Malware Analysis Report

2024-11-30 07:43

Sample ID 240603-g75k1sfg97
Target 39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c
SHA256 39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c
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

39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c

Threat Level: Known bad

The file 39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Stealc

Vidar

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

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 06:27

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 06:27

Reported

2024-06-03 06:30

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.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\kat4DA3.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 4772 set thread context of 3500 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat4DA3.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\kat4DA3.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4772 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp
PID 4772 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp
PID 4772 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp
PID 4772 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp
PID 4772 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp
PID 4772 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp
PID 4772 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp
PID 4772 wrote to memory of 3500 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe

"C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe"

C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp

C:\Users\Admin\AppData\Local\Temp\kat4DA3.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 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.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
US 8.8.8.8:53 245.158.13.49.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.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
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 133.211.185.52.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 8.8.8.8:53 194.61.62.23.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 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.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 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 123.10.44.20.in-addr.arpa udp

Files

memory/4772-0-0x0000000000820000-0x0000000000821000-memory.dmp

memory/4772-2-0x0000000002B20000-0x0000000002C6C000-memory.dmp

memory/3500-4-0x0000000000400000-0x0000000000649000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4DA3.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4772-6-0x0000000000400000-0x0000000000663000-memory.dmp

memory/3500-9-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3500-10-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3500-13-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3500-14-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3500-16-0x000000001B7B0000-0x000000001BA0F000-memory.dmp

memory/3500-31-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3500-32-0x0000000000400000-0x0000000000649000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 06:27

Reported

2024-06-03 06:30

Platform

win11-20240426-en

Max time kernel

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat5DEF.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 488 set thread context of 1140 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat5DEF.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\kat5DEF.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 488 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp
PID 488 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp
PID 488 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp
PID 488 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp
PID 488 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp
PID 488 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp
PID 488 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp
PID 488 wrote to memory of 1140 N/A C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe

"C:\Users\Admin\AppData\Local\Temp\39a59c41d470f8cb957f09db6ce3acdcc5651eb3509f7a7bf6bf4b04fe989d2c.exe"

C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp

C:\Users\Admin\AppData\Local\Temp\kat5DEF.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 8.8.8.8:53 245.158.13.49.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 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp

Files

memory/488-0-0x00000000024A0000-0x00000000024A1000-memory.dmp

memory/488-1-0x00000000040E0000-0x000000000422C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat5DEF.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1140-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1140-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/488-10-0x0000000000400000-0x0000000000663000-memory.dmp

memory/1140-9-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1140-15-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1140-16-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1140-18-0x00000000193D0000-0x000000001962F000-memory.dmp

memory/1140-33-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1140-34-0x0000000000400000-0x0000000000649000-memory.dmp