Malware Analysis Report

2025-08-10 22:19

Sample ID 210615-qe5mfflzha
Target 781dc6ec8721a568f6e985830c3ad74300cebeccabba0676273bd2c7a77f4174
SHA256 781dc6ec8721a568f6e985830c3ad74300cebeccabba0676273bd2c7a77f4174
Tags
dridex 40112 botnet 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 Overview

score
10/10

SHA256

781dc6ec8721a568f6e985830c3ad74300cebeccabba0676273bd2c7a77f4174

Threat Level: Known bad

The file 781dc6ec8721a568f6e985830c3ad74300cebeccabba0676273bd2c7a77f4174 was found to be: Known bad.

Malicious Activity Summary

dridex 40112 botnet loader

Dridex

Dridex Loader

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

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

win10v20210408

Max time kernel

25s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\781dc6ec8721a568f6e985830c3ad74300cebeccabba0676273bd2c7a77f4174.dll,#1

Signatures

Dridex

botnet dridex

Dridex Loader

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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 804 wrote to memory of 1336 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 804 wrote to memory of 1336 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 804 wrote to memory of 1336 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\781dc6ec8721a568f6e985830c3ad74300cebeccabba0676273bd2c7a77f4174.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\781dc6ec8721a568f6e985830c3ad74300cebeccabba0676273bd2c7a77f4174.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1336 -s 684

Network

N/A

Files

memory/1336-114-0x0000000000000000-mapping.dmp

memory/1336-115-0x0000000074430000-0x0000000074460000-memory.dmp

memory/1336-117-0x00000000036C0000-0x00000000036E3000-memory.dmp