Malware Analysis Report

2025-08-10 17:28

Sample ID 231213-1g342shecn
Target b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2
SHA256 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2
Tags
privateloader risepro collection discovery persistence spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2

Threat Level: Known bad

The file b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2 was found to be: Known bad.

Malicious Activity Summary

privateloader risepro collection discovery persistence spyware stealer

Privateloader family

Risepro family

Reads user/profile data of local email clients

Drops startup file

Reads user/profile data of web browsers

Checks installed software on the system

Accesses Microsoft Outlook profiles

Adds Run key to start application

Looks up external IP address via web service

Drops file in System32 directory

Unsigned PE

Program crash

Enumerates physical storage devices

Checks processor information in registry

outlook_win_path

outlook_office_path

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-13 21:38

Signatures

Privateloader family

privateloader

Risepro family

risepro

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-13 21:38

Reported

2023-12-13 21:40

Platform

win10-20231129-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe"

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FANBooster131.lnk C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A

Checks installed software on the system

discovery

Looks up external IP address via web service

Description Indicator Process Target
N/A ipinfo.io N/A N/A
N/A ipinfo.io N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A
File opened for modification C:\Windows\System32\GroupPolicy C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A
File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A
File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A

Creates scheduled task(s)

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

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe

"C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 HR" /sc HOURLY /rl HIGHEST

\??\c:\windows\system32\svchost.exe

c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 LG" /sc ONLOGON /rl HIGHEST

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4260 -s 1664

Network

Country Destination Domain Proto
US 193.233.132.51:50500 tcp
US 8.8.8.8:53 ipinfo.io udp
US 34.117.59.81:443 ipinfo.io tcp
US 8.8.8.8:53 51.132.233.193.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 81.59.117.34.in-addr.arpa udp
US 8.8.8.8:53 209.20.21.2.in-addr.arpa udp
US 8.8.8.8:53 150.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 67.112.168.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp
US 8.8.8.8:53 146.177.190.20.in-addr.arpa udp

Files

C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

MD5 f2cad6be8dedc7cbbc9b6ae90e0434af
SHA1 0885905ddd6e69e10176e2ca5123f82c2d0570e8
SHA256 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2
SHA512 53bd29c6f13481b3a4b824defc014531154d0322e0a77a9907ca8b99be0587c62db2a191f70c1fbc2d8df6540ec8bd396a301aa96e2feb687f75916723878cfa

C:\Users\Admin\AppData\Local\Temp\posterBoxCZnbeElwrl9_D\QdX9ITDLyCRBWeb Data

MD5 52c1c59f20f3b5384a8bced66c68e36d
SHA1 4cbc828116e54498871daccf4be75db441df0d9e
SHA256 38faf81c41c67d7edb345f0c380c9b1c56f76003f7fe4e3796aa5ac99c25e282
SHA512 aaaaad81d473693975461f88891c671d125b8b73807d87dbb158b6d0e6774e3cff5606d1692fc41906e3a29a84a55319163e424d528fc4605a518d6a3a677ec9

C:\Users\Admin\AppData\Local\Temp\grandUIACZnbeElwrl9_D\information.txt

MD5 aeb9a06705f5aa2cbe8939564a22085e
SHA1 5d6539ee3039a9ce948e398c2c2306129ba53393
SHA256 d1873016928379fb514e444ec99bb7d496b46e63e7080f223b5003fc036d6d47
SHA512 123e583a53b5f4082c0657daf35bf32ab8415c014dba4607aaedb0be7e606161ef55530a600acb25001d1b327d9908a1d83acf22790223f9d521689f01f771c1