Malware Analysis Report

2024-11-13 14:28

Sample ID 240603-lnzb4sbf58
Target 45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163
SHA256 45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163
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

45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163

Threat Level: Known bad

The file 45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Vidar

Detect Vidar Stealer

Stealc

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 09:41

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 09:41

Reported

2024-06-03 09:44

Platform

win10v2004-20240226-en

Max time kernel

141s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.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\kat4292.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 536 set thread context of 3940 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat4292.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\kat4292.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4292.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4292.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 536 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat4292.tmp
PID 536 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat4292.tmp
PID 536 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat4292.tmp
PID 536 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat4292.tmp
PID 536 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat4292.tmp
PID 536 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat4292.tmp
PID 536 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat4292.tmp
PID 536 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat4292.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe

"C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe"

C:\Users\Admin\AppData\Local\Temp\kat4292.tmp

C:\Users\Admin\AppData\Local\Temp\kat4292.tmp

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1408 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
GB 172.217.169.74:443 tcp
US 8.8.8.8:53 149.220.183.52.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
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 245.158.13.49.in-addr.arpa udp
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
US 13.107.253.64:443 tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 97.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 14.179.89.13.in-addr.arpa udp

Files

memory/536-0-0x0000000002350000-0x0000000002351000-memory.dmp

memory/536-1-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/536-2-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/536-3-0x00000000040E0000-0x000000000422C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4292.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3940-6-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3940-11-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3940-12-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3940-15-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3940-16-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3940-18-0x000000001B8C0000-0x000000001BB1F000-memory.dmp

memory/3940-33-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3940-34-0x0000000000400000-0x0000000000649000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 09:41

Reported

2024-06-03 09:44

Platform

win11-20240426-en

Max time kernel

91s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.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\kat9143.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 396 set thread context of 3160 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat9143.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\kat9143.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat9143.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat9143.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 396 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat9143.tmp
PID 396 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat9143.tmp
PID 396 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat9143.tmp
PID 396 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat9143.tmp
PID 396 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat9143.tmp
PID 396 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat9143.tmp
PID 396 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat9143.tmp
PID 396 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe C:\Users\Admin\AppData\Local\Temp\kat9143.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe

"C:\Users\Admin\AppData\Local\Temp\45c9f4972cd81d0eb03ebfc6a7e1f3d5b6be70a7be4bb31b0baa3c43491eb163.exe"

C:\Users\Admin\AppData\Local\Temp\kat9143.tmp

C:\Users\Admin\AppData\Local\Temp\kat9143.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 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 23.249.124.192.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
NL 52.111.243.30:443 tcp

Files

memory/396-0-0x0000000002320000-0x0000000002321000-memory.dmp

memory/396-2-0x0000000004050000-0x000000000419C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat9143.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3160-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/396-10-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/3160-9-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3160-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3160-24-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3160-25-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3160-28-0x000000001DC90000-0x000000001DEEF000-memory.dmp

memory/3160-42-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3160-43-0x0000000000400000-0x0000000000649000-memory.dmp