Malware Analysis Report

2024-09-22 16:46

Sample ID 220328-sz3bgafgap
Target 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b
SHA256 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b
Tags
darkvnc rat suricata
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

3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b

Threat Level: Known bad

The file 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b was found to be: Known bad.

Malicious Activity Summary

darkvnc rat suricata

suricata: ET MALWARE VNCStartServer BOT Variant CnC Beacon

DarkVNC

suricata: ET MALWARE VNCStartServer USR Variant CnC Beacon

DarkVNC Payload

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V6

Analysis: static1

Detonation Overview

Reported

2022-03-28 15:34

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-03-28 15:34

Reported

2022-03-28 17:24

Platform

win7-20220310-en

Max time kernel

4294183s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe"

Signatures

DarkVNC

rat darkvnc

suricata: ET MALWARE VNCStartServer BOT Variant CnC Beacon

suricata

suricata: ET MALWARE VNCStartServer USR Variant CnC Beacon

suricata

DarkVNC Payload

rat
Description Indicator Process Target
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 1704 set thread context of 2000 N/A C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe C:\Windows\system32\WerFault.exe

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe

"C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

Network

Country Destination Domain Proto
DE 45.147.229.254:443 tcp
DE 45.147.229.254:443 tcp

Files

memory/1704-54-0x00000000750C1000-0x00000000750C3000-memory.dmp

memory/1704-55-0x0000000002580000-0x0000000002B10000-memory.dmp

memory/1704-56-0x0000000000400000-0x00000000004AD000-memory.dmp

memory/1704-59-0x0000000010000000-0x0000000010089000-memory.dmp

memory/2000-62-0x0000000000000000-mapping.dmp

memory/1704-63-0x0000000000400000-0x00000000004AD000-memory.dmp

memory/1704-64-0x00000000030C0000-0x0000000003200000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-03-28 15:34

Reported

2022-03-28 17:24

Platform

win10v2004-20220310-en

Max time kernel

130s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe"

Signatures

DarkVNC

rat darkvnc

suricata: ET MALWARE VNCStartServer BOT Variant CnC Beacon

suricata

suricata: ET MALWARE VNCStartServer USR Variant CnC Beacon

suricata

DarkVNC Payload

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3456 set thread context of 4124 N/A C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe C:\Windows\system32\WerFault.exe

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe

"C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 licensing.mp.microsoft.com udp
US 20.223.25.224:443 licensing.mp.microsoft.com tcp
US 8.8.8.8:53 storesdk.dsx.mp.microsoft.com udp
FR 2.18.109.224:443 storesdk.dsx.mp.microsoft.com tcp
US 20.223.25.224:443 licensing.mp.microsoft.com tcp
US 20.223.25.224:443 licensing.mp.microsoft.com tcp
US 20.223.25.224:443 licensing.mp.microsoft.com tcp
DE 45.147.229.254:443 tcp
DE 45.147.229.254:443 tcp
FR 2.22.22.73:80 tcp

Files

memory/3456-134-0x0000000002BE0000-0x0000000003170000-memory.dmp

memory/3456-135-0x0000000000400000-0x00000000004AD000-memory.dmp

memory/4124-138-0x0000000000000000-mapping.dmp

memory/3456-139-0x0000000000400000-0x00000000004AD000-memory.dmp

memory/3456-140-0x0000000000400000-0x00000000004AD000-memory.dmp

memory/3456-141-0x0000000003840000-0x0000000003980000-memory.dmp