Malware Analysis Report

2024-11-15 06:40

Sample ID 240603-k1yexahf9v
Target f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61
SHA256 f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61
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

f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61

Threat Level: Known bad

The file f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Stealc

Vidar

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

2024-06-03 09:04

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 09:04

Reported

2024-06-03 09:07

Platform

win10v2004-20240426-en

Max time kernel

88s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.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\kat5A74.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 4844 set thread context of 4660 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat5A74.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\kat5A74.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4844 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp
PID 4844 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp
PID 4844 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp
PID 4844 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp
PID 4844 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp
PID 4844 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp
PID 4844 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp
PID 4844 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe

"C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe"

C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp

C:\Users\Admin\AppData\Local\Temp\kat5A74.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 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 36.249.124.192.in-addr.arpa udp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 245.158.13.49.in-addr.arpa udp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/4844-0-0x0000000000990000-0x0000000000991000-memory.dmp

memory/4844-2-0x0000000003C60000-0x0000000003DAC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat5A74.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4660-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4660-10-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4844-9-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/4660-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4660-22-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4660-23-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4660-25-0x000000001DBD0000-0x000000001DE2F000-memory.dmp

memory/4660-40-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4660-41-0x0000000000400000-0x0000000000649000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 09:04

Reported

2024-06-03 09:07

Platform

win11-20240508-en

Max time kernel

105s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.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\kat9451.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 4176 set thread context of 1536 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat9451.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\kat9451.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat9451.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat9451.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4176 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat9451.tmp
PID 4176 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat9451.tmp
PID 4176 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat9451.tmp
PID 4176 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat9451.tmp
PID 4176 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat9451.tmp
PID 4176 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat9451.tmp
PID 4176 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat9451.tmp
PID 4176 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe C:\Users\Admin\AppData\Local\Temp\kat9451.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe

"C:\Users\Admin\AppData\Local\Temp\f475183e91015042fe85c44ea580c31b97dc8e79dc9a53e25fc6f4fd8a7cbb61.exe"

C:\Users\Admin\AppData\Local\Temp\kat9451.tmp

C:\Users\Admin\AppData\Local\Temp\kat9451.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
NL 149.154.167.99:443 t.me tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/4176-0-0x0000000002430000-0x0000000002431000-memory.dmp

memory/4176-1-0x0000000002AF0000-0x0000000002C3C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat9451.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4176-10-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/1536-9-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1536-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1536-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1536-22-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1536-23-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1536-25-0x0000000019400000-0x000000001965F000-memory.dmp

memory/1536-40-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1536-41-0x0000000000400000-0x0000000000649000-memory.dmp