Malware Analysis Report

2025-03-15 07:00

Sample ID 231231-fylacabgcn
Target 29a5ee5c62d2a1b6288ccd499d020f2d
SHA256 55a0b4992d4b6721998ac92e3cc4fa9b3384c71edf0e12cabb666359c654516d
Tags
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

55a0b4992d4b6721998ac92e3cc4fa9b3384c71edf0e12cabb666359c654516d

Threat Level: Known bad

The file 29a5ee5c62d2a1b6288ccd499d020f2d was found to be: Known bad.

Malicious Activity Summary

xlm

Process spawned unexpected child process

Process spawned suspicious child process

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Checks processor information in registry

Enumerates system info in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-31 05:16

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-31 05:16

Reported

2024-01-02 07:33

Platform

win7-20231215-en

Max time kernel

0s

Max time network

118s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\29a5ee5c62d2a1b6288ccd499d020f2d.xlsm

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\wscript.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-1-5-21-3601492379-692465709-652514833-1000\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

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\29a5ee5c62d2a1b6288ccd499d020f2d.xlsm

C:\Windows\SysWOW64\wscript.exe

wscript C:\zer\spp.vbs

Network

Country Destination Domain Proto
NL 46.17.98.187:80 tcp
NL 46.17.98.187:80 tcp
US 8.8.8.8:53 google.com udp
GB 216.58.212.238:80 google.com tcp

Files

memory/1520-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/1520-1-0x0000000071D1D000-0x0000000071D28000-memory.dmp

memory/1520-2-0x0000000071D1D000-0x0000000071D28000-memory.dmp

memory/1520-5-0x0000000071D1D000-0x0000000071D28000-memory.dmp

memory/1520-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-31 05:16

Reported

2024-01-02 07:33

Platform

win10v2004-20231215-en

Max time kernel

155s

Max time network

168s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\29a5ee5c62d2a1b6288ccd499d020f2d.xlsm"

Signatures

Process spawned suspicious 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:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.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:\Windows\system32\dwwin.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\system32\dwwin.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\system32\dwwin.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Windows\system32\dwwin.exe N/A
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Windows\system32\dwwin.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

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\29a5ee5c62d2a1b6288ccd499d020f2d.xlsm"

C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE

"C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 3936

C:\Windows\system32\dwwin.exe

C:\Windows\system32\dwwin.exe -x -s 3936

Network

Country Destination Domain Proto
US 8.8.8.8:53 19.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.76.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.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 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 211.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 35.197.79.40.in-addr.arpa udp

Files

memory/1428-0-0x00007FFE3D8B0000-0x00007FFE3D8C0000-memory.dmp

memory/1428-1-0x00007FFE3D8B0000-0x00007FFE3D8C0000-memory.dmp

memory/1428-2-0x00007FFE3D8B0000-0x00007FFE3D8C0000-memory.dmp

memory/1428-3-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-4-0x00007FFE3D8B0000-0x00007FFE3D8C0000-memory.dmp

memory/1428-5-0x00007FFE3D8B0000-0x00007FFE3D8C0000-memory.dmp

memory/1428-6-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-7-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-9-0x00007FFE3B850000-0x00007FFE3B860000-memory.dmp

memory/1428-8-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-10-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-12-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-14-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-17-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-18-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-19-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-21-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-22-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-20-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-16-0x00007FFE3B850000-0x00007FFE3B860000-memory.dmp

memory/1428-15-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-13-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-11-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/5100-28-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/5100-29-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/5100-32-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/5100-33-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/5100-31-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/5100-26-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/1428-38-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/5100-42-0x00007FFE3D8B0000-0x00007FFE3D8C0000-memory.dmp

memory/5100-46-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/5100-45-0x00007FFE7D830000-0x00007FFE7DA25000-memory.dmp

memory/5100-44-0x00007FFE3D8B0000-0x00007FFE3D8C0000-memory.dmp

memory/5100-43-0x00007FFE3D8B0000-0x00007FFE3D8C0000-memory.dmp

memory/5100-41-0x00007FFE3D8B0000-0x00007FFE3D8C0000-memory.dmp