Malware Analysis Report

2025-03-15 06:58

Sample ID 240109-l8brjsecgj
Target 4e08c617b1df3a821ec96bbe7a6ae1d4
SHA256 4a2bd8eefd6d99d44b26f903dcfbc7b994ef63b0a854808e0afe8a3d9ee57173
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

4a2bd8eefd6d99d44b26f903dcfbc7b994ef63b0a854808e0afe8a3d9ee57173

Threat Level: Known bad

The file 4e08c617b1df3a821ec96bbe7a6ae1d4 was found to be: Known bad.

Malicious Activity Summary

macro xlm

Process spawned unexpected child process

Suspicious Office macro

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Checks processor information in registry

Enumerates system info in registry

Modifies registry class

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Modifies Internet Explorer settings

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-09 10:11

Signatures

Suspicious Office macro

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-09 10:11

Reported

2024-01-09 10:14

Platform

win7-20231215-en

Max time kernel

7s

Max time network

120s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\4e08c617b1df3a821ec96bbe7a6ae1d4.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

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\MenuExt C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\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-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Toolbar C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14 C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597} C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14\ = "C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A 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\4e08c617b1df3a821ec96bbe7a6ae1d4.xls

C:\Windows\SysWOW64\rundll32.exe

"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\yTD3HE.txt,DllRegisterServer

Network

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

Files

memory/2236-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2236-1-0x000000007289D000-0x00000000728A8000-memory.dmp

memory/2236-2-0x000000007289D000-0x00000000728A8000-memory.dmp

memory/2236-3-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2236-4-0x000000007289D000-0x00000000728A8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-09 10:11

Reported

2024-01-09 10:14

Platform

win10v2004-20231215-en

Max time kernel

150s

Max time network

155s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\4e08c617b1df3a821ec96bbe7a6ae1d4.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 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
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 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-1-5-21-3336304223-2978740688-3645194410-1000_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 1528 wrote to memory of 2424 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 1528 wrote to memory of 2424 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 4844 wrote to memory of 3228 N/A C:\Windows\explorer.exe C:\Windows\System32\WScript.exe
PID 4844 wrote to memory of 3228 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\4e08c617b1df3a821ec96bbe7a6ae1d4.xls"

C:\Windows\explorer.exe

explorer.exe C:\Users\Public\Documents\y7KK3.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\y7KK3.vbs"

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 18.89.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 skill.fashion 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 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 89.65.42.20.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 211.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 211.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
GB 96.17.178.174:80 tcp

Files

memory/1528-0-0x00007FF8E8C30000-0x00007FF8E8C40000-memory.dmp

memory/1528-1-0x00007FF8E8C30000-0x00007FF8E8C40000-memory.dmp

memory/1528-3-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-2-0x00007FF8E8C30000-0x00007FF8E8C40000-memory.dmp

memory/1528-4-0x00007FF8E8C30000-0x00007FF8E8C40000-memory.dmp

memory/1528-5-0x00007FF8E8C30000-0x00007FF8E8C40000-memory.dmp

memory/1528-6-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-7-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-10-0x00007FF8E6570000-0x00007FF8E6580000-memory.dmp

memory/1528-12-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-15-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-17-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-18-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-19-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-20-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-22-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-21-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-16-0x00007FF8E6570000-0x00007FF8E6580000-memory.dmp

memory/1528-14-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-13-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-11-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-9-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-8-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-34-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-35-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp

memory/1528-36-0x00007FF928BB0000-0x00007FF928DA5000-memory.dmp