Malware Analysis Report

2024-11-16 13:44

Sample ID 240607-rsjp4shf3s
Target 437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca
SHA256 437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca
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

437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca

Threat Level: Known bad

The file 437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Vidar

Stealc

Detect Vidar Stealer

Downloads MZ/PE file

Reads user/profile data of web browsers

Executes dropped EXE

Checks installed software on the system

Suspicious use of SetThreadContext

Unsigned PE

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-07 14:27

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-07 14:27

Reported

2024-06-07 14:29

Platform

win10v2004-20240426-en

Max time kernel

93s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.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\kat3B34.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 1836 set thread context of 3672 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1836 wrote to memory of 3672 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp
PID 1836 wrote to memory of 3672 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp
PID 1836 wrote to memory of 3672 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp
PID 1836 wrote to memory of 3672 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp
PID 1836 wrote to memory of 3672 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp
PID 1836 wrote to memory of 3672 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp
PID 1836 wrote to memory of 3672 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp
PID 1836 wrote to memory of 3672 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe

"C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe"

C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp

C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp

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 t.me udp
NL 149.154.167.99:443 t.me tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 129.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 18.190.202.116.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 tcp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/1836-0-0x0000000000930000-0x0000000000931000-memory.dmp

memory/1836-2-0x0000000002AC0000-0x0000000002C23000-memory.dmp

memory/1836-7-0x0000000000400000-0x000000000067A000-memory.dmp

memory/3672-9-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat3B34.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3672-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3672-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3672-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3672-14-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3672-31-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3672-16-0x000000001B720000-0x000000001B97F000-memory.dmp

memory/3672-32-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-07 14:27

Reported

2024-06-07 14:30

Platform

win11-20240508-en

Max time kernel

89s

Max time network

99s

Command Line

"C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.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\kat6021.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 5048 set thread context of 1356 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat6021.tmp

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat6021.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat6021.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat6021.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5048 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat6021.tmp
PID 5048 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat6021.tmp
PID 5048 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat6021.tmp
PID 5048 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat6021.tmp
PID 5048 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat6021.tmp
PID 5048 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat6021.tmp
PID 5048 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat6021.tmp
PID 5048 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe C:\Users\Admin\AppData\Local\Temp\kat6021.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe

"C:\Users\Admin\AppData\Local\Temp\437a1ca36e0f9222d6b8d7beea52270e6066d1f1341167d6143a5351115472ca.exe"

C:\Users\Admin\AppData\Local\Temp\kat6021.tmp

C:\Users\Admin\AppData\Local\Temp\kat6021.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 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp

Files

memory/5048-0-0x00000000024D0000-0x00000000024D1000-memory.dmp

memory/1356-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5048-9-0x0000000000400000-0x000000000067A000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat6021.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1356-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1356-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5048-1-0x0000000004150000-0x00000000042B3000-memory.dmp

memory/1356-15-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1356-16-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1356-18-0x0000000019410000-0x000000001966F000-memory.dmp

memory/1356-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1356-34-0x0000000000400000-0x0000000000648000-memory.dmp