Malware Analysis Report

2025-06-16 02:14

Sample ID 240122-s5cyrsacbj
Target b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a
SHA256 b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a
Tags
asyncrat default discovery rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a

Threat Level: Known bad

The file b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a was found to be: Known bad.

Malicious Activity Summary

asyncrat default discovery rat

AsyncRat

Async RAT payload

Checks installed software on the system

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-22 15:42

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-22 15:42

Reported

2024-01-22 15:44

Platform

win7-20231215-en

Max time kernel

122s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a.exe

"C:\Users\Admin\AppData\Local\Temp\b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a.exe"

Network

N/A

Files

memory/2104-0-0x0000000140000000-0x000000014120C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-22 15:42

Reported

2024-01-22 15:44

Platform

win10v2004-20231222-en

Max time kernel

141s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Checks installed software on the system

discovery

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a.exe

"C:\Users\Admin\AppData\Local\Temp\b96617d3f0379867e608596d1b6e693df7e47c00cdf110afdd10aafd2c73c64a.exe"

Network

Country Destination Domain Proto
HK 198.44.167.139:443 198.44.167.139 tcp
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 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 152.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 139.167.44.198.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 16.234.44.23.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
HK 198.44.167.215:41352 tcp
US 8.8.8.8:53 215.167.44.198.in-addr.arpa udp
US 8.8.8.8:53 175.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp

Files

memory/1136-0-0x0000000047850000-0x0000000047858000-memory.dmp

memory/1136-3-0x0000000062E90000-0x0000000062EAE000-memory.dmp

memory/1136-5-0x00007FFEF83E0000-0x00007FFEF8EA1000-memory.dmp

memory/1136-6-0x0000000062F30000-0x0000000062F40000-memory.dmp

memory/1136-7-0x0000000062F30000-0x0000000062F40000-memory.dmp

memory/1136-8-0x0000000140000000-0x000000014120C000-memory.dmp

memory/1136-10-0x00007FFEF83E0000-0x00007FFEF8EA1000-memory.dmp

memory/1136-11-0x0000000062F30000-0x0000000062F40000-memory.dmp

memory/1136-12-0x0000000062F30000-0x0000000062F40000-memory.dmp

memory/1136-14-0x0000000062ED0000-0x0000000062EDA000-memory.dmp

memory/1136-15-0x00007FFF04340000-0x00007FFF04359000-memory.dmp

memory/1136-16-0x0000000062F30000-0x0000000062F40000-memory.dmp

memory/1136-17-0x0000000062F30000-0x0000000062F40000-memory.dmp

memory/1136-21-0x0000000062F30000-0x0000000062F40000-memory.dmp

memory/1136-22-0x0000000062F30000-0x0000000062F40000-memory.dmp

memory/1136-23-0x0000000140000000-0x000000014120C000-memory.dmp

memory/1136-30-0x0000000140000000-0x000000014120C000-memory.dmp