Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/07/2024, 02:49

General

  • Target
    Updatemmmm.exe
  • Size 2.6MB
  • Sample240709-dbgmjavdre
  • SHA256 b1a351ee61443b8558934dca6b2fa9efb0a6d2d18bae61ace5a761596604dbfa
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 9 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

  • Creates new service(s) 2 TTPs
  • Stops running service(s) 4 TTPs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 14 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Drops file in System32 directory 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Launches sc.exe 14 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Modifies data under HKEY_USERS 50 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Updatemmmm.exe
    "C:\Users\Admin\AppData\Local\Temp\Updatemmmm.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2200
    • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
      C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramData) -ExclusionExtension '.exe' -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4200
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c wusa /uninstall /kb:890830 /quiet /norestart
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4888
      • C:\Windows\system32\wusa.exe
        wusa /uninstall /kb:890830 /quiet /norestart
        3⤵
          PID:936
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop UsoSvc
        2⤵
        • Launches sc.exe
        PID:2164
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop WaaSMedicSvc
        2⤵
        • Launches sc.exe
        PID:3532
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop wuauserv
        2⤵
        • Launches sc.exe
        PID:3416
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop bits
        2⤵
        • Launches sc.exe
        PID:3308
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop dosvc
        2⤵
        • Launches sc.exe
        PID:1756
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe delete "WindowsUpdate"
        2⤵
        • Launches sc.exe
        PID:1972
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe create "WindowsUpdate" binpath= "C:\ProgramData\Windows11\Updater.exe" start= "auto"
        2⤵
        • Launches sc.exe
        PID:4740
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop eventlog
        2⤵
        • Launches sc.exe
        PID:4804
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe start "WindowsUpdate"
        2⤵
        • Launches sc.exe
        PID:4100
    • C:\ProgramData\Windows11\Updater.exe
      C:\ProgramData\Windows11\Updater.exe
      1⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:224
      • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
        C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramData) -ExclusionExtension '.exe' -Force
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1588
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c wusa /uninstall /kb:890830 /quiet /norestart
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4088
        • C:\Windows\system32\wusa.exe
          wusa /uninstall /kb:890830 /quiet /norestart
          3⤵
            PID:4528
        • C:\Windows\system32\sc.exe
          C:\Windows\system32\sc.exe stop UsoSvc
          2⤵
          • Launches sc.exe
          PID:2128
        • C:\Windows\system32\sc.exe
          C:\Windows\system32\sc.exe stop WaaSMedicSvc
          2⤵
          • Launches sc.exe
          PID:3992
        • C:\Windows\system32\sc.exe
          C:\Windows\system32\sc.exe stop wuauserv
          2⤵
          • Launches sc.exe
          PID:672
        • C:\Windows\system32\sc.exe
          C:\Windows\system32\sc.exe stop bits
          2⤵
          • Launches sc.exe
          PID:2764
        • C:\Windows\system32\sc.exe
          C:\Windows\system32\sc.exe stop dosvc
          2⤵
          • Launches sc.exe
          PID:3228
        • C:\Windows\system32\conhost.exe
          C:\Windows\system32\conhost.exe
          2⤵
            PID:860
          • C:\Windows\system32\svchost.exe
            svchost.exe
            2⤵
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3320

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              Updater.exe

              • Path C:\ProgramData\Windows11\Updater.exe
              • Size 2.6MB
              • SHA256 b1a351ee61443b8558934dca6b2fa9efb0a6d2d18bae61ace5a761596604dbfa
              • MD5 SHA1 SHA512 SSDEEP

              __PSScriptPolicyTest_t5fcl0un.vss.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_t5fcl0un.vss.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512

              memory/860-50-0x0000000140000000-0x000000014000E000-memory.dmp

              memory/860-49-0x0000000140000000-0x000000014000E000-memory.dmp

              memory/860-51-0x0000000140000000-0x000000014000E000-memory.dmp

              memory/860-55-0x0000000140000000-0x000000014000E000-memory.dmp

              memory/860-52-0x0000000140000000-0x000000014000E000-memory.dmp

              memory/860-53-0x0000000140000000-0x000000014000E000-memory.dmp

              memory/1588-39-0x0000023BE01C0000-0x0000023BE0275000-memory.dmp

              memory/1588-38-0x0000023BE01A0000-0x0000023BE01BC000-memory.dmp

              memory/1588-40-0x0000023BDFF40000-0x0000023BDFF4A000-memory.dmp

              memory/1588-41-0x0000023BE03E0000-0x0000023BE03FC000-memory.dmp

              memory/1588-42-0x0000023BDFF50000-0x0000023BDFF5A000-memory.dmp

              memory/1588-43-0x0000023BE0400000-0x0000023BE041A000-memory.dmp

              memory/1588-44-0x0000023BE03C0000-0x0000023BE03C8000-memory.dmp

              memory/1588-45-0x0000023BE03D0000-0x0000023BE03D6000-memory.dmp

              memory/1588-46-0x0000023BE0420000-0x0000023BE042A000-memory.dmp

              memory/3320-59-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-58-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-71-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-70-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-60-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-57-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-61-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-63-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-64-0x0000021357F90000-0x0000021357FB0000-memory.dmp

              memory/3320-69-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-68-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-67-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-66-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-65-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/3320-62-0x0000000140000000-0x0000000140848000-memory.dmp

              memory/4200-0-0x00007FFF65B83000-0x00007FFF65B85000-memory.dmp

              memory/4200-16-0x00007FFF65B80000-0x00007FFF66641000-memory.dmp

              memory/4200-1-0x000002A9E9560000-0x000002A9E9582000-memory.dmp

              memory/4200-11-0x00007FFF65B80000-0x00007FFF66641000-memory.dmp

              memory/4200-12-0x00007FFF65B80000-0x00007FFF66641000-memory.dmp

              memory/4200-13-0x00007FFF65B80000-0x00007FFF66641000-memory.dmp