Malware Analysis Report

2024-11-30 22:14

Sample ID 241121-flk4tatlcr
Target 8ce6a5484b7bac3edbc4d2dd60ecedf443011f27a35665c9f4973bff741c20e4.exe
SHA256 8ce6a5484b7bac3edbc4d2dd60ecedf443011f27a35665c9f4973bff741c20e4
Tags
dridex 22201 botnet discovery loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

8ce6a5484b7bac3edbc4d2dd60ecedf443011f27a35665c9f4973bff741c20e4

Threat Level: Known bad

The file 8ce6a5484b7bac3edbc4d2dd60ecedf443011f27a35665c9f4973bff741c20e4.exe was found to be: Known bad.

Malicious Activity Summary

dridex 22201 botnet discovery loader

Dridex family

Dridex

Dridex Loader

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-21 04:57

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-21 04:57

Reported

2024-11-21 05:00

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\8ce6a5484b7bac3edbc4d2dd60ecedf443011f27a35665c9f4973bff741c20e4.dll,#1

Signatures

Dridex

botnet dridex

Dridex family

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\8ce6a5484b7bac3edbc4d2dd60ecedf443011f27a35665c9f4973bff741c20e4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\8ce6a5484b7bac3edbc4d2dd60ecedf443011f27a35665c9f4973bff741c20e4.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 244

Network

N/A

Files

memory/2384-0-0x0000000000350000-0x0000000000356000-memory.dmp

memory/2384-1-0x0000000074770000-0x000000007479F000-memory.dmp

memory/2384-3-0x0000000000350000-0x0000000000356000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-21 04:57

Reported

2024-11-21 05:00

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\8ce6a5484b7bac3edbc4d2dd60ecedf443011f27a35665c9f4973bff741c20e4.dll,#1

Signatures

Dridex

botnet dridex

Dridex family

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4744 wrote to memory of 628 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4744 wrote to memory of 628 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4744 wrote to memory of 628 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\8ce6a5484b7bac3edbc4d2dd60ecedf443011f27a35665c9f4973bff741c20e4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\8ce6a5484b7bac3edbc4d2dd60ecedf443011f27a35665c9f4973bff741c20e4.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 628 -ip 628

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 620

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/628-0-0x0000000000550000-0x0000000000556000-memory.dmp

memory/628-1-0x00000000753E0000-0x000000007540F000-memory.dmp

memory/628-3-0x0000000000550000-0x0000000000556000-memory.dmp