Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    136s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/11/2026, 11:33

General

  • Target
    Bat To 0Exe.exe
  • Size 1005KB
  • Sample261113-nn71csty9n
  • SHA256 94509784f4e6bbe7ddcb00d09f2325cf9baec1cc80e14b5114987798aca3f191
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • umbral

Version
  • v1.3

C2
  • https://discord.com/api/webhooks/1570758573208768582/nGddHNMHIBlNIPILY45Ks6FoJQgV7Buy9G0Iyz9_TQpIJCuNut4Ev7R2HtXywOClM6LX

Signatures

  • Family: Umbral

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

  • Detects Umbral payload 4 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.

  • 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.

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Looks up external IP address via web service 1 TTPs 1 IoCs

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

  • Queries system WMI classes for hardware identifiers 2 TTPs 1 IoCs

    Uses WMI to read hardware serial numbers or the system UUID, commonly used to fingerprint the victim machine.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 10 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Suspicious behavior: EnumeratesProcesses 31 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Bat To 0Exe.exe
    "C:\Users\Admin\AppData\Local\Temp\Bat To 0Exe.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4732
    • C:\Users\Admin\AppData\Local\Temp\Umbral.exe
      "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
      2⤵
      • Executes dropped EXE
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2760
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Umbral.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1604
      • C:\Windows\System32\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
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Disables one or more Microsoft Defender components
        • Disables automatic submission of suspicious files to Microsoft by Windows Defender
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5272
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:6000
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3800
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Reads the TCP/IP host and domain name from the registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2228
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
        • Reads the TCP/IP host and domain name from the registry
        • Suspicious behavior: EnumeratesProcesses
        PID:5964
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Queries system WMI classes for hardware identifiers
        • Reads the TCP/IP host and domain name from the registry
        • Suspicious behavior: EnumeratesProcesses
        PID:2340
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        PID:4496
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic" path win32_VideoController get name
        3⤵
        • Reads the TCP/IP host and domain name from the registry
        • Detects videocard installed
        • Suspicious behavior: EnumeratesProcesses
        PID:4584
    • C:\Users\Admin\AppData\Local\Temp\Bat to Exe.exe
      "C:\Users\Admin\AppData\Local\Temp\Bat to Exe.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5836

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 070e2dc002fee5d6c6ae0611713bb24a9f01d741d964e7f1ece4f61789724a94
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 952B
        • SHA256 c649ac7b9ec6d6f76b9d9569f4ec855674ca31bef16181e13d1ad1461213c663
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 b11ec5eeecac681bbcbb325a58485259a1f3e62f99d14d73847ea54a1a1655dd
        • MD5 SHA1 SHA512 TLSH

        Bat to Exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\Bat to Exe.exe
        • Size 752KB
        • SHA256 f6f47c8fa80177328644c46370d39e1efdc49a6a9df2fa7afb4c4a72064e1459
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Umbral.exe

        • Path C:\Users\Admin\AppData\Local\Temp\Umbral.exe
        • Size 229KB
        • SHA256 c9d64fea7aa018c20b752e22269c08102aaa8db3b4e5e73ff4e86f19dea7c507
        • MD5 SHA1 SHA512 SSDEEP TLSH

        __PSScriptPolicyTest_plz3mdan.nr1.psm1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_plz3mdan.nr1.psm1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        memory/1604-54-0x00000193ED010000-0x00000193ED01A000-memory.dmp

        memory/1604-47-0x00000193ECE60000-0x00000193ECE82000-memory.dmp

        memory/1604-53-0x00000193ED250000-0x00000193ED302000-memory.dmp

        memory/1604-52-0x00000193ED230000-0x00000193ED24E000-memory.dmp

        memory/2760-78-0x0000029025930000-0x000002902593A000-memory.dmp

        memory/2760-39-0x00007FFF83040000-0x00007FFF83041000-memory.dmp

        memory/2760-79-0x0000029027280000-0x0000029027292000-memory.dmp

        memory/2760-60-0x000002903FD00000-0x000002903FD76000-memory.dmp

        memory/2760-62-0x00000290258F0000-0x000002902590E000-memory.dmp

        memory/2760-27-0x0000029025370000-0x00000290253B0000-memory.dmp

        memory/2760-87-0x00007FFF82EB0000-0x00007FFF83854000-memory.dmp

        memory/2760-61-0x0000029025950000-0x00000290259A0000-memory.dmp

        memory/2760-46-0x00007FFF8303F000-0x00007FFF83040000-memory.dmp

        memory/2760-43-0x00007FFF82EB0000-0x00007FFF83854000-memory.dmp

        memory/2760-42-0x00007FFF82EB0000-0x00007FFF83854000-memory.dmp

        memory/2760-41-0x00007FFF82EB0000-0x00007FFF83854000-memory.dmp

        memory/2760-40-0x00007FFF82EB0000-0x00007FFF83854000-memory.dmp

        memory/4732-11-0x00007FFF86830000-0x00007FFF87268000-memory.dmp

        memory/4732-8-0x00007FFF86830000-0x00007FFF87268000-memory.dmp

        memory/4732-1-0x000000001B740000-0x000000001B7E6000-memory.dmp

        memory/4732-2-0x00007FFF86830000-0x00007FFF87268000-memory.dmp

        memory/4732-3-0x000000001BD00000-0x000000001C1CE000-memory.dmp

        memory/4732-4-0x000000001C300000-0x000000001C39C000-memory.dmp

        memory/4732-5-0x000000001B7F0000-0x000000001B7F8000-memory.dmp

        memory/4732-32-0x00007FFF86830000-0x00007FFF87268000-memory.dmp

        memory/4732-45-0x0000000001140000-0x0000000001150000-memory.dmp

        memory/4732-6-0x000000001C460000-0x000000001C4AC000-memory.dmp

        memory/4732-31-0x00007FFF86830000-0x00007FFF87268000-memory.dmp

        memory/4732-13-0x00007FFF86830000-0x00007FFF87268000-memory.dmp

        memory/4732-12-0x00007FFF86830000-0x00007FFF87268000-memory.dmp

        memory/4732-0-0x00007FFF86B2A000-0x00007FFF86B2B000-memory.dmp

        memory/4732-10-0x00007FFF86830000-0x00007FFF87268000-memory.dmp

        memory/4732-9-0x00007FFF86830000-0x00007FFF87268000-memory.dmp

        memory/4732-7-0x00007FFF86830000-0x00007FFF87268000-memory.dmp

        memory/5836-38-0x00000000056C0000-0x0000000005716000-memory.dmp

        memory/5836-44-0x00000000744E2000-0x00000000744E3000-memory.dmp

        memory/5836-34-0x0000000005480000-0x000000000551C000-memory.dmp

        memory/5836-35-0x0000000005AE0000-0x000000000609A000-memory.dmp

        memory/5836-36-0x00000000055C0000-0x0000000005652000-memory.dmp

        memory/5836-33-0x0000000000A20000-0x0000000000AE2000-memory.dmp

        memory/5836-37-0x0000000005570000-0x000000000557A000-memory.dmp