Malware Analysis Report

2024-11-16 13:47

Sample ID 240628-y5h3ns1cnf
Target 23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f
SHA256 23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f
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

23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f

Threat Level: Known bad

The file 23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f 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 behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 20:22

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 20:22

Reported

2024-06-28 20:24

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat443D.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 1784 set thread context of 728 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat443D.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\kat443D.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat443D.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1784 wrote to memory of 728 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat443D.tmp
PID 1784 wrote to memory of 728 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat443D.tmp
PID 1784 wrote to memory of 728 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat443D.tmp
PID 1784 wrote to memory of 728 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat443D.tmp
PID 1784 wrote to memory of 728 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat443D.tmp
PID 1784 wrote to memory of 728 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat443D.tmp
PID 1784 wrote to memory of 728 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat443D.tmp
PID 1784 wrote to memory of 728 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat443D.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe

"C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe"

C:\Users\Admin\AppData\Local\Temp\kat443D.tmp

C:\Users\Admin\AppData\Local\Temp\kat443D.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
US 8.8.8.8:53 209.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
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
US 8.8.8.8:53 214.251.201.195.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 133.211.185.52.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 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 210.143.182.52.in-addr.arpa udp

Files

memory/1784-0-0x00000000007E0000-0x00000000007E1000-memory.dmp

memory/1784-1-0x00000000040A0000-0x00000000041B0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat443D.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/728-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/728-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1784-9-0x0000000000400000-0x0000000000635000-memory.dmp

memory/728-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/728-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/728-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/728-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/728-26-0x0000000020290000-0x00000000204EF000-memory.dmp

memory/728-41-0x0000000000400000-0x0000000000648000-memory.dmp

memory/728-42-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 20:22

Reported

2024-06-28 20:24

Platform

win11-20240508-en

Max time kernel

90s

Max time network

130s

Command Line

"C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.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
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\kat5EE9.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 1972 set thread context of 4304 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat5EE9.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\kat5EE9.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1972 wrote to memory of 4304 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp
PID 1972 wrote to memory of 4304 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp
PID 1972 wrote to memory of 4304 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp
PID 1972 wrote to memory of 4304 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp
PID 1972 wrote to memory of 4304 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp
PID 1972 wrote to memory of 4304 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp
PID 1972 wrote to memory of 4304 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp
PID 1972 wrote to memory of 4304 N/A C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe

"C:\Users\Admin\AppData\Local\Temp\23b305f8d65784e0e30ba06c713e87466036ab3f79b9403568720b0d0cbe099f.exe"

C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp

C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp

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 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 203.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 22.249.124.192.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

Files

memory/1972-0-0x0000000002390000-0x0000000002391000-memory.dmp

memory/1972-1-0x00000000040C0000-0x00000000041D0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat5EE9.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4304-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4304-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1972-10-0x0000000000400000-0x0000000000635000-memory.dmp

memory/4304-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4304-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4304-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4304-27-0x000000002F6C0000-0x000000002F91F000-memory.dmp

memory/4304-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4304-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4304-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4304-67-0x0000000000400000-0x0000000000648000-memory.dmp