Malware Analysis Report

2025-03-15 07:23

Sample ID 241111-z2sy5szmcl
Target 91f627a8e50994868cd19b1a01a258b9d008d0305064e07cbb4bc633b01338e4
SHA256 91f627a8e50994868cd19b1a01a258b9d008d0305064e07cbb4bc633b01338e4
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

91f627a8e50994868cd19b1a01a258b9d008d0305064e07cbb4bc633b01338e4

Threat Level: Known bad

The file 91f627a8e50994868cd19b1a01a258b9d008d0305064e07cbb4bc633b01338e4 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

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious use of FindShellTrayWindow

Enumerates system info in registry

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 21:13

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 21:13

Reported

2024-11-11 21:15

Platform

win7-20241010-en

Max time kernel

121s

Max time network

125s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\91f627a8e50994868cd19b1a01a258b9d008d0305064e07cbb4bc633b01338e4.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\91f627a8e50994868cd19b1a01a258b9d008d0305064e07cbb4bc633b01338e4.xlsm

C:\Windows\SysWow64\regsvr32.exe

C:\Windows\SysWow64\regsvr32.exe -s ..\wnru.ocx

Network

Country Destination Domain Proto
US 8.8.8.8:53 ausnz.net udp
US 192.96.209.82:443 ausnz.net tcp
US 8.8.8.8:53 belisip.net udp
ID 158.140.185.205:443 belisip.net tcp
US 8.8.8.8:53 blog.centerking.top udp
US 8.8.8.8:53 edu-media.cn udp
CN 123.56.83.149:443 edu-media.cn tcp
US 8.8.8.8:53 ppiabanyuwangi.or.id udp
SG 194.163.35.114:443 ppiabanyuwangi.or.id tcp
US 8.8.8.8:53 lydt.cc udp
CN 120.78.143.193:443 lydt.cc tcp
US 8.8.8.8:53 acerestoration.co.za udp
ZA 41.203.18.35:443 acerestoration.co.za tcp
US 8.8.8.8:53 r11.o.lencr.org udp
GB 2.23.210.82:80 r11.o.lencr.org tcp

Files

memory/2024-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2024-1-0x00000000722DD000-0x00000000722E8000-memory.dmp

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\4C2ECAC2A38B0FA642F6D8FBD8353762

MD5 5bfa51f3a417b98e7443eca90fc94703
SHA1 8c015d80b8a23f780bdd215dc842b0f5551f63bd
SHA256 bebe2853a3485d1c2e5c5be4249183e0ddaff9f87de71652371700a89d937128
SHA512 4cd03686254bb28754cbaa635ae1264723e2be80ce1dd0f78d1ab7aee72232f5b285f79e488e9c5c49ff343015bd07bb8433d6cee08ae3cea8c317303e3ac399

memory/2024-23-0x00000000722DD000-0x00000000722E8000-memory.dmp

C:\Users\Admin\wnru.ocx

MD5 8f7afabccec4bec42d5bf041dc45f7e5
SHA1 614359b31a2cdf02be8a12b0254f91171c32ba54
SHA256 ff0b128a0d1f6385dc4d265684b760d92be853e938e8e2e1aed3f120a5541933
SHA512 2b2e9b09d61e356cd569e097e2da2191e854590364141ad5f6d99c0a0910caa271100b26efa1457c8bd30cf4e82f54ed6fa6aa4d3fd0c0eccfd202bcc6bc4853

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 21:13

Reported

2024-11-11 21:15

Platform

win10v2004-20241007-en

Max time kernel

128s

Max time network

138s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\91f627a8e50994868cd19b1a01a258b9d008d0305064e07cbb4bc633b01338e4.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 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

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\91f627a8e50994868cd19b1a01a258b9d008d0305064e07cbb4bc633b01338e4.xlsm"

C:\Windows\SysWow64\regsvr32.exe

C:\Windows\SysWow64\regsvr32.exe -s ..\wnru.ocx

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.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 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 46.28.109.52.in-addr.arpa udp
US 8.8.8.8:53 ausnz.net udp
US 192.96.209.82:443 ausnz.net tcp
US 8.8.8.8:53 belisip.net udp
US 8.8.8.8:53 82.209.96.192.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 32.169.19.2.in-addr.arpa udp
US 8.8.8.8:53 47.28.109.52.in-addr.arpa udp
ID 158.140.185.205:443 belisip.net tcp
US 8.8.8.8:53 205.185.140.158.in-addr.arpa udp
US 8.8.8.8:53 blog.centerking.top udp
US 8.8.8.8:53 82.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 edu-media.cn udp
CN 123.56.83.149:443 edu-media.cn tcp
US 8.8.8.8:53 12.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 ppiabanyuwangi.or.id udp
SG 194.163.35.114:443 ppiabanyuwangi.or.id tcp
US 8.8.8.8:53 114.35.163.194.in-addr.arpa udp
US 8.8.8.8:53 lydt.cc udp
CN 120.78.143.193:443 lydt.cc tcp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 27.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 acerestoration.co.za udp
ZA 41.203.18.35:443 acerestoration.co.za tcp
US 8.8.8.8:53 r11.o.lencr.org udp
GB 2.23.210.75:80 r11.o.lencr.org tcp
US 8.8.8.8:53 35.18.203.41.in-addr.arpa udp
US 8.8.8.8:53 75.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 73.209.201.84.in-addr.arpa udp

Files

memory/3392-5-0x00007FFACC9F0000-0x00007FFACCA00000-memory.dmp

memory/3392-13-0x00007FFACA700000-0x00007FFACA710000-memory.dmp

memory/3392-15-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-20-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-19-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-21-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-22-0x00007FFACA700000-0x00007FFACA710000-memory.dmp

memory/3392-18-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-17-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-16-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-14-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-12-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-11-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-10-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-9-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-8-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-7-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-6-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-4-0x00007FFACC9F0000-0x00007FFACCA00000-memory.dmp

memory/3392-3-0x00007FFACC9F0000-0x00007FFACCA00000-memory.dmp

memory/3392-2-0x00007FFACC9F0000-0x00007FFACCA00000-memory.dmp

memory/3392-1-0x00007FFB0CA0D000-0x00007FFB0CA0E000-memory.dmp

memory/3392-0-0x00007FFACC9F0000-0x00007FFACCA00000-memory.dmp

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\4C2ECAC2A38B0FA642F6D8FBD8353762

MD5 5bfa51f3a417b98e7443eca90fc94703
SHA1 8c015d80b8a23f780bdd215dc842b0f5551f63bd
SHA256 bebe2853a3485d1c2e5c5be4249183e0ddaff9f87de71652371700a89d937128
SHA512 4cd03686254bb28754cbaa635ae1264723e2be80ce1dd0f78d1ab7aee72232f5b285f79e488e9c5c49ff343015bd07bb8433d6cee08ae3cea8c317303e3ac399

memory/3392-48-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

memory/3392-49-0x00007FFB0CA0D000-0x00007FFB0CA0E000-memory.dmp

memory/3392-50-0x00007FFB0C970000-0x00007FFB0CB65000-memory.dmp

C:\Users\Admin\wnru.ocx

MD5 8f7afabccec4bec42d5bf041dc45f7e5
SHA1 614359b31a2cdf02be8a12b0254f91171c32ba54
SHA256 ff0b128a0d1f6385dc4d265684b760d92be853e938e8e2e1aed3f120a5541933
SHA512 2b2e9b09d61e356cd569e097e2da2191e854590364141ad5f6d99c0a0910caa271100b26efa1457c8bd30cf4e82f54ed6fa6aa4d3fd0c0eccfd202bcc6bc4853