Malware Analysis Report

2024-11-16 13:43

Sample ID 240607-1yp9hsdc6z
Target 1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65
SHA256 1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65
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

1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65

Threat Level: Known bad

The file 1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Stealc

Detect Vidar Stealer

Vidar

Downloads MZ/PE file

Checks computer location settings

Reads data files stored by FTP clients

Executes dropped EXE

Reads user/profile data of web browsers

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-07 22:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-07 22:03

Reported

2024-06-07 22:06

Platform

win10v2004-20240426-en

Max time kernel

92s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
N/A N/A N/A N/A
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Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat3623.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat3623.tmp N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3088 set thread context of 1432 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\kat3623.tmp

Enumerates physical storage devices

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\kat3623.tmp N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3088 wrote to memory of 1432 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\kat3623.tmp
PID 3088 wrote to memory of 1432 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\kat3623.tmp
PID 3088 wrote to memory of 1432 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\kat3623.tmp
PID 3088 wrote to memory of 1432 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\kat3623.tmp
PID 3088 wrote to memory of 1432 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\kat3623.tmp
PID 3088 wrote to memory of 1432 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\kat3623.tmp
PID 3088 wrote to memory of 1432 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\kat3623.tmp
PID 3088 wrote to memory of 1432 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\kat3623.tmp
PID 1432 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\kat3623.tmp C:\Windows\SysWOW64\cmd.exe
PID 1432 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\kat3623.tmp C:\Windows\SysWOW64\cmd.exe
PID 1432 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\kat3623.tmp C:\Windows\SysWOW64\cmd.exe
PID 2520 wrote to memory of 904 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2520 wrote to memory of 904 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2520 wrote to memory of 904 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe

"C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe"

C:\Users\Admin\AppData\Local\Temp\kat3623.tmp

C:\Users\Admin\AppData\Local\Temp\kat3623.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat3623.tmp" & rd /s /q "C:\ProgramData\BFIJKEBFBFHI" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 145.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 41.249.124.192.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
US 8.8.8.8:53 18.190.202.116.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.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
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 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
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/3088-0-0x00000000022D0000-0x00000000022D1000-memory.dmp

memory/3088-2-0x0000000002A90000-0x0000000002BF3000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat3623.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3088-10-0x0000000000400000-0x000000000067A000-memory.dmp

memory/1432-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1432-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1432-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1432-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1432-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1432-27-0x000000001B780000-0x000000001B9DF000-memory.dmp

memory/1432-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1432-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1432-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1432-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1432-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1432-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1432-73-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-07 22:03

Reported

2024-06-07 22:06

Platform

win11-20240508-en

Max time kernel

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
N/A N/A N/A N/A
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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\katA41F.tmp N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1340 set thread context of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\katA41F.tmp

Enumerates physical storage devices

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\katA41F.tmp N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1340 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\katA41F.tmp
PID 1340 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\katA41F.tmp
PID 1340 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\katA41F.tmp
PID 1340 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\katA41F.tmp
PID 1340 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\katA41F.tmp
PID 1340 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\katA41F.tmp
PID 1340 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\katA41F.tmp
PID 1340 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe C:\Users\Admin\AppData\Local\Temp\katA41F.tmp
PID 2100 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\katA41F.tmp C:\Windows\SysWOW64\cmd.exe
PID 2100 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\katA41F.tmp C:\Windows\SysWOW64\cmd.exe
PID 2100 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\katA41F.tmp C:\Windows\SysWOW64\cmd.exe
PID 1916 wrote to memory of 2520 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1916 wrote to memory of 2520 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1916 wrote to memory of 2520 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe

"C:\Users\Admin\AppData\Local\Temp\1b3f990d26ed6121066761d6d0bae20cc69c97dda48a5e11c11c34cef8d47f65.exe"

C:\Users\Admin\AppData\Local\Temp\katA41F.tmp

C:\Users\Admin\AppData\Local\Temp\katA41F.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\katA41F.tmp" & rd /s /q "C:\ProgramData\CAFBGDHCBAEH" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

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 116.202.190.18:5432 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
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 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/1340-0-0x00000000025E0000-0x00000000025E1000-memory.dmp

memory/1340-1-0x00000000040B0000-0x0000000004213000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\katA41F.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2100-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2100-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1340-10-0x0000000000400000-0x000000000067A000-memory.dmp

memory/2100-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2100-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2100-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2100-27-0x000000001B870000-0x000000001BACF000-memory.dmp

memory/2100-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2100-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2100-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2100-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2100-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2100-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2100-75-0x0000000000400000-0x0000000000648000-memory.dmp