Malware Analysis Report

2024-12-07 14:56

Sample ID 241004-prwbeayckf
Target main.ps1
SHA256 aa31641aeef65f359ac55f3a96da0f482804e1c7f39307cd829f8b74696998e7
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

aa31641aeef65f359ac55f3a96da0f482804e1c7f39307cd829f8b74696998e7

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 12:34

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-04 12:34

Reported

2024-10-04 12:38

Platform

win11-20240802-en

Max time kernel

91s

Max time network

95s

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\msconfig.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
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

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

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 4556 wrote to memory of 4948 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 4948 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4948 wrote to memory of 4296 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 4948 wrote to memory of 4296 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 4556 wrote to memory of 2316 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 2316 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2316 wrote to memory of 720 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 2316 wrote to memory of 720 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 4556 wrote to memory of 1444 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 1444 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 1444 wrote to memory of 4260 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 1444 wrote to memory of 4260 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 4556 wrote to memory of 3328 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 3328 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 3328 wrote to memory of 1408 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 3328 wrote to memory of 1408 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 4556 wrote to memory of 2880 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 2880 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2880 wrote to memory of 4548 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 2880 wrote to memory of 4548 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 4556 wrote to memory of 4744 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 4744 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4744 wrote to memory of 3700 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 4744 wrote to memory of 3700 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 4556 wrote to memory of 4572 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 4572 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4572 wrote to memory of 2056 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 4572 wrote to memory of 2056 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 4556 wrote to memory of 1452 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 1452 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 1452 wrote to memory of 1388 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 1452 wrote to memory of 1388 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 4556 wrote to memory of 1476 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 1476 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 1476 wrote to memory of 2992 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 1476 wrote to memory of 2992 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 4556 wrote to memory of 4968 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 4968 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4968 wrote to memory of 1656 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 4968 wrote to memory of 1656 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 4556 wrote to memory of 3680 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 3680 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 3680 wrote to memory of 1484 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 3680 wrote to memory of 1484 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 4556 wrote to memory of 4568 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 4568 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4568 wrote to memory of 1512 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 4568 wrote to memory of 1512 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 4556 wrote to memory of 2812 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 2812 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2812 wrote to memory of 420 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 2812 wrote to memory of 420 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 4556 wrote to memory of 2436 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 2436 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2436 wrote to memory of 1060 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 2436 wrote to memory of 1060 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 4556 wrote to memory of 1616 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 1616 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 1616 wrote to memory of 3128 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 1616 wrote to memory of 3128 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 4556 wrote to memory of 1960 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 4556 wrote to memory of 1960 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 1960 wrote to memory of 896 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 1960 wrote to memory of 896 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\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

Files

memory/4556-0-0x00007FFCED9D3000-0x00007FFCED9D5000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gzln3xf2.r44.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4556-9-0x0000021250250000-0x0000021250272000-memory.dmp

memory/4556-10-0x00007FFCED9D0000-0x00007FFCEE492000-memory.dmp

memory/4556-11-0x00007FFCED9D0000-0x00007FFCEE492000-memory.dmp

memory/4556-12-0x00007FFCED9D0000-0x00007FFCEE492000-memory.dmp

memory/4556-13-0x00007FFCED9D3000-0x00007FFCED9D5000-memory.dmp

memory/4556-14-0x00007FFCED9D0000-0x00007FFCEE492000-memory.dmp

memory/4556-15-0x00007FFCED9D0000-0x00007FFCEE492000-memory.dmp

memory/4556-16-0x00007FFCED9D0000-0x00007FFCEE492000-memory.dmp