Malware Analysis Report

2025-01-18 15:58

Sample ID 240305-btwhasbb43
Target b36d3e6810ca49ac83ff8ac03e86944e
SHA256 8c6a797b103fed118c9b478e27a814da8fb5f7950f3d3526da6b48a6b8a218f3
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

8c6a797b103fed118c9b478e27a814da8fb5f7950f3d3526da6b48a6b8a218f3

Threat Level: Known bad

The file b36d3e6810ca49ac83ff8ac03e86944e 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 01:26

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-05 01:26

Reported

2024-03-05 01:29

Platform

win7-20240220-en

Max time kernel

141s

Max time network

126s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b36d3e6810ca49ac83ff8ac03e86944e.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

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b36d3e6810ca49ac83ff8ac03e86944e.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b36d3e6810ca49ac83ff8ac03e86944e.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1120 -s 300

Network

N/A

Files

memory/1120-0-0x0000000074900000-0x0000000074930000-memory.dmp

memory/1120-1-0x00000000001B0000-0x00000000001B6000-memory.dmp

memory/1120-2-0x0000000074900000-0x0000000074930000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-05 01:26

Reported

2024-03-05 01:29

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b36d3e6810ca49ac83ff8ac03e86944e.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 1592 wrote to memory of 2996 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1592 wrote to memory of 2996 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1592 wrote to memory of 2996 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\b36d3e6810ca49ac83ff8ac03e86944e.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b36d3e6810ca49ac83ff8ac03e86944e.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2996 -ip 2996

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2996 -s 692

Network

Country Destination Domain Proto
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net 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 8.8.8.8:53 211.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
GB 96.17.178.176:80 tcp

Files

memory/2996-1-0x00000000028A0000-0x00000000028A6000-memory.dmp

memory/2996-0-0x0000000074E90000-0x0000000074EC0000-memory.dmp