Malware Analysis Report

2024-11-16 13:50

Sample ID 240628-d58ywasaml
Target fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3
SHA256 fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3
Tags
stealc vidar discovery spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3

Threat Level: Known bad

The file fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Vidar

Stealc

Reads data files stored by FTP clients

Executes dropped EXE

Checks computer location settings

Checks installed software on the system

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Checks processor information in registry

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 03:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 03:36

Reported

2024-06-28 03:39

Platform

win10v2004-20240508-en

Max time kernel

41s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
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Stealc

stealer stealc

Vidar

stealer vidar

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat470B.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat470B.tmp 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 4600 set thread context of 3500 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat470B.tmp

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat470B.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat470B.tmp N/A

Delays execution with timeout.exe

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4600 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat470B.tmp
PID 4600 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat470B.tmp
PID 4600 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat470B.tmp
PID 4600 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat470B.tmp
PID 4600 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat470B.tmp
PID 4600 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat470B.tmp
PID 4600 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat470B.tmp
PID 4600 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat470B.tmp
PID 3500 wrote to memory of 1404 N/A C:\Users\Admin\AppData\Local\Temp\kat470B.tmp C:\Windows\SysWOW64\cmd.exe
PID 3500 wrote to memory of 1404 N/A C:\Users\Admin\AppData\Local\Temp\kat470B.tmp C:\Windows\SysWOW64\cmd.exe
PID 3500 wrote to memory of 1404 N/A C:\Users\Admin\AppData\Local\Temp\kat470B.tmp C:\Windows\SysWOW64\cmd.exe
PID 1404 wrote to memory of 4704 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1404 wrote to memory of 4704 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1404 wrote to memory of 4704 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe

"C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe"

C:\Users\Admin\AppData\Local\Temp\kat470B.tmp

C:\Users\Admin\AppData\Local\Temp\kat470B.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat470B.tmp" & rd /s /q "C:\ProgramData\BGIIDAEBGCAA" & 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 steamcommunity.com udp
US 8.8.8.8:53 tea.arpdabl.org udp

Files

memory/4600-0-0x0000000000730000-0x0000000000731000-memory.dmp

memory/4600-1-0x0000000004040000-0x0000000004150000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat470B.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3500-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3500-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4600-9-0x0000000000400000-0x000000000058E000-memory.dmp

memory/3500-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3500-11-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3500-12-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3500-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3500-14-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3500-15-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 03:36

Reported

2024-06-28 03:39

Platform

win11-20240508-en

Max time kernel

146s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
N/A N/A N/A N/A
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Stealc

stealer stealc

Vidar

stealer vidar

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp 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 1548 set thread context of 2792 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp N/A

Delays execution with timeout.exe

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1548 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp
PID 1548 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp
PID 1548 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp
PID 1548 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp
PID 1548 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp
PID 1548 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp
PID 1548 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp
PID 1548 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp
PID 2792 wrote to memory of 420 N/A C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp C:\Windows\SysWOW64\cmd.exe
PID 2792 wrote to memory of 420 N/A C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp C:\Windows\SysWOW64\cmd.exe
PID 2792 wrote to memory of 420 N/A C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp C:\Windows\SysWOW64\cmd.exe
PID 420 wrote to memory of 3104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 420 wrote to memory of 3104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 420 wrote to memory of 3104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe

"C:\Users\Admin\AppData\Local\Temp\fe35cc93ffa8ef0801847449c1a0047da244da6995b1bfd22719e8a0ea63d3e3.exe"

C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp

C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp" & rd /s /q "C:\ProgramData\FCGIJDBAFCBA" & 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 steamcommunity.com udp
US 8.8.8.8:53 tea.arpdabl.org udp
IE 52.111.236.22:443 tcp

Files

memory/1548-0-0x00000000023C0000-0x00000000023C1000-memory.dmp

memory/1548-1-0x0000000003FB0000-0x00000000040C0000-memory.dmp

memory/2792-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat7B4A.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1548-9-0x0000000000400000-0x000000000058E000-memory.dmp

memory/2792-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2792-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2792-11-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2792-12-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2792-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2792-14-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2792-17-0x0000000000400000-0x0000000000648000-memory.dmp