Malware Analysis Report

2024-10-24 17:10

Sample ID 240904-1z52csxdjl
Target 94c4e47f8d07964aa50f0247b42d01681613f11d388c030c6835025e35b23340
SHA256 94c4e47f8d07964aa50f0247b42d01681613f11d388c030c6835025e35b23340
Tags
macro xlm discovery
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

94c4e47f8d07964aa50f0247b42d01681613f11d388c030c6835025e35b23340

Threat Level: Known bad

The file 94c4e47f8d07964aa50f0247b42d01681613f11d388c030c6835025e35b23340 was found to be: Known bad.

Malicious Activity Summary

macro xlm discovery

Process spawned unexpected child process

Suspicious Office macro

System Location Discovery: System Language Discovery

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious use of FindShellTrayWindow

Enumerates system info in registry

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-04 22:06

Signatures

Suspicious Office macro

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-04 22:06

Reported

2024-09-04 22:07

Platform

win7-20240903-en

Max time kernel

19s

Max time network

16s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\94c4e47f8d07964aa50f0247b42d01681613f11d388c030c6835025e35b23340.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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

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

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\94c4e47f8d07964aa50f0247b42d01681613f11d388c030c6835025e35b23340.xls

C:\Windows\SysWOW64\rundll32.exe

"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\oPzLk7B.txt,DllRegisterServer

Network

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

Files

memory/1744-1-0x00000000727ED000-0x00000000727F8000-memory.dmp

memory/1744-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/1744-2-0x00000000727ED000-0x00000000727F8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-04 22:06

Reported

2024-09-04 22:07

Platform

win10v2004-20240802-en

Max time kernel

59s

Max time network

34s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\94c4e47f8d07964aa50f0247b42d01681613f11d388c030c6835025e35b23340.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 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
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000_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 4424 wrote to memory of 2576 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 4424 wrote to memory of 2576 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 1492 wrote to memory of 3176 N/A C:\Windows\explorer.exe C:\Windows\System32\WScript.exe
PID 1492 wrote to memory of 3176 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\94c4e47f8d07964aa50f0247b42d01681613f11d388c030c6835025e35b23340.xls"

C:\Windows\explorer.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
GB 52.109.28.47:443 roaming.officeapps.live.com tcp
US 8.8.8.8:53 240.76.109.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 47.28.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 markens.online udp
US 8.8.8.8:53 66.229.138.52.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/4424-0-0x00007FFE8F18D000-0x00007FFE8F18E000-memory.dmp

memory/4424-1-0x00007FFE4F170000-0x00007FFE4F180000-memory.dmp

memory/4424-3-0x00007FFE4F170000-0x00007FFE4F180000-memory.dmp

memory/4424-2-0x00007FFE4F170000-0x00007FFE4F180000-memory.dmp

memory/4424-4-0x00007FFE4F170000-0x00007FFE4F180000-memory.dmp

memory/4424-5-0x00007FFE4F170000-0x00007FFE4F180000-memory.dmp

memory/4424-6-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-9-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-11-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-10-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-12-0x00007FFE4D080000-0x00007FFE4D090000-memory.dmp

memory/4424-8-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-13-0x00007FFE4D080000-0x00007FFE4D090000-memory.dmp

memory/4424-7-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-15-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-16-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-23-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-22-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-21-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-20-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-19-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-18-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-17-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-14-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

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

MD5 84cf91be20b674976ab80f4373b052eb
SHA1 72567e3f1d76d88c3c06b4499618497fc66cc6f2
SHA256 f84804510e754a81b90a447569b2f78c8869658395afad3b8089bdcb4049561c
SHA512 8597c90704438723c87326c2637592e93e66c461bd23d20c05431f6941f5ddb24cc88a25d46a2f2e5f05efe74d2e63910843abefdf2533aed6182ce7eda7f8f9

memory/4424-35-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp

memory/4424-36-0x00007FFE8F18D000-0x00007FFE8F18E000-memory.dmp

memory/4424-37-0x00007FFE8F0F0000-0x00007FFE8F2E5000-memory.dmp