Malware Analysis Report

2025-01-18 15:59

Sample ID 240301-e9xl3sda58
Target b05900afd64c21e09b66a2c1a664e85e
SHA256 e5e8ab3d1b4d8d5c95f5f35e140765d3e55c9523ba2fb8249a93075c99c64ab2
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

e5e8ab3d1b4d8d5c95f5f35e140765d3e55c9523ba2fb8249a93075c99c64ab2

Threat Level: Known bad

The file b05900afd64c21e09b66a2c1a664e85e 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

2024-03-01 04:38

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-01 04:38

Reported

2024-03-01 04:41

Platform

win10v2004-20240226-en

Max time kernel

141s

Max time network

157s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b05900afd64c21e09b66a2c1a664e85e.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 4772 wrote to memory of 4580 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4772 wrote to memory of 4580 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4772 wrote to memory of 4580 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\b05900afd64c21e09b66a2c1a664e85e.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b05900afd64c21e09b66a2c1a664e85e.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4580 -ip 4580

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4580 -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=4076 --field-trial-handle=3084,i,14217130992253490921,11543335378077656547,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp

Files

memory/4580-1-0x0000000000FA0000-0x0000000000FA6000-memory.dmp

memory/4580-0-0x0000000075760000-0x0000000075790000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-01 04:38

Reported

2024-03-01 04:41

Platform

win7-20240221-en

Max time kernel

144s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b05900afd64c21e09b66a2c1a664e85e.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\b05900afd64c21e09b66a2c1a664e85e.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b05900afd64c21e09b66a2c1a664e85e.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2940 -s 308

Network

N/A

Files

memory/2940-0-0x00000000752C0000-0x00000000752F0000-memory.dmp

memory/2940-1-0x00000000001D0000-0x00000000001D6000-memory.dmp