Malware Analysis Report

2024-09-22 16:46

Sample ID 220320-cl4z5segd3
Target cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88
SHA256 cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88
Tags
darkvnc rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88

Threat Level: Known bad

The file cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88 was found to be: Known bad.

Malicious Activity Summary

darkvnc rat

DarkVNC

DarkVNC Payload

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

Suspicious use of UnmapMainImage

MITRE ATT&CK Matrix V6

Analysis: static1

Detonation Overview

Reported

2022-03-20 02:10

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2022-03-20 02:10

Reported

2022-03-20 16:06

Platform

win10v2004-en-20220113

Max time kernel

135s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.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 SetThreadContext

Description Indicator Process Target
PID 2644 set thread context of 5088 N/A C:\Users\Admin\AppData\Local\Temp\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.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\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.exe

"C:\Users\Admin\AppData\Local\Temp\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
NL 178.79.208.1:80 tcp
NL 178.79.208.1:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 20.189.173.6:443 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp

Files

memory/2644-130-0x00000000025D0000-0x0000000002659000-memory.dmp

memory/2644-134-0x0000000000A50000-0x0000000000A51000-memory.dmp

memory/2644-133-0x0000000000400000-0x000000000047B000-memory.dmp

memory/2644-135-0x0000000000400000-0x000000000047B000-memory.dmp

memory/2644-136-0x0000000002A00000-0x0000000002B40000-memory.dmp

memory/5088-137-0x000001ACFD470000-0x000001ACFD471000-memory.dmp

memory/5088-138-0x000001ACFD390000-0x000001ACFD459000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-03-20 02:10

Reported

2022-03-20 16:06

Platform

win7-20220311-en

Max time kernel

4294212s

Max time network

164s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.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 SetThreadContext

Description Indicator Process Target
PID 1684 set thread context of 464 N/A C:\Users\Admin\AppData\Local\Temp\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.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\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.exe

"C:\Users\Admin\AppData\Local\Temp\cf04fc9db51e68544ae38d93ef517e8fff5c8a4e14d0c1628e7b9bcbf8286e88.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

Network

Country Destination Domain Proto
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp
US 64.44.141.42:80 tcp

Files

memory/1684-54-0x0000000075841000-0x0000000075843000-memory.dmp

memory/1684-55-0x0000000000400000-0x000000000047B000-memory.dmp

memory/1684-56-0x0000000001BD0000-0x0000000001BD1000-memory.dmp

memory/1684-57-0x0000000010000000-0x0000000010089000-memory.dmp

memory/1684-60-0x0000000000400000-0x000000000047B000-memory.dmp

memory/1684-61-0x0000000002790000-0x00000000028D0000-memory.dmp

memory/464-62-0x0000000000080000-0x0000000000081000-memory.dmp

memory/464-63-0x0000000000290000-0x0000000000359000-memory.dmp