Malware Analysis Report

2025-08-10 22:19

Sample ID 210615-h44f6f1nkn
Target b3d78d6c21ea50d5650cdde99862d23328ebbdb3019cca41459e79a6664c3316
SHA256 b3d78d6c21ea50d5650cdde99862d23328ebbdb3019cca41459e79a6664c3316
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

b3d78d6c21ea50d5650cdde99862d23328ebbdb3019cca41459e79a6664c3316

Threat Level: Known bad

The file b3d78d6c21ea50d5650cdde99862d23328ebbdb3019cca41459e79a6664c3316 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 11:23

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-06-15 11:23

Reported

2021-06-15 11:26

Platform

win10v20210410

Max time kernel

19s

Max time network

116s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b3d78d6c21ea50d5650cdde99862d23328ebbdb3019cca41459e79a6664c3316.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 3172 wrote to memory of 3568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3172 wrote to memory of 3568 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3172 wrote to memory of 3568 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\b3d78d6c21ea50d5650cdde99862d23328ebbdb3019cca41459e79a6664c3316.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b3d78d6c21ea50d5650cdde99862d23328ebbdb3019cca41459e79a6664c3316.dll,#1

Network

N/A

Files

memory/3568-114-0x0000000000000000-mapping.dmp

memory/3568-115-0x00000000736D0000-0x00000000736FE000-memory.dmp

memory/3568-117-0x0000000000860000-0x0000000000866000-memory.dmp