Malware Analysis Report

2025-03-15 07:00

Sample ID 231231-gf5fyagfgj
Target 2a8ad569d0f6d94fb0f51fb3ff2091df
SHA256 62bfcfccce59854a16e8817060b75c86977c900043958a9eebeeb9bf51877579
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

62bfcfccce59854a16e8817060b75c86977c900043958a9eebeeb9bf51877579

Threat Level: Known bad

The file 2a8ad569d0f6d94fb0f51fb3ff2091df was found to be: Known bad.

Malicious Activity Summary

macro xlm

Process spawned unexpected child process

Suspicious Office macro

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates system info in registry

Modifies Internet Explorer settings

Checks processor information in registry

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-31 05:45

Signatures

Suspicious Office macro

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-31 05:45

Reported

2024-01-02 08:56

Platform

win7-20231129-en

Max time kernel

0s

Max time network

119s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\2a8ad569d0f6d94fb0f51fb3ff2091df.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-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\Toolbar C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\MenuExt C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\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-1-5-21-3627615824-4061627003-3019543961-1000\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-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" 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\2a8ad569d0f6d94fb0f51fb3ff2091df.xls

C:\Windows\SysWOW64\rundll32.exe

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

Network

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

Files

memory/2368-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2368-1-0x00000000727DD000-0x00000000727E8000-memory.dmp

memory/2368-2-0x00000000727DD000-0x00000000727E8000-memory.dmp

memory/2368-3-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2368-4-0x00000000727DD000-0x00000000727E8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-31 05:45

Reported

2024-01-02 08:57

Platform

win10v2004-20231215-en

Max time kernel

175s

Max time network

188s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\2a8ad569d0f6d94fb0f51fb3ff2091df.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-1-5-21-983843758-932321429-1636175382-1000_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
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 920 wrote to memory of 2552 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 920 wrote to memory of 2552 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 3636 wrote to memory of 2484 N/A C:\Windows\explorer.exe C:\Windows\System32\WScript.exe
PID 3636 wrote to memory of 2484 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\2a8ad569d0f6d94fb0f51fb3ff2091df.xls"

C:\Windows\explorer.exe

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

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 46.28.109.52.in-addr.arpa udp
US 8.8.8.8:53 187.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 syracuse.best udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 137.71.105.51.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net 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 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 14.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 50.134.221.88.in-addr.arpa udp

Files

memory/920-0-0x00007FF8DAE30000-0x00007FF8DAE40000-memory.dmp

memory/920-1-0x00007FF8DAE30000-0x00007FF8DAE40000-memory.dmp

memory/920-2-0x00007FF8DAE30000-0x00007FF8DAE40000-memory.dmp

memory/920-4-0x00007FF8DAE30000-0x00007FF8DAE40000-memory.dmp

memory/920-3-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-5-0x00007FF8DAE30000-0x00007FF8DAE40000-memory.dmp

memory/920-6-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-7-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-9-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-11-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-10-0x00007FF8D8BC0000-0x00007FF8D8BD0000-memory.dmp

memory/920-13-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-14-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-15-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-16-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-17-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-12-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-19-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-20-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-22-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-21-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-23-0x00007FF8D8BC0000-0x00007FF8D8BD0000-memory.dmp

memory/920-18-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

memory/920-8-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp

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

MD5 2073c9c2b52021801934f01a2004be05
SHA1 e660ee134d355cd8325b21b71669de14a6b783c5
SHA256 1b3ce14316a8b9619840141cceef98a0ad951b70a504f3b5486783b5aa301dde
SHA512 aa38a26944ffd0c84cf402e0897d112c787d3647919670270627c4c082ebdba7f3ea2766ffe9c2fce6920ec14771945498cb817442ba7bb6d96c416986f4cf11

memory/920-35-0x00007FF91ADB0000-0x00007FF91AFA5000-memory.dmp