Malware Analysis Report

2025-03-15 07:09

Sample ID 230301-1kcfhahh3y
Target quakbot_modified.xls
SHA256 20d33b79e5c5fceee471966035b5d60d8b09e62b8024c34688c864c576d271ff
Tags
macro xlm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

20d33b79e5c5fceee471966035b5d60d8b09e62b8024c34688c864c576d271ff

Threat Level: Known bad

The file quakbot_modified.xls was found to be: Known bad.

Malicious Activity Summary

macro xlm

Process spawned unexpected child process

Suspicious Office macro

Checks processor information in registry

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: LoadsDriver

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates system info in registry

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-03-01 21:42

Signatures

Suspicious Office macro

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-01 21:42

Reported

2023-03-01 21:44

Platform

win10v2004-20230220-en

Max time kernel

95s

Max time network

103s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\quakbot_modified.xlsb"

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\regsvr32.exe C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process N/A C:\Windows\SYSTEM32\regsvr32.exe C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process N/A C:\Windows\SYSTEM32\regsvr32.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

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious behavior: LoadsDriver

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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\quakbot_modified.xlsb"

C:\Windows\SYSTEM32\regsvr32.exe

regsvr32 /s calc

C:\Windows\SYSTEM32\regsvr32.exe

regsvr32 C:\Hefaggad\Ukdfaovkga\Buuefafa.dll

C:\Windows\SYSTEM32\regsvr32.exe

regsvr32 C:\Hefaggad\Ukdfaovkga\Buuefafb.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 226.101.242.52.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 1.202.248.87.in-addr.arpa udp
US 8.8.8.8:53 151.122.125.40.in-addr.arpa udp
US 8.8.8.8:53 176.122.125.40.in-addr.arpa udp
US 8.8.8.8:53 24.32.109.52.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 62.13.109.52.in-addr.arpa udp
US 8.8.8.8:53 insomnihack.ch udp
US 172.67.135.100:80 insomnihack.ch tcp
US 172.67.135.100:443 insomnihack.ch tcp
US 8.8.8.8:53 100.135.67.172.in-addr.arpa udp
US 8.8.8.8:53 216.74.101.95.in-addr.arpa udp
US 8.8.8.8:53 8.179.89.13.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 52.168.117.169:443 tcp
US 8.8.8.8:53 64.13.109.52.in-addr.arpa udp
US 93.184.220.29:80 tcp
US 8.247.210.254:80 tcp
US 8.8.8.8:53 85.48.222.23.in-addr.arpa udp
US 8.247.210.254:80 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 api.msn.com tcp

Files

memory/1056-133-0x00007FF993C30000-0x00007FF993C40000-memory.dmp

memory/1056-134-0x00007FF993C30000-0x00007FF993C40000-memory.dmp

memory/1056-135-0x00007FF993C30000-0x00007FF993C40000-memory.dmp

memory/1056-136-0x00007FF993C30000-0x00007FF993C40000-memory.dmp

memory/1056-137-0x00007FF993C30000-0x00007FF993C40000-memory.dmp

memory/1056-138-0x00007FF9912D0000-0x00007FF9912E0000-memory.dmp

memory/1056-139-0x00007FF9912D0000-0x00007FF9912E0000-memory.dmp

C:\Hefaggad\Ukdfaovkga\Buuefafa.dll

MD5 98cba201e6c4f835e8b98e591bb131bb
SHA1 89fa1c714cf978517d9de54b6a5cbdbb7b6fd1a8
SHA256 9eaeb027e0b9fc6ff89cc287fe856927776f4019945b1597d5d79e4c38b45492
SHA512 da23af6d6afec40f1774a4b89cccc862a7d6f2e9fd3749a24a6b810b31cd971584d30604292dc2f276b81b71531c24e3377720f9a33f426de8f87c4671e6af7d