Malware Analysis Report

2025-03-15 06:51

Sample ID 240101-yfzdcsgdgp
Target 26a4b648d7469d84b65452fcc161a7909878df2685910d80085dbb9a69c2cd27.zip
SHA256 26a4b648d7469d84b65452fcc161a7909878df2685910d80085dbb9a69c2cd27
Tags
orcus evasion persistence rat spyware stealer trojan
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

26a4b648d7469d84b65452fcc161a7909878df2685910d80085dbb9a69c2cd27

Threat Level: Known bad

The file 26a4b648d7469d84b65452fcc161a7909878df2685910d80085dbb9a69c2cd27.zip was found to be: Known bad.

Malicious Activity Summary

orcus evasion persistence rat spyware stealer trojan

Orcus main payload

Modifies Windows Defender Real-time Protection settings

UAC bypass

Contains code to disable Windows Defender

Orcurs Rat Executable

Orcus family

Orcus

Orcurs Rat Executable

Loads dropped DLL

Windows security modification

Executes dropped EXE

Legitimate hosting services abused for malware hosting/C2

Adds Run key to start application

Checks whether UAC is enabled

Drops file in System32 directory

Drops file in Program Files directory

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

System policy modification

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-01 19:44

Signatures

Orcurs Rat Executable

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

Orcus family

orcus

Orcus main payload

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-01 19:44

Reported

2024-01-01 19:47

Platform

win7-20231215-en

Max time kernel

173s

Max time network

187s

Command Line

"C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe"

Signatures

Contains code to disable Windows Defender

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

Modifies Windows Defender Real-time Protection settings

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A

Orcus

rat spyware stealer orcus

Orcus main payload

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

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "1" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "1" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A

Orcurs Rat Executable

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

Windows security modification

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Run\svUpdate = "\"C:\\Program Files (x86)\\Win32\\UpdateSystem32.exe\"" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "1" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "1" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A

Legitimate hosting services abused for malware hosting/C2

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\WindowsInput.exe C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
File created C:\Windows\SysWOW64\WindowsInput.exe.config C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
File created C:\Windows\SysWOW64\WindowsInput.InstallState C:\Windows\SysWOW64\WindowsInput.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Win32\UpdateSystem32.exe C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
File opened for modification C:\Program Files (x86)\Win32\UpdateSystem32.exe C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
File created C:\Program Files (x86)\Win32\UpdateSystem32.exe.config C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1988 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Windows\SysWOW64\WindowsInput.exe
PID 1988 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Windows\SysWOW64\WindowsInput.exe
PID 1988 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Windows\SysWOW64\WindowsInput.exe
PID 1988 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Windows\SysWOW64\WindowsInput.exe
PID 1988 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1988 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1988 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1988 wrote to memory of 2528 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1988 wrote to memory of 1272 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 1988 wrote to memory of 1272 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 1988 wrote to memory of 1272 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 1988 wrote to memory of 1272 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 1988 wrote to memory of 1272 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 1988 wrote to memory of 1272 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 1988 wrote to memory of 1272 N/A C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 2692 wrote to memory of 2428 N/A C:\Windows\system32\taskeng.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 2692 wrote to memory of 2428 N/A C:\Windows\system32\taskeng.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 2692 wrote to memory of 2428 N/A C:\Windows\system32\taskeng.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 2692 wrote to memory of 2428 N/A C:\Windows\system32\taskeng.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 2692 wrote to memory of 2428 N/A C:\Windows\system32\taskeng.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 2692 wrote to memory of 2428 N/A C:\Windows\system32\taskeng.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 2692 wrote to memory of 2428 N/A C:\Windows\system32\taskeng.exe C:\Program Files (x86)\Win32\UpdateSystem32.exe
PID 1272 wrote to memory of 1868 N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1272 wrote to memory of 1868 N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1272 wrote to memory of 1868 N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1272 wrote to memory of 1868 N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1272 wrote to memory of 1996 N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe C:\Users\Admin\AppData\Roaming\Windows Defender.exe
PID 1272 wrote to memory of 1996 N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe C:\Users\Admin\AppData\Roaming\Windows Defender.exe
PID 1272 wrote to memory of 1996 N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe C:\Users\Admin\AppData\Roaming\Windows Defender.exe
PID 1272 wrote to memory of 1996 N/A C:\Program Files (x86)\Win32\UpdateSystem32.exe C:\Users\Admin\AppData\Roaming\Windows Defender.exe
PID 1996 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe C:\Users\Admin\AppData\Roaming\Windows Defender.exe
PID 1996 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe C:\Users\Admin\AppData\Roaming\Windows Defender.exe
PID 1996 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe C:\Users\Admin\AppData\Roaming\Windows Defender.exe
PID 1996 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Roaming\Windows Defender.exe C:\Users\Admin\AppData\Roaming\Windows Defender.exe

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "1" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableVirtualization = "0" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableSecureUIAPaths = "0" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableUIADesktopToggle = "0" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\FilterAdministratorToken = "0" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableUIADesktopToggle = "0" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "1" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableVirtualization = "0" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\FilterAdministratorToken = "0" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableInstallerDetection = "0" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableSecureUIAPaths = "0" C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableInstallerDetection = "0" C:\Program Files (x86)\Win32\UpdateSystem32.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe

"C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe"

C:\Windows\SysWOW64\WindowsInput.exe

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

C:\Windows\SysWOW64\WindowsInput.exe

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

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell" Get-MpPreference -verbose

C:\Program Files (x86)\Win32\UpdateSystem32.exe

"C:\Program Files (x86)\Win32\UpdateSystem32.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {1874247F-E6C8-4400-AECB-B27F8A46057A} S-1-5-21-3308111660-3636268597-2291490419-1000:JUBFGPHD\Admin:Interactive:[1]

C:\Program Files (x86)\Win32\UpdateSystem32.exe

"C:\Program Files (x86)\Win32\UpdateSystem32.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell" Get-MpPreference -verbose

C:\Users\Admin\AppData\Roaming\Windows Defender.exe

"C:\Users\Admin\AppData\Roaming\Windows Defender.exe" /launchSelfAndExit "C:\Program Files (x86)\Win32\UpdateSystem32.exe" 1272 /protectFile

C:\Users\Admin\AppData\Roaming\Windows Defender.exe

"C:\Users\Admin\AppData\Roaming\Windows Defender.exe" /watchProcess "C:\Program Files (x86)\Win32\UpdateSystem32.exe" 1272 "/protectFile"

Network

Country Destination Domain Proto
US 8.8.8.8:53 5.tcp.eu.ngrok.io udp
DE 18.158.58.205:11720 5.tcp.eu.ngrok.io tcp
DE 18.158.58.205:11720 5.tcp.eu.ngrok.io tcp
DE 18.158.58.205:11720 5.tcp.eu.ngrok.io tcp
DE 18.158.58.205:11720 5.tcp.eu.ngrok.io tcp
DE 18.158.58.205:11720 5.tcp.eu.ngrok.io tcp
DE 18.158.58.205:11720 5.tcp.eu.ngrok.io tcp
US 8.8.8.8:53 5.tcp.eu.ngrok.io udp
DE 3.67.62.142:11720 5.tcp.eu.ngrok.io tcp

Files

memory/1988-0-0x0000000000AB0000-0x0000000000BA0000-memory.dmp

memory/1988-1-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/1988-2-0x0000000004920000-0x0000000004960000-memory.dmp

memory/1988-3-0x00000000003B0000-0x00000000003BE000-memory.dmp

memory/1988-4-0x0000000002150000-0x00000000021AC000-memory.dmp

memory/1988-5-0x00000000005F0000-0x0000000000602000-memory.dmp

memory/1988-6-0x0000000000650000-0x0000000000658000-memory.dmp

memory/1988-7-0x0000000000660000-0x000000000066A000-memory.dmp

memory/1988-8-0x0000000000670000-0x0000000000678000-memory.dmp

memory/1988-9-0x0000000000680000-0x0000000000688000-memory.dmp

memory/1988-10-0x0000000000A30000-0x0000000000A38000-memory.dmp

C:\Windows\SysWOW64\WindowsInput.exe

MD5 e6fcf516d8ed8d0d4427f86e08d0d435
SHA1 c7691731583ab7890086635cb7f3e4c22ca5e409
SHA256 8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337
SHA512 c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

C:\Windows\SysWOW64\WindowsInput.exe.config

MD5 a2b76cea3a59fa9af5ea21ff68139c98
SHA1 35d76475e6a54c168f536e30206578babff58274
SHA256 f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512 b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

memory/2676-20-0x0000000000310000-0x000000000031C000-memory.dmp

memory/2676-21-0x000007FEF4E60000-0x000007FEF584C000-memory.dmp

memory/2676-22-0x000000001B310000-0x000000001B390000-memory.dmp

memory/1988-23-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/1988-24-0x0000000004920000-0x0000000004960000-memory.dmp

memory/2676-26-0x000007FEF4E60000-0x000007FEF584C000-memory.dmp

memory/2588-27-0x000007FEF4E60000-0x000007FEF584C000-memory.dmp

memory/2676-28-0x000000001B310000-0x000000001B390000-memory.dmp

memory/2588-29-0x0000000019B90000-0x0000000019C10000-memory.dmp

memory/2588-34-0x000007FEF4E60000-0x000007FEF584C000-memory.dmp

memory/2676-37-0x000007FEF4E60000-0x000007FEF584C000-memory.dmp

memory/2528-40-0x000000006D180000-0x000000006D72B000-memory.dmp

memory/2528-41-0x00000000025E0000-0x0000000002620000-memory.dmp

memory/2528-42-0x000000006D180000-0x000000006D72B000-memory.dmp

memory/2528-43-0x00000000025E0000-0x0000000002620000-memory.dmp

memory/2528-44-0x000000006D180000-0x000000006D72B000-memory.dmp

C:\Program Files (x86)\Win32\UpdateSystem32.exe

MD5 0ae9037ccf0ec15a0f1c15a53ee2a2c5
SHA1 2a682b2357329d786e1b0f0f2f8c30aa9f984444
SHA256 936d8514d749535de5ecc732662bd282b5a0efd38667996f585b34f9b1a8d558
SHA512 ceaeea58565bb8151ce39b43e4f1c74a8f0bbfa84b62b9211d8713b7291212dc475b627918b0eb1f294a776da767f5e35071a014a3a3e8c6d1a78a5f112db29d

memory/1272-53-0x00000000012E0000-0x00000000013D0000-memory.dmp

memory/1272-55-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/1272-56-0x0000000004B10000-0x0000000004B50000-memory.dmp

memory/1988-54-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/1272-57-0x0000000000880000-0x0000000000892000-memory.dmp

C:\Users\Admin\AppData\Roaming\Orcus\err_5f51b4303bf4453eb591ad936578c144.dat

MD5 1fadba38d583f42566ed6477da0a0480
SHA1 e39c3d014a3b5ae07d36a6e6a41f4f484688dc84
SHA256 904fea26bb0a084f05b7ee19e2645633d89122651109a4ac02bdaad668b7cfd7
SHA512 266c8dc485dc7269f5cba05d53409b974f88cd321e76905d980396d2d2584d42dd6742f29184690feb27effcb15bc30ba26811fcc8bddb7ec08f2fe11159d3b9

memory/1272-60-0x0000000000E00000-0x0000000000E4E000-memory.dmp

memory/1272-61-0x00000000048D0000-0x00000000048E8000-memory.dmp

memory/1272-62-0x0000000004AE0000-0x0000000004AF0000-memory.dmp

memory/1272-64-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/2428-65-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/1272-66-0x0000000004B10000-0x0000000004B50000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

MD5 2e8781ee62cfe05ab2f56874eb8dcdcc
SHA1 54a0f43ca537c7e162f00375b7070da65a22f1c3
SHA256 8f6de0dc91db002517831ce7c45080806016a31985549b3e52bc1f4c6698d37d
SHA512 e96a22113dc47b9c644bc925a9378c29c66ea229b48eec8a82af91cc97f7969c89c996819936b50844cb4c767b3368a4db72d751616fac1f6f1ef12f5296dbec

memory/1868-73-0x00000000024E0000-0x0000000002520000-memory.dmp

memory/1868-72-0x000000006BE50000-0x000000006C3FB000-memory.dmp

memory/1868-74-0x000000006BE50000-0x000000006C3FB000-memory.dmp

memory/1868-75-0x000000006BE50000-0x000000006C3FB000-memory.dmp

\Users\Admin\AppData\Roaming\Windows Defender.exe

MD5 913967b216326e36a08010fb70f9dba3
SHA1 7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf
SHA256 8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a
SHA512 c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

memory/1996-87-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/3068-89-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/1996-86-0x00000000010A0000-0x00000000010A8000-memory.dmp

memory/2428-90-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/1996-91-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/3068-92-0x0000000073EC0000-0x00000000745AE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-01 19:44

Reported

2024-01-01 19:47

Platform

win10v2004-20231215-en

Max time kernel

162s

Max time network

171s

Command Line

"C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe"

Signatures

Contains code to disable Windows Defender

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

Orcus

rat spyware stealer orcus

Orcurs Rat Executable

Description Indicator Process Target
N/A N/A 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\CortexClient\CortexClient Privat.exe N/A
File created C:\Windows\SysWOW64\WindowsInput.exe.config C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe

"C:\Users\Admin\AppData\Local\Temp\CortexClient\CortexClient Privat.exe"

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 2.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 48.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 195.233.44.23.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 23.160.77.104.in-addr.arpa udp
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp
US 8.8.8.8:53 49.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 29.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 137.71.105.51.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net 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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp

Files

memory/1040-0-0x0000000074990000-0x0000000075140000-memory.dmp

memory/1040-1-0x00000000001C0000-0x00000000002B0000-memory.dmp

memory/1040-2-0x0000000074990000-0x0000000075140000-memory.dmp

memory/1040-3-0x0000000004BD0000-0x0000000004BE0000-memory.dmp

memory/1040-4-0x0000000004BC0000-0x0000000004BCE000-memory.dmp

memory/1040-5-0x0000000004C60000-0x0000000004CBC000-memory.dmp

memory/1040-6-0x00000000054B0000-0x0000000005A54000-memory.dmp

memory/1040-7-0x0000000005000000-0x0000000005092000-memory.dmp

memory/1040-8-0x0000000004BD0000-0x0000000004BE0000-memory.dmp

memory/1040-9-0x00000000003A0000-0x00000000003B2000-memory.dmp

memory/1040-10-0x0000000004F70000-0x0000000004F78000-memory.dmp

memory/1040-11-0x0000000004F80000-0x0000000004F8A000-memory.dmp

memory/1040-12-0x0000000004F90000-0x0000000004F98000-memory.dmp

memory/1040-13-0x0000000004FA0000-0x0000000004FA8000-memory.dmp

memory/1040-14-0x0000000004FB0000-0x0000000004FB8000-memory.dmp

memory/1040-15-0x0000000005110000-0x0000000005176000-memory.dmp

memory/1040-16-0x0000000006080000-0x0000000006698000-memory.dmp

memory/1040-17-0x0000000000C90000-0x0000000000CA2000-memory.dmp

memory/1040-18-0x00000000050A0000-0x00000000050DC000-memory.dmp

memory/1040-19-0x0000000000CB0000-0x0000000000CFC000-memory.dmp

memory/1040-20-0x0000000005290000-0x000000000539A000-memory.dmp

memory/1040-22-0x0000000005E50000-0x0000000005E72000-memory.dmp