Malware Analysis Report

2025-01-18 15:56

Sample ID 240305-s3ve2aac4s
Target b50f3d95d101edb479eb8590ed5ee773
SHA256 ba8283032be561d0f1304dd3199b6e3959e4f2f57b84fa295a82bac8517eff0c
Tags
dridex 22201 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

ba8283032be561d0f1304dd3199b6e3959e4f2f57b84fa295a82bac8517eff0c

Threat Level: Known bad

The file b50f3d95d101edb479eb8590ed5ee773 was found to be: Known bad.

Malicious Activity Summary

dridex 22201 botnet loader

Dridex

Dridex Loader

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-05 15:39

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-05 15:39

Reported

2024-03-05 15:42

Platform

win7-20240221-en

Max time kernel

142s

Max time network

124s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b50f3d95d101edb479eb8590ed5ee773.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

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b50f3d95d101edb479eb8590ed5ee773.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b50f3d95d101edb479eb8590ed5ee773.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 308

Network

N/A

Files

memory/2748-0-0x0000000075470000-0x00000000754A0000-memory.dmp

memory/2748-1-0x0000000000130000-0x0000000000136000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-05 15:39

Reported

2024-03-05 15:42

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

154s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b50f3d95d101edb479eb8590ed5ee773.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 WriteProcessMemory

Description Indicator Process Target
PID 1148 wrote to memory of 844 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1148 wrote to memory of 844 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1148 wrote to memory of 844 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\b50f3d95d101edb479eb8590ed5ee773.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b50f3d95d101edb479eb8590ed5ee773.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 844 -ip 844

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 844 -s 700

Network

Country Destination Domain Proto
US 8.8.8.8:53 3.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 189.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 100.5.17.2.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 195.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 17.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 187.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 58.189.79.40.in-addr.arpa udp

Files

memory/844-0-0x0000000074A90000-0x0000000074AC0000-memory.dmp

memory/844-1-0x0000000000850000-0x0000000000856000-memory.dmp