Malware Analysis Report

2025-08-05 16:35

Sample ID 210615-a3v3bkh2we
Target fd90b0922094ae1800d3d828d9efe0d31c7ee0b6be71b7b633a43528209efe7c
SHA256 fd90b0922094ae1800d3d828d9efe0d31c7ee0b6be71b7b633a43528209efe7c
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

fd90b0922094ae1800d3d828d9efe0d31c7ee0b6be71b7b633a43528209efe7c

Threat Level: Known bad

The file fd90b0922094ae1800d3d828d9efe0d31c7ee0b6be71b7b633a43528209efe7c 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 15:27

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-06-15 15:27

Reported

2021-06-15 15:30

Platform

win10v20210408

Max time kernel

27s

Max time network

134s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\fd90b0922094ae1800d3d828d9efe0d31c7ee0b6be71b7b633a43528209efe7c.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 1496 wrote to memory of 2068 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1496 wrote to memory of 2068 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1496 wrote to memory of 2068 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\fd90b0922094ae1800d3d828d9efe0d31c7ee0b6be71b7b633a43528209efe7c.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\fd90b0922094ae1800d3d828d9efe0d31c7ee0b6be71b7b633a43528209efe7c.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2068 -s 684

Network

N/A

Files

memory/2068-114-0x0000000000000000-mapping.dmp

memory/2068-115-0x0000000073990000-0x00000000739C0000-memory.dmp

memory/2068-117-0x0000000004C50000-0x0000000004C73000-memory.dmp