Malware Analysis Report

2025-01-03 07:46

Sample ID 230421-mq39hsha31
Target Purchase Order.exe
SHA256 0f9109bc99a6c0cb299d1520099a8ca2d87d8ca4e1806fde417b60cf6dd233f9
Tags
blustealer collection stealer
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

0f9109bc99a6c0cb299d1520099a8ca2d87d8ca4e1806fde417b60cf6dd233f9

Threat Level: Known bad

The file Purchase Order.exe was found to be: Known bad.

Malicious Activity Summary

blustealer collection stealer

BluStealer

Accesses Microsoft Outlook profiles

Suspicious use of SetThreadContext

Enumerates physical storage devices

Script User-Agent

outlook_office_path

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

outlook_win_path

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-04-21 10:41

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-04-21 10:41

Reported

2023-04-21 10:43

Platform

win7-20230220-en

Max time kernel

48s

Max time network

31s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1240 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 1560 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 1560 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 1560 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 1560 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 632 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 632 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 632 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 632 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 872 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 872 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 872 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 1240 wrote to memory of 872 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe

"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe

"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe

"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe

"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe

"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe

"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"

Network

N/A

Files

memory/1240-54-0x0000000000240000-0x0000000000322000-memory.dmp

memory/1240-55-0x00000000020E0000-0x0000000002120000-memory.dmp

memory/1240-56-0x00000000004C0000-0x00000000004D2000-memory.dmp

memory/1240-57-0x00000000004D0000-0x00000000004DC000-memory.dmp

memory/1240-58-0x0000000007E70000-0x0000000007F1C000-memory.dmp

memory/1240-59-0x0000000005DC0000-0x0000000005E36000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-04-21 10:41

Reported

2023-04-21 10:43

Platform

win10v2004-20230220-en

Max time kernel

148s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"

Signatures

BluStealer

stealer blustealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4356 set thread context of 4552 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4552 set thread context of 1412 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

Enumerates physical storage devices

Script User-Agent

Description Indicator Process Target
HTTP User-Agent header Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) N/A N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4356 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4356 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4356 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4356 wrote to memory of 4552 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4356 wrote to memory of 4552 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4356 wrote to memory of 4552 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4356 wrote to memory of 4552 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4356 wrote to memory of 4552 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4356 wrote to memory of 4552 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4356 wrote to memory of 4552 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4356 wrote to memory of 4552 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
PID 4552 wrote to memory of 1412 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4552 wrote to memory of 1412 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4552 wrote to memory of 1412 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4552 wrote to memory of 1412 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 4552 wrote to memory of 1412 N/A C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe

"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe

"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe

"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 123.108.74.40.in-addr.arpa udp
US 8.8.8.8:53 254.7.248.8.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 108.211.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 20.189.173.2:443 tcp
US 209.197.3.8:80 tcp
US 8.8.8.8:53 0.77.109.52.in-addr.arpa udp
US 13.107.4.50:80 tcp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 22.249.124.192.in-addr.arpa udp

Files

memory/4356-136-0x00000000002B0000-0x0000000000392000-memory.dmp

memory/4356-137-0x00000000052E0000-0x0000000005884000-memory.dmp

memory/4356-138-0x0000000004DD0000-0x0000000004E62000-memory.dmp

memory/4356-139-0x0000000004D60000-0x0000000004D6A000-memory.dmp

memory/4356-140-0x0000000004F60000-0x0000000004F70000-memory.dmp

memory/4356-141-0x0000000004F60000-0x0000000004F70000-memory.dmp

memory/4356-142-0x0000000007D70000-0x0000000007E0C000-memory.dmp

memory/4552-143-0x0000000000400000-0x000000000046E000-memory.dmp

memory/4552-146-0x0000000000400000-0x000000000046E000-memory.dmp

memory/4552-149-0x0000000000400000-0x000000000046E000-memory.dmp

memory/1412-150-0x0000000001020000-0x0000000001086000-memory.dmp