Malware Analysis Report

2025-08-05 12:23

Sample ID 231213-3jcqzsbfb8
Target 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8
SHA256 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8
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

4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8

Threat Level: Known bad

The file 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8 was found to be: Known bad.

Malicious Activity Summary

privateloader risepro collection discovery persistence spyware stealer

Privateloader family

Risepro family

Drops startup file

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Adds Run key to start application

Looks up external IP address via web service

Accesses Microsoft Outlook profiles

Checks installed software on the system

Drops file in System32 directory

Enumerates physical storage devices

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

outlook_win_path

Suspicious behavior: EnumeratesProcesses

outlook_office_path

Creates scheduled task(s)

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-13 23:32

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 23:32

Reported

2023-12-13 23:34

Platform

win10-20231129-en

Max time kernel

120s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe N/A
File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe N/A
File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe N/A
File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe

"C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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 400 -s 1564

Network

Country Destination Domain Proto
US 193.233.132.51:50500 tcp
US 8.8.8.8:53 51.132.233.193.in-addr.arpa udp
US 8.8.8.8:53 ipinfo.io udp
US 34.117.59.81:443 ipinfo.io tcp
US 8.8.8.8:53 81.59.117.34.in-addr.arpa udp
US 8.8.8.8:53 129.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 114.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 40.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.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 02dc5249be8e536161a443a119aa781b
SHA1 8f808253f7a6451b76fb9e8f3515572868992002
SHA256 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8
SHA512 b3fd530ae5c7f8f9fc09d9c39dae5304a83ea9ee021d5e8a5bf1ffe1e1e33dda9d5eddd119bbfc32b3c9bcb1ee81206876cd1bc2a4eec780196239405c5c482a

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

MD5 d540e45d4e0edb6aab5ed14cc52f1fa5
SHA1 0c9279b204416dfa86ee22993bd3325b5bc762b1
SHA256 ddd7cbb13ec9dca8859d1a0f54d3f326c0097a8d2809636d96d2e4d9cfa86153
SHA512 3dc3b50b4948f522f4746a0ef63cdc40995dad3a3ac901b277a37296a33eee2977121f7aa529d9ef7f0cb878c6e15fac6c5570f1e5f73e73b5379633bd0caf9f

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

MD5 e1ce00097c882afa32aa61fef7a4e8f1
SHA1 abbe19e445653472d7266248c55d90c164da3461
SHA256 ade308efb098b889ced8070ecf4f4423ce1771f342f74f295ef156f4bbcc627e
SHA512 badb7a724b94a0e1a408a94e930dbd5a172cfa0047e292f26aa5941e37c0d558a250c19f64e3c6cf46b0337ac7ce28ee031a649c13976330f92f8d8bb6b2e024