Malware Analysis Report

2025-08-05 12:23

Sample ID 231213-3kstlaabbn
Target 515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63
SHA256 515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63
Tags
collection discovery persistence spyware stealer privateloader risepro
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

515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63

Threat Level: Known bad

The file 515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63 was found to be: Known bad.

Malicious Activity Summary

collection discovery persistence spyware stealer privateloader risepro

Privateloader family

Risepro family

Reads user/profile data of web browsers

Reads user/profile data of local email clients

Drops startup file

Checks installed software on the system

Looks up external IP address via web service

Adds Run key to start application

Accesses Microsoft Outlook profiles

Drops file in System32 directory

Enumerates physical storage devices

Unsigned PE

Program crash

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

outlook_win_path

outlook_office_path

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-13 23:34

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 23:34

Reported

2023-12-13 23:37

Platform

win10-20231129-en

Max time kernel

138s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.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\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.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\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.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\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.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\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.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\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini C:\Users\Admin\AppData\Local\Temp\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.exe N/A
File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol C:\Users\Admin\AppData\Local\Temp\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.exe N/A
File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI C:\Users\Admin\AppData\Local\Temp\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.exe N/A
File opened for modification C:\Windows\System32\GroupPolicy C:\Users\Admin\AppData\Local\Temp\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.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\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.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\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.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\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.exe

"C:\Users\Admin\AppData\Local\Temp\515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63.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 3376 -s 1668

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 81.59.117.34.in-addr.arpa udp
US 8.8.8.8:53 96.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 114.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 41.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 82.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 44.246.107.13.in-addr.arpa udp
US 8.8.8.8:53 170.117.168.52.in-addr.arpa udp

Files

C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

MD5 7a4a84c58d52a6fe0876be53b9d26243
SHA1 ee59885d88b3f2370309add69bab06f35b80a7ed
SHA256 515dd9936c3f8877525d1a54b50a1f4da61f5ecb9617c3981709e4e3e8eb6c63
SHA512 98b731d704521317d1afa352f652dbf2ae88795c2e2c64c488e95f715480bb8a2123faadad343feef4c1aed5be527b514b074e19a20036e49f558653d3fbd18a

C:\Users\Admin\AppData\Local\Temp\posterBoxi5BrxqaO2Ca_W\QdX9ITDLyCRBWeb Data

MD5 8e8e7137325b5aa4e1206f338a7ccde7
SHA1 23a2d46d2812f664d8fff942d493e85afe5f6a27
SHA256 bbbd94e3e65b0cf446d3f651f1a557e479c2adc8c0c955a18addd89fcd7ffe25
SHA512 1512bc6ad27b5b794d44b2599ace04a325b32726a1c96e2f8a6f75d55c494e65a4cdd1ea241027d693cd54dc049ad4a23b2147bb1a49450b7949cc71dba06233

C:\Users\Admin\AppData\Local\Temp\grandUIAi5BrxqaO2Ca_W\information.txt

MD5 8af4b69be5b0ba844a9e94492236bab4
SHA1 8601c1600d185dee2aca292dcf61e2d72df2a56c
SHA256 8c7519625e27d8a1580e7cc65ccad7c239c9145e5985021a24eb3abf1849776d
SHA512 dd272c6c682d35b855429415652917d4ca05f16e7c836668fc83b1b733a70177bcb6c8c9785cefdc8400c0c1fdf543916490d0ee4a7ddfe1ca61d2b58518bc14