delays execution with timeout.exe

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Unsecured Credentials
T1552
Credentials In Files
T1552.001
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Data from Local System
T1005
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-15 11:42

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 11:42

Reported

2024-06-15 11:44

Platform

win7-20240221-en

Max time kernel

122s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe"

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2868 wrote to memory of 1556 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\SysWOW64\WerFault.exe
PID 2868 wrote to memory of 1556 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\SysWOW64\WerFault.exe
PID 2868 wrote to memory of 1556 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\SysWOW64\WerFault.exe
PID 2868 wrote to memory of 1556 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe

"C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2868 -s 68

Network

N/A

Files

memory/2868-0-0x0000000000020000-0x0000000000021000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-15 11:42

Reported

2024-06-15 11:44

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe"

Signatures

Detect Vidar Stealer

stealer
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

Stealc

stealer stealc

Vidar

stealer vidar

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Reads data files stored by FTP clients

spyware stealer

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 936 set thread context of 4428 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Enumerates physical storage devices

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

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:\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 936 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 936 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 936 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 936 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 936 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 936 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 936 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 936 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 936 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4428 wrote to memory of 4544 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 4428 wrote to memory of 4544 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 4428 wrote to memory of 4544 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 4544 wrote to memory of 2164 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4544 wrote to memory of 2164 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4544 wrote to memory of 2164 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe

"C:\Users\Admin\AppData\Local\Temp\0d6494a16aec93bbf79227151adcb085328b2af646f5a65b17a98b7762cd77df.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" & rd /s /q "C:\ProgramData\BGDHDAFIDGDB" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 steamcommunity.com udp

Files

memory/936-1-0x0000000000F00000-0x0000000000F01000-memory.dmp

memory/4428-0-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4428-5-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4428-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4428-6-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4428-7-0x0000000000400000-0x0000000000648000-memory.dmp