Malware Analysis Report

2024-11-15 05:40

Sample ID 240604-cfywyaac32
Target 690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc
SHA256 690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc
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

690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc

Threat Level: Known bad

The file 690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc 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 behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-04 02:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-04 02:01

Reported

2024-06-04 02:04

Platform

win10v2004-20240508-en

Max time kernel

134s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.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\kat2B22.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 1536 set thread context of 5084 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat2B22.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\kat2B22.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1536 wrote to memory of 5084 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp
PID 1536 wrote to memory of 5084 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp
PID 1536 wrote to memory of 5084 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp
PID 1536 wrote to memory of 5084 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp
PID 1536 wrote to memory of 5084 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp
PID 1536 wrote to memory of 5084 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp
PID 1536 wrote to memory of 5084 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp
PID 1536 wrote to memory of 5084 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe

"C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe"

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 --field-trial-handle=4276,i,11746347647270949551,7786733067759450703,262144 --variations-seed-version --mojo-platform-channel-handle=4288 /prefetch:8

C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp

C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 58.55.71.13.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
US 8.8.8.8:53 22.249.124.192.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
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 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 25.173.189.20.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
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp

Files

memory/1536-0-0x0000000002220000-0x0000000002221000-memory.dmp

memory/1536-2-0x0000000002AA0000-0x0000000002BEC000-memory.dmp

memory/5084-4-0x0000000000400000-0x0000000000649000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat2B22.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/5084-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1536-10-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/5084-9-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5084-22-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5084-23-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5084-25-0x000000001B7C0000-0x000000001BA1F000-memory.dmp

memory/5084-40-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5084-41-0x0000000000400000-0x0000000000649000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-04 02:01

Reported

2024-06-04 02:04

Platform

win11-20240426-en

Max time kernel

92s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.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\kat71D4.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 1376 set thread context of 5060 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat71D4.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\kat71D4.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1376 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp
PID 1376 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp
PID 1376 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp
PID 1376 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp
PID 1376 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp
PID 1376 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp
PID 1376 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp
PID 1376 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe

"C:\Users\Admin\AppData\Local\Temp\690c5267c77eeb53c5b9dc344a523823e25d5c9166f19978c60e7e86a503ecfc.exe"

C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp

C:\Users\Admin\AppData\Local\Temp\kat71D4.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 8.8.8.8:53 172.210.232.199.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
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/1376-0-0x0000000002320000-0x0000000002321000-memory.dmp

memory/1376-2-0x0000000004080000-0x00000000041CC000-memory.dmp

memory/5060-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5060-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1376-10-0x0000000000400000-0x00000000005CE000-memory.dmp

memory/5060-9-0x0000000000400000-0x0000000000649000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat71D4.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/5060-24-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5060-25-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5060-28-0x00000000260C0000-0x000000002631F000-memory.dmp

memory/5060-42-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5060-43-0x0000000000400000-0x0000000000649000-memory.dmp