Malware Analysis Report

2025-01-18 15:58

Sample ID 240304-d7v5sshg29
Target b120b488d9e15ba792f7e4b43c3cf767
SHA256 d8d318abb4daca458340003558695f4fe7a340393e14391e498ce3151d7e5c50
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

d8d318abb4daca458340003558695f4fe7a340393e14391e498ce3151d7e5c50

Threat Level: Known bad

The file b120b488d9e15ba792f7e4b43c3cf767 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

2024-03-04 03:39

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-04 03:39

Reported

2024-03-04 03:42

Platform

win10v2004-20240226-en

Max time kernel

115s

Max time network

144s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b120b488d9e15ba792f7e4b43c3cf767.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 4836 wrote to memory of 4580 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4836 wrote to memory of 4580 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4836 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\b120b488d9e15ba792f7e4b43c3cf767.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b120b488d9e15ba792f7e4b43c3cf767.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4580 -ip 4580

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4580 -s 692

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=4000 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 13.107.246.64:443 tcp
GB 142.250.200.10:443 tcp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp

Files

memory/4580-0-0x00000000757E0000-0x0000000075810000-memory.dmp

memory/4580-1-0x0000000001150000-0x0000000001156000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-04 03:39

Reported

2024-03-04 03:42

Platform

win7-20240221-en

Max time kernel

141s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b120b488d9e15ba792f7e4b43c3cf767.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\b120b488d9e15ba792f7e4b43c3cf767.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b120b488d9e15ba792f7e4b43c3cf767.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 308

Network

N/A

Files

memory/2200-0-0x00000000750A0000-0x00000000750D0000-memory.dmp

memory/2200-1-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/2200-2-0x00000000750A0000-0x00000000750D0000-memory.dmp