Malware Analysis Report

2024-10-23 19:26

Sample ID 240524-mlvftadh58
Target b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe
SHA256 b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687
Tags
asyncrat op rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687

Threat Level: Known bad

The file b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe was found to be: Known bad.

Malicious Activity Summary

asyncrat op rat

AsyncRat

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-24 10:33

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-24 10:33

Reported

2024-05-24 10:36

Platform

win7-20240221-en

Max time kernel

119s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe"

Signatures

AsyncRat

rat asyncrat

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1692 set thread context of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1692 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe

"C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe"

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

#system32

Network

Country Destination Domain Proto
GB 20.117.108.240:5612 tcp

Files

memory/1692-0-0x000000007439E000-0x000000007439F000-memory.dmp

memory/1692-1-0x0000000000290000-0x00000000002AE000-memory.dmp

memory/1692-2-0x0000000074390000-0x0000000074A7E000-memory.dmp

memory/2412-6-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2412-5-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2412-4-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2412-13-0x0000000000400000-0x0000000000412000-memory.dmp

memory/1692-14-0x0000000074390000-0x0000000074A7E000-memory.dmp

memory/2412-11-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2412-9-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2412-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2412-3-0x0000000000400000-0x0000000000412000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-24 10:33

Reported

2024-05-24 10:36

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe"

Signatures

AsyncRat

rat asyncrat

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3108 set thread context of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3108 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3108 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3108 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3108 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3108 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3108 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3108 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3108 wrote to memory of 2276 N/A C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe

"C:\Users\Admin\AppData\Local\Temp\b010fc8a5324e8c3f72bd5884f5f31cbc02dcb9df573cf5a82405560f4927687.exe"

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

#system32

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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.75:443 www.bing.com tcp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.75:443 www.bing.com tcp
US 8.8.8.8:53 75.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
GB 20.117.108.240:5612 tcp
US 8.8.8.8:53 240.108.117.20.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 200.79.70.13.in-addr.arpa udp

Files

memory/3108-0-0x000000007466E000-0x000000007466F000-memory.dmp

memory/3108-1-0x00000000002B0000-0x00000000002CE000-memory.dmp

memory/2276-2-0x0000000000400000-0x0000000000412000-memory.dmp

memory/3108-4-0x0000000074660000-0x0000000074E10000-memory.dmp

memory/2276-5-0x0000000074660000-0x0000000074E10000-memory.dmp

memory/2276-6-0x0000000074660000-0x0000000074E10000-memory.dmp

memory/2276-9-0x0000000005B00000-0x0000000005B9C000-memory.dmp

memory/2276-10-0x0000000006150000-0x00000000066F4000-memory.dmp

memory/2276-11-0x0000000005C10000-0x0000000005C76000-memory.dmp

memory/3108-12-0x0000000074660000-0x0000000074E10000-memory.dmp

memory/2276-13-0x0000000074660000-0x0000000074E10000-memory.dmp

memory/2276-14-0x0000000074660000-0x0000000074E10000-memory.dmp