Malware Analysis Report

2024-09-22 16:46

Sample ID 230129-ybpncsbb33
Target 28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff
SHA256 28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff
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

28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff

Threat Level: Known bad

The file 28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff was found to be: Known bad.

Malicious Activity Summary

darkvnc rat

DarkVNC

DarkVNC payload

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

MITRE ATT&CK Matrix V6

Analysis: static1

Detonation Overview

Reported

2023-01-29 19:36

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-01-29 19:36

Reported

2023-01-29 19:39

Platform

win7-20221111-en

Max time kernel

54s

Max time network

33s

Command Line

"C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.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

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1736 wrote to memory of 1168 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 1168 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 1168 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 1168 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 668 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 668 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 668 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 668 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 668 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 668 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 668 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 668 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 668 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 668 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 1736 wrote to memory of 668 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 668 wrote to memory of 1016 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe
PID 668 wrote to memory of 1016 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe
PID 668 wrote to memory of 1016 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe
PID 668 wrote to memory of 1016 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe
PID 668 wrote to memory of 1016 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe
PID 668 wrote to memory of 1016 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe
PID 668 wrote to memory of 1016 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe

"C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe"

C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe

"{path}"

C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe

"{path}"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

Network

N/A

Files

memory/1736-54-0x0000000000970000-0x0000000000A4C000-memory.dmp

memory/1736-55-0x0000000075F01000-0x0000000075F03000-memory.dmp

memory/1736-56-0x0000000000410000-0x0000000000422000-memory.dmp

memory/1736-57-0x0000000005080000-0x0000000005146000-memory.dmp

memory/668-59-0x0000000000400000-0x0000000000478000-memory.dmp

memory/668-58-0x0000000000400000-0x0000000000478000-memory.dmp

memory/668-61-0x0000000000400000-0x0000000000478000-memory.dmp

memory/668-63-0x0000000000400000-0x0000000000478000-memory.dmp

memory/668-65-0x0000000000400000-0x0000000000478000-memory.dmp

memory/668-66-0x0000000000400000-0x0000000000478000-memory.dmp

memory/668-68-0x0000000000400000-0x0000000000478000-memory.dmp

memory/668-69-0x0000000000401000-mapping.dmp

memory/668-71-0x0000000000400000-0x0000000000478000-memory.dmp

memory/668-73-0x0000000000400000-0x0000000000478000-memory.dmp

memory/668-74-0x0000000000400000-0x0000000000478000-memory.dmp

memory/668-75-0x0000000000401000-0x000000000044A000-memory.dmp

memory/668-76-0x0000000010000000-0x0000000010089000-memory.dmp

memory/1016-79-0x0000000000000000-mapping.dmp

memory/668-80-0x0000000000400000-0x000000000044D000-memory.dmp

memory/668-81-0x0000000002700000-0x0000000002840000-memory.dmp

memory/668-82-0x0000000000401000-0x000000000044A000-memory.dmp

memory/1016-83-0x0000000001B40000-0x0000000001C09000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-01-29 19:36

Reported

2023-01-29 19:39

Platform

win10v2004-20220901-en

Max time kernel

130s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.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

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5052 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 5052 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 5052 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 5052 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 5052 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 5052 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 5052 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 5052 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 5052 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 5052 wrote to memory of 4640 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe
PID 4640 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe
PID 4640 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe
PID 4640 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe
PID 4640 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe
PID 4640 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe

"C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe"

C:\Users\Admin\AppData\Local\Temp\28537d41a0ef3e2bb3ba3419804d6f13070415190de476aaadca000b6af2fdff.exe

"{path}"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

Network

Country Destination Domain Proto
N/A 52.182.141.63:443 tcp
N/A 2.18.109.224:443 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 160.20.147.195:91 tcp
N/A 160.20.147.195:91 tcp
N/A 93.184.221.240:80 tcp
N/A 160.20.147.195:91 tcp
N/A 160.20.147.195:91 tcp
N/A 160.20.147.195:91 tcp
N/A 160.20.147.195:91 tcp

Files

memory/5052-132-0x0000000000D20000-0x0000000000DFC000-memory.dmp

memory/5052-133-0x0000000005ED0000-0x0000000006474000-memory.dmp

memory/5052-134-0x00000000057F0000-0x0000000005882000-memory.dmp

memory/5052-135-0x00000000057B0000-0x00000000057BA000-memory.dmp

memory/5052-136-0x0000000008FF0000-0x000000000908C000-memory.dmp

memory/4640-137-0x0000000000000000-mapping.dmp

memory/4640-138-0x0000000000400000-0x0000000000478000-memory.dmp

memory/4640-140-0x0000000000400000-0x0000000000478000-memory.dmp

memory/4640-141-0x0000000000400000-0x0000000000478000-memory.dmp

memory/4640-142-0x0000000000400000-0x0000000000478000-memory.dmp

memory/4640-143-0x0000000002A00000-0x0000000002A89000-memory.dmp

memory/2604-146-0x0000000000000000-mapping.dmp

memory/4640-147-0x0000000000401000-0x000000000044A000-memory.dmp

memory/4640-148-0x0000000000400000-0x000000000044D000-memory.dmp

memory/4640-149-0x00000000031C0000-0x0000000003300000-memory.dmp

memory/2604-150-0x00000294EC8D0000-0x00000294EC999000-memory.dmp

memory/2604-151-0x00000294EC8D0000-0x00000294EC999000-memory.dmp