Malware Analysis Report

2024-09-11 16:51

Sample ID 240615-vhdmwsxhjb
Target file.exe
SHA256 48bc1d427c46a8e213d03ce347162f3fd2076766ddff3e70bd52b95f967e8e49
Tags
stealc vidar discovery spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

48bc1d427c46a8e213d03ce347162f3fd2076766ddff3e70bd52b95f967e8e49

Threat Level: Known bad

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

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Vidar

Stealc

Downloads MZ/PE file

Reads user/profile data of web browsers

Reads data files stored by FTP clients

Reads user/profile data of local email clients

Checks computer location settings

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

Delays execution with timeout.exe

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 16:59

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-15 16:59

Reported

2024-06-15 17:01

Platform

win10v2004-20240611-en

Max time kernel

149s

Max time network

156s

Command Line

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

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
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Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\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

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1560 set thread context of 2020 N/A C:\Users\Admin\AppData\Local\Temp\file.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
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 1560 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1560 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1560 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1560 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1560 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1560 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1560 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1560 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1560 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2020 wrote to memory of 3936 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 2020 wrote to memory of 3936 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 2020 wrote to memory of 3936 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 3936 wrote to memory of 3432 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3936 wrote to memory of 3432 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3936 wrote to memory of 3432 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

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

"C:\Users\Admin\AppData\Local\Temp\file.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 & rd /s /q "C:\ProgramData\FHCAEGCBFHJD" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 58.251.201.195.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 145.83.221.88.in-addr.arpa udp
BE 88.221.83.232:443 www.bing.com tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 232.83.221.88.in-addr.arpa udp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
DE 195.201.251.58:9000 195.201.251.58 tcp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 142.53.16.96.in-addr.arpa udp
US 8.8.8.8:53 100.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 105.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 123.10.44.20.in-addr.arpa udp

Files

memory/1560-0-0x0000000000790000-0x0000000000791000-memory.dmp

memory/2020-1-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-5-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-6-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-7-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-9-0x000000001B3B0000-0x000000001B60F000-memory.dmp

memory/2020-17-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-18-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-26-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-27-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-44-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-58-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2020-59-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 16:59

Reported

2024-06-15 17:01

Platform

win7-20231129-en

Max time kernel

119s

Max time network

121s

Command Line

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

Signatures

Program crash

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2220 wrote to memory of 2188 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe
PID 2220 wrote to memory of 2188 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe
PID 2220 wrote to memory of 2188 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe
PID 2220 wrote to memory of 2188 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe

Processes

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2220 -s 48

Network

N/A

Files

memory/2220-0-0x0000000000020000-0x0000000000021000-memory.dmp