Malware Analysis Report

2024-12-07 14:56

Sample ID 241004-pvlw5svalr
Target main.ps1
SHA256 3d608823e5fe78abfec958f0aeff849f6cfba5f8fa1a5a01a0f325308c81f293
Tags
defense_evasion discovery execution exploit
score
8/10

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
8/10

SHA256

3d608823e5fe78abfec958f0aeff849f6cfba5f8fa1a5a01a0f325308c81f293

Threat Level: Likely malicious

The file main.ps1 was found to be: Likely malicious.

Malicious Activity Summary

defense_evasion discovery execution exploit

Possible privilege escalation attempt

Modifies file permissions

File and Directory Permissions Modification: Windows File and Directory Permissions Modification

Drops file in System32 directory

Drops file in Windows directory

Command and Scripting Interpreter: PowerShell

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-04 12:39

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-04 12:39

Reported

2024-10-04 12:41

Platform

win11-20240802-en

Max time kernel

40s

Max time network

61s

Command Line

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

Signatures

File and Directory Permissions Modification: Windows File and Directory Permissions Modification

defense_evasion

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\regedt32.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Windows\System32\taskmgr.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Windows\System32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Windows\System32\control.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Windows\System32\msconfig.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\explorer.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Windows\regedit.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Windows\notepad.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.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

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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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: SeTakeOwnershipPrivilege N/A C:\Windows\system32\takeown.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5436 wrote to memory of 2124 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 2124 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2124 wrote to memory of 3996 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 2124 wrote to memory of 3996 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 5436 wrote to memory of 948 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 948 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 948 wrote to memory of 4868 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 948 wrote to memory of 4868 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 5436 wrote to memory of 3424 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 3424 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 3424 wrote to memory of 1540 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 3424 wrote to memory of 1540 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 5436 wrote to memory of 5620 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 5620 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5620 wrote to memory of 3920 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 5620 wrote to memory of 3920 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 5436 wrote to memory of 1744 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 1744 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 1744 wrote to memory of 5660 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 1744 wrote to memory of 5660 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 5436 wrote to memory of 3988 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 3988 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 3988 wrote to memory of 2844 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 3988 wrote to memory of 2844 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 5436 wrote to memory of 2760 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 2760 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2760 wrote to memory of 5644 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 2760 wrote to memory of 5644 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 5436 wrote to memory of 5628 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 5628 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5628 wrote to memory of 2976 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 5628 wrote to memory of 2976 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 5436 wrote to memory of 2896 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 2896 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2896 wrote to memory of 2548 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 2896 wrote to memory of 2548 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 5436 wrote to memory of 1980 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 1980 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 1980 wrote to memory of 1244 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 1980 wrote to memory of 1244 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 5436 wrote to memory of 3408 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 3408 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 3408 wrote to memory of 1704 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 3408 wrote to memory of 1704 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 5436 wrote to memory of 3376 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 3376 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 3376 wrote to memory of 1748 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 3376 wrote to memory of 1748 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 5436 wrote to memory of 3216 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 3216 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 3216 wrote to memory of 2132 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 3216 wrote to memory of 2132 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 5436 wrote to memory of 2380 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 2380 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2380 wrote to memory of 240 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 2380 wrote to memory of 240 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 5436 wrote to memory of 3884 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 3884 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 3884 wrote to memory of 3340 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 3884 wrote to memory of 3340 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 5436 wrote to memory of 3356 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 5436 wrote to memory of 3356 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 3356 wrote to memory of 1872 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 3356 wrote to memory of 1872 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe

Processes

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

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

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c takeown /F C:\Windows\System32\fr-FR\fms.dll.mui

C:\Windows\system32\takeown.exe

takeown /F C:\Windows\System32\fr-FR\fms.dll.mui

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c icacls C:\Windows\System32\fr-FR\fms.dll.mui /grant administrators:F

C:\Windows\system32\icacls.exe

icacls C:\Windows\System32\fr-FR\fms.dll.mui /grant administrators:F

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c takeown /F "C:\Windows\explorer.exe" /A /R /D Y

C:\Windows\system32\takeown.exe

takeown /F "C:\Windows\explorer.exe" /A /R /D Y

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c icacls "C:\Windows\explorer.exe" /grant administrators:F /T

C:\Windows\system32\icacls.exe

icacls "C:\Windows\explorer.exe" /grant administrators:F /T

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c takeown /F "C:\Windows\System32\taskmgr.exe" /A /R /D Y

C:\Windows\system32\takeown.exe

takeown /F "C:\Windows\System32\taskmgr.exe" /A /R /D Y

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c icacls "C:\Windows\System32\taskmgr.exe" /grant administrators:F /T

C:\Windows\system32\icacls.exe

icacls "C:\Windows\System32\taskmgr.exe" /grant administrators:F /T

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c takeown /F "C:\Windows\System32\cmd.exe" /A /R /D Y

C:\Windows\system32\takeown.exe

takeown /F "C:\Windows\System32\cmd.exe" /A /R /D Y

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c icacls "C:\Windows\System32\cmd.exe" /grant administrators:F /T

C:\Windows\system32\icacls.exe

icacls "C:\Windows\System32\cmd.exe" /grant administrators:F /T

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c takeown /F "C:\Windows\regedit.exe" /A /R /D Y

C:\Windows\system32\takeown.exe

takeown /F "C:\Windows\regedit.exe" /A /R /D Y

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c icacls "C:\Windows\regedit.exe" /grant administrators:F /T

C:\Windows\system32\icacls.exe

icacls "C:\Windows\regedit.exe" /grant administrators:F /T

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c takeown /F "C:\Windows\notepad.exe" /A /R /D Y

C:\Windows\system32\takeown.exe

takeown /F "C:\Windows\notepad.exe" /A /R /D Y

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c icacls "C:\Windows\notepad.exe" /grant administrators:F /T

C:\Windows\system32\icacls.exe

icacls "C:\Windows\notepad.exe" /grant administrators:F /T

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c takeown /F "C:\Windows\System32\control.exe" /A /R /D Y

C:\Windows\system32\takeown.exe

takeown /F "C:\Windows\System32\control.exe" /A /R /D Y

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c icacls "C:\Windows\System32\control.exe" /grant administrators:F /T

C:\Windows\system32\icacls.exe

icacls "C:\Windows\System32\control.exe" /grant administrators:F /T

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c takeown /F "C:\Windows\System32\msconfig.exe" /A /R /D Y

C:\Windows\system32\takeown.exe

takeown /F "C:\Windows\System32\msconfig.exe" /A /R /D Y

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c icacls "C:\Windows\System32\msconfig.exe" /grant administrators:F /T

C:\Windows\system32\icacls.exe

icacls "C:\Windows\System32\msconfig.exe" /grant administrators:F /T

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c takeown /F "C:\Windows\System32\regedt32.exe" /A /R /D Y

C:\Windows\system32\takeown.exe

takeown /F "C:\Windows\System32\regedt32.exe" /A /R /D Y

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c icacls "C:\Windows\System32\regedt32.exe" /grant administrators:F /T

C:\Windows\system32\icacls.exe

icacls "C:\Windows\System32\regedt32.exe" /grant administrators:F /T

Network

Country Destination Domain Proto
US 52.111.227.11:443 tcp

Files

memory/5436-0-0x00007FFAF1F63000-0x00007FFAF1F65000-memory.dmp

memory/5436-1-0x0000021F67420000-0x0000021F67442000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rbxgg0di.hec.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/5436-10-0x00007FFAF1F60000-0x00007FFAF2A22000-memory.dmp

memory/5436-11-0x00007FFAF1F60000-0x00007FFAF2A22000-memory.dmp

memory/5436-12-0x00007FFAF1F60000-0x00007FFAF2A22000-memory.dmp

memory/5436-13-0x00007FFAF1F63000-0x00007FFAF1F65000-memory.dmp

memory/5436-14-0x00007FFAF1F60000-0x00007FFAF2A22000-memory.dmp

memory/5436-15-0x00007FFAF1F60000-0x00007FFAF2A22000-memory.dmp

memory/5436-16-0x00007FFAF1F60000-0x00007FFAF2A22000-memory.dmp