Malware Analysis Report

2025-01-22 15:57

Sample ID 231222-fpnn4sacg2
Target 6d86f235e44fdf11cab8e49f7c722b18
SHA256 040832704269a67e4d63b3c0819eba3fbb7274cd45ac8a9e481850367d28fe24
Tags
macro xlm
score
10/10

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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

040832704269a67e4d63b3c0819eba3fbb7274cd45ac8a9e481850367d28fe24

Threat Level: Known bad

The file 6d86f235e44fdf11cab8e49f7c722b18 was found to be: Known bad.

Malicious Activity Summary

macro xlm

Process spawned unexpected child process

Suspicious Office macro

Suspicious use of WriteProcessMemory

Checks processor information in registry

Enumerates system info in registry

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Modifies Internet Explorer settings

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-22 05:03

Signatures

Suspicious Office macro

macro xlm
Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-22 05:03

Reported

2023-12-23 10:10

Platform

win7-20231129-en

Max time kernel

0s

Max time network

121s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\6d86f235e44fdf11cab8e49f7c722b18.xls

Signatures

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\Toolbar C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\MenuExt C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Processes

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\6d86f235e44fdf11cab8e49f7c722b18.xls

C:\Windows\SysWOW64\rundll32.exe

"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\Xjz.txt,DllRegisterServer

Network

Country Destination Domain Proto
US 8.8.8.8:53 skill.fashion udp
US 8.8.8.8:53 syracuse.best udp

Files

memory/2116-1-0x00000000724DD000-0x00000000724E8000-memory.dmp

memory/2116-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2116-2-0x00000000724DD000-0x00000000724E8000-memory.dmp

memory/2116-3-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2116-4-0x00000000724DD000-0x00000000724E8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-22 05:03

Reported

2023-12-23 10:11

Platform

win10v2004-20231222-en

Max time kernel

149s

Max time network

126s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\6d86f235e44fdf11cab8e49f7c722b18.xls"

Signatures

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process N/A C:\Windows\explorer.exe C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000_Classes\Local Settings C:\Windows\explorer.exe N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 636 wrote to memory of 2324 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 636 wrote to memory of 2324 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 1256 wrote to memory of 684 N/A C:\Windows\explorer.exe C:\Windows\System32\WScript.exe
PID 1256 wrote to memory of 684 N/A C:\Windows\explorer.exe C:\Windows\System32\WScript.exe

Processes

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\6d86f235e44fdf11cab8e49f7c722b18.xls"

C:\Windows\explorer.exe

explorer.exe C:\Users\Public\Documents\EcrKY18X.vbs

C:\Windows\explorer.exe

C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\EcrKY18X.vbs"

Network

Country Destination Domain Proto
US 8.8.8.8:53 skill.fashion udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 18.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 9.179.89.13.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

memory/636-4-0x00007FF91A790000-0x00007FF91A7A0000-memory.dmp

memory/636-3-0x00007FF91A790000-0x00007FF91A7A0000-memory.dmp

memory/636-7-0x00007FF917F10000-0x00007FF917F20000-memory.dmp

memory/636-5-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-9-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-10-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-11-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-8-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-6-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-2-0x00007FF91A790000-0x00007FF91A7A0000-memory.dmp

memory/636-14-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-15-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-13-0x00007FF917F10000-0x00007FF917F20000-memory.dmp

memory/636-16-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-12-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-17-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-18-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-19-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-20-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-21-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-22-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-1-0x00007FF91A790000-0x00007FF91A7A0000-memory.dmp

memory/636-23-0x00007FF95A710000-0x00007FF95A905000-memory.dmp

memory/636-0-0x00007FF91A790000-0x00007FF91A7A0000-memory.dmp

C:\Users\Public\Documents\EcrKY18X.vbs

MD5 464e825e4c346e99cfbfb9a058a92ac5
SHA1 46ad79f5ab1fc8b752e7f70c6d5f186cc65b6cbc
SHA256 a8ff67d8ce22a5d1fbbd86d1ceece96008bf8ebad2c3ec9cbac61c527d19dbc0
SHA512 57a080ae201b88c9f86d7fd5016003d358196ec05d6b7f73f3629de91bb8629dc5c0543d442652ed34a20f86c79cf735b3eec1211e77dd8e8cdaf4f55e62fad2

memory/636-31-0x00007FF95A710000-0x00007FF95A905000-memory.dmp