Malware Analysis Report

2024-10-19 02:35

Sample ID 220309-q36rysghh4
Target 05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829
SHA256 05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829
Tags
taurus discovery evasion spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829

Threat Level: Known bad

The file 05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829 was found to be: Known bad.

Malicious Activity Summary

taurus discovery evasion spyware stealer trojan

Taurus Stealer Payload

Taurus Stealer

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Reads user/profile data of web browsers

Checks BIOS information in registry

Identifies Wine through registry keys

Deletes itself

Checks installed software on the system

Accesses 2FA software files, possible credential harvesting

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-03-09 13:48

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-03-09 13:48

Reported

2022-03-09 13:50

Platform

win7-20220223-en

Max time kernel

4294181s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe"

Signatures

Taurus Stealer

trojan stealer taurus

Taurus Stealer Payload

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

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe N/A

Deletes itself

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

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe N/A

Reads user/profile data of web browsers

spyware stealer

Accesses 2FA software files, possible credential harvesting

spyware stealer

Checks installed software on the system

discovery

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe N/A

Delays execution with timeout.exe

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1668 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe C:\Windows\SysWOW64\cmd.exe
PID 1668 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe C:\Windows\SysWOW64\cmd.exe
PID 1668 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe C:\Windows\SysWOW64\cmd.exe
PID 1668 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe C:\Windows\SysWOW64\cmd.exe
PID 1668 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe C:\Windows\SysWOW64\cmd.exe
PID 1668 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe C:\Windows\SysWOW64\cmd.exe
PID 1668 wrote to memory of 1812 N/A C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe C:\Windows\SysWOW64\cmd.exe
PID 1812 wrote to memory of 2000 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1812 wrote to memory of 2000 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1812 wrote to memory of 2000 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1812 wrote to memory of 2000 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1812 wrote to memory of 2000 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1812 wrote to memory of 2000 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1812 wrote to memory of 2000 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe

"C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe"

C:\Windows\SysWOW64\cmd.exe

/c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe

C:\Windows\SysWOW64\timeout.exe

timeout /t 3

Network

Country Destination Domain Proto
US 8.8.8.8:53 deplicate.website udp

Files

memory/1668-54-0x00000000753E1000-0x00000000753E3000-memory.dmp

memory/1668-55-0x0000000076EA0000-0x0000000077020000-memory.dmp

memory/1668-58-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/1668-56-0x0000000000AE0000-0x0000000001D59000-memory.dmp

memory/1668-57-0x00000000004D0000-0x00000000004D1000-memory.dmp

memory/1668-59-0x00000000004B0000-0x00000000004B1000-memory.dmp

memory/1668-60-0x00000000004F0000-0x00000000004F1000-memory.dmp

memory/1668-61-0x0000000000500000-0x0000000000501000-memory.dmp

memory/1668-62-0x0000000000510000-0x0000000000511000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-03-09 13:48

Reported

2022-03-09 13:50

Platform

win10v2004-en-20220113

Max time kernel

128s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe"

Signatures

Taurus Stealer

trojan stealer taurus

Taurus Stealer Payload

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

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe N/A

Reads user/profile data of web browsers

spyware stealer

Accesses 2FA software files, possible credential harvesting

spyware stealer

Checks installed software on the system

discovery

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe N/A

Delays execution with timeout.exe

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

Processes

C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe

"C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe"

C:\Windows\SysWOW64\cmd.exe

/c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe

C:\Windows\SysWOW64\timeout.exe

timeout /t 3

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
NL 178.79.208.1:80 tcp
NL 178.79.208.1:80 tcp
NL 178.79.208.1:80 tcp
SK 185.201.236.109:443 tcp
US 8.8.8.8:53 deplicate.website udp
US 72.21.81.240:80 tcp
US 72.21.81.240:80 tcp
US 8.8.8.8:53 crl4.digicert.com udp
US 93.184.220.29:80 crl4.digicert.com tcp
US 20.189.173.15:443 tcp
US 8.8.8.8:53 151.122.125.40.in-addr.arpa udp
US 8.8.8.8:53 7.6.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.2.0.0.0.0.2.0.1.3.0.6.2.ip6.arpa udp
US 93.184.220.29:80 crl4.digicert.com tcp

Files

memory/4560-130-0x0000000077BB0000-0x0000000077D53000-memory.dmp

memory/4560-131-0x0000000000F70000-0x00000000021E9000-memory.dmp

memory/4560-132-0x0000000003800000-0x0000000003801000-memory.dmp

memory/4560-133-0x0000000003810000-0x0000000003811000-memory.dmp