Malware Analysis Report

2025-08-05 16:34

Sample ID 210615-e8try9kdqj
Target f3e3749dc20de17ac7dc81660287e205b35811fcc497701e2eb291dffb578352
SHA256 f3e3749dc20de17ac7dc81660287e205b35811fcc497701e2eb291dffb578352
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

f3e3749dc20de17ac7dc81660287e205b35811fcc497701e2eb291dffb578352

Threat Level: Known bad

The file f3e3749dc20de17ac7dc81660287e205b35811fcc497701e2eb291dffb578352 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 16:18

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-06-15 16:18

Reported

2021-06-15 16:21

Platform

win10v20210410

Max time kernel

18s

Max time network

112s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f3e3749dc20de17ac7dc81660287e205b35811fcc497701e2eb291dffb578352.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 4012 wrote to memory of 1972 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4012 wrote to memory of 1972 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4012 wrote to memory of 1972 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\f3e3749dc20de17ac7dc81660287e205b35811fcc497701e2eb291dffb578352.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f3e3749dc20de17ac7dc81660287e205b35811fcc497701e2eb291dffb578352.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1972 -s 676

Network

N/A

Files

memory/1972-114-0x0000000000000000-mapping.dmp

memory/1972-115-0x0000000073660000-0x0000000073690000-memory.dmp

memory/1972-117-0x00000000007F0000-0x00000000007F6000-memory.dmp