Malware Analysis Report

2025-01-18 15:45

Sample ID 240826-ak7crstdqh
Target c95131572adc4115f3ecbe21f537afa0N
SHA256 715b0799c3db5307a402611daafd191baabd2ba9d580f086fe42e20e5fed8e7c
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

715b0799c3db5307a402611daafd191baabd2ba9d580f086fe42e20e5fed8e7c

Threat Level: Known bad

The file c95131572adc4115f3ecbe21f537afa0N 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 00:17

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-26 00:17

Reported

2024-08-26 00:19

Platform

win7-20240704-en

Max time kernel

45s

Max time network

120s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c95131572adc4115f3ecbe21f537afa0N.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 2948 wrote to memory of 3052 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2948 wrote to memory of 3052 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2948 wrote to memory of 3052 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2948 wrote to memory of 3052 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2948 wrote to memory of 3052 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2948 wrote to memory of 3052 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2948 wrote to memory of 3052 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\c95131572adc4115f3ecbe21f537afa0N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c95131572adc4115f3ecbe21f537afa0N.dll,#1

Network

N/A

Files

memory/3052-0-0x00000000748E0000-0x0000000074911000-memory.dmp

memory/3052-2-0x0000000000130000-0x0000000000136000-memory.dmp

memory/3052-3-0x00000000748E0000-0x0000000074911000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-26 00:17

Reported

2024-08-26 00:19

Platform

win10v2004-20240802-en

Max time kernel

67s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c95131572adc4115f3ecbe21f537afa0N.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 4076 wrote to memory of 2464 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4076 wrote to memory of 2464 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4076 wrote to memory of 2464 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\c95131572adc4115f3ecbe21f537afa0N.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c95131572adc4115f3ecbe21f537afa0N.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.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
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp

Files

memory/2464-0-0x00000000758B0000-0x00000000758E1000-memory.dmp

memory/2464-2-0x00000000009B0000-0x00000000009B6000-memory.dmp

memory/2464-3-0x00000000758B0000-0x00000000758E1000-memory.dmp