Malware Analysis Report

2024-11-30 07:54

Sample ID 240603-gb3fsaef24
Target 55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a
SHA256 55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a
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

55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a

Threat Level: Known bad

The file 55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Vidar

Detect Vidar Stealer

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

2024-06-03 05:38

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 05:38

Reported

2024-06-03 05:41

Platform

win10v2004-20240508-en

Max time kernel

137s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.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
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\kat4F68.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 2584 set thread context of 4824 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat4F68.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\kat4F68.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2584 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp
PID 2584 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp
PID 2584 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp
PID 2584 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp
PID 2584 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp
PID 2584 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp
PID 2584 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp
PID 2584 wrote to memory of 4824 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe

"C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe"

C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp

C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 203.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 24.249.124.192.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 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 245.158.13.49.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.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 8.8.8.8:53 194.61.62.23.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
US 8.8.8.8:53 43.58.199.20.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
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
IE 52.111.236.23:443 tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.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/2584-0-0x0000000000920000-0x0000000000921000-memory.dmp

memory/2584-1-0x0000000002AA0000-0x0000000002BEC000-memory.dmp

memory/4824-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4824-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4824-9-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2584-10-0x0000000000400000-0x0000000000663000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4F68.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4824-22-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4824-23-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4824-25-0x000000001B7F0000-0x000000001BA4F000-memory.dmp

memory/4824-40-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4824-56-0x0000000000400000-0x0000000000649000-memory.dmp

memory/4824-57-0x0000000000400000-0x0000000000649000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 05:38

Reported

2024-06-03 05:41

Platform

win11-20240426-en

Max time kernel

93s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.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\kat7947.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 532 set thread context of 5072 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat7947.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\kat7947.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat7947.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat7947.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 532 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat7947.tmp
PID 532 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat7947.tmp
PID 532 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat7947.tmp
PID 532 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat7947.tmp
PID 532 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat7947.tmp
PID 532 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat7947.tmp
PID 532 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat7947.tmp
PID 532 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe C:\Users\Admin\AppData\Local\Temp\kat7947.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe

"C:\Users\Admin\AppData\Local\Temp\55ae28e1e0118a91a582025d286cdf3b2c911381ea6e3d1ddcb5090c807cdb0a.exe"

C:\Users\Admin\AppData\Local\Temp\kat7947.tmp

C:\Users\Admin\AppData\Local\Temp\kat7947.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
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
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

Files

memory/532-0-0x00000000024A0000-0x00000000024A1000-memory.dmp

memory/532-2-0x0000000004090000-0x00000000041DC000-memory.dmp

memory/5072-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5072-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/532-9-0x0000000000400000-0x0000000000663000-memory.dmp

memory/5072-10-0x0000000000400000-0x0000000000649000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat7947.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/5072-24-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5072-25-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5072-27-0x000000001DCC0000-0x000000001DF1F000-memory.dmp

memory/5072-42-0x0000000000400000-0x0000000000649000-memory.dmp

memory/5072-43-0x0000000000400000-0x0000000000649000-memory.dmp