Malware Analysis Report

2025-01-22 16:12

Sample ID 241111-t524bs1gpn
Target 0b550e3a7a1b081aa044287270af2ab82c9533077a4ebcf2fabcd46c8fe719b6
SHA256 0b550e3a7a1b081aa044287270af2ab82c9533077a4ebcf2fabcd46c8fe719b6
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

0b550e3a7a1b081aa044287270af2ab82c9533077a4ebcf2fabcd46c8fe719b6

Threat Level: Known bad

The file 0b550e3a7a1b081aa044287270af2ab82c9533077a4ebcf2fabcd46c8fe719b6 was found to be: Known bad.

Malicious Activity Summary

discovery macro xlm

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 WriteProcessMemory

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 16:39

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 16:39

Reported

2024-11-11 16:41

Platform

win7-20240903-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\0b550e3a7a1b081aa044287270af2ab82c9533077a4ebcf2fabcd46c8fe719b6.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\0b550e3a7a1b081aa044287270af2ab82c9533077a4ebcf2fabcd46c8fe719b6.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 2.23.210.82:80 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 2.19.117.22:80 crl.microsoft.com tcp

Files

memory/2100-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2100-1-0x00000000725ED000-0x00000000725F8000-memory.dmp

C:\Users\Admin\wnrul.ocx

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

memory/2100-21-0x00000000725ED000-0x00000000725F8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 16:39

Reported

2024-11-11 16:41

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\0b550e3a7a1b081aa044287270af2ab82c9533077a4ebcf2fabcd46c8fe719b6.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 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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 696 wrote to memory of 2372 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\SYSTEM32\regsvr32.exe
PID 696 wrote to memory of 2372 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\0b550e3a7a1b081aa044287270af2ab82c9533077a4ebcf2fabcd46c8fe719b6.xls"

C:\Windows\SYSTEM32\regsvr32.exe

regsvr32.exe ..\wnrul.ocx

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.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
US 8.8.8.8:53 46.28.109.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 47.28.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa 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
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 122.117.43.179.in-addr.arpa udp
US 8.8.8.8:53 32.169.19.2.in-addr.arpa udp
US 8.8.8.8:53 75.210.23.2.in-addr.arpa udp
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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 224.162.46.104.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 72.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

memory/696-1-0x00007FFCE634D000-0x00007FFCE634E000-memory.dmp

memory/696-2-0x00007FFCA6330000-0x00007FFCA6340000-memory.dmp

memory/696-3-0x00007FFCA6330000-0x00007FFCA6340000-memory.dmp

memory/696-0-0x00007FFCA6330000-0x00007FFCA6340000-memory.dmp

memory/696-6-0x00007FFCE62B0000-0x00007FFCE64A5000-memory.dmp

memory/696-5-0x00007FFCE62B0000-0x00007FFCE64A5000-memory.dmp

memory/696-7-0x00007FFCA6330000-0x00007FFCA6340000-memory.dmp

memory/696-4-0x00007FFCA6330000-0x00007FFCA6340000-memory.dmp

memory/696-9-0x00007FFCE62B0000-0x00007FFCE64A5000-memory.dmp

memory/696-8-0x00007FFCE62B0000-0x00007FFCE64A5000-memory.dmp

memory/696-10-0x00007FFCA40B0000-0x00007FFCA40C0000-memory.dmp

memory/696-12-0x00007FFCE62B0000-0x00007FFCE64A5000-memory.dmp

memory/696-11-0x00007FFCE62B0000-0x00007FFCE64A5000-memory.dmp

memory/696-13-0x00007FFCA40B0000-0x00007FFCA40C0000-memory.dmp

C:\Users\Admin\wnrul.ocx

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

memory/696-35-0x00007FFCE62B0000-0x00007FFCE64A5000-memory.dmp

memory/696-36-0x00007FFCE634D000-0x00007FFCE634E000-memory.dmp

memory/696-37-0x00007FFCE62B0000-0x00007FFCE64A5000-memory.dmp

memory/696-38-0x00007FFCE62B0000-0x00007FFCE64A5000-memory.dmp

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

MD5 9af1fbc3d3158a30a797a0f773d24251
SHA1 783670400768bd5f7a7d2460a745af0f75a6c807
SHA256 e71695c648650d2ae756cda451453cdf9fc85ad5d1f1942f45bb541d7f3f3d9c
SHA512 d4208118b6ebdf5dca8b119ddf352d5b9f87716f2eb51fa2c1cc1668b91689716b0a3660b9056fc488555aee760d33bdad71f0948636f6c27e54bd4b2c24afba