Malware Analysis Report

2024-11-16 13:48

Sample ID 240628-yxys6atenr
Target a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913
SHA256 a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913
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: 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

a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913

Threat Level: Known bad

The file a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Vidar

Detect Vidar Stealer

Stealc

Downloads MZ/PE file

Executes dropped EXE

Reads user/profile data of web browsers

Checks installed software on the system

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 20:10

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 20:10

Reported

2024-06-28 20:13

Platform

win11-20240611-en

Max time kernel

91s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.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

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\kat6B2D.tmp N/A

Reads user/profile data of web browsers

spyware stealer

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3432 set thread context of 1476 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3432 wrote to memory of 1476 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp
PID 3432 wrote to memory of 1476 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp
PID 3432 wrote to memory of 1476 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp
PID 3432 wrote to memory of 1476 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp
PID 3432 wrote to memory of 1476 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp
PID 3432 wrote to memory of 1476 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp
PID 3432 wrote to memory of 1476 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp
PID 3432 wrote to memory of 1476 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe

"C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe"

C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp

C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 36.249.124.192.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 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

Files

memory/3432-0-0x0000000002380000-0x0000000002381000-memory.dmp

memory/3432-1-0x0000000002A30000-0x0000000002B40000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat6B2D.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1476-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3432-9-0x0000000000400000-0x0000000000635000-memory.dmp

memory/1476-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1476-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1476-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1476-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1476-28-0x0000000024D90000-0x0000000024FEF000-memory.dmp

memory/1476-35-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1476-36-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 20:10

Reported

2024-06-28 20:13

Platform

win10v2004-20240611-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.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

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\kat3E12.tmp N/A

Reads user/profile data of web browsers

spyware stealer

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3004 set thread context of 4296 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3004 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp
PID 3004 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp
PID 3004 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp
PID 3004 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp
PID 3004 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp
PID 3004 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp
PID 3004 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp
PID 3004 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe

"C:\Users\Admin\AppData\Local\Temp\a98a8132eea19ee50f1afa027fce52c089c9fe7238b06c88782d7c0efd81d913.exe"

C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp

C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
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 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 23.249.124.192.in-addr.arpa udp
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
US 8.8.8.8:53 249.197.17.2.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 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 95.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 58.99.105.20.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/3004-0-0x00000000007D0000-0x00000000007D1000-memory.dmp

memory/3004-1-0x0000000002A70000-0x0000000002B80000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat3E12.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4296-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4296-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3004-10-0x0000000000400000-0x0000000000635000-memory.dmp

memory/4296-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4296-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4296-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4296-25-0x0000000022780000-0x00000000229DF000-memory.dmp

memory/4296-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4296-34-0x0000000000400000-0x0000000000648000-memory.dmp