Malware Analysis Report

2025-08-10 17:27

Sample ID 231213-1fckpsbad3
Target 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6
SHA256 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6
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

88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6

Threat Level: Known bad

The file 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6 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

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

Program crash

Unsigned PE

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

outlook_win_path

Suspicious use of WriteProcessMemory

outlook_office_path

Creates scheduled task(s)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-13 21:35

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 21:35

Reported

2023-12-13 21:37

Platform

win10-20231023-en

Max time kernel

124s

Max time network

130s

Command Line

"C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.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\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.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-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.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\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe N/A
File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe N/A
File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe N/A
File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe N/A

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.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-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe

"C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.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 2336 -s 1672

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 34.117.186.192:443 ipinfo.io tcp
US 8.8.8.8:53 192.186.117.34.in-addr.arpa udp
US 8.8.8.8:53 96.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 8.173.189.20.in-addr.arpa udp

Files

C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

MD5 98a8b379d7fdbecec19bd05d63f84e93
SHA1 b6aa54bf7c0d2248258a0c7bb2df9fb7febd7a0f
SHA256 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6
SHA512 fe04553cc807ed67b3cfd50dc7a678d553a417daccff390400c583c9d1d4e3909b1c679220908781988df1acf7a731caa2907bd3a24c80065b4d0e61f77c7691

C:\Users\Admin\AppData\Local\Temp\posterBoxwwAsG1b5PlO04\QdX9ITDLyCRBWeb Data

MD5 90a4e3db168e5bdc6b5e562ce7f41a06
SHA1 2bf235c33b3395caefc1b9f1a280f83422f94d40
SHA256 fdd37b06f981e619d6690edeaa17ba8d86c66cec9331632f3d9922bb2c6eabf5
SHA512 e30f0a67bbdc6507ac5babaa5fe1e0db7cde6b62812f6365fe83293e5fbba3f62db43c80c635a43b3b0ffb2e08ac2faf79eff0d3bea8e2aaaca6c55fb0833c0b

C:\Users\Admin\AppData\Local\Temp\grandUIAwwAsG1b5PlO04\information.txt

MD5 3d5b7cc0717deaccf7c2cc00a77eb15f
SHA1 eb117c6a48c5b7211ed98443b8a07358645b583c
SHA256 cbcd1c3a3955b9655752c28207c709e2d4df8f616eb98da82a61c2495a986cae
SHA512 8714f779302827c7eb1ee993515675daa86b01e38cb477c68c16cdbf70b0a434722ecef3744d34f2dda9f65f8c36154eb0f99e6f3d4ed22aed1f74ab102dfb07