Malware Analysis Report

2025-08-05 16:34

Sample ID 210615-821xx41tgn
Target 87dcb9b81332cd9cfad23d716ca126cd91b92eddc1318aebb8d574ef13b7724a
SHA256 87dcb9b81332cd9cfad23d716ca126cd91b92eddc1318aebb8d574ef13b7724a
Tags
dridex 40112 botnet evasion loader trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

87dcb9b81332cd9cfad23d716ca126cd91b92eddc1318aebb8d574ef13b7724a

Threat Level: Known bad

The file 87dcb9b81332cd9cfad23d716ca126cd91b92eddc1318aebb8d574ef13b7724a was found to be: Known bad.

Malicious Activity Summary

dridex 40112 botnet evasion loader trojan

Dridex

Dridex Loader

Checks whether UAC is enabled

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-06-15 16:18

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-06-15 16:18

Reported

2021-06-15 16:20

Platform

win10v20210410

Max time kernel

18s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\87dcb9b81332cd9cfad23d716ca126cd91b92eddc1318aebb8d574ef13b7724a.dll,#1

Signatures

Dridex

botnet dridex

Dridex Loader

botnet loader
Description Indicator Process Target
N/A N/A N/A N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 508 wrote to memory of 3748 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 508 wrote to memory of 3748 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 508 wrote to memory of 3748 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\87dcb9b81332cd9cfad23d716ca126cd91b92eddc1318aebb8d574ef13b7724a.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\87dcb9b81332cd9cfad23d716ca126cd91b92eddc1318aebb8d574ef13b7724a.dll,#1

Network

N/A

Files

memory/3748-114-0x0000000000000000-mapping.dmp

memory/3748-115-0x00000000739B0000-0x00000000739DE000-memory.dmp

memory/3748-117-0x00000000009A0000-0x00000000009A6000-memory.dmp