Malware Analysis Report

2025-01-18 15:45

Sample ID 240826-ayz6lswfmj
Target c9e88a616529532688de111fc820e7f0N
SHA256 46d8fe4261130c8a575bfaca562b5a3f095cb3cc608be107444f3827a6a24336
Tags
dridex 111 botnet discovery loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

46d8fe4261130c8a575bfaca562b5a3f095cb3cc608be107444f3827a6a24336

Threat Level: Known bad

The file c9e88a616529532688de111fc820e7f0N was found to be: Known bad.

Malicious Activity Summary

dridex 111 botnet discovery loader

Dridex

Dridex Loader

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-26 00:37

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-26 00:37

Reported

2024-08-26 00:40

Platform

win7-20240705-en

Max time kernel

61s

Max time network

125s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c9e88a616529532688de111fc820e7f0N.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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2552 wrote to memory of 2536 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2552 wrote to memory of 2536 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2552 wrote to memory of 2536 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2552 wrote to memory of 2536 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2552 wrote to memory of 2536 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2552 wrote to memory of 2536 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2552 wrote to memory of 2536 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\c9e88a616529532688de111fc820e7f0N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c9e88a616529532688de111fc820e7f0N.dll,#1

Network

N/A

Files

memory/2536-0-0x0000000000100000-0x0000000000106000-memory.dmp

memory/2536-1-0x0000000074AC0000-0x0000000074AF1000-memory.dmp

memory/2536-3-0x0000000000100000-0x0000000000106000-memory.dmp

memory/2536-2-0x0000000074AC0000-0x0000000074AF1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-26 00:37

Reported

2024-08-26 00:40

Platform

win10v2004-20240802-en

Max time kernel

59s

Max time network

96s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c9e88a616529532688de111fc820e7f0N.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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2248 wrote to memory of 2432 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2248 wrote to memory of 2432 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2248 wrote to memory of 2432 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\c9e88a616529532688de111fc820e7f0N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c9e88a616529532688de111fc820e7f0N.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 58.99.105.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/2432-0-0x00000000009F0000-0x00000000009F6000-memory.dmp

memory/2432-1-0x0000000074BC0000-0x0000000074BF1000-memory.dmp

memory/2432-3-0x00000000009F0000-0x00000000009F6000-memory.dmp

memory/2432-4-0x0000000074BC0000-0x0000000074BF1000-memory.dmp