Malware Analysis Report

2024-11-16 12:45

Sample ID 240302-x47tzagh56
Target Chernobyl.exe
SHA256 5afc406a9a72118bd28a15c671a02a1972fc4dfe4cab66db784f4a22a0ae3968
Tags
discovery 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

5afc406a9a72118bd28a15c671a02a1972fc4dfe4cab66db784f4a22a0ae3968

Threat Level: Likely malicious

The file Chernobyl.exe was found to be: Likely malicious.

Malicious Activity Summary

discovery exploit

Possible privilege escalation attempt

Modifies file permissions

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-02 19:25

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-02 19:25

Reported

2024-03-02 19:27

Platform

win7-20240221-en

Max time kernel

46s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe"

Signatures

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\takeown.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2208 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2660 wrote to memory of 2572 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2660 wrote to memory of 2572 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2660 wrote to memory of 2572 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2660 wrote to memory of 2572 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2208 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2632 wrote to memory of 2700 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2632 wrote to memory of 2700 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2632 wrote to memory of 2700 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2632 wrote to memory of 2700 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2208 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2764 wrote to memory of 2444 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2764 wrote to memory of 2444 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2764 wrote to memory of 2444 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2764 wrote to memory of 2444 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2764 wrote to memory of 2560 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\icacls.exe
PID 2764 wrote to memory of 2560 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\icacls.exe
PID 2764 wrote to memory of 2560 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\icacls.exe
PID 2764 wrote to memory of 2560 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\icacls.exe
PID 2208 wrote to memory of 2468 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2468 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2468 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2468 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2468 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2468 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2468 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2468 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2208 wrote to memory of 2540 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2540 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2540 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2540 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2540 wrote to memory of 2472 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2540 wrote to memory of 2472 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2540 wrote to memory of 2472 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2540 wrote to memory of 2472 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2208 wrote to memory of 1344 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 1344 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 1344 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 1344 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 1344 wrote to memory of 2000 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 1344 wrote to memory of 2000 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 1344 wrote to memory of 2000 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 1344 wrote to memory of 2000 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2208 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2252 wrote to memory of 676 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2252 wrote to memory of 676 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2252 wrote to memory of 676 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2252 wrote to memory of 676 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\takeown.exe
PID 2208 wrote to memory of 1176 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 1176 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 1176 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe
PID 2208 wrote to memory of 1176 N/A C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe C:\Windows\SysWOW64\cmd.exe

Processes

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

"C:\Users\Admin\AppData\Local\Temp\Chernobyl.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\smss.exe && icacls C:\Windows\System32\smss.exe /grant "%username%:F" && exit

C:\Windows\SysWOW64\takeown.exe

takeown /f C:\Windows\System32\smss.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\csrss.exe && icacls C:\Windows\System32\csrss.exe /grant "%username%:F" && exit

C:\Windows\SysWOW64\takeown.exe

takeown /f C:\Windows\System32\csrss.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\wininit.exe && icacls C:\Windows\System32\wininit.exe /grant "%username%:F" && exit

C:\Windows\SysWOW64\takeown.exe

takeown /f C:\Windows\System32\wininit.exe

C:\Windows\SysWOW64\icacls.exe

icacls C:\Windows\System32\wininit.exe /grant "Admin:F"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\LogonUI.exe && icacls C:\Windows\System32\LogonUI.exe /grant "%username%:F" && exit

C:\Windows\SysWOW64\takeown.exe

takeown /f C:\Windows\System32\LogonUI.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\lsass.exe && icacls C:\Windows\System32\lsass.exe /grant "%username%:F" && exit

C:\Windows\SysWOW64\takeown.exe

takeown /f C:\Windows\System32\lsass.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\services.exe && icacls C:\Windows\System32\services.exe /grant "%username%:F" && exit

C:\Windows\SysWOW64\takeown.exe

takeown /f C:\Windows\System32\services.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\winlogon.exe && icacls C:\Windows\System32\winlogon.exe /grant "%username%:F" && exit

C:\Windows\SysWOW64\takeown.exe

takeown /f C:\Windows\System32\winlogon.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\winload.efi && icacls C:\Windows\System32\winload.efi /grant "%username%:F" && exit

C:\Windows\SysWOW64\takeown.exe

takeown /f C:\Windows\System32\winload.efi

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\winload.exe && icacls C:\Windows\System32\winload.exe /grant "%username%:F" && exit

C:\Windows\SysWOW64\takeown.exe

takeown /f C:\Windows\System32\winload.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\ntoskrnl.exe && icacls C:\Windows\System32\ntoskrnl.exe /grant "%username%:F" && exit

C:\Windows\SysWOW64\takeown.exe

takeown /f C:\Windows\System32\ntoskrnl.exe

C:\Windows\SysWOW64\icacls.exe

icacls C:\Windows\System32\ntoskrnl.exe /grant "Admin:F"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\svchost.exe && icacls C:\Windows\System32\svchost.exe /grant "%username%:F" && exit

C:\Windows\SysWOW64\takeown.exe

takeown /f C:\Windows\System32\svchost.exe

C:\Windows\SysWOW64\icacls.exe

icacls C:\Windows\System32\svchost.exe /grant "Admin:F"

Network

N/A

Files

memory/2208-0-0x0000000000DB0000-0x0000000000DD6000-memory.dmp

memory/2208-1-0x00000000746A0000-0x0000000074D8E000-memory.dmp

memory/2208-2-0x0000000004CE0000-0x0000000004D20000-memory.dmp

memory/2208-3-0x0000000004CE0000-0x0000000004D20000-memory.dmp

memory/2208-4-0x00000000746A0000-0x0000000074D8E000-memory.dmp

memory/2208-5-0x0000000004CE0000-0x0000000004D20000-memory.dmp

memory/2208-6-0x0000000004CE0000-0x0000000004D20000-memory.dmp