Malware Analysis Report

2024-09-22 16:45

Sample ID 230129-xm664sbe7w
Target 67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9
SHA256 67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9
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

67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9

Threat Level: Known bad

The file 67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9 was found to be: Known bad.

Malicious Activity Summary

darkvnc rat

DarkVNC

DarkVNC payload

Suspicious use of SetThreadContext

Program crash

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Suspicious behavior: RenamesItself

MITRE ATT&CK Matrix V6

Analysis: static1

Detonation Overview

Reported

2023-01-29 18:59

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-01-29 18:59

Reported

2023-01-29 19:05

Platform

win7-20221111-en

Max time kernel

27s

Max time network

30s

Command Line

"C:\Users\Admin\AppData\Local\Temp\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1364 set thread context of 1328 N/A C:\Users\Admin\AppData\Local\Temp\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.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\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.exe

"C:\Users\Admin\AppData\Local\Temp\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

Network

N/A

Files

memory/1364-55-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

memory/1364-56-0x0000000000400000-0x0000000000881000-memory.dmp

memory/1364-57-0x0000000010000000-0x0000000010089000-memory.dmp

memory/1328-60-0x0000000000000000-mapping.dmp

memory/1364-61-0x0000000000230000-0x0000000000330000-memory.dmp

memory/1364-62-0x0000000000890000-0x0000000000908000-memory.dmp

memory/1364-63-0x0000000000400000-0x0000000000881000-memory.dmp

memory/1364-64-0x0000000000400000-0x0000000000881000-memory.dmp

memory/1364-65-0x0000000000400000-0x0000000000881000-memory.dmp

memory/1328-66-0x0000000001B30000-0x0000000001BF9000-memory.dmp

memory/1364-67-0x0000000000400000-0x000000000044D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-01-29 18:59

Reported

2023-01-29 19:05

Platform

win10v2004-20220812-en

Max time kernel

75s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.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 3260 set thread context of 2624 N/A C:\Users\Admin\AppData\Local\Temp\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.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\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.exe

"C:\Users\Admin\AppData\Local\Temp\67228849b80880ab0bd4d4b6c59c15ce97e13d790aed826b7558a888492652c9.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3260 -ip 3260

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3260 -s 628

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3260 -ip 3260

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3260 -s 676

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3260 -ip 3260

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3260 -s 668

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3260 -ip 3260

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3260 -s 796

Network

Country Destination Domain Proto
N/A 8.238.111.126:80 tcp
N/A 8.238.111.126:80 tcp

Files

memory/3260-132-0x00000000009E3000-0x0000000000A33000-memory.dmp

memory/3260-133-0x0000000000890000-0x0000000000908000-memory.dmp

memory/3260-134-0x0000000000400000-0x0000000000881000-memory.dmp

memory/3260-135-0x00000000009E3000-0x0000000000A33000-memory.dmp

memory/3260-136-0x0000000000890000-0x0000000000908000-memory.dmp

memory/3260-137-0x0000000000400000-0x0000000000881000-memory.dmp

memory/3260-138-0x0000000000400000-0x0000000000881000-memory.dmp

memory/3260-140-0x0000000000450000-0x00000000004D9000-memory.dmp

memory/3260-142-0x0000000000400000-0x0000000000881000-memory.dmp

memory/3260-143-0x0000000000400000-0x0000000000881000-memory.dmp

memory/3260-144-0x0000000000400000-0x0000000000881000-memory.dmp

memory/2624-145-0x0000000000000000-mapping.dmp

memory/2624-146-0x00000198779A0000-0x0000019877A69000-memory.dmp

memory/3260-147-0x00000000009E3000-0x0000000000A33000-memory.dmp

memory/3260-148-0x0000000000400000-0x000000000044D000-memory.dmp

memory/2624-149-0x00000198779A0000-0x0000019877A69000-memory.dmp