Malware Analysis Report

2025-05-28 17:23

Sample ID 250519-s3715a1js5
Target InstallUIWrapper.exe
SHA256 231bfde8998a636f07615261a69490f809d77a031430b21770b9fd3f6063ecc6
Tags
latrodectus loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

231bfde8998a636f07615261a69490f809d77a031430b21770b9fd3f6063ecc6

Threat Level: Known bad

The file InstallUIWrapper.exe was found to be: Known bad.

Malicious Activity Summary

latrodectus loader

Latrodectus family

Latrodectus loader

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2025-05-19 15:40

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-05-19 15:40

Reported

2025-05-19 15:42

Platform

win10v2004-20250502-en

Max time kernel

98s

Max time network

139s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\InstallUIWrapper.dll,#1

Signatures

Latrodectus family

latrodectus

Latrodectus loader

loader latrodectus

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\InstallUIWrapper.dll,#1

Network

Country Destination Domain Proto
GB 2.18.27.82:443 www.bing.com tcp
GB 2.18.27.82:443 www.bing.com tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 c.pki.goog udp
GB 216.58.201.99:80 c.pki.goog tcp

Files

memory/3036-0-0x000001CE32630000-0x000001CE342E2000-memory.dmp

memory/3036-3-0x000001CE32630000-0x000001CE342E2000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-05-19 15:40

Reported

2025-05-19 15:42

Platform

win11-20250502-en

Max time kernel

101s

Max time network

102s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\InstallUIWrapper.dll,#1

Signatures

Latrodectus family

latrodectus

Latrodectus loader

loader latrodectus

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\InstallUIWrapper.dll,#1

Network

Files

memory/4740-0-0x0000021F95550000-0x0000021F97202000-memory.dmp

memory/4740-3-0x0000021F95550000-0x0000021F97202000-memory.dmp