Malware Analysis Report

2024-11-13 18:04

Sample ID 241104-dv3zwasdnf
Target Kawaii.exe
SHA256 14c2553770ce1d8784cdd691d03f2d215c7112e29cc01701c9c5e8cd27b122f6
Tags
discovery exploit persistence
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

14c2553770ce1d8784cdd691d03f2d215c7112e29cc01701c9c5e8cd27b122f6

Threat Level: Likely malicious

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

Malicious Activity Summary

discovery exploit persistence

Possible privilege escalation attempt

Drops file in Drivers directory

Boot or Logon Autostart Execution: Active Setup

Executes dropped EXE

Modifies file permissions

Drops file in System32 directory

Drops file in Windows directory

Drops file in Program Files directory

Enumerates physical storage devices

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

Suspicious behavior: EnumeratesProcesses

Modifies registry class

Runs .reg file with regedit

Suspicious use of WriteProcessMemory

Suspicious behavior: GetForegroundWindowSpam

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-04 03:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-04 03:20

Reported

2024-11-04 03:22

Platform

win7-20240903-en

Max time kernel

75s

Max time network

57s

Command Line

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

Signatures

Boot or Logon Autostart Execution: Active Setup

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Active Setup\Installed Components C:\Windows\explorer.exe N/A

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\System32\drivers\Kawaii.exe C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.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
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\Win32\Windows\Kawaii\Temp\fondo1.jpg C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
File created C:\Windows\System32\Kawaii.exe C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
File opened for modification C:\Windows\System32\Win32\Windows\Kawaii\Temp\icon.ico C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
File opened for modification C:\Windows\System32\Win32\Windows\Kawaii\Temp\fondo.jpg C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
File opened for modification C:\Windows\System32\Win32\Windows\Kawaii\Temp\fondo2.jpg C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
File opened for modification C:\Windows\System32\Win32\Windows\Kawaii\Temp\control.reg C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
File created C:\Windows\System32\Win32\Windows\Kawaii\Temp\Kawaii.exe C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
File opened for modification C:\Windows\System32\Win32\Windows\Kawaii\Temp\Kawaii.exe C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
File opened for modification C:\Windows\System32\Win32\Windows\Kawaii\Temp\flower_blue.ani C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
File opened for modification C:\Windows\System32\Win32\Windows\Kawaii\Temp\gemido.wav C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Win32\Temp\Kawaii.exe C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Kawaii.exe C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Set value (data) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 020202 C:\Windows\explorer.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 0000000001000000ffffffff C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_Classes\Local Settings C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU C:\Windows\explorer.exe N/A

Runs .reg file with regedit

Description Indicator Process Target
N/A N/A C:\Windows\regedit.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
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N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\explorer.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\system32\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\system32\takeown.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\system32\takeown.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\shutdown.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\shutdown.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
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N/A N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
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N/A N/A C:\Windows\explorer.exe N/A
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N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\system32\notepad.exe N/A
N/A N/A C:\Windows\explorer.exe N/A
N/A N/A C:\Windows\explorer.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2600 wrote to memory of 1660 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\cmd.exe
PID 2600 wrote to memory of 1660 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\cmd.exe
PID 2600 wrote to memory of 1660 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\cmd.exe
PID 1660 wrote to memory of 2860 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 1660 wrote to memory of 2860 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 1660 wrote to memory of 2860 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 1660 wrote to memory of 1456 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 1660 wrote to memory of 1456 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 1660 wrote to memory of 1456 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 1660 wrote to memory of 2804 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 1660 wrote to memory of 2804 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 1660 wrote to memory of 2804 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 1660 wrote to memory of 2136 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 1660 wrote to memory of 2136 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 1660 wrote to memory of 2136 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 1660 wrote to memory of 296 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 1660 wrote to memory of 296 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 1660 wrote to memory of 296 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 1660 wrote to memory of 1956 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 1660 wrote to memory of 1956 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 1660 wrote to memory of 1956 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 2600 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\cmd.exe
PID 2600 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\cmd.exe
PID 2600 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\cmd.exe
PID 2600 wrote to memory of 1828 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\cmd.exe
PID 2600 wrote to memory of 1828 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\cmd.exe
PID 2600 wrote to memory of 1828 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\cmd.exe
PID 1440 wrote to memory of 1680 N/A C:\Windows\System32\cmd.exe C:\Windows\regedit.exe
PID 1440 wrote to memory of 1680 N/A C:\Windows\System32\cmd.exe C:\Windows\regedit.exe
PID 1440 wrote to memory of 1680 N/A C:\Windows\System32\cmd.exe C:\Windows\regedit.exe
PID 1828 wrote to memory of 2196 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\notepad.exe
PID 1828 wrote to memory of 2196 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\notepad.exe
PID 1828 wrote to memory of 2196 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\notepad.exe
PID 2600 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\shutdown.exe
PID 2600 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\shutdown.exe
PID 2600 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\Kawaii.exe C:\Windows\System32\shutdown.exe

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\explorer.exe

"C:\Windows\explorer.exe"

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

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

C:\Windows\System32\cmd.exe

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

C:\Windows\system32\takeown.exe

takeown /f C:\Windows\System32\gpedit.msc

C:\Windows\system32\icacls.exe

icacls C:\Windows\System32\gpedit.msc /grant Admin:F

C:\Windows\system32\takeown.exe

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

C:\Windows\system32\icacls.exe

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

C:\Windows\system32\takeown.exe

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

C:\Windows\system32\icacls.exe

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

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /k regedit /s "C:/Windows/System32/Win32/Windows/Kawaii/Temp/control.reg && exit" && exit

C:\Windows\explorer.exe

explorer.exe

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /k notepad C:/Users/nota.txt && exit

C:\Windows\regedit.exe

regedit /s "C:/Windows/System32/Win32/Windows/Kawaii/Temp/control.reg && exit"

C:\Windows\system32\notepad.exe

notepad C:/Users/nota.txt

C:\Windows\System32\shutdown.exe

"C:\Windows\System32\shutdown.exe" -f -r -t 3

Network

N/A

Files

memory/2092-0-0x000007FEF5AC3000-0x000007FEF5AC4000-memory.dmp

memory/2092-1-0x0000000000AC0000-0x000000000100C000-memory.dmp

memory/2092-2-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

memory/2092-3-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

memory/2092-4-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

memory/2092-5-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

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

MD5 d9dabab21dc0ae729cd41a81850e8593
SHA1 afca150f0964df9bf4c9336465ed0ff3c7ed4900
SHA256 14c2553770ce1d8784cdd691d03f2d215c7112e29cc01701c9c5e8cd27b122f6
SHA512 0caf4e854dd4458f8a2d730fe56d6a4c19cf1af5eb7e4b3534b34fd6758be15fbe320c4f823bd53d22d983a0f2fc14e4a8662d7d6c223e823ffa6423f617c5a3

memory/2600-7-0x0000000000040000-0x000000000058C000-memory.dmp

C:\Users\nota.txt

MD5 0aea1502a4192f4fcd8d25d4172ec0e5
SHA1 adcc286452580eee1a6d651c63f54cdaaadc23e0
SHA256 acab5764875cdbb4a37299d32da3680ff66221072eb8a044375a872d3b1a9eee
SHA512 33ed0647cd4a81e1aa71fa9faa3d548b6fd2596822315dc41eefde1e57dae4440476e128d79288c47636e3ceac0a435b532b6d2c7eefc52c5910385b57771edb