Malware Analysis Report

2024-09-22 06:59

Sample ID 240622-d8js6aweje
Target d3b40b51e542efb11ef776ccab1f76e6.bin
SHA256 47351bebbc43b3ad1124176f9b2b8c00010529fccad6ab03f5b7202e66044a39
Tags
asyncrat default 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

47351bebbc43b3ad1124176f9b2b8c00010529fccad6ab03f5b7202e66044a39

Threat Level: Known bad

The file d3b40b51e542efb11ef776ccab1f76e6.bin was found to be: Known bad.

Malicious Activity Summary

asyncrat default rat

AsyncRat

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-22 03:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-22 03:40

Reported

2024-06-22 03:43

Platform

win7-20240221-en

Max time kernel

148s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe"

Signatures

AsyncRat

rat asyncrat

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2732 set thread context of 2904 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2732 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2732 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2732 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2732 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2732 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2732 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2732 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2732 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2732 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe

"C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 matkapdark.ddns.org udp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:7707 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:7707 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:7707 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp

Files

memory/2732-0-0x00000000743AE000-0x00000000743AF000-memory.dmp

memory/2732-1-0x00000000011B0000-0x000000000120C000-memory.dmp

memory/2732-2-0x0000000000480000-0x0000000000492000-memory.dmp

memory/2732-3-0x00000000743A0000-0x0000000074A8E000-memory.dmp

memory/2732-4-0x0000000000900000-0x0000000000908000-memory.dmp

memory/2904-5-0x000000000FD50000-0x000000000FD6C000-memory.dmp

memory/2904-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/2904-8-0x000000000FD50000-0x000000000FD6C000-memory.dmp

memory/2904-7-0x000000000FD50000-0x000000000FD6C000-memory.dmp

memory/2904-6-0x000000000FD50000-0x000000000FD6C000-memory.dmp

memory/2904-10-0x000000000FD50000-0x000000000FD6C000-memory.dmp

memory/2904-19-0x000000000FD50000-0x000000000FD6C000-memory.dmp

memory/2904-16-0x000000000FD50000-0x000000000FD6C000-memory.dmp

memory/2904-20-0x000000000FD50000-0x000000000FD62000-memory.dmp

memory/2904-12-0x000000000FD50000-0x000000000FD6C000-memory.dmp

memory/2904-21-0x00000000743A0000-0x0000000074A8E000-memory.dmp

memory/2732-22-0x00000000743A0000-0x0000000074A8E000-memory.dmp

memory/2904-23-0x00000000743A0000-0x0000000074A8E000-memory.dmp

memory/2904-24-0x00000000743A0000-0x0000000074A8E000-memory.dmp

memory/2904-25-0x00000000743A0000-0x0000000074A8E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 03:40

Reported

2024-06-22 03:43

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe"

Signatures

AsyncRat

rat asyncrat

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 432 set thread context of 4900 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 432 wrote to memory of 4900 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 432 wrote to memory of 4900 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 432 wrote to memory of 4900 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 432 wrote to memory of 4900 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 432 wrote to memory of 4900 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 432 wrote to memory of 4900 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 432 wrote to memory of 4900 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 432 wrote to memory of 4900 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe

"C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 matkapdark.ddns.org udp
US 8.8.8.8:53 matkapdark.ddns.org udp
US 8.8.8.8:53 matkapdark.ddns.org udp
N/A 127.0.0.1:6606 tcp
US 8.8.8.8:53 matkapdark.ddns.org udp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
N/A 127.0.0.1:6606 tcp
US 8.8.8.8:53 matkapdark.ddns.org udp
N/A 127.0.0.1:7707 tcp
N/A 127.0.0.1:6606 tcp
US 8.8.8.8:53 matkapdark.ddns.org udp
N/A 127.0.0.1:7707 tcp
US 8.8.8.8:53 matkapdark.ddns.org udp
N/A 127.0.0.1:6606 tcp

Files

memory/432-0-0x000000007486E000-0x000000007486F000-memory.dmp

memory/432-1-0x0000000000570000-0x00000000005CC000-memory.dmp

memory/432-2-0x0000000004EB0000-0x0000000004EC2000-memory.dmp

memory/432-3-0x0000000074860000-0x0000000075010000-memory.dmp

memory/432-4-0x0000000004F50000-0x0000000004F58000-memory.dmp

memory/4900-5-0x000000005B040000-0x000000005B05F000-memory.dmp

memory/432-8-0x0000000074860000-0x0000000075010000-memory.dmp

memory/4900-7-0x000000005B040000-0x000000005B052000-memory.dmp

memory/4900-9-0x0000000074860000-0x0000000075010000-memory.dmp

memory/4900-10-0x0000000074860000-0x0000000075010000-memory.dmp

memory/4900-11-0x0000000004D90000-0x0000000004DF6000-memory.dmp

memory/4900-12-0x0000000005200000-0x000000000529C000-memory.dmp

memory/4900-13-0x0000000074860000-0x0000000075010000-memory.dmp

memory/4900-14-0x0000000074860000-0x0000000075010000-memory.dmp