Malware Analysis Report

2024-09-22 16:45

Sample ID 240226-3bdcjsag88
Target a79c261f6fae161ede7489db34ca3813
SHA256 5895164454aba620b70384013953a9e1e8e0b90166bd5fb849275e42071f0025
Tags
darkvnc rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

5895164454aba620b70384013953a9e1e8e0b90166bd5fb849275e42071f0025

Threat Level: Known bad

The file a79c261f6fae161ede7489db34ca3813 was found to be: Known bad.

Malicious Activity Summary

darkvnc rat

DarkVNC

DarkVNC payload

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-02-26 23:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-26 23:20

Reported

2024-02-26 23:22

Platform

win7-20240221-en

Max time kernel

120s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a79c261f6fae161ede7489db34ca3813.exe"

Signatures

DarkVNC

rat darkvnc

DarkVNC payload

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2272 set thread context of 3000 N/A C:\Users\Admin\AppData\Local\Temp\a79c261f6fae161ede7489db34ca3813.exe C:\Windows\system32\WerFault.exe

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a79c261f6fae161ede7489db34ca3813.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a79c261f6fae161ede7489db34ca3813.exe

"C:\Users\Admin\AppData\Local\Temp\a79c261f6fae161ede7489db34ca3813.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

Network

N/A

Files

memory/2272-1-0x0000000000290000-0x0000000000390000-memory.dmp

memory/2272-4-0x0000000000940000-0x00000000009C8000-memory.dmp

memory/2272-3-0x0000000000400000-0x0000000000937000-memory.dmp

memory/3000-5-0x000007FFFFFD6000-0x000007FFFFFD7000-memory.dmp

memory/3000-7-0x0000000000080000-0x0000000000081000-memory.dmp

memory/3000-6-0x0000000001B30000-0x0000000001BFA000-memory.dmp

memory/3000-11-0x0000000001B30000-0x0000000001BFA000-memory.dmp

memory/2272-12-0x0000000000400000-0x0000000000937000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-26 23:20

Reported

2024-02-26 23:22

Platform

win10v2004-20240226-en

Max time kernel

92s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a79c261f6fae161ede7489db34ca3813.exe"

Signatures

DarkVNC

rat darkvnc

DarkVNC payload

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2976 wrote to memory of 3508 N/A C:\Users\Admin\AppData\Local\Temp\a79c261f6fae161ede7489db34ca3813.exe C:\Windows\system32\WerFault.exe
PID 2976 wrote to memory of 3508 N/A C:\Users\Admin\AppData\Local\Temp\a79c261f6fae161ede7489db34ca3813.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a79c261f6fae161ede7489db34ca3813.exe

"C:\Users\Admin\AppData\Local\Temp\a79c261f6fae161ede7489db34ca3813.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2976 -ip 2976

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2976 -s 548

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp

Files

memory/2976-1-0x0000000000960000-0x0000000000A60000-memory.dmp

memory/2976-2-0x0000000000B60000-0x0000000000BE8000-memory.dmp

memory/2976-4-0x0000000000400000-0x0000000000937000-memory.dmp

memory/2976-6-0x0000000000B60000-0x0000000000BE8000-memory.dmp