Malware Analysis Report

2024-11-15 06:40

Sample ID 240603-k5ylgaba89
Target b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac
SHA256 b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac
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

b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac

Threat Level: Known bad

The file b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Stealc

Detect Vidar Stealer

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

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 09:11

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 09:11

Reported

2024-06-03 09:14

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.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\kat75DC.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 4496 set thread context of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat75DC.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\kat75DC.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4496 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp
PID 4496 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp
PID 4496 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp
PID 4496 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp
PID 4496 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp
PID 4496 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp
PID 4496 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp
PID 4496 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe

"C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe"

C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp

C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.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 23.62.61.99:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 99.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.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
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 99.167.154.149.in-addr.arpa udp
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
US 8.8.8.8:53 13.86.106.20.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
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/4496-0-0x0000000000780000-0x0000000000781000-memory.dmp

memory/4496-1-0x0000000002A40000-0x0000000002B8C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat75DC.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4496-9-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/2252-10-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2252-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2252-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2252-13-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2252-14-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2252-16-0x000000001DB90000-0x000000001DDEF000-memory.dmp

memory/2252-31-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2252-32-0x0000000000400000-0x0000000000649000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 09:11

Reported

2024-06-03 09:14

Platform

win11-20240426-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.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\kat6AA1.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 2820 set thread context of 1356 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat6AA1.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\kat6AA1.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2820 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp
PID 2820 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp
PID 2820 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp
PID 2820 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp
PID 2820 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp
PID 2820 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp
PID 2820 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp
PID 2820 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe

"C:\Users\Admin\AppData\Local\Temp\b782fd61519076914e32b5557ad707760cbd92bb4951d5fc43d5ffdf03c77cac.exe"

C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp

C:\Users\Admin\AppData\Local\Temp\kat6AA1.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 8.8.8.8:53 245.158.13.49.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
DE 49.13.158.245:5432 49.13.158.245 tcp
US 52.111.229.48:443 tcp

Files

memory/2820-0-0x0000000002460000-0x0000000002461000-memory.dmp

memory/2820-2-0x00000000041D0000-0x000000000431C000-memory.dmp

memory/1356-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2820-9-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/1356-10-0x0000000000400000-0x0000000000649000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat6AA1.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1356-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1356-24-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1356-25-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1356-27-0x0000000026040000-0x000000002629F000-memory.dmp

memory/1356-42-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1356-43-0x0000000000400000-0x0000000000649000-memory.dmp