Malware Analysis Report

2025-01-18 15:44

Sample ID 240816-dxm2faseqb
Target d26b7d1cfe266ee11a35030cc47cc4c0N.exe
SHA256 29d931229ca1096e2ef16adc3b6987696c8fad472be637edba2e8e4b51d84276
Tags
dridex 22203 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

29d931229ca1096e2ef16adc3b6987696c8fad472be637edba2e8e4b51d84276

Threat Level: Known bad

The file d26b7d1cfe266ee11a35030cc47cc4c0N.exe was found to be: Known bad.

Malicious Activity Summary

dridex 22203 botnet discovery loader

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

2024-08-16 03:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-16 03:23

Reported

2024-08-16 03:25

Platform

win7-20240708-en

Max time kernel

117s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\d26b7d1cfe266ee11a35030cc47cc4c0N.dll,#1

Signatures

Dridex

botnet dridex

Dridex Loader

botnet loader
Description Indicator Process Target
N/A N/A N/A N/A
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\d26b7d1cfe266ee11a35030cc47cc4c0N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\d26b7d1cfe266ee11a35030cc47cc4c0N.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1708 -s 220

Network

N/A

Files

memory/1708-2-0x0000000000150000-0x0000000000156000-memory.dmp

memory/1708-0-0x00000000748E0000-0x000000007490F000-memory.dmp

memory/1708-3-0x00000000748E0000-0x000000007490F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-16 03:23

Reported

2024-08-16 03:25

Platform

win10v2004-20240802-en

Max time kernel

119s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\d26b7d1cfe266ee11a35030cc47cc4c0N.dll,#1

Signatures

Dridex

botnet dridex

Dridex Loader

botnet loader
Description Indicator Process Target
N/A N/A N/A N/A
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 4848 wrote to memory of 4852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4848 wrote to memory of 4852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4848 wrote to memory of 4852 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\d26b7d1cfe266ee11a35030cc47cc4c0N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\d26b7d1cfe266ee11a35030cc47cc4c0N.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4852 -ip 4852

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4852 -s 616

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 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp

Files

memory/4852-0-0x0000000000AC0000-0x0000000000AC6000-memory.dmp

memory/4852-1-0x0000000075600000-0x000000007562F000-memory.dmp

memory/4852-3-0x0000000000AC0000-0x0000000000AC6000-memory.dmp

memory/4852-2-0x0000000075600000-0x000000007562F000-memory.dmp