Malware Analysis Report

2024-12-07 03:16

Sample ID 241114-f8dy1svgjp
Target a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe
SHA256 655a42ce44e971a78e5cb395b056a32e274eacc64a6137d23b6748f875eaf6a2
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

655a42ce44e971a78e5cb395b056a32e274eacc64a6137d23b6748f875eaf6a2

Threat Level: Known bad

The file a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe was found to be: Known bad.

Malicious Activity Summary

asyncrat default discovery rat

AsyncRat

Asyncrat family

Suspicious use of NtCreateUserProcessOtherParentProcess

Drops startup file

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-14 05:32

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-14 05:32

Reported

2024-11-14 05:34

Platform

win10v2004-20241007-en

Max time kernel

118s

Max time network

120s

Command Line

C:\Windows\Explorer.EXE

Signatures

AsyncRat

rat asyncrat

Asyncrat family

asyncrat

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 4896 created 3420 N/A C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe C:\Windows\Explorer.EXE

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Path.vbs C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4896 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 4896 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 4896 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 4896 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 4896 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 4896 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 4896 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
PID 4896 wrote to memory of 1008 N/A C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe

"C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 silenceme.duckdns.org udp
US 192.169.69.26:6606 silenceme.duckdns.org tcp
US 8.8.8.8:53 26.69.169.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 192.169.69.26:7707 silenceme.duckdns.org tcp
US 192.169.69.26:7707 silenceme.duckdns.org tcp
US 192.169.69.26:7707 silenceme.duckdns.org tcp
US 192.169.69.26:8808 silenceme.duckdns.org tcp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 181.129.81.91.in-addr.arpa udp
US 192.169.69.26:6606 silenceme.duckdns.org tcp
US 192.169.69.26:7707 silenceme.duckdns.org tcp
US 192.169.69.26:6606 silenceme.duckdns.org tcp
US 192.169.69.26:6606 silenceme.duckdns.org tcp
US 192.169.69.26:8808 silenceme.duckdns.org tcp
US 192.169.69.26:8808 silenceme.duckdns.org tcp
US 8.8.8.8:53 silenceme.duckdns.org udp
US 192.169.69.26:7707 silenceme.duckdns.org tcp
US 192.169.69.26:6606 silenceme.duckdns.org tcp
US 192.169.69.26:6606 silenceme.duckdns.org tcp
US 192.169.69.26:8808 silenceme.duckdns.org tcp
US 192.169.69.26:6606 silenceme.duckdns.org tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 192.169.69.26:8808 silenceme.duckdns.org tcp
US 192.169.69.26:8808 silenceme.duckdns.org tcp
US 192.169.69.26:7707 silenceme.duckdns.org tcp
US 192.169.69.26:6606 silenceme.duckdns.org tcp
US 192.169.69.26:8808 silenceme.duckdns.org tcp

Files

memory/4896-0-0x000000007536E000-0x000000007536F000-memory.dmp

memory/4896-1-0x0000000000210000-0x0000000000362000-memory.dmp

memory/4896-2-0x0000000004DD0000-0x0000000004EBA000-memory.dmp

memory/4896-3-0x0000000075360000-0x0000000075B10000-memory.dmp

memory/4896-4-0x0000000005470000-0x0000000005A14000-memory.dmp

memory/4896-5-0x0000000004F60000-0x0000000004FF2000-memory.dmp

memory/4896-41-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-59-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-69-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-67-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-65-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-63-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-61-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-57-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-55-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-53-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-51-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-49-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-47-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-45-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-43-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-37-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-35-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-33-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-31-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-27-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-25-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-23-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-21-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-17-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-15-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-13-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-11-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-9-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-7-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-6-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-39-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-29-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-19-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

memory/4896-1080-0x0000000075360000-0x0000000075B10000-memory.dmp

memory/4896-1081-0x0000000005030000-0x000000000508C000-memory.dmp

memory/4896-1082-0x0000000005090000-0x00000000050DC000-memory.dmp

memory/4896-1086-0x0000000075360000-0x0000000075B10000-memory.dmp

memory/4896-1087-0x0000000075360000-0x0000000075B10000-memory.dmp

memory/4896-1088-0x0000000005130000-0x0000000005184000-memory.dmp

memory/1008-1092-0x0000000000400000-0x0000000000416000-memory.dmp

memory/1008-1095-0x0000000075360000-0x0000000075B10000-memory.dmp

memory/4896-1094-0x0000000075360000-0x0000000075B10000-memory.dmp

memory/4896-1093-0x0000000075360000-0x0000000075B10000-memory.dmp

memory/1008-1096-0x0000000075360000-0x0000000075B10000-memory.dmp

memory/1008-1097-0x0000000075360000-0x0000000075B10000-memory.dmp

memory/1008-1098-0x0000000075360000-0x0000000075B10000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-14 05:32

Reported

2024-11-14 05:34

Platform

win7-20241023-en

Max time kernel

15s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe"

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Path.vbs C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe

"C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2412 -s 636

Network

N/A

Files

memory/2412-0-0x000000007440E000-0x000000007440F000-memory.dmp

memory/2412-1-0x00000000013D0000-0x0000000001522000-memory.dmp

memory/2412-2-0x0000000001200000-0x00000000012EA000-memory.dmp

memory/2412-3-0x0000000074400000-0x0000000074AEE000-memory.dmp

memory/2412-4-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-15-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-35-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-55-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-67-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-65-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-63-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-61-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-59-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-57-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-53-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-51-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-49-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-47-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-45-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-43-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-41-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-39-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-37-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-33-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-31-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-29-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-27-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-25-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-23-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-21-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-19-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-17-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-13-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-11-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-9-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-7-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-5-0x0000000001200000-0x00000000012E4000-memory.dmp

memory/2412-1078-0x0000000074400000-0x0000000074AEE000-memory.dmp

memory/2412-1079-0x00000000012F0000-0x000000000134C000-memory.dmp

memory/2412-1080-0x0000000001360000-0x00000000013AC000-memory.dmp

memory/2412-1081-0x0000000004D10000-0x0000000004D64000-memory.dmp

memory/2412-1084-0x0000000074400000-0x0000000074AEE000-memory.dmp