Malware Analysis Report

2024-11-13 14:55

Sample ID 220711-qdebeahcgm
Target E-bill.exe
SHA256 e296a3f9af1ee967a9a919495e2a12917dd4077d794a54e25b9e16c02854a74e
Tags
kutaki keylogger stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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
10/10

SHA256

e296a3f9af1ee967a9a919495e2a12917dd4077d794a54e25b9e16c02854a74e

Threat Level: Known bad

The file E-bill.exe 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

2022-07-11 13:08

Signatures

Kutaki Executable

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

Kutaki family

kutaki

Analysis: behavioral1

Detonation Overview

Submitted

2022-07-11 13:08

Reported

2022-07-11 13:11

Platform

win7-20220414-en

Max time kernel

148s

Max time network

48s

Command Line

"C:\Users\Admin\AppData\Local\Temp\E-bill.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\xunvfrch.exe N/A

Drops startup file

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

Loads dropped DLL

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

Processes

C:\Users\Admin\AppData\Local\Temp\E-bill.exe

"C:\Users\Admin\AppData\Local\Temp\E-bill.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\xunvfrch.exe

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

Network

N/A

Files

memory/1992-56-0x0000000075DB1000-0x0000000075DB3000-memory.dmp

memory/1240-57-0x0000000000000000-mapping.dmp

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

MD5 e8f5b21f536286d5fb65297300f4b11f
SHA1 c21a5f1668385d581d5ddebdd9907be4c961383a
SHA256 e296a3f9af1ee967a9a919495e2a12917dd4077d794a54e25b9e16c02854a74e
SHA512 21d16e637bdb9849656f949e46b6f37ad1b3f5338555f514804467a30b75c4f6e574ac6058b7d1ec8235c57aa16b190acb532f3905cb2bbbb9f1ad6c4362df7b

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

MD5 e8f5b21f536286d5fb65297300f4b11f
SHA1 c21a5f1668385d581d5ddebdd9907be4c961383a
SHA256 e296a3f9af1ee967a9a919495e2a12917dd4077d794a54e25b9e16c02854a74e
SHA512 21d16e637bdb9849656f949e46b6f37ad1b3f5338555f514804467a30b75c4f6e574ac6058b7d1ec8235c57aa16b190acb532f3905cb2bbbb9f1ad6c4362df7b

memory/1256-60-0x0000000000000000-mapping.dmp

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

MD5 e8f5b21f536286d5fb65297300f4b11f
SHA1 c21a5f1668385d581d5ddebdd9907be4c961383a
SHA256 e296a3f9af1ee967a9a919495e2a12917dd4077d794a54e25b9e16c02854a74e
SHA512 21d16e637bdb9849656f949e46b6f37ad1b3f5338555f514804467a30b75c4f6e574ac6058b7d1ec8235c57aa16b190acb532f3905cb2bbbb9f1ad6c4362df7b

Analysis: behavioral2

Detonation Overview

Submitted

2022-07-11 13:08

Reported

2022-07-11 13:11

Platform

win10v2004-20220414-en

Max time kernel

129s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\E-bill.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\zwkafzch.exe N/A

Drops startup file

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\E-bill.exe

"C:\Users\Admin\AppData\Local\Temp\E-bill.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\zwkafzch.exe

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

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
NL 20.50.201.200:443 tcp
NL 67.26.111.254:80 tcp
NL 67.26.111.254:80 tcp
NL 67.26.111.254:80 tcp

Files

memory/1444-132-0x0000000000000000-mapping.dmp

memory/4528-133-0x0000000000000000-mapping.dmp

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

MD5 e8f5b21f536286d5fb65297300f4b11f
SHA1 c21a5f1668385d581d5ddebdd9907be4c961383a
SHA256 e296a3f9af1ee967a9a919495e2a12917dd4077d794a54e25b9e16c02854a74e
SHA512 21d16e637bdb9849656f949e46b6f37ad1b3f5338555f514804467a30b75c4f6e574ac6058b7d1ec8235c57aa16b190acb532f3905cb2bbbb9f1ad6c4362df7b

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

MD5 e8f5b21f536286d5fb65297300f4b11f
SHA1 c21a5f1668385d581d5ddebdd9907be4c961383a
SHA256 e296a3f9af1ee967a9a919495e2a12917dd4077d794a54e25b9e16c02854a74e
SHA512 21d16e637bdb9849656f949e46b6f37ad1b3f5338555f514804467a30b75c4f6e574ac6058b7d1ec8235c57aa16b190acb532f3905cb2bbbb9f1ad6c4362df7b