Malware Analysis Report

2025-08-05 12:23

Sample ID 231213-3msllsabcm
Target b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899
SHA256 b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899
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

b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899

Threat Level: Known bad

The file b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899 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

Checks installed software on the system

Looks up external IP address via web service

Adds Run key to start application

Drops file in System32 directory

Enumerates physical storage devices

Unsigned PE

Program crash

Suspicious behavior: EnumeratesProcesses

Creates scheduled task(s)

outlook_office_path

Suspicious use of WriteProcessMemory

Checks processor information in registry

outlook_win_path

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-13 23:38

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 23:38

Reported

2023-12-13 23:40

Platform

win10-20231129-en

Max time kernel

120s

Max time network

111s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.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\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.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\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.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\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.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\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.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\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.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\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.exe N/A
File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini C:\Users\Admin\AppData\Local\Temp\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.exe N/A
File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol C:\Users\Admin\AppData\Local\Temp\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.exe N/A
File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI C:\Users\Admin\AppData\Local\Temp\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.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\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.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\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.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\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.exe

"C:\Users\Admin\AppData\Local\Temp\b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899.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 4596 -s 1640

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 8.8.8.8:53 114.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp
US 8.8.8.8:53 129.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 201.201.50.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 1.181.190.20.in-addr.arpa udp

Files

C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

MD5 720b055fb9de507cf81c7f98a1e54ebd
SHA1 aa689e3bfd6f6c5cc3f98c6da53e8ec181d39e10
SHA256 b5d3f136f09a235c58e4571cd85f8a455ae710620f2c8816590e31c9de723899
SHA512 29febba7a189b5a0ba986178b378621828a68721b57fa34dc1ef32b9c1ca5f8dbc09c25f86090e03794a9aea24fc76f31a4460def21bed3a09bab1ca5015b5b7

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

MD5 8e8e7137325b5aa4e1206f338a7ccde7
SHA1 23a2d46d2812f664d8fff942d493e85afe5f6a27
SHA256 bbbd94e3e65b0cf446d3f651f1a557e479c2adc8c0c955a18addd89fcd7ffe25
SHA512 1512bc6ad27b5b794d44b2599ace04a325b32726a1c96e2f8a6f75d55c494e65a4cdd1ea241027d693cd54dc049ad4a23b2147bb1a49450b7949cc71dba06233

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

MD5 b0354819209b19e042ff88d081abdea7
SHA1 11ce46bff10a64e393ccdaf2b69c3984d3886972
SHA256 94d36f99f0436b36f1932edd4270ef8274123a272fd9b5b37e61e36cdc7e8572
SHA512 bd26d02326480a2f2a9e8749367f5c49225c427147e62e8a4e1a17746c09edf4129b596023a72f32b5050a7596dd86560bb1b28141572cf43aaf5936b5698014