Malware Analysis Report

2024-10-19 02:35

Sample ID 220221-nfec3shhd6
Target 7f945e1d965b68e1ea68a3e9cd2263dd8b664a5cf618529dda169fb650b6505a
SHA256 7f945e1d965b68e1ea68a3e9cd2263dd8b664a5cf618529dda169fb650b6505a
Tags
taurus discovery 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

7f945e1d965b68e1ea68a3e9cd2263dd8b664a5cf618529dda169fb650b6505a

Threat Level: Known bad

The file 7f945e1d965b68e1ea68a3e9cd2263dd8b664a5cf618529dda169fb650b6505a was found to be: Known bad.

Malicious Activity Summary

taurus discovery spyware stealer trojan

Taurus Stealer

Taurus Stealer Payload

Deletes itself

Reads user/profile data of web browsers

Checks installed software on the system

Accesses 2FA software files, possible credential harvesting

Suspicious use of SetThreadContext

Drops file in Windows directory

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-02-21 11:20

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-02-21 11:20

Reported

2022-02-21 19:15

Platform

win7-en-20211208

Max time kernel

118s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe"

Signatures

Taurus Stealer

trojan stealer taurus

Taurus Stealer Payload

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

Deletes itself

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

Description Indicator Process Target
PID 960 set thread context of 1612 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe

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 960 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 960 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 960 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 960 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 960 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 960 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 960 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 960 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 960 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 960 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 1612 wrote to memory of 1736 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Windows\SysWOW64\cmd.exe
PID 1612 wrote to memory of 1736 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Windows\SysWOW64\cmd.exe
PID 1612 wrote to memory of 1736 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Windows\SysWOW64\cmd.exe
PID 1612 wrote to memory of 1736 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Windows\SysWOW64\cmd.exe
PID 1736 wrote to memory of 988 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1736 wrote to memory of 988 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1736 wrote to memory of 988 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1736 wrote to memory of 988 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe

"C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe"

C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe

"C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe"

C:\Windows\SysWOW64\cmd.exe

/c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe

C:\Windows\SysWOW64\timeout.exe

timeout /t 3

Network

Country Destination Domain Proto
US 8.8.8.8:53 boltanew.ga udp

Files

memory/960-54-0x00000000030E8000-0x000000000310C000-memory.dmp

memory/960-56-0x00000000030E8000-0x000000000310C000-memory.dmp

memory/960-57-0x0000000000220000-0x0000000000259000-memory.dmp

memory/1612-55-0x0000000000400000-0x000000000043A000-memory.dmp

memory/1612-58-0x0000000075D11000-0x0000000075D13000-memory.dmp

memory/1612-59-0x0000000000400000-0x000000000043A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-02-21 11:20

Reported

2022-02-21 19:15

Platform

win10v2004-en-20220113

Max time kernel

121s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe"

Signatures

Taurus Stealer

trojan stealer taurus

Taurus Stealer Payload

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

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 SetThreadContext

Description Indicator Process Target
PID 4888 set thread context of 1364 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\ReportingEvents.log C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\WindowsUpdate.log C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.edb C:\Windows\system32\svchost.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 use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\svchost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4888 wrote to memory of 1364 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 4888 wrote to memory of 1364 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 4888 wrote to memory of 1364 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 4888 wrote to memory of 1364 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 4888 wrote to memory of 1364 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 4888 wrote to memory of 1364 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 4888 wrote to memory of 1364 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 4888 wrote to memory of 1364 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 4888 wrote to memory of 1364 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
PID 1364 wrote to memory of 2240 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Windows\SysWOW64\cmd.exe
PID 1364 wrote to memory of 2240 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Windows\SysWOW64\cmd.exe
PID 1364 wrote to memory of 2240 N/A C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe C:\Windows\SysWOW64\cmd.exe
PID 2240 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2240 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2240 wrote to memory of 2720 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe

"C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe"

C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe

"C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe"

C:\Windows\SysWOW64\cmd.exe

/c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe

C:\Windows\SysWOW64\timeout.exe

timeout /t 3

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv

Network

Country Destination Domain Proto
US 8.8.8.8:53 boltanew.ga udp
NL 67.26.111.254:80 tcp
NL 67.26.111.254:80 tcp
NL 67.26.111.254:80 tcp
US 8.8.8.8:53 crl4.digicert.com udp
US 93.184.220.29:80 crl4.digicert.com tcp
US 93.184.220.29:80 crl4.digicert.com tcp
US 93.184.220.29:80 crl4.digicert.com tcp
US 93.184.220.29:80 crl4.digicert.com tcp
NL 104.110.191.140:80 tcp
NL 104.110.191.140:80 tcp
NL 104.110.191.140:80 tcp

Files

memory/4888-130-0x0000000003013000-0x0000000003036000-memory.dmp

memory/4888-131-0x0000000003013000-0x0000000003036000-memory.dmp

memory/4888-132-0x00000000001C0000-0x00000000001F9000-memory.dmp

memory/1364-133-0x0000000000400000-0x000000000043A000-memory.dmp

memory/1364-134-0x0000000000400000-0x000000000043A000-memory.dmp

memory/4692-135-0x0000020516960000-0x0000020516970000-memory.dmp

memory/4692-136-0x0000020516F20000-0x0000020516F30000-memory.dmp

memory/4692-137-0x00000205195C0000-0x00000205195C4000-memory.dmp