Malware Analysis Report

2024-09-11 16:28

Sample ID 240613-2v69astfpc
Target 56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495
SHA256 56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495
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

56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495

Threat Level: Known bad

The file 56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495 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

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

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Checks processor information in registry

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

2024-06-13 22:55

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 22:55

Reported

2024-06-13 23:00

Platform

win7-20240221-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe"

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3024 wrote to memory of 2028 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\SysWOW64\WerFault.exe
PID 3024 wrote to memory of 2028 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\SysWOW64\WerFault.exe
PID 3024 wrote to memory of 2028 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\SysWOW64\WerFault.exe
PID 3024 wrote to memory of 2028 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe

"C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3024 -s 148

Network

N/A

Files

memory/3024-0-0x0000000000080000-0x0000000000081000-memory.dmp

memory/3024-1-0x0000000000080000-0x0000000000081000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 22:55

Reported

2024-06-13 23:00

Platform

win10-20240404-en

Max time kernel

195s

Max time network

300s

Command Line

"C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.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
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

Downloads MZ/PE file

Reads data files stored by FTP 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 3936 set thread context of 4796 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.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 3936 wrote to memory of 4796 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3936 wrote to memory of 4796 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3936 wrote to memory of 4796 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3936 wrote to memory of 4796 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3936 wrote to memory of 4796 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3936 wrote to memory of 4796 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3936 wrote to memory of 4796 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3936 wrote to memory of 4796 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3936 wrote to memory of 4796 N/A C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4796 wrote to memory of 4112 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 4796 wrote to memory of 4112 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 4796 wrote to memory of 4112 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 4112 wrote to memory of 596 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4112 wrote to memory of 596 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4112 wrote to memory of 596 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe

"C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.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\BKEBFHIJECFI" & 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 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 244.235.13.49.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
DE 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 tcp
DE 49.13.235.244:5432 tcp
DE 49.13.235.244:5432 tcp
DE 49.13.235.244:5432 tcp
DE 49.13.235.244:5432 tcp
DE 49.13.235.244:5432 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
DE 49.13.235.244:5432 49.13.235.244 tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 14.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/3936-0-0x0000000001320000-0x0000000001321000-memory.dmp

memory/3936-1-0x0000000001320000-0x0000000001321000-memory.dmp

memory/3936-3-0x0000000001320000-0x0000000001321000-memory.dmp

memory/4796-2-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4796-5-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4796-7-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4796-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4796-14-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4796-16-0x0000000019440000-0x000000001969F000-memory.dmp

memory/4796-27-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4796-28-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4796-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4796-44-0x0000000000400000-0x0000000000648000-memory.dmp