Malware Analysis Report

2024-11-13 13:30

Sample ID 240604-bx4m3shd32
Target 966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011
SHA256 966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011
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

966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011

Threat Level: Known bad

The file 966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Stealc

Vidar

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

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-04 01:32

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-04 01:32

Reported

2024-06-04 01:34

Platform

win10v2004-20240508-en

Max time kernel

131s

Max time network

132s

Command Line

"C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.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\kat828E.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 1876 set thread context of 1108 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat828E.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\kat828E.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat828E.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat828E.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1876 wrote to memory of 1108 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat828E.tmp
PID 1876 wrote to memory of 1108 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat828E.tmp
PID 1876 wrote to memory of 1108 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat828E.tmp
PID 1876 wrote to memory of 1108 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat828E.tmp
PID 1876 wrote to memory of 1108 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat828E.tmp
PID 1876 wrote to memory of 1108 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat828E.tmp
PID 1876 wrote to memory of 1108 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat828E.tmp
PID 1876 wrote to memory of 1108 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat828E.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe

"C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe"

C:\Users\Admin\AppData\Local\Temp\kat828E.tmp

C:\Users\Admin\AppData\Local\Temp\kat828E.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.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 41.249.124.192.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
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
DE 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
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 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.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 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/1876-0-0x0000000000780000-0x0000000000781000-memory.dmp

memory/1876-1-0x0000000002A20000-0x0000000002B6C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat828E.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1876-9-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/1108-10-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1108-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1108-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1108-22-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1108-23-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1108-25-0x000000001B7A0000-0x000000001B9FF000-memory.dmp

memory/1108-40-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1108-41-0x0000000000400000-0x0000000000649000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-04 01:32

Reported

2024-06-04 01:34

Platform

win11-20240426-en

Max time kernel

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.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\kat49DA.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 2892 set thread context of 4572 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat49DA.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\kat49DA.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2892 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp
PID 2892 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp
PID 2892 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp
PID 2892 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp
PID 2892 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp
PID 2892 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp
PID 2892 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp
PID 2892 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe

"C:\Users\Admin\AppData\Local\Temp\966eb0f2f79f0e66ab2f04bcf726d9a4249d16225ab4f09e0c0d5a5397d33011.exe"

C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp

C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa 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 41.249.124.192.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
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/2892-0-0x0000000000980000-0x0000000000981000-memory.dmp

memory/2892-1-0x0000000004090000-0x00000000041DC000-memory.dmp

memory/4572-4-0x0000000000400000-0x0000000000649000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat49DA.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2892-10-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/4572-9-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4572-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4572-24-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4572-25-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4572-27-0x0000000026070000-0x00000000262CF000-memory.dmp

memory/4572-42-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4572-43-0x0000000000400000-0x0000000000649000-memory.dmp