Malware Analysis Report

2024-11-30 11:25

Sample ID 211229-k98bgadcdp
Target 0684d62dd44b077b6e537af5146b3481
SHA256 b761256b5f20918c970f0d64b939e86d8304141b04e9024a809996da04d46c5e
Tags
kutaki keylogger stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b761256b5f20918c970f0d64b939e86d8304141b04e9024a809996da04d46c5e

Threat Level: Known bad

The file 0684d62dd44b077b6e537af5146b3481 was found to be: Known bad.

Malicious Activity Summary

kutaki keylogger stealer

Kutaki Executable

Kutaki family

Kutaki

Executes dropped EXE

Loads dropped DLL

Drops startup file

Drops file in Windows directory

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Modifies registry class

Suspicious use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Modifies Internet Explorer settings

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-12-29 09:19

Signatures

Kutaki Executable

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

Kutaki family

kutaki

Analysis: behavioral2

Detonation Overview

Submitted

2021-12-29 09:19

Reported

2021-12-29 09:21

Platform

win10-en-20211208

Max time kernel

125s

Max time network

119s

Command Line

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

Signatures

Kutaki

stealer keylogger kutaki

Kutaki Executable

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe N/A

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe C:\Users\Admin\AppData\Local\Temp\image.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe C:\Users\Admin\AppData\Local\Temp\image.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Debug\WIA\wiatrace.log C:\Windows\SysWOW64\mspaint.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000_Classes\Local Settings C:\Windows\SysWOW64\cmd.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\mspaint.exe N/A
N/A N/A C:\Windows\SysWOW64\mspaint.exe N/A

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp

C:\Windows\SysWOW64\mspaint.exe

"C:\Windows\system32\mspaint.exe" "C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp"

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe"

\??\c:\windows\system32\svchost.exe

c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s DeviceAssociationService

Network

Country Destination Domain Proto
US 8.8.8.8:53 time.windows.com udp
NL 20.101.57.9:123 time.windows.com udp

Files

memory/512-117-0x0000000000000000-mapping.dmp

memory/728-118-0x0000000000000000-mapping.dmp

memory/2244-119-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe

MD5 e60ded83982043932447eba0a568273c
SHA1 835cfdbebbbcd44985572d5690d3dbcd8f041bbc
SHA256 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd
SHA512 b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe

MD5 e60ded83982043932447eba0a568273c
SHA1 835cfdbebbbcd44985572d5690d3dbcd8f041bbc
SHA256 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd
SHA512 b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c

Analysis: behavioral1

Detonation Overview

Submitted

2021-12-29 09:19

Reported

2021-12-29 09:21

Platform

win7-en-20211208

Max time kernel

121s

Max time network

122s

Command Line

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

Signatures

Kutaki

stealer keylogger kutaki

Kutaki Executable

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe C:\Users\Admin\AppData\Local\Temp\image.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe C:\Users\Admin\AppData\Local\Temp\image.exe N/A

Loads dropped DLL

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

Enumerates physical storage devices

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Internet Explorer\Main C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\DllHost.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\image.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\image.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\image.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe N/A

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe"

C:\Windows\SysWOW64\DllHost.exe

C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}

Network

N/A

Files

memory/968-54-0x0000000000220000-0x0000000000226000-memory.dmp

memory/968-55-0x0000000000220000-0x000000000022A000-memory.dmp

memory/968-56-0x0000000074F11000-0x0000000074F13000-memory.dmp

memory/688-57-0x0000000000000000-mapping.dmp

\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe

MD5 e60ded83982043932447eba0a568273c
SHA1 835cfdbebbbcd44985572d5690d3dbcd8f041bbc
SHA256 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd
SHA512 b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c

\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe

MD5 e60ded83982043932447eba0a568273c
SHA1 835cfdbebbbcd44985572d5690d3dbcd8f041bbc
SHA256 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd
SHA512 b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c

memory/1456-60-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe

MD5 e60ded83982043932447eba0a568273c
SHA1 835cfdbebbbcd44985572d5690d3dbcd8f041bbc
SHA256 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd
SHA512 b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c

memory/1456-63-0x00000000001B0000-0x00000000001BA000-memory.dmp

memory/1456-62-0x00000000001B0000-0x00000000001B6000-memory.dmp

memory/688-67-0x0000000001FD0000-0x0000000001FD2000-memory.dmp

memory/1980-68-0x00000000001E0000-0x00000000001E2000-memory.dmp

memory/1980-69-0x00000000003C0000-0x00000000003C1000-memory.dmp

memory/1456-70-0x0000000003DE1000-0x0000000004C8D000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe

MD5 e60ded83982043932447eba0a568273c
SHA1 835cfdbebbbcd44985572d5690d3dbcd8f041bbc
SHA256 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd
SHA512 b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c