Malware Analysis Report

2024-11-30 11:24

Sample ID 220521-nplthshbbl
Target b6c1798151f3fab27920c3d9e00a67b35df3d814a294701b3eec962aba6bd201
SHA256 b6c1798151f3fab27920c3d9e00a67b35df3d814a294701b3eec962aba6bd201
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

b6c1798151f3fab27920c3d9e00a67b35df3d814a294701b3eec962aba6bd201

Threat Level: Known bad

The file b6c1798151f3fab27920c3d9e00a67b35df3d814a294701b3eec962aba6bd201 was found to be: Known bad.

Malicious Activity Summary

kutaki keylogger stealer

Kutaki Executable

Kutaki family

Kutaki

Executes dropped EXE

Drops startup file

Loads dropped DLL

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-05-21 11:34

Signatures

Kutaki Executable

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

Kutaki family

kutaki

Analysis: behavioral2

Detonation Overview

Submitted

2022-05-21 11:34

Reported

2022-05-21 11:49

Platform

win10v2004-20220414-en

Max time kernel

184s

Max time network

181s

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\eppjldch.exe N/A

Drops startup file

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

Enumerates physical storage devices

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\

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

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

Network

Country Destination Domain Proto
NL 13.69.116.104:443 tcp
IE 20.54.110.249:443 tcp
NL 178.79.208.1:80 tcp
NL 178.79.208.1:80 tcp
FR 2.18.109.224:443 tcp
US 204.79.197.203:80 tcp
NL 88.221.144.179:80 tcp
NL 104.123.41.133:80 tcp
US 8.8.8.8:53 151.122.125.40.in-addr.arpa udp
US 8.8.8.8:53 storesdk.dsx.mp.microsoft.com udp
FR 2.18.109.224:443 storesdk.dsx.mp.microsoft.com tcp

Files

memory/4764-132-0x0000000000000000-mapping.dmp

memory/4712-133-0x0000000000000000-mapping.dmp

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

MD5 76430208466ca619a470ab10e9ce6848
SHA1 a7730a38f002dfe4e59a26ec2cc46fdc422e2708
SHA256 5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5
SHA512 cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b

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

MD5 76430208466ca619a470ab10e9ce6848
SHA1 a7730a38f002dfe4e59a26ec2cc46fdc422e2708
SHA256 5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5
SHA512 cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b

Analysis: behavioral1

Detonation Overview

Submitted

2022-05-21 11:34

Reported

2022-05-21 11:49

Platform

win7-20220414-en

Max time kernel

141s

Max time network

45s

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

Executes dropped EXE

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

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.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\wdrwolch.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

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\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.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\

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

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

Network

N/A

Files

memory/2032-56-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

memory/1968-57-0x0000000000000000-mapping.dmp

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

MD5 76430208466ca619a470ab10e9ce6848
SHA1 a7730a38f002dfe4e59a26ec2cc46fdc422e2708
SHA256 5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5
SHA512 cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b

memory/676-60-0x0000000000000000-mapping.dmp

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

MD5 76430208466ca619a470ab10e9ce6848
SHA1 a7730a38f002dfe4e59a26ec2cc46fdc422e2708
SHA256 5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5
SHA512 cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b

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

MD5 76430208466ca619a470ab10e9ce6848
SHA1 a7730a38f002dfe4e59a26ec2cc46fdc422e2708
SHA256 5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5
SHA512 cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b