Malware Analysis Report

2025-01-03 03:02

Sample ID 241121-acjxhaxbln
Target e11547db899baadb5a40d9e624779d42a76ae3a7f3fcfe69c94e9e0d4783c32e.exe
SHA256 e11547db899baadb5a40d9e624779d42a76ae3a7f3fcfe69c94e9e0d4783c32e
Tags
darkvnc discovery rat
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

e11547db899baadb5a40d9e624779d42a76ae3a7f3fcfe69c94e9e0d4783c32e

Threat Level: Known bad

The file e11547db899baadb5a40d9e624779d42a76ae3a7f3fcfe69c94e9e0d4783c32e.exe was found to be: Known bad.

Malicious Activity Summary

darkvnc discovery rat

DarkVNC

Darkvnc family

DarkVNC payload

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-21 00:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-21 00:03

Reported

2024-11-21 00:06

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e11547db899baadb5a40d9e624779d42a76ae3a7f3fcfe69c94e9e0d4783c32e.dll,#1

Signatures

DarkVNC

rat darkvnc

Darkvnc family

darkvnc

DarkVNC payload

rat
Description Indicator Process Target
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

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e11547db899baadb5a40d9e624779d42a76ae3a7f3fcfe69c94e9e0d4783c32e.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e11547db899baadb5a40d9e624779d42a76ae3a7f3fcfe69c94e9e0d4783c32e.dll,#1

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

Network

N/A

Files

memory/2356-0-0x0000000074EE3000-0x0000000074EE7000-memory.dmp

memory/2356-3-0x0000000074D90000-0x0000000074F81000-memory.dmp

memory/2356-1-0x0000000074D90000-0x0000000074F81000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-21 00:03

Reported

2024-11-21 00:06

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

140s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e11547db899baadb5a40d9e624779d42a76ae3a7f3fcfe69c94e9e0d4783c32e.dll,#1

Signatures

DarkVNC

rat darkvnc

Darkvnc family

darkvnc

DarkVNC payload

rat
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

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 1648 wrote to memory of 4416 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1648 wrote to memory of 4416 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1648 wrote to memory of 4416 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4416 wrote to memory of 1140 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\system32\WerFault.exe
PID 4416 wrote to memory of 1140 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\system32\WerFault.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e11547db899baadb5a40d9e624779d42a76ae3a7f3fcfe69c94e9e0d4783c32e.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e11547db899baadb5a40d9e624779d42a76ae3a7f3fcfe69c94e9e0d4783c32e.dll,#1

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4416 -ip 4416

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4416 -s 724

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 138.136.73.23.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

memory/4416-0-0x0000000075463000-0x0000000075467000-memory.dmp

memory/4416-1-0x0000000075310000-0x0000000075501000-memory.dmp

memory/4416-3-0x0000000075310000-0x0000000075501000-memory.dmp