Malware Analysis Report

2025-01-03 07:46

Sample ID 230421-llyykafa25
Target SOLICITUD DE PRESUPUESTO-21-04-23.exe
SHA256 3f6604df64307223a9a72e68f28c14d3cbf5af90549667839622b8e3490fbe8b
Tags
blustealer stormkitty collection spyware 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

3f6604df64307223a9a72e68f28c14d3cbf5af90549667839622b8e3490fbe8b

Threat Level: Known bad

The file SOLICITUD DE PRESUPUESTO-21-04-23.exe was found to be: Known bad.

Malicious Activity Summary

blustealer stormkitty collection spyware stealer

StormKitty

StormKitty payload

BluStealer

Accesses Microsoft Outlook profiles

Accesses cryptocurrency files/wallets, possible credential harvesting

Looks up external IP address via web service

Suspicious use of SetThreadContext

outlook_win_path

Checks processor information in registry

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

outlook_office_path

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-04-21 09:37

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-04-21 09:37

Reported

2023-04-21 09:40

Platform

win7-20230220-en

Max time kernel

122s

Max time network

30s

Command Line

"C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe"

Signatures

BluStealer

stealer blustealer

StormKitty

stealer stormkitty

StormKitty 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

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\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-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Looks up external IP address via web service

Description Indicator Process Target
N/A icanhazip.com N/A N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1560 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 1560 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 1560 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 1560 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 1560 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 1560 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 1560 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 1560 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 1560 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 1536 wrote to memory of 472 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 1536 wrote to memory of 472 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 1536 wrote to memory of 472 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 1536 wrote to memory of 472 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 1536 wrote to memory of 472 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 1536 wrote to memory of 472 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 1536 wrote to memory of 472 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 1536 wrote to memory of 472 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 1536 wrote to memory of 472 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\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-1-5-21-1283023626-844874658-3193756055-1000\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\SOLICITUD DE PRESUPUESTO-21-04-23.exe

"C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe"

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

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.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 icanhazip.com udp
US 104.18.114.97:80 icanhazip.com tcp

Files

memory/1560-54-0x0000000000CE0000-0x0000000000D0C000-memory.dmp

memory/1560-55-0x0000000000540000-0x0000000000550000-memory.dmp

memory/1536-56-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1536-57-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1536-58-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1536-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1536-61-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1536-63-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1536-66-0x0000000000400000-0x0000000000424000-memory.dmp

memory/472-68-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/472-69-0x0000000000090000-0x00000000000AA000-memory.dmp

memory/472-67-0x0000000000090000-0x00000000000AA000-memory.dmp

memory/472-71-0x0000000000090000-0x00000000000AA000-memory.dmp

memory/472-73-0x0000000000090000-0x00000000000AA000-memory.dmp

memory/472-74-0x0000000001340000-0x0000000001380000-memory.dmp

memory/1536-75-0x0000000000400000-0x0000000000424000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-04-21 09:37

Reported

2023-04-21 09:40

Platform

win10v2004-20230220-en

Max time kernel

150s

Max time network

137s

Command Line

"C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe"

Signatures

BluStealer

stealer blustealer

StormKitty

stealer stormkitty

StormKitty payload

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

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Looks up external IP address via web service

Description Indicator Process Target
N/A icanhazip.com N/A N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4896 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 4896 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 4896 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 4896 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 4896 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 4896 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 4896 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 4896 wrote to memory of 2792 N/A C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
PID 2792 wrote to memory of 1000 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2792 wrote to memory of 1000 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2792 wrote to memory of 1000 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2792 wrote to memory of 1000 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2792 wrote to memory of 1000 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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-1-5-21-1013461898-3711306144-4198452673-1000\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\SOLICITUD DE PRESUPUESTO-21-04-23.exe

"C:\Users\Admin\AppData\Local\Temp\SOLICITUD DE PRESUPUESTO-21-04-23.exe"

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

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.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 icanhazip.com udp
US 104.18.114.97:80 icanhazip.com tcp
US 8.8.8.8:53 97.114.18.104.in-addr.arpa udp
US 8.8.8.8:53 108.211.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
IE 20.50.73.11:443 tcp
US 8.8.8.8:53 0.77.109.52.in-addr.arpa udp
NL 8.238.21.126:80 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 131.253.33.203:80 tcp

Files

memory/4896-133-0x000002254E1E0000-0x000002254E20C000-memory.dmp

memory/2792-134-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2792-137-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1000-140-0x0000000000C30000-0x0000000000C4A000-memory.dmp

memory/2792-141-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1000-142-0x0000000005240000-0x00000000052A6000-memory.dmp

memory/1000-143-0x0000000005C90000-0x0000000005D2C000-memory.dmp

memory/1000-145-0x0000000005230000-0x0000000005240000-memory.dmp

memory/2792-146-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1000-147-0x0000000005230000-0x0000000005240000-memory.dmp