Malware Analysis Report

2024-09-22 07:33

Sample ID 240601-fdlqdaah99
Target 7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f
SHA256 7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f
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

7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f

Threat Level: Known bad

The file 7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f was found to be: Known bad.

Malicious Activity Summary

asyncrat default rat

AsyncRat

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Script User-Agent

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-01 04:45

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-01 04:45

Reported

2024-06-01 04:48

Platform

win10v2004-20240226-en

Max time kernel

143s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f.exe"

Signatures

AsyncRat

rat asyncrat

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 648 set thread context of 5008 N/A C:\Users\Admin\AppData\Local\Temp\7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

Script User-Agent

Description Indicator Process Target
HTTP User-Agent header Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) N/A N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f.exe

"C:\Users\Admin\AppData\Local\Temp\7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f.exe"

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

-arguments

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 648 -ip 648

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 648 -s 804

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4112 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
LT 176.223.130.167:80 176.223.130.167 tcp
US 8.8.8.8:53 167.130.223.176.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
N/A 192.168.1.2:1800 tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
N/A 192.168.1.2:1800 tcp
N/A 192.168.1.2:1800 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
N/A 192.168.1.2:1800 tcp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 216.58.204.74:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 74.204.58.216.in-addr.arpa udp
N/A 192.168.1.2:1800 tcp
N/A 192.168.1.2:1800 tcp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp

Files

memory/5008-2-0x0000000000400000-0x0000000000412000-memory.dmp

memory/5008-7-0x0000000074A5E000-0x0000000074A5F000-memory.dmp

memory/5008-8-0x0000000074A50000-0x0000000075200000-memory.dmp

memory/5008-9-0x0000000074A5E000-0x0000000074A5F000-memory.dmp

memory/5008-10-0x0000000074A50000-0x0000000075200000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-01 04:45

Reported

2024-06-01 04:48

Platform

win11-20240508-en

Max time kernel

144s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f.exe"

Signatures

AsyncRat

rat asyncrat

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1788 set thread context of 3728 N/A C:\Users\Admin\AppData\Local\Temp\7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

Script User-Agent

Description Indicator Process Target
HTTP User-Agent header Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) N/A N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f.exe

"C:\Users\Admin\AppData\Local\Temp\7b7f9647dbc512c0f9857332b181991b1e8f6b1ab0634f31d8612ee483d2933f.exe"

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

-arguments

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1788 -ip 1788

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1788 -s 920

Network

Country Destination Domain Proto
LT 176.223.130.167:80 176.223.130.167 tcp
US 8.8.8.8:53 167.130.223.176.in-addr.arpa udp
N/A 192.168.1.2:1800 tcp
N/A 192.168.1.2:1800 tcp
N/A 192.168.1.2:1800 tcp
N/A 192.168.1.2:1800 tcp
N/A 192.168.1.2:1800 tcp
N/A 192.168.1.2:1800 tcp

Files

memory/3728-2-0x0000000000400000-0x0000000000412000-memory.dmp

memory/3728-7-0x0000000074A2E000-0x0000000074A2F000-memory.dmp

memory/3728-8-0x0000000074A20000-0x00000000751D1000-memory.dmp

memory/3728-9-0x0000000074A20000-0x00000000751D1000-memory.dmp