Malware Analysis Report

2025-01-18 15:45

Sample ID 240826-cag18szelr
Target b1300405ab6f20ee1d4c6ae22e0531085daecdee0f74a60588d8618d8998c197
SHA256 b1300405ab6f20ee1d4c6ae22e0531085daecdee0f74a60588d8618d8998c197
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

b1300405ab6f20ee1d4c6ae22e0531085daecdee0f74a60588d8618d8998c197

Threat Level: Known bad

The file b1300405ab6f20ee1d4c6ae22e0531085daecdee0f74a60588d8618d8998c197 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 01:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-26 01:52

Reported

2024-08-26 01:54

Platform

win7-20240705-en

Max time kernel

54s

Max time network

123s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1300405ab6f20ee1d4c6ae22e0531085daecdee0f74a60588d8618d8998c197.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 2060 wrote to memory of 2780 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2060 wrote to memory of 2780 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2060 wrote to memory of 2780 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2060 wrote to memory of 2780 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2060 wrote to memory of 2780 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2060 wrote to memory of 2780 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2060 wrote to memory of 2780 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\b1300405ab6f20ee1d4c6ae22e0531085daecdee0f74a60588d8618d8998c197.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1300405ab6f20ee1d4c6ae22e0531085daecdee0f74a60588d8618d8998c197.dll,#1

Network

N/A

Files

memory/2780-1-0x0000000000190000-0x0000000000196000-memory.dmp

memory/2780-0-0x0000000074F40000-0x0000000074F6E000-memory.dmp

memory/2780-2-0x0000000074F40000-0x0000000074F6E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-26 01:52

Reported

2024-08-26 01:54

Platform

win10v2004-20240802-en

Max time kernel

78s

Max time network

123s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1300405ab6f20ee1d4c6ae22e0531085daecdee0f74a60588d8618d8998c197.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 4376 wrote to memory of 3796 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4376 wrote to memory of 3796 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4376 wrote to memory of 3796 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\b1300405ab6f20ee1d4c6ae22e0531085daecdee0f74a60588d8618d8998c197.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1300405ab6f20ee1d4c6ae22e0531085daecdee0f74a60588d8618d8998c197.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/3796-0-0x00000000025D0000-0x00000000025D6000-memory.dmp

memory/3796-1-0x0000000074A50000-0x0000000074A7E000-memory.dmp

memory/3796-3-0x00000000025D0000-0x00000000025D6000-memory.dmp

memory/3796-2-0x0000000074A50000-0x0000000074A7E000-memory.dmp