Malware Analysis Report

2025-01-22 15:41

Sample ID 231222-lq19gsehhr
Target 8257b3861aa2159f9ea34cc03368892a
SHA256 3b904be4cc0e8cff559c2895974da1280b2667e69c53a2786935ddab52d94c30
Tags
macro xlm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

3b904be4cc0e8cff559c2895974da1280b2667e69c53a2786935ddab52d94c30

Threat Level: Known bad

The file 8257b3861aa2159f9ea34cc03368892a was found to be: Known bad.

Malicious Activity Summary

macro xlm

Process spawned unexpected child process

Suspicious Office macro

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Enumerates system info in registry

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Modifies Internet Explorer settings

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-22 09:45

Signatures

Suspicious Office macro

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-22 09:45

Reported

2023-12-22 10:48

Platform

win10v2004-20231215-en

Max time kernel

150s

Max time network

154s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\8257b3861aa2159f9ea34cc03368892a.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\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
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Enumerates system info in registry

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

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000_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 4840 wrote to memory of 3340 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 4840 wrote to memory of 3340 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 2200 wrote to memory of 4632 N/A C:\Windows\explorer.exe C:\Windows\System32\WScript.exe
PID 2200 wrote to memory of 4632 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\8257b3861aa2159f9ea34cc03368892a.xls"

C:\Windows\explorer.exe

explorer.exe C:\Users\Public\Documents\mzJB.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\mzJB.vbs"

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 19.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 18.89.109.52.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 markens.online udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 169.117.168.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/4840-0-0x00007FF927390000-0x00007FF9273A0000-memory.dmp

memory/4840-2-0x00007FF927390000-0x00007FF9273A0000-memory.dmp

memory/4840-1-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-5-0x00007FF927390000-0x00007FF9273A0000-memory.dmp

memory/4840-6-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-8-0x00007FF927390000-0x00007FF9273A0000-memory.dmp

memory/4840-10-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-12-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-14-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-16-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-18-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-19-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-17-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-22-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-23-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-20-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-21-0x00007FF924D70000-0x00007FF924D80000-memory.dmp

memory/4840-15-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-13-0x00007FF924D70000-0x00007FF924D80000-memory.dmp

memory/4840-11-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-9-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-7-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-4-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-3-0x00007FF927390000-0x00007FF9273A0000-memory.dmp

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

MD5 b3f5658760806a06c4d4cbb43c7672cb
SHA1 fa3b750a3111831af293feefa3305b638887a7ec
SHA256 a436c5b0e421e5721ba5b49b9b62ef0bab4ebe5d1ea44ee6d8ca76c983a4540b
SHA512 bea8264a12f3a35f3cf419cb597f1c716089cf1ac8cfc00ab31876a002db5fe7c564adc4d917bfaefb1a23c290ad23e61779519141a02980759022fc786c1338

memory/4840-35-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-36-0x00007FF967310000-0x00007FF967505000-memory.dmp

memory/4840-37-0x00007FF967310000-0x00007FF967505000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-22 09:45

Reported

2023-12-22 10:49

Platform

win7-20231215-en

Max time kernel

0s

Max time network

120s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\8257b3861aa2159f9ea34cc03368892a.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
Key created \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\MenuExt C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\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-1-5-21-3818056530-936619650-3554021955-1000\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-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\Toolbar C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" 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\8257b3861aa2159f9ea34cc03368892a.xls

C:\Windows\SysWOW64\rundll32.exe

"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\Vuuf0.txt,DllRegisterServer

Network

Country Destination Domain Proto
US 8.8.8.8:53 markens.online udp

Files

memory/2492-1-0x000000007257D000-0x0000000072588000-memory.dmp

memory/2492-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2492-2-0x000000007257D000-0x0000000072588000-memory.dmp

memory/2492-3-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2492-4-0x000000007257D000-0x0000000072588000-memory.dmp