Malware Analysis Report

2025-08-10 22:18

Sample ID 210615-bjjws4angx
Target d631fcb9537b4fc2ffb91a820c52c7587b6a8ae2a461bdb47f05e3b5acff4213
SHA256 d631fcb9537b4fc2ffb91a820c52c7587b6a8ae2a461bdb47f05e3b5acff4213
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

d631fcb9537b4fc2ffb91a820c52c7587b6a8ae2a461bdb47f05e3b5acff4213

Threat Level: Known bad

The file d631fcb9537b4fc2ffb91a820c52c7587b6a8ae2a461bdb47f05e3b5acff4213 was found to be: Known bad.

Malicious Activity Summary

dridex 40112 botnet loader

Dridex

Dridex Loader

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2021-06-15 11:29

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-06-15 11:29

Reported

2021-06-15 11:32

Platform

win10v20210408

Max time kernel

25s

Max time network

135s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\d631fcb9537b4fc2ffb91a820c52c7587b6a8ae2a461bdb47f05e3b5acff4213.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 1500 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 804 wrote to memory of 1500 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 804 wrote to memory of 1500 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\d631fcb9537b4fc2ffb91a820c52c7587b6a8ae2a461bdb47f05e3b5acff4213.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\d631fcb9537b4fc2ffb91a820c52c7587b6a8ae2a461bdb47f05e3b5acff4213.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1500 -s 680

Network

N/A

Files

memory/1500-114-0x0000000000000000-mapping.dmp

memory/1500-115-0x0000000074310000-0x0000000074340000-memory.dmp

memory/1500-117-0x00000000029E0000-0x0000000002A03000-memory.dmp