Malware Analysis Report

2024-11-16 13:43

Sample ID 240608-ns9dzsbc5v
Target f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d
SHA256 f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d
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

f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d

Threat Level: Known bad

The file f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d 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

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-08 11:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-08 11:40

Reported

2024-06-08 11:43

Platform

win10v2004-20240508-en

Max time kernel

93s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.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\kat514C.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 3528 set thread context of 2388 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat514C.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\kat514C.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat514C.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat514C.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3528 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat514C.tmp
PID 3528 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat514C.tmp
PID 3528 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat514C.tmp
PID 3528 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat514C.tmp
PID 3528 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat514C.tmp
PID 3528 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat514C.tmp
PID 3528 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat514C.tmp
PID 3528 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat514C.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe

"C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe"

C:\Users\Admin\AppData\Local\Temp\kat514C.tmp

C:\Users\Admin\AppData\Local\Temp\kat514C.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 99.58.20.217.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 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 41.249.124.192.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.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
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 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/3528-0-0x0000000002240000-0x0000000002241000-memory.dmp

memory/3528-2-0x0000000002A60000-0x0000000002BC3000-memory.dmp

memory/2388-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2388-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3528-10-0x0000000000400000-0x00000000005EE000-memory.dmp

memory/2388-9-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat514C.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2388-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2388-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2388-25-0x000000001B790000-0x000000001B9EF000-memory.dmp

memory/2388-40-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2388-41-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-08 11:40

Reported

2024-06-08 11:43

Platform

win11-20240426-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.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\kat6DEC.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 240 set thread context of 4572 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat6DEC.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\kat6DEC.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 240 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp
PID 240 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp
PID 240 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp
PID 240 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp
PID 240 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp
PID 240 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp
PID 240 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp
PID 240 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe

"C:\Users\Admin\AppData\Local\Temp\f58fdbe807a8c635a94fb3d2544f057daedb7f6c43fb3133c0d92a482bb1344d.exe"

C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp

C:\Users\Admin\AppData\Local\Temp\kat6DEC.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
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.249.124.192.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
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/240-0-0x0000000002490000-0x0000000002491000-memory.dmp

memory/240-1-0x00000000041C0000-0x0000000004323000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat6DEC.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4572-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4572-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4572-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/240-10-0x0000000000400000-0x00000000005EE000-memory.dmp

memory/4572-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4572-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4572-27-0x000000001DC90000-0x000000001DEEF000-memory.dmp

memory/4572-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4572-43-0x0000000000400000-0x0000000000648000-memory.dmp