Malware Analysis Report

2025-03-15 06:26

Sample ID 240121-ycjhqsghgj
Target Spoofer by kero.exe
SHA256 18dcdea8ad6ed1da48c7fd85a62e2fe4b5bdf4e447bb28cfe17ea705396d0878
Tags
hacked njrat evasion
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 Overview

score
10/10

SHA256

18dcdea8ad6ed1da48c7fd85a62e2fe4b5bdf4e447bb28cfe17ea705396d0878

Threat Level: Known bad

The file Spoofer by kero.exe was found to be: Known bad.

Malicious Activity Summary

hacked njrat evasion

Njrat family

Modifies Windows Firewall

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Checks processor information in registry

Enumerates system info in registry

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: GetForegroundWindowSpam

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-21 19:38

Signatures

Njrat family

njrat

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-21 19:38

Reported

2024-01-21 19:41

Platform

win11-20231222-en

Max time kernel

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe"

Signatures

Modifies Windows Firewall

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

Legitimate hosting services abused for malware hosting/C2

Checks processor information in registry

Description Indicator Process Target
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
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 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 behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2908 wrote to memory of 1544 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe C:\Windows\SysWOW64\netsh.exe
PID 2908 wrote to memory of 1544 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe C:\Windows\SysWOW64\netsh.exe
PID 2908 wrote to memory of 1544 N/A C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe

"C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Spoofer by kero.exe" "Spoofer by kero.exe" ENABLE

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\Desktop\SkipSync.xla"

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 204.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 18.198.77.177:17216 4.tcp.eu.ngrok.io tcp
DE 3.127.59.75:17216 4.tcp.eu.ngrok.io tcp
DE 3.127.59.75:17216 4.tcp.eu.ngrok.io tcp
DE 3.127.59.75:17216 4.tcp.eu.ngrok.io tcp
DE 3.127.59.75:17216 4.tcp.eu.ngrok.io tcp
DE 3.127.59.75:17216 4.tcp.eu.ngrok.io tcp
DE 3.127.59.75:17216 4.tcp.eu.ngrok.io tcp
DE 3.127.59.75:17216 4.tcp.eu.ngrok.io tcp
DE 3.127.59.75:17216 4.tcp.eu.ngrok.io tcp
DE 3.127.59.75:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 52.28.112.211:17216 4.tcp.eu.ngrok.io tcp
DE 3.121.139.82:17216 4.tcp.eu.ngrok.io tcp
DE 3.121.139.82:17216 4.tcp.eu.ngrok.io tcp
DE 3.121.139.82:17216 4.tcp.eu.ngrok.io tcp
DE 3.121.139.82:17216 4.tcp.eu.ngrok.io tcp
DE 3.121.139.82:17216 4.tcp.eu.ngrok.io tcp
DE 3.121.139.82:17216 4.tcp.eu.ngrok.io tcp
DE 3.121.139.82:17216 4.tcp.eu.ngrok.io tcp
DE 3.121.139.82:17216 4.tcp.eu.ngrok.io tcp

Files

memory/2908-0-0x00000000748D0000-0x0000000074E81000-memory.dmp

memory/2908-1-0x00000000014A0000-0x00000000014B0000-memory.dmp

memory/2908-2-0x00000000748D0000-0x0000000074E81000-memory.dmp

memory/2908-4-0x00000000748D0000-0x0000000074E81000-memory.dmp

memory/2908-5-0x00000000748D0000-0x0000000074E81000-memory.dmp

memory/232-7-0x00007FF97C130000-0x00007FF97C140000-memory.dmp

memory/232-6-0x00007FF97C130000-0x00007FF97C140000-memory.dmp

memory/232-9-0x00007FF97C130000-0x00007FF97C140000-memory.dmp

memory/232-10-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-8-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-13-0x00007FF97C130000-0x00007FF97C140000-memory.dmp

memory/232-14-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-12-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-11-0x00007FF97C130000-0x00007FF97C140000-memory.dmp

memory/232-15-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-16-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-19-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-18-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-17-0x00007FF979E70000-0x00007FF979E80000-memory.dmp

memory/232-20-0x00007FF979E70000-0x00007FF979E80000-memory.dmp

memory/232-21-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-22-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-23-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-24-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-25-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-26-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-27-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-28-0x00007FF9BA5C0000-0x00007FF9BA67D000-memory.dmp

memory/232-29-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp

memory/232-34-0x00007FF9BC0A0000-0x00007FF9BC2A9000-memory.dmp