Malware Analysis Report

2024-10-23 19:25

Sample ID 240524-z7a1hsbd9v
Target 9211293FDF6164567C9C0557CF200057.exe
SHA256 4f9ae5b89c89e5c79c53db694d4d67e2d9b3c47c7389c8c3899dedbc9e92be76
Tags
asyncrat os 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

4f9ae5b89c89e5c79c53db694d4d67e2d9b3c47c7389c8c3899dedbc9e92be76

Threat Level: Known bad

The file 9211293FDF6164567C9C0557CF200057.exe was found to be: Known bad.

Malicious Activity Summary

asyncrat os 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 21:21

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-24 21:21

Reported

2024-05-24 21:23

Platform

win7-20240508-en

Max time kernel

119s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe"

Signatures

AsyncRat

rat asyncrat

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2036 set thread context of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.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 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2036 wrote to memory of 2356 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe

"C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe"

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

#system32

Network

Country Destination Domain Proto
GB 20.117.108.240:7825 tcp

Files

memory/2036-0-0x00000000746FE000-0x00000000746FF000-memory.dmp

memory/2036-1-0x0000000001370000-0x000000000138C000-memory.dmp

memory/2036-2-0x00000000746F0000-0x0000000074DDE000-memory.dmp

memory/2356-3-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2356-4-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2356-5-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2356-6-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2356-10-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2356-14-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2356-12-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2356-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2036-15-0x00000000746F0000-0x0000000074DDE000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab3822.tmp

MD5 29f65ba8e88c063813cc50a4ea544e93
SHA1 05a7040d5c127e68c25d81cc51271ffb8bef3568
SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512 e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-24 21:21

Reported

2024-05-24 21:23

Platform

win10v2004-20240226-en

Max time kernel

140s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe"

Signatures

AsyncRat

rat asyncrat

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1880 set thread context of 1928 N/A C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.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

Processes

C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe

"C:\Users\Admin\AppData\Local\Temp\9211293FDF6164567C9C0557CF200057.exe"

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

#system32

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=4136 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
GB 172.217.169.74:443 tcp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
GB 20.117.108.240:7825 tcp
US 8.8.8.8:53 240.108.117.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 25.73.42.20.in-addr.arpa udp

Files

memory/1880-0-0x00000000747DE000-0x00000000747DF000-memory.dmp

memory/1880-1-0x0000000000F00000-0x0000000000F1C000-memory.dmp

memory/1880-2-0x00000000747D0000-0x0000000074F80000-memory.dmp

memory/1928-3-0x0000000000400000-0x0000000000412000-memory.dmp

memory/1880-5-0x00000000747D0000-0x0000000074F80000-memory.dmp

memory/1928-6-0x00000000747C0000-0x0000000074F70000-memory.dmp

memory/1928-7-0x00000000747C0000-0x0000000074F70000-memory.dmp

memory/1928-10-0x00000000056A0000-0x000000000573C000-memory.dmp

memory/1928-11-0x0000000005CF0000-0x0000000006294000-memory.dmp

memory/1928-12-0x00000000057B0000-0x0000000005816000-memory.dmp

memory/1928-13-0x00000000747C0000-0x0000000074F70000-memory.dmp

memory/1928-14-0x00000000747C0000-0x0000000074F70000-memory.dmp