Malware Analysis Report

2025-01-22 16:05

Sample ID 241108-zxj6fazejr
Target 91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074
SHA256 91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074
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

91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074

Threat Level: Known bad

The file 91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074 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 use of SetWindowsHookEx

Modifies registry class

Suspicious use of FindShellTrayWindow

Enumerates system info in registry

Suspicious behavior: AddClipboardFormatListener

Suspicious use of WriteProcessMemory

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-08 21:05

Signatures

Suspicious Office macro

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-08 21:05

Reported

2024-11-08 21:06

Platform

win7-20241023-en

Max time kernel

19s

Max time network

17s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074.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:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.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\91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074.xls

C:\Windows\SysWOW64\rundll32.exe

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

Network

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

Files

memory/1956-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/1956-1-0x0000000071F8D000-0x0000000071F98000-memory.dmp

memory/1956-2-0x0000000071F8D000-0x0000000071F98000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-08 21:05

Reported

2024-11-08 21:06

Platform

win10v2004-20241007-en

Max time kernel

59s

Max time network

58s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074.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-1-5-21-1045960512-3948844814-3059691613-1000_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 1900 wrote to memory of 2440 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 1900 wrote to memory of 2440 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\explorer.exe
PID 4124 wrote to memory of 1412 N/A C:\Windows\explorer.exe C:\Windows\System32\WScript.exe
PID 4124 wrote to memory of 1412 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\91d861616547fa15ed365dbb5562abd70abdea2f351bbf0d04a4bd1d8fc6d074.xls"

C:\Windows\explorer.exe

explorer.exe C:\Users\Public\Documents\J8t0HoAC.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\J8t0HoAC.vbs"

Network

Country Destination Domain Proto
US 8.8.8.8:53 roaming.officeapps.live.com udp
IE 52.109.76.243:443 roaming.officeapps.live.com tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 18.89.109.52.in-addr.arpa udp
US 8.8.8.8:53 syracuse.best udp
US 8.8.8.8:53 243.76.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 3.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 71.209.201.84.in-addr.arpa udp

Files

memory/1900-1-0x00007FF9067AD000-0x00007FF9067AE000-memory.dmp

memory/1900-3-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp

memory/1900-0-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp

memory/1900-2-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp

memory/1900-5-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-6-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-7-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-8-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp

memory/1900-4-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp

memory/1900-12-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-13-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-14-0x00007FF8C4290000-0x00007FF8C42A0000-memory.dmp

memory/1900-11-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-10-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-9-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-15-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-16-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-17-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-18-0x00007FF8C4290000-0x00007FF8C42A0000-memory.dmp

C:\Users\Public\Documents\J8t0HoAC.vbs

MD5 a04c7a641958c6ce83ba9f70903e5fb4
SHA1 1e9bec7c956e6906258d5c7c1a3984d54b06b526
SHA256 1c548bbac3d414d74f26fe02c65aac9749b8d5ab067e078cf7d3cd75a59edfb9
SHA512 539bad66306114eb9ff1f70aaf3d90536b7036d34adc35108675c9a37aeb15b72bae671bcd6c6229689b4954f41c8bdfd5c0295ed0f2b1495d1e9a7df77ffc05

memory/1900-30-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-31-0x00007FF9067AD000-0x00007FF9067AE000-memory.dmp

memory/1900-32-0x00007FF906710000-0x00007FF906905000-memory.dmp

memory/1900-33-0x00007FF906710000-0x00007FF906905000-memory.dmp