Malware Analysis Report

2025-03-15 07:22

Sample ID 241111-zbtgzswbmj
Target f67a7c9157e4689159efbe72d02d54e77dd14710bd675cf3cc049c58c9705d09
SHA256 f67a7c9157e4689159efbe72d02d54e77dd14710bd675cf3cc049c58c9705d09
Tags
macro xlm discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

f67a7c9157e4689159efbe72d02d54e77dd14710bd675cf3cc049c58c9705d09

Threat Level: Known bad

The file f67a7c9157e4689159efbe72d02d54e77dd14710bd675cf3cc049c58c9705d09 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

Enumerates system info in registry

Suspicious behavior: AddClipboardFormatListener

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 20:33

Signatures

Suspicious Office macro

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 20:33

Reported

2024-11-11 20:35

Platform

win10v2004-20241007-en

Max time kernel

133s

Max time network

138s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\f67a7c9157e4689159efbe72d02d54e77dd14710bd675cf3cc049c58c9705d09.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\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 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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3932 wrote to memory of 3164 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\SYSTEM32\regsvr32.exe
PID 3932 wrote to memory of 3164 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\SYSTEM32\regsvr32.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\f67a7c9157e4689159efbe72d02d54e77dd14710bd675cf3cc049c58c9705d09.xls"

C:\Windows\SYSTEM32\regsvr32.exe

regsvr32.exe ..\wnrul.ocx

Network

Country Destination Domain Proto
US 8.8.8.8:53 18.89.109.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
GB 52.109.28.47:443 roaming.officeapps.live.com tcp
US 8.8.8.8:53 www.escueladecinemza.com.ar udp
AR 179.43.117.122:443 www.escueladecinemza.com.ar tcp
US 8.8.8.8:53 47.28.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 122.117.43.179.in-addr.arpa udp
US 8.8.8.8:53 r10.o.lencr.org udp
GB 2.23.210.75:80 r10.o.lencr.org tcp
AR 179.43.117.122:80 www.escueladecinemza.com.ar tcp
US 8.8.8.8:53 69.194.219.23.in-addr.arpa udp
US 8.8.8.8:53 75.210.23.2.in-addr.arpa udp
AR 179.43.117.122:443 www.escueladecinemza.com.ar tcp
US 8.8.8.8:53 escueladecinemza.com.ar udp
AR 179.43.117.122:443 escueladecinemza.com.ar tcp
US 8.8.8.8:53 12.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp

Files

memory/3932-3-0x00007FFFB8710000-0x00007FFFB8720000-memory.dmp

memory/3932-0-0x00007FFFB8710000-0x00007FFFB8720000-memory.dmp

memory/3932-1-0x00007FFFF872D000-0x00007FFFF872E000-memory.dmp

memory/3932-2-0x00007FFFB8710000-0x00007FFFB8720000-memory.dmp

memory/3932-4-0x00007FFFB8710000-0x00007FFFB8720000-memory.dmp

memory/3932-5-0x00007FFFB8710000-0x00007FFFB8720000-memory.dmp

memory/3932-8-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-12-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-11-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-10-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-13-0x00007FFFB5E60000-0x00007FFFB5E70000-memory.dmp

memory/3932-9-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-14-0x00007FFFB5E60000-0x00007FFFB5E70000-memory.dmp

memory/3932-7-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-16-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-17-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-19-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-20-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-18-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-15-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-6-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

C:\Users\Admin\wnrul.ocx

MD5 3ffd9a2715e478a2442c309536507f93
SHA1 1d3a2db3cf0e80f972084f0d83adbf7f77578f75
SHA256 35e3dd8043744d5c6ea3f008188d397312d355ada64cbed3b2c641daf28f5ae3
SHA512 311c4b871903a69053910b65e01285d181659d1117d9e5332c12ad801a3d9f5087ae7ae9ecfe507121126205bcb5b40debfc6589715b8ccfed6e8e7cfe6317b9

memory/3932-42-0x00007FFFF872D000-0x00007FFFF872E000-memory.dmp

memory/3932-43-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

memory/3932-47-0x00007FFFF8690000-0x00007FFFF8885000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-11 20:33

Reported

2024-11-11 20:35

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\f67a7c9157e4689159efbe72d02d54e77dd14710bd675cf3cc049c58c9705d09.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\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\f67a7c9157e4689159efbe72d02d54e77dd14710bd675cf3cc049c58c9705d09.xls

C:\Windows\SysWOW64\regsvr32.exe

regsvr32.exe ..\wnrul.ocx

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.escueladecinemza.com.ar udp
AR 179.43.117.122:443 www.escueladecinemza.com.ar tcp
US 8.8.8.8:53 r10.o.lencr.org udp
GB 2.23.210.75:80 r10.o.lencr.org tcp
AR 179.43.117.122:80 www.escueladecinemza.com.ar tcp
AR 179.43.117.122:443 www.escueladecinemza.com.ar tcp
US 8.8.8.8:53 escueladecinemza.com.ar udp
AR 179.43.117.122:443 escueladecinemza.com.ar tcp
US 8.8.8.8:53 crl.microsoft.com udp
GB 2.19.117.18:80 crl.microsoft.com tcp

Files

memory/1732-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/1732-1-0x000000007213D000-0x0000000072148000-memory.dmp

C:\Users\Admin\wnrul.ocx

MD5 3ffd9a2715e478a2442c309536507f93
SHA1 1d3a2db3cf0e80f972084f0d83adbf7f77578f75
SHA256 35e3dd8043744d5c6ea3f008188d397312d355ada64cbed3b2c641daf28f5ae3
SHA512 311c4b871903a69053910b65e01285d181659d1117d9e5332c12ad801a3d9f5087ae7ae9ecfe507121126205bcb5b40debfc6589715b8ccfed6e8e7cfe6317b9

memory/1732-21-0x000000007213D000-0x0000000072148000-memory.dmp