Malware Analysis Report

2024-11-15 05:36

Sample ID 240603-l3eagsag9v
Target a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0
SHA256 a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0
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

a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0

Threat Level: Known bad

The file a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0 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

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 10:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 10:03

Reported

2024-06-03 10:05

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.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\kat4D35.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 1428 set thread context of 3772 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat4D35.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\kat4D35.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1428 wrote to memory of 3772 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp
PID 1428 wrote to memory of 3772 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp
PID 1428 wrote to memory of 3772 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp
PID 1428 wrote to memory of 3772 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp
PID 1428 wrote to memory of 3772 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp
PID 1428 wrote to memory of 3772 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp
PID 1428 wrote to memory of 3772 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp
PID 1428 wrote to memory of 3772 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe

"C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe"

C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp

C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.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 8.8.8.8:53 245.158.13.49.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 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
DE 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 131.72.42.20.in-addr.arpa udp

Files

memory/1428-0-0x0000000002430000-0x0000000002431000-memory.dmp

memory/1428-2-0x0000000003C10000-0x0000000003D5C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4D35.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3772-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1428-9-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/3772-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3772-10-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3772-13-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3772-14-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3772-16-0x000000001B760000-0x000000001B9BF000-memory.dmp

memory/3772-31-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3772-32-0x0000000000400000-0x0000000000649000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 10:03

Reported

2024-06-03 10:05

Platform

win11-20240508-en

Max time kernel

90s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.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\kat80C9.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 2172 set thread context of 2068 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat80C9.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\kat80C9.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2172 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp
PID 2172 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp
PID 2172 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp
PID 2172 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp
PID 2172 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp
PID 2172 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp
PID 2172 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp
PID 2172 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe

"C:\Users\Admin\AppData\Local\Temp\a7673fcf3719bd3ceffb61f5d81e5b55ad4d271b7942d9a26598ec85e02024b0.exe"

C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp

C:\Users\Admin\AppData\Local\Temp\kat80C9.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
US 8.8.8.8:53 41.249.124.192.in-addr.arpa udp
US 8.8.8.8:53 97.90.14.23.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/2172-0-0x0000000002320000-0x0000000002321000-memory.dmp

memory/2172-2-0x0000000002A40000-0x0000000002B8C000-memory.dmp

memory/2068-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2068-8-0x0000000000400000-0x0000000000649000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat80C9.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2068-9-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2172-10-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/2068-24-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2068-25-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2068-27-0x000000001DC90000-0x000000001DEEF000-memory.dmp

memory/2068-42-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2068-43-0x0000000000400000-0x0000000000649000-memory.dmp