Malware Analysis Report

2025-01-18 16:00

Sample ID 240306-hat9fsed58
Target b6be23d29b562086a974ee3f08b0b78f
SHA256 a7c5140f360f130b216184dfd655c14aac99c36fb54654208cc4c5c713806234
Tags
dridex 22201 botnet loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a7c5140f360f130b216184dfd655c14aac99c36fb54654208cc4c5c713806234

Threat Level: Known bad

The file b6be23d29b562086a974ee3f08b0b78f was found to be: Known bad.

Malicious Activity Summary

dridex 22201 botnet loader

Dridex

Dridex Loader

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-06 06:32

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-06 06:32

Reported

2024-03-06 06:35

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

148s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6be23d29b562086a974ee3f08b0b78f.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 1724 wrote to memory of 2768 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1724 wrote to memory of 2768 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1724 wrote to memory of 2768 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\b6be23d29b562086a974ee3f08b0b78f.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6be23d29b562086a974ee3f08b0b78f.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2768 -ip 2768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2768 -s 688

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3404 --field-trial-handle=2232,i,11267738607351977302,107266978269557304,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp

Files

memory/2768-0-0x0000000002700000-0x0000000002706000-memory.dmp

memory/2768-1-0x0000000075130000-0x0000000075160000-memory.dmp

memory/2768-4-0x0000000002700000-0x0000000002706000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-06 06:32

Reported

2024-03-06 06:36

Platform

win7-20240221-en

Max time kernel

184s

Max time network

144s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6be23d29b562086a974ee3f08b0b78f.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\b6be23d29b562086a974ee3f08b0b78f.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6be23d29b562086a974ee3f08b0b78f.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2576 -s 308

Network

N/A

Files

memory/2576-0-0x0000000075260000-0x0000000075290000-memory.dmp

memory/2576-1-0x00000000001E0000-0x00000000001E6000-memory.dmp