Malware Analysis Report

2024-11-15 05:40

Sample ID 240604-b93ljsaa33
Target f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301
SHA256 f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301
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

f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301

Threat Level: Known bad

The file f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Vidar

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

2024-06-04 01:51

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-04 01:51

Reported

2024-06-04 01:54

Platform

win10v2004-20240508-en

Max time kernel

130s

Max time network

101s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.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\kat5CF5.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 5796 set thread context of 5424 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat5CF5.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\kat5CF5.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5796 wrote to memory of 5424 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp
PID 5796 wrote to memory of 5424 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp
PID 5796 wrote to memory of 5424 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp
PID 5796 wrote to memory of 5424 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp
PID 5796 wrote to memory of 5424 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp
PID 5796 wrote to memory of 5424 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp
PID 5796 wrote to memory of 5424 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp
PID 5796 wrote to memory of 5424 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe

"C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe"

C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp

C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.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
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
DE 49.13.158.245:5432 49.13.158.245 tcp
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 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp

Files

memory/5796-0-0x00000000006B0000-0x00000000006B1000-memory.dmp

memory/5796-1-0x0000000002A60000-0x0000000002BAC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat5CF5.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/5424-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5424-10-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5796-9-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/5424-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5424-13-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5424-14-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5424-16-0x000000001B770000-0x000000001B9CF000-memory.dmp

memory/5424-31-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5424-32-0x0000000000400000-0x0000000000649000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-04 01:51

Reported

2024-06-04 01:54

Platform

win11-20240426-en

Max time kernel

92s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.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\kat513D.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 1448 set thread context of 800 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat513D.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\kat513D.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat513D.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat513D.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1448 wrote to memory of 800 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat513D.tmp
PID 1448 wrote to memory of 800 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat513D.tmp
PID 1448 wrote to memory of 800 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat513D.tmp
PID 1448 wrote to memory of 800 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat513D.tmp
PID 1448 wrote to memory of 800 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat513D.tmp
PID 1448 wrote to memory of 800 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat513D.tmp
PID 1448 wrote to memory of 800 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat513D.tmp
PID 1448 wrote to memory of 800 N/A C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe C:\Users\Admin\AppData\Local\Temp\kat513D.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe

"C:\Users\Admin\AppData\Local\Temp\f1f30ed730083ddebcb78753794c24eb72332a5878657064035b914b150a7301.exe"

C:\Users\Admin\AppData\Local\Temp\kat513D.tmp

C:\Users\Admin\AppData\Local\Temp\kat513D.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 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 99.167.154.149.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
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp

Files

memory/1448-0-0x0000000002560000-0x0000000002561000-memory.dmp

memory/1448-1-0x0000000004180000-0x00000000042CC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat513D.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/800-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/800-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/800-9-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1448-10-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/800-15-0x0000000000400000-0x0000000000649000-memory.dmp

memory/800-16-0x0000000000400000-0x0000000000649000-memory.dmp

memory/800-18-0x0000000019350000-0x00000000195AF000-memory.dmp

memory/800-33-0x0000000000400000-0x0000000000649000-memory.dmp

memory/800-37-0x0000000000400000-0x0000000000649000-memory.dmp