Malware Analysis Report

2025-03-15 06:46

Sample ID 250115-y2ntratmas
Target ezz.exe
SHA256 2c37e02bdc9b3e4cceb432473d5a547fc0ed31d5d35ee141fb9247eed45458e0
Tags
orcus discovery rat spyware stealer
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

2c37e02bdc9b3e4cceb432473d5a547fc0ed31d5d35ee141fb9247eed45458e0

Threat Level: Known bad

The file ezz.exe was found to be: Known bad.

Malicious Activity Summary

orcus discovery rat spyware stealer

Orcus

Orcus family

Checks computer location settings

Executes dropped EXE

Legitimate hosting services abused for malware hosting/C2

Drops desktop.ini file(s)

Drops file in System32 directory

Drops file in Windows directory

Enumerates physical storage devices

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-15 20:17

Signatures

Orcus family

orcus

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-15 20:17

Reported

2025-01-15 20:19

Platform

win10ltsc2021-20250113-en

Max time kernel

101s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ezz.exe"

Signatures

Orcus

rat spyware stealer orcus

Orcus family

orcus

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3982764349-3037452555-3708423086-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\ezz.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsInput.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\ezz.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\ezz.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A 0.tcp.ngrok.io N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\WindowsInput.exe C:\Users\Admin\AppData\Local\Temp\ezz.exe N/A
File opened for modification C:\Windows\SysWOW64\WindowsInput.InstallLog C:\Windows\SysWOW64\WindowsInput.exe N/A
File created C:\Windows\SysWOW64\WindowsInput.InstallState C:\Windows\SysWOW64\WindowsInput.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\assembly C:\Users\Admin\AppData\Local\Temp\ezz.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\ezz.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\ezz.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\ezz.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ezz.exe

"C:\Users\Admin\AppData\Local\Temp\ezz.exe"

C:\Windows\SysWOW64\WindowsInput.exe

"C:\Windows\SysWOW64\WindowsInput.exe" --install

C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 167.173.78.104.in-addr.arpa udp
US 8.8.8.8:53 0.tcp.ngrok.io udp
US 3.12.57.198:19843 0.tcp.ngrok.io tcp
US 8.8.8.8:53 198.57.12.3.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 fd.api.iris.microsoft.com udp
IE 20.223.36.55:443 fd.api.iris.microsoft.com tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 86.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 29.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/3448-0-0x0000000074812000-0x0000000074813000-memory.dmp

memory/3448-1-0x0000000074810000-0x0000000074DC1000-memory.dmp

memory/3448-2-0x0000000074810000-0x0000000074DC1000-memory.dmp

C:\Windows\SysWOW64\WindowsInput.exe

MD5 e854a4636afc652b320e12e50ba4080e
SHA1 8a4ac6ecc22ee5f3a8ec846d38b41ff18c641fdc
SHA256 94b9c78c6fa2bf61fba20a08ad4563f7dd2f5668c28eff227965ce0a2032d5d5
SHA512 30aabd5079b6ed0948eb70fd18e9166096e4ba5d1d47fc35b7270f931d19bbe6cd929b6010f70297bf5272dc5a79e2523721354d211c4080d68ad8d17e316118

memory/3744-19-0x00007FFF26D35000-0x00007FFF26D36000-memory.dmp

memory/3744-20-0x0000000000B40000-0x0000000000B58000-memory.dmp

memory/3744-21-0x0000000000B80000-0x0000000000BA0000-memory.dmp

memory/3744-22-0x00007FFF26A80000-0x00007FFF27421000-memory.dmp

memory/3744-23-0x00007FFF26A80000-0x00007FFF27421000-memory.dmp

memory/3744-26-0x000000001B580000-0x000000001B5A4000-memory.dmp

memory/3744-34-0x000000001BEE0000-0x000000001C3AE000-memory.dmp

memory/3744-35-0x000000001C450000-0x000000001C4EC000-memory.dmp

C:\Windows\SysWOW64\WindowsInput.InstallLog

MD5 c2291863df7c2d3038ce3c22fa276506
SHA1 7b7d2bc07a6c35523807342c747c9b6a19f3184e
SHA256 14504199bede3f46129969dbd2b7680f2e5b7fcd73a3e427ce1bb6217a6d13da
SHA512 00bf40174a67e3e663d18a887c5b461a1e5ead0b27f0a139d87969158c58f4ca72cfa5a731dda239356192ca4cb5ac6ae2b0e37401d534e686cabacd3cbee8fa

memory/3744-52-0x00007FFF26A80000-0x00007FFF27421000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

MD5 26dbe3f6d0e41f748f3e9f98d428ae5b
SHA1 6e4217522845257c5b3c6760428b80fa236213b1
SHA256 2c37e02bdc9b3e4cceb432473d5a547fc0ed31d5d35ee141fb9247eed45458e0
SHA512 83bc701441fc46f887e071561c5b4ec6b249fe0b0b12d3ed53de3362fd86054327bf64435280c7cb5f1c6cb124a557f249868b7142d44c017f34b84be5b9e879

memory/3780-57-0x0000000074810000-0x0000000074DC1000-memory.dmp

memory/3780-58-0x0000000074810000-0x0000000074DC1000-memory.dmp

memory/3448-56-0x0000000074810000-0x0000000074DC1000-memory.dmp

memory/3780-55-0x0000000074812000-0x0000000074813000-memory.dmp

memory/3780-59-0x0000000074810000-0x0000000074DC1000-memory.dmp

memory/3780-61-0x0000000074810000-0x0000000074DC1000-memory.dmp