Malware Analysis Report

2025-04-14 03:07

Sample ID 240613-e6ks4sxhjk
Target trigger.ps1
SHA256 8fa77a5d324e475122b5d41cbec41632fcc5176765cee9e44beb94b65d95a3cb
Tags
execution
score
4/10

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 Overview

score
4/10

SHA256

8fa77a5d324e475122b5d41cbec41632fcc5176765cee9e44beb94b65d95a3cb

Threat Level: Likely benign

The file trigger.ps1 was found to be: Likely benign.

Malicious Activity Summary

execution

Drops file in Windows directory

Command and Scripting Interpreter: PowerShell

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 04:33

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 04:33

Reported

2024-06-13 04:36

Platform

win11-20240611-en

Max time kernel

149s

Max time network

151s

Command Line

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\trigger.ps1

Signatures

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Panther\UnattendGC\setupact.log C:\Windows\System32\oobe\UserOOBEBroker.exe N/A
File opened for modification C:\Windows\Panther\UnattendGC\setuperr.log C:\Windows\System32\oobe\UserOOBEBroker.exe N/A
File opened for modification C:\Windows\Panther\UnattendGC\diagerr.xml C:\Windows\System32\oobe\UserOOBEBroker.exe N/A
File opened for modification C:\Windows\Panther\UnattendGC\diagwrn.xml C:\Windows\System32\oobe\UserOOBEBroker.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

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1560405787-796225086-678739705-1000_Classes\Local Settings\MuiCache C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1428 wrote to memory of 2664 N/A C:\Windows\System32\ATBroker.exe C:\Windows\System32\osk.exe
PID 1428 wrote to memory of 2664 N/A C:\Windows\System32\ATBroker.exe C:\Windows\System32\osk.exe

Processes

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

powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\trigger.ps1

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe

"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca

C:\Windows\System32\oobe\UserOOBEBroker.exe

C:\Windows\System32\oobe\UserOOBEBroker.exe -Embedding

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe -Embedding

C:\Windows\System32\ATBroker.exe

C:\Windows\System32\ATBroker.exe /start osk

C:\Windows\System32\osk.exe

"C:\Windows\System32\osk.exe"

Network

Country Destination Domain Proto
GB 95.101.129.225:443 tcp
NL 23.62.61.97:443 r.bing.com tcp
NL 23.62.61.97:443 r.bing.com tcp
NL 23.62.61.97:443 r.bing.com tcp
NL 23.62.61.97:443 r.bing.com tcp
NL 23.62.61.97:443 r.bing.com tcp
NL 23.62.61.97:443 r.bing.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
BE 104.68.66.114:443 cxcs.microsoft.net tcp
BE 2.17.107.112:443 www.bing.com tcp
US 13.107.136.254:443 spo-ring.msedge.net tcp
US 13.107.253.254:443 t-ring-fallback.msedge.net tcp
US 152.199.19.161:443 fp-vp-nocache.azureedge.net tcp
DE 51.116.253.169:443 browser.pipe.aria.microsoft.com tcp
US 13.107.3.254:443 s-ring.msedge.net tcp
US 150.171.69.254:443 mcr-ring.msedge.net tcp
FR 152.199.21.118:443 static-ecst.licdn.com tcp
BE 2.17.107.105:443 www.bing.com tcp
BE 104.68.66.114:443 cxcs.microsoft.net tcp
US 131.253.33.254:443 a-ring-fallback.msedge.net tcp

Files

memory/2288-0-0x00007FFB5D213000-0x00007FFB5D215000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pqy3cebd.eru.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2288-1-0x0000019251510000-0x0000019251532000-memory.dmp

memory/2288-10-0x00007FFB5D210000-0x00007FFB5DCD2000-memory.dmp

memory/2288-11-0x00007FFB5D210000-0x00007FFB5DCD2000-memory.dmp

memory/2288-12-0x00007FFB5D210000-0x00007FFB5DCD2000-memory.dmp

memory/2288-16-0x00007FFB5D210000-0x00007FFB5DCD2000-memory.dmp

memory/2288-15-0x00007FFB5D210000-0x00007FFB5DCD2000-memory.dmp

C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

MD5 9a7af7f1f08f7de9da3ba647286ee5a6
SHA1 d7a23961ba5f8c4242a03f20686ff516c2ae432c
SHA256 dddc3d322b46ec53927c26326a4f4d573dec131fbe668450f984c91c3104a08b
SHA512 64b0d94e68aa2d0ee9d02f170de6989f5255c5c57d05dffbf4dbbe012dae43a6f4dbd59c6a85fd2621fb84ae7f4cdf486a089b90e3e6c4fce1b152ba5aa6ba58