Malware Analysis Report

2024-09-22 06:58

Sample ID 240621-bm5sdsydpr
Target 612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe
SHA256 612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00
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

612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00

Threat Level: Known bad

The file 612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe 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 WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-21 01:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-21 01:16

Reported

2024-06-21 01:19

Platform

win7-20240220-en

Max time kernel

149s

Max time network

120s

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 2000 set thread context of 2940 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 2000 wrote to memory of 2940 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2000 wrote to memory of 2940 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2000 wrote to memory of 2940 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2000 wrote to memory of 2940 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2000 wrote to memory of 2940 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2000 wrote to memory of 2940 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2000 wrote to memory of 2940 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2000 wrote to memory of 2940 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2000 wrote to memory of 2940 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
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 127.0.0.1:7707 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 127.0.0.1:6606 tcp
N/A 127.0.0.1:7707 tcp
N/A 127.0.0.1:7707 tcp

Files

memory/2000-0-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

memory/2000-1-0x0000000000290000-0x00000000002EC000-memory.dmp

memory/2000-2-0x0000000000360000-0x0000000000372000-memory.dmp

memory/2000-3-0x0000000000450000-0x0000000000458000-memory.dmp

memory/2000-4-0x0000000074D80000-0x000000007546E000-memory.dmp

memory/2940-5-0x000000005A370000-0x000000005A38C000-memory.dmp

memory/2940-10-0x000000005A370000-0x000000005A38C000-memory.dmp

memory/2940-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/2940-8-0x000000005A370000-0x000000005A38C000-memory.dmp

memory/2940-7-0x000000005A370000-0x000000005A38C000-memory.dmp

memory/2940-19-0x000000005A370000-0x000000005A38C000-memory.dmp

memory/2940-16-0x000000005A370000-0x000000005A38C000-memory.dmp

memory/2000-21-0x0000000074D80000-0x000000007546E000-memory.dmp

memory/2940-20-0x000000005A370000-0x000000005A382000-memory.dmp

memory/2940-12-0x000000005A370000-0x000000005A38C000-memory.dmp

memory/2940-6-0x000000005A370000-0x000000005A38C000-memory.dmp

memory/2940-22-0x0000000074D80000-0x000000007546E000-memory.dmp

memory/2940-23-0x0000000074D80000-0x000000007546E000-memory.dmp

memory/2940-24-0x0000000074D80000-0x000000007546E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-21 01:16

Reported

2024-06-21 01:19

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

149s

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 2800 set thread context of 3956 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 2800 wrote to memory of 3956 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2800 wrote to memory of 3956 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2800 wrote to memory of 3956 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2800 wrote to memory of 3956 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2800 wrote to memory of 3956 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2800 wrote to memory of 3956 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2800 wrote to memory of 3956 N/A C:\Users\Admin\AppData\Local\Temp\612f8f59794cb8257af89ab138bb768a0578848f3b4359280070097aa62f8e00.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2800 wrote to memory of 3956 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 8.8.8.8.in-addr.arpa udp
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 127.0.0.1:7707 tcp
N/A 127.0.0.1:6606 tcp
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
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

Files

memory/2800-0-0x000000007495E000-0x000000007495F000-memory.dmp

memory/2800-1-0x00000000007E0000-0x000000000083C000-memory.dmp

memory/2800-2-0x0000000005130000-0x0000000005142000-memory.dmp

memory/2800-3-0x0000000074950000-0x0000000075100000-memory.dmp

memory/2800-4-0x00000000051D0000-0x00000000051D8000-memory.dmp

memory/3956-5-0x0000000033740000-0x000000003375D000-memory.dmp

memory/3956-7-0x0000000033740000-0x0000000033752000-memory.dmp

memory/3956-8-0x0000000074950000-0x0000000075100000-memory.dmp

memory/2800-9-0x0000000074950000-0x0000000075100000-memory.dmp

memory/3956-10-0x0000000074950000-0x0000000075100000-memory.dmp

memory/3956-11-0x0000000004D50000-0x0000000004DB6000-memory.dmp

memory/3956-12-0x0000000005160000-0x00000000051FC000-memory.dmp

memory/3956-13-0x0000000074950000-0x0000000075100000-memory.dmp

memory/3956-14-0x0000000074950000-0x0000000075100000-memory.dmp