Malware Analysis Report

2025-01-18 04:58

Sample ID 220328-19yd9sfhg5
Target 49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd
SHA256 49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd
Tags
masslogger 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

49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd

Threat Level: Known bad

The file 49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd was found to be: Known bad.

Malicious Activity Summary

masslogger collection spyware stealer

MassLogger

MassLogger Main Payload

Drops startup file

Looks up external IP address via web service

Accesses Microsoft Outlook profiles

Suspicious use of SetThreadContext

AutoIT Executable

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: AddClipboardFormatListener

outlook_office_path

Suspicious use of FindShellTrayWindow

outlook_win_path

Suspicious use of SendNotifyMessage

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-03-28 22:21

Signatures

AutoIT Executable

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

Analysis: behavioral1

Detonation Overview

Submitted

2022-03-28 22:21

Reported

2022-03-29 18:08

Platform

win7-20220311-en

Max time kernel

4294179s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe"

Signatures

MassLogger

stealer spyware masslogger

MassLogger Main Payload

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

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mofcomp.url C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe N/A

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1776 set thread context of 760 N/A C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Suspicious behavior: AddClipboardFormatListener

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

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1776 wrote to memory of 760 N/A C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1776 wrote to memory of 760 N/A C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1776 wrote to memory of 760 N/A C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1776 wrote to memory of 760 N/A C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1776 wrote to memory of 760 N/A C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 760 wrote to memory of 452 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 760 wrote to memory of 452 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 760 wrote to memory of 452 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 760 wrote to memory of 452 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

outlook_office_path

Description Indicator Process Target
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

outlook_win_path

Description Indicator Process Target
Key queried \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe

"C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe"

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

"C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\MSBuild.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell" Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe'

Network

Country Destination Domain Proto
US 8.8.8.8:53 api.ipify.org udp
US 3.232.242.170:80 api.ipify.org tcp

Files

memory/1776-54-0x0000000075C41000-0x0000000075C43000-memory.dmp

memory/1776-55-0x0000000001150000-0x00000000011D1000-memory.dmp

memory/1776-56-0x0000000000160000-0x0000000000163000-memory.dmp

memory/760-57-0x000000000048190E-mapping.dmp

memory/760-58-0x0000000000400000-0x0000000000486000-memory.dmp

memory/452-59-0x0000000000000000-mapping.dmp

memory/760-61-0x0000000000605000-0x0000000000616000-memory.dmp

memory/452-62-0x000000006F2B0000-0x000000006F85B000-memory.dmp

memory/452-63-0x00000000023D0000-0x000000000301A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-03-28 22:21

Reported

2022-03-29 18:08

Platform

win10v2004-en-20220113

Max time kernel

128s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe

"C:\Users\Admin\AppData\Local\Temp\49f4342e228862604183cbb019d232bd60cba908799b1adbdd57b6b435d076dd.exe"

Network

Country Destination Domain Proto
US 13.107.21.200:443 tcp

Files

N/A