Malware Analysis Report

2025-08-05 16:35

Sample ID 210615-4ekmtt4gea
Target 87f9eac0a228e857cd89332378a23763a7b7c49b79438d80588fbd45207285b5
SHA256 87f9eac0a228e857cd89332378a23763a7b7c49b79438d80588fbd45207285b5
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

87f9eac0a228e857cd89332378a23763a7b7c49b79438d80588fbd45207285b5

Threat Level: Known bad

The file 87f9eac0a228e857cd89332378a23763a7b7c49b79438d80588fbd45207285b5 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 15:20

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-06-15 15:20

Reported

2021-06-15 15:23

Platform

win10v20210410

Max time kernel

18s

Max time network

124s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\87f9eac0a228e857cd89332378a23763a7b7c49b79438d80588fbd45207285b5.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 4452 wrote to memory of 4524 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4452 wrote to memory of 4524 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4452 wrote to memory of 4524 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\87f9eac0a228e857cd89332378a23763a7b7c49b79438d80588fbd45207285b5.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\87f9eac0a228e857cd89332378a23763a7b7c49b79438d80588fbd45207285b5.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4524 -s 684

Network

N/A

Files

memory/4524-114-0x0000000000000000-mapping.dmp

memory/4524-115-0x0000000073820000-0x0000000073850000-memory.dmp

memory/4524-117-0x0000000001140000-0x0000000001146000-memory.dmp