Malware Analysis Report

2025-01-22 16:11

Sample ID 241111-wadtcssfmm
Target 10f3e425615b3c4b3f10fed7215c5a070abcd31b21e839d5e05ad652d128b11e
SHA256 10f3e425615b3c4b3f10fed7215c5a070abcd31b21e839d5e05ad652d128b11e
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

10f3e425615b3c4b3f10fed7215c5a070abcd31b21e839d5e05ad652d128b11e

Threat Level: Known bad

The file 10f3e425615b3c4b3f10fed7215c5a070abcd31b21e839d5e05ad652d128b11e 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

Enumerates system info in registry

Checks processor information in registry

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 17:42

Signatures

Suspicious Office macro

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-11 17:42

Reported

2024-11-11 17:45

Platform

win7-20241010-en

Max time kernel

61s

Max time network

134s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\10f3e425615b3c4b3f10fed7215c5a070abcd31b21e839d5e05ad652d128b11e.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\regsvr32.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\regsvr32.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\10f3e425615b3c4b3f10fed7215c5a070abcd31b21e839d5e05ad652d128b11e.xlsm

C:\Windows\SysWow64\regsvr32.exe

C:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.ajaxmatters.com udp
US 172.67.147.196:80 www.ajaxmatters.com tcp
US 172.67.147.196:443 www.ajaxmatters.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.187.227:80 c.pki.goog tcp

Files

memory/2304-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2304-1-0x00000000722CD000-0x00000000722D8000-memory.dmp

C:\Users\Admin\rfs.dll

MD5 4ed8ca5542b641fddd200acebadf4e3c
SHA1 41fd7fb6cb84805fbc229cbf13620f80a5008003
SHA256 3f03ee986c82c3be72da6272448f92d97426f53e07079334edeb502f6386cc33
SHA512 866719609b7200cdd4d97b6a83d7fb6424d3900b555e23d2db8744539b1ae204c0da0a5e595c676ee4cad7df3f743aad1e746c750cd30afe3a74d89bf188979a

memory/2304-26-0x00000000722CD000-0x00000000722D8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 17:42

Reported

2024-11-11 17:45

Platform

win10v2004-20241007-en

Max time kernel

133s

Max time network

150s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\10f3e425615b3c4b3f10fed7215c5a070abcd31b21e839d5e05ad652d128b11e.xlsm"

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\SysWow64\regsvr32.exe C:\Program Files\Microsoft Office\Root\Office16\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\regsvr32.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
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

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

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

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\10f3e425615b3c4b3f10fed7215c5a070abcd31b21e839d5e05ad652d128b11e.xlsm"

C:\Windows\SysWow64\regsvr32.exe

C:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 107.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
FR 52.109.68.129:443 roaming.officeapps.live.com tcp
US 8.8.8.8:53 www.ajaxmatters.com udp
US 104.21.28.230:80 www.ajaxmatters.com tcp
US 8.8.8.8:53 240.76.109.52.in-addr.arpa udp
US 8.8.8.8:53 129.68.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 104.21.28.230:443 www.ajaxmatters.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.187.227:80 c.pki.goog tcp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 230.28.21.104.in-addr.arpa udp
US 8.8.8.8:53 227.187.250.142.in-addr.arpa udp
US 8.8.8.8:53 208.143.182.52.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 82.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/4332-1-0x00007FFC45F6D000-0x00007FFC45F6E000-memory.dmp

memory/4332-0-0x00007FFC05F50000-0x00007FFC05F60000-memory.dmp

memory/4332-3-0x00007FFC05F50000-0x00007FFC05F60000-memory.dmp

memory/4332-5-0x00007FFC05F50000-0x00007FFC05F60000-memory.dmp

memory/4332-6-0x00007FFC45ED0000-0x00007FFC460C5000-memory.dmp

memory/4332-4-0x00007FFC05F50000-0x00007FFC05F60000-memory.dmp

memory/4332-8-0x00007FFC45ED0000-0x00007FFC460C5000-memory.dmp

memory/4332-7-0x00007FFC45ED0000-0x00007FFC460C5000-memory.dmp

memory/4332-10-0x00007FFC45ED0000-0x00007FFC460C5000-memory.dmp

memory/4332-9-0x00007FFC45ED0000-0x00007FFC460C5000-memory.dmp

memory/4332-2-0x00007FFC05F50000-0x00007FFC05F60000-memory.dmp

memory/4332-12-0x00007FFC03EF0000-0x00007FFC03F00000-memory.dmp

memory/4332-11-0x00007FFC45ED0000-0x00007FFC460C5000-memory.dmp

memory/4332-13-0x00007FFC03EF0000-0x00007FFC03F00000-memory.dmp

C:\Users\Admin\rfs.dll

MD5 4ed8ca5542b641fddd200acebadf4e3c
SHA1 41fd7fb6cb84805fbc229cbf13620f80a5008003
SHA256 3f03ee986c82c3be72da6272448f92d97426f53e07079334edeb502f6386cc33
SHA512 866719609b7200cdd4d97b6a83d7fb6424d3900b555e23d2db8744539b1ae204c0da0a5e595c676ee4cad7df3f743aad1e746c750cd30afe3a74d89bf188979a

memory/4332-35-0x00007FFC45ED0000-0x00007FFC460C5000-memory.dmp

memory/4332-36-0x00007FFC45F6D000-0x00007FFC45F6E000-memory.dmp

memory/4332-37-0x00007FFC45ED0000-0x00007FFC460C5000-memory.dmp

memory/4332-38-0x00007FFC45ED0000-0x00007FFC460C5000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

MD5 cff067e3ac62a4d9f71295c5ffdcac0a
SHA1 dc998ee40eba2d8872962f0e46af21344c9b83ff
SHA256 b0483a6c682b56461c59b131441df0566eb4c1ca908f853ae030e4bd5d4326a6
SHA512 c6da76a0e5c9150ac7806eea3cccbf9fafac0adcc1b072c873c9a42a752d8b9da26253e8d0307669b427f77bb227af04fdbf99e40e9bd56cfcb66e6d434e4b18