Malware Analysis Report

2024-11-16 13:44

Sample ID 240607-jmv7ysdh96
Target b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94
SHA256 b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94
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

b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94

Threat Level: Known bad

The file b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94 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

Checks processor information in registry

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-07 07:47

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-07 07:47

Reported

2024-06-07 07:58

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.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\kat3DF3.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 1948 set thread context of 4516 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat3DF3.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\kat3DF3.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1948 wrote to memory of 4516 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp
PID 1948 wrote to memory of 4516 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp
PID 1948 wrote to memory of 4516 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp
PID 1948 wrote to memory of 4516 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp
PID 1948 wrote to memory of 4516 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp
PID 1948 wrote to memory of 4516 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp
PID 1948 wrote to memory of 4516 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp
PID 1948 wrote to memory of 4516 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe

"C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe"

C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp

C:\Users\Admin\AppData\Local\Temp\kat3DF3.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 t.me udp
NL 149.154.167.99:443 t.me tcp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
BE 88.221.83.195:443 www.bing.com tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 195.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 18.190.202.116.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 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
US 8.8.8.8:53 26.178.89.13.in-addr.arpa udp

Files

memory/1948-0-0x0000000002350000-0x0000000002351000-memory.dmp

memory/1948-1-0x0000000002A70000-0x0000000002BD6000-memory.dmp

memory/1948-9-0x0000000000400000-0x00000000006EF000-memory.dmp

memory/4516-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4516-8-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat3DF3.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4516-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4516-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4516-14-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4516-16-0x0000000019330000-0x000000001958F000-memory.dmp

memory/4516-31-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4516-32-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-07 07:47

Reported

2024-06-07 07:58

Platform

win11-20240508-en

Max time kernel

91s

Max time network

93s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.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\kat80E8.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 4748 set thread context of 4268 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat80E8.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\kat80E8.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4748 wrote to memory of 4268 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp
PID 4748 wrote to memory of 4268 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp
PID 4748 wrote to memory of 4268 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp
PID 4748 wrote to memory of 4268 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp
PID 4748 wrote to memory of 4268 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp
PID 4748 wrote to memory of 4268 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp
PID 4748 wrote to memory of 4268 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp
PID 4748 wrote to memory of 4268 N/A C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe

"C:\Users\Admin\AppData\Local\Temp\b95f6dad05c8c7ffa72e8d85a79a4af873a5c551139f6ea2bbd7fec271024e94.exe"

C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp

C:\Users\Admin\AppData\Local\Temp\kat80E8.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 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp

Files

memory/4748-0-0x0000000002550000-0x0000000002551000-memory.dmp

memory/4748-3-0x0000000004160000-0x00000000042C6000-memory.dmp

memory/4268-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4268-8-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat80E8.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4268-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4748-9-0x0000000000400000-0x00000000006EF000-memory.dmp

memory/4268-15-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4268-16-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4268-18-0x000000001B7F0000-0x000000001BA4F000-memory.dmp

memory/4268-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4268-49-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4268-51-0x0000000000400000-0x0000000000648000-memory.dmp