Malware Analysis Report

2024-11-16 13:50

Sample ID 240628-bmeafavhlr
Target 8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e
SHA256 8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e
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

8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e

Threat Level: Known bad

The file 8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Stealc

Vidar

Downloads MZ/PE file

Checks computer location settings

Reads user/profile data of web browsers

Reads data files stored by FTP clients

Executes dropped EXE

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Delays execution with timeout.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 01:15

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 01:15

Reported

2024-06-28 01:17

Platform

win10v2004-20240611-en

Max time kernel

134s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.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:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp N/A

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 4300 set thread context of 4808 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat8F5F.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\kat8F5F.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat8F5F.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 4300 wrote to memory of 4808 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp
PID 4300 wrote to memory of 4808 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp
PID 4300 wrote to memory of 4808 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp
PID 4300 wrote to memory of 4808 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp
PID 4300 wrote to memory of 4808 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp
PID 4300 wrote to memory of 4808 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp
PID 4300 wrote to memory of 4808 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp
PID 4300 wrote to memory of 4808 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp
PID 4808 wrote to memory of 4964 N/A C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp C:\Windows\SysWOW64\cmd.exe
PID 4808 wrote to memory of 4964 N/A C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp C:\Windows\SysWOW64\cmd.exe
PID 4808 wrote to memory of 4964 N/A C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp C:\Windows\SysWOW64\cmd.exe
PID 4964 wrote to memory of 3648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4964 wrote to memory of 3648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4964 wrote to memory of 3648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe

"C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe"

C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp

C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp" & rd /s /q "C:\ProgramData\HCFIIIJJKJKF" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 41.249.124.192.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 214.251.201.195.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 tea.arpdabl.org udp
DE 207.180.253.128:80 tea.arpdabl.org tcp
US 8.8.8.8:53 128.253.180.207.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/4300-0-0x00000000022F0000-0x00000000022F1000-memory.dmp

memory/4300-2-0x0000000002910000-0x0000000002A20000-memory.dmp

memory/4808-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4300-10-0x0000000000400000-0x000000000058E000-memory.dmp

memory/4808-9-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat8F5F.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4808-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-26-0x0000000024C00000-0x0000000024E5F000-memory.dmp

memory/4808-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-34-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-67-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-74-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 01:15

Reported

2024-06-28 01:17

Platform

win11-20240611-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
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Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp N/A

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 1220 set thread context of 4640 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat4EBC.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\kat4EBC.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat4EBC.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 1220 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp
PID 1220 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp
PID 1220 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp
PID 1220 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp
PID 1220 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp
PID 1220 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp
PID 1220 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp
PID 1220 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp
PID 4640 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp C:\Windows\SysWOW64\cmd.exe
PID 4640 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp C:\Windows\SysWOW64\cmd.exe
PID 4640 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp C:\Windows\SysWOW64\cmd.exe
PID 2396 wrote to memory of 2852 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2396 wrote to memory of 2852 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2396 wrote to memory of 2852 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe

"C:\Users\Admin\AppData\Local\Temp\8f74ad5c50ab8727fbe4bc726e903f5a19f13a10e7e937689e8e27b8c036be0e.exe"

C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp

C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp" & rd /s /q "C:\ProgramData\DAKFIDHDGIEG" & 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 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 24.249.124.192.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 207.180.253.128:80 tea.arpdabl.org tcp
NL 52.111.243.30:443 tcp

Files

memory/1220-0-0x00000000023F0000-0x00000000023F1000-memory.dmp

memory/1220-1-0x0000000002980000-0x0000000002A90000-memory.dmp

memory/4640-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4EBC.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4640-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1220-10-0x0000000000400000-0x000000000058E000-memory.dmp

memory/4640-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-27-0x000000002F720000-0x000000002F97F000-memory.dmp

memory/4640-35-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-36-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-44-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-45-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-61-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-62-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-74-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-75-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4640-78-0x0000000000400000-0x0000000000648000-memory.dmp