Malware Analysis Report

2024-11-13 18:03

Sample ID 241109-1ebxsavrbr
Target aa17163a9063154feead2ea555f5ad8bdc520db2ccbf8fdb24483c150f7a2ee5N
SHA256 aa17163a9063154feead2ea555f5ad8bdc520db2ccbf8fdb24483c150f7a2ee5
Tags
dridex 22201 botnet discovery loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

aa17163a9063154feead2ea555f5ad8bdc520db2ccbf8fdb24483c150f7a2ee5

Threat Level: Known bad

The file aa17163a9063154feead2ea555f5ad8bdc520db2ccbf8fdb24483c150f7a2ee5N was found to be: Known bad.

Malicious Activity Summary

dridex 22201 botnet discovery loader

Dridex

Dridex family

Dridex Loader

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-09 21:33

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 21:33

Reported

2024-11-09 21:35

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

95s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa17163a9063154feead2ea555f5ad8bdc520db2ccbf8fdb24483c150f7a2ee5N.dll,#1

Signatures

Dridex

botnet dridex

Dridex family

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

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 4932 wrote to memory of 3356 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4932 wrote to memory of 3356 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4932 wrote to memory of 3356 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\aa17163a9063154feead2ea555f5ad8bdc520db2ccbf8fdb24483c150f7a2ee5N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa17163a9063154feead2ea555f5ad8bdc520db2ccbf8fdb24483c150f7a2ee5N.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3356 -ip 3356

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3356 -s 616

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 99.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/3356-0-0x0000000000B70000-0x0000000000B76000-memory.dmp

memory/3356-1-0x0000000075660000-0x000000007568F000-memory.dmp

memory/3356-2-0x0000000075660000-0x000000007568F000-memory.dmp

memory/3356-3-0x0000000000B70000-0x0000000000B76000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-09 21:33

Reported

2024-11-09 21:35

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa17163a9063154feead2ea555f5ad8bdc520db2ccbf8fdb24483c150f7a2ee5N.dll,#1

Signatures

Dridex

botnet dridex

Dridex family

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

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

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa17163a9063154feead2ea555f5ad8bdc520db2ccbf8fdb24483c150f7a2ee5N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\aa17163a9063154feead2ea555f5ad8bdc520db2ccbf8fdb24483c150f7a2ee5N.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3020 -s 220

Network

N/A

Files

memory/3020-0-0x0000000074680000-0x00000000746AF000-memory.dmp

memory/3020-2-0x0000000000150000-0x0000000000156000-memory.dmp

memory/3020-3-0x0000000074680000-0x00000000746AF000-memory.dmp