Malware Analysis Report

2024-11-16 13:44

Sample ID 240607-knwesadf31
Target 9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61
SHA256 9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61
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

9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61

Threat Level: Known bad

The file 9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Stealc

Vidar

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

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-07 08:45

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-07 08:45

Reported

2024-06-07 08:47

Platform

win10v2004-20240426-en

Max time kernel

93s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.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\kat4FD5.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 3868 set thread context of 2360 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat4FD5.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\kat4FD5.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3868 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp
PID 3868 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp
PID 3868 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp
PID 3868 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp
PID 3868 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp
PID 3868 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp
PID 3868 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp
PID 3868 wrote to memory of 2360 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe

"C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe"

C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp

C:\Users\Admin\AppData\Local\Temp\kat4FD5.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 28.118.140.52.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
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 18.190.202.116.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.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 95.221.229.192.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
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 216.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/3868-0-0x00000000022D0000-0x00000000022D1000-memory.dmp

memory/3868-2-0x0000000003D70000-0x0000000003ED3000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4FD5.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2360-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2360-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2360-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3868-10-0x0000000000400000-0x000000000067A000-memory.dmp

memory/2360-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2360-14-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2360-16-0x000000001B730000-0x000000001B98F000-memory.dmp

memory/2360-31-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2360-32-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-07 08:45

Reported

2024-06-07 08:47

Platform

win11-20240508-en

Max time kernel

90s

Max time network

93s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.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\kat63EA.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 4228 set thread context of 2800 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat63EA.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\kat63EA.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4228 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp
PID 4228 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp
PID 4228 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp
PID 4228 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp
PID 4228 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp
PID 4228 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp
PID 4228 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp
PID 4228 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe

"C:\Users\Admin\AppData\Local\Temp\9e75e0d6eeac3290216d337afd34e4f6ea4a9b41e8bf42e3a3d8f40d4d1ade61.exe"

C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp

C:\Users\Admin\AppData\Local\Temp\kat63EA.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
US 8.8.8.8:53 18.190.202.116.in-addr.arpa udp
US 8.8.8.8:53 152.107.17.2.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

Files

memory/4228-0-0x0000000000930000-0x0000000000931000-memory.dmp

memory/4228-2-0x0000000004170000-0x00000000042D3000-memory.dmp

memory/2800-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat63EA.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2800-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2800-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4228-10-0x0000000000400000-0x000000000067A000-memory.dmp

memory/2800-15-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2800-16-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2800-18-0x000000001B8B0000-0x000000001BB0F000-memory.dmp

memory/2800-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2800-34-0x0000000000400000-0x0000000000648000-memory.dmp