Malware Analysis Report

2025-08-10 17:27

Sample ID 231213-16l7tsbbh8
Target 38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8
SHA256 38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8
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

38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8

Threat Level: Known bad

The file 38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8 was found to be: Known bad.

Malicious Activity Summary

privateloader risepro collection discovery persistence spyware stealer

Risepro family

Privateloader family

Drops startup file

Reads user/profile data of web browsers

Reads user/profile data of local email clients

Accesses Microsoft Outlook profiles

Looks up external IP address via web service

Checks installed software on the system

Adds Run key to start application

Drops file in System32 directory

Program crash

Enumerates physical storage devices

Unsigned PE

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Creates scheduled task(s)

outlook_win_path

Suspicious use of WriteProcessMemory

outlook_office_path

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-13 22:15

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 22:15

Reported

2023-12-13 22:18

Platform

win10-20231129-en

Max time kernel

145s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.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\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.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-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.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 C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe N/A
File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe N/A
File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe N/A
File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.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\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.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-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe

"C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.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 WPDBusEnum

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

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

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 4048 -s 1620

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 96.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 57.110.18.2.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 146.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 196.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 44.246.107.13.in-addr.arpa udp
US 8.8.8.8:53 24.73.42.20.in-addr.arpa udp

Files

C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

MD5 17a1ef6fb792b61e5fc080c748eec520
SHA1 6b8686eb204358a8d3419cfd63a1eafe88c619f1
SHA256 ab367ba5b058797ef3b90bebe273aa298f9c0f9934848b40eb566fc003b2f95a
SHA512 b2a282e313b80f8db8b748c457f51c115513c156c11f34e8c38cc413621ff89f6e15030ec4dd531ec1059d104cb8403ee245ef24cb6683152d83fa4fecab6d96

C:\Users\Admin\AppData\Local\Temp\posterBoxF04mooeKi3OSz\QdX9ITDLyCRBWeb Data

MD5 8e8e7137325b5aa4e1206f338a7ccde7
SHA1 23a2d46d2812f664d8fff942d493e85afe5f6a27
SHA256 bbbd94e3e65b0cf446d3f651f1a557e479c2adc8c0c955a18addd89fcd7ffe25
SHA512 1512bc6ad27b5b794d44b2599ace04a325b32726a1c96e2f8a6f75d55c494e65a4cdd1ea241027d693cd54dc049ad4a23b2147bb1a49450b7949cc71dba06233

C:\Users\Admin\AppData\Local\Temp\grandUIAF04mooeKi3OSz\information.txt

MD5 e05aabe4efe7c2fd86896fb04e4f8610
SHA1 82d4d8ed4067033832df9f6b548363391eafbabe
SHA256 9c2a35565e2abec181fb8255f8e1c56169574ff0a04514c4a052a2070a5e3087
SHA512 b442b6cc1fa4786a3a607182b03d924b9a8358bfebde6faffe7166e328437dae1210721ad8df6ade275beb7edcb08e80b58f754715da3029900298bb0664bf96