Malware Analysis Report

2025-03-15 07:22

Sample ID 241111-zfj44syqdq
Target 7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03
SHA256 7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03
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

7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03

Threat Level: Known bad

The file 7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03 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 behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Enumerates system info in registry

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 20:39

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 20:39

Reported

2024-11-11 20:42

Platform

win7-20241010-en

Max time kernel

117s

Max time network

122s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03.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\7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03.xlsm

C:\Windows\SysWow64\regsvr32.exe

C:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 beetle-j.jp udp
JP 219.100.169.159:80 beetle-j.jp tcp
US 8.8.8.8:53 brutobrasil.com.br udp
US 209.126.103.109:443 brutobrasil.com.br tcp
US 209.126.103.109:443 brutobrasil.com.br tcp
US 209.126.103.109:443 brutobrasil.com.br tcp
US 209.126.103.109:443 brutobrasil.com.br tcp
US 8.8.8.8:53 e3technology.in udp
US 3.33.130.190:80 e3technology.in tcp

Files

memory/2124-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2124-1-0x000000007254D000-0x0000000072558000-memory.dmp

C:\Users\Admin\rfs.dll

MD5 e89f75f918dbdcee28604d4e09dd71d7
SHA1 f9d9055e9878723a12063b47d4a1a5f58c3eb1e9
SHA256 6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023
SHA512 8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0

memory/2124-7-0x000000007254D000-0x0000000072558000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 20:39

Reported

2024-11-11 20:42

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03.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\7205161480f69a5b2fb891cf8af929cc2acc1b22828f3bb79c352abe2f79be03.xlsm"

C:\Windows\SysWow64\regsvr32.exe

C:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 97.32.109.52.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 beetle-j.jp udp
JP 219.100.169.159:80 beetle-j.jp 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 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 brutobrasil.com.br udp
US 209.126.103.109:443 brutobrasil.com.br tcp
US 8.8.8.8:53 159.169.100.219.in-addr.arpa udp
US 8.8.8.8:53 109.103.126.209.in-addr.arpa udp
US 8.8.8.8:53 23.149.64.172.in-addr.arpa udp
US 8.8.8.8:53 233.38.18.104.in-addr.arpa udp
US 8.8.8.8:53 www.brutobrasil.com.br udp
US 209.126.103.109:443 www.brutobrasil.com.br tcp
US 8.8.8.8:53 e3technology.in udp
US 15.197.148.33:80 e3technology.in tcp
US 8.8.8.8:53 33.148.197.15.in-addr.arpa udp
US 8.8.8.8:53 17.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 139.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 73.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/960-0-0x00007FFB60F0D000-0x00007FFB60F0E000-memory.dmp

memory/960-1-0x00007FFB20EF0000-0x00007FFB20F00000-memory.dmp

memory/960-3-0x00007FFB20EF0000-0x00007FFB20F00000-memory.dmp

memory/960-2-0x00007FFB20EF0000-0x00007FFB20F00000-memory.dmp

memory/960-4-0x00007FFB20EF0000-0x00007FFB20F00000-memory.dmp

memory/960-5-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

memory/960-8-0x00007FFB20EF0000-0x00007FFB20F00000-memory.dmp

memory/960-7-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

memory/960-10-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

memory/960-12-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

memory/960-13-0x00007FFB1ED00000-0x00007FFB1ED10000-memory.dmp

memory/960-11-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

memory/960-9-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

memory/960-14-0x00007FFB1ED00000-0x00007FFB1ED10000-memory.dmp

memory/960-16-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

memory/960-15-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

memory/960-17-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

memory/960-6-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

C:\Users\Admin\rfs.dll

MD5 e89f75f918dbdcee28604d4e09dd71d7
SHA1 f9d9055e9878723a12063b47d4a1a5f58c3eb1e9
SHA256 6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023
SHA512 8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0

memory/960-38-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

memory/960-39-0x00007FFB60F0D000-0x00007FFB60F0E000-memory.dmp

memory/960-40-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

memory/960-41-0x00007FFB60E70000-0x00007FFB61065000-memory.dmp

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

MD5 2d368d57bafb2843fe4226354da020b0
SHA1 2bedb27a0b80d0d8310eab5b9109d9aefac4b1f9
SHA256 e4d5c4966338e41fd2776234d9cf530439911da7d71d399b3abee769af9352de
SHA512 eeaa58577d20c020d41ef7f19d6fb0c4406bc881cbdade7aa989dd30a18cff93e96faed0df08b5eacd0db83e3dd8d4705f566830ac6c5a9e27f3291fd1ef2c8b