Analysis

  • max time kernel
    48s
  • max time network
    56s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240704-en
  • resource tags

    arch:x64arch:x86image:win11-20240704-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    07/07/2024, 09:54

General

  • Target

    Updatemmmm.exe

  • Size

    2.6MB

  • MD5

    61d3abff46a6bd2946925542c7d30397

  • SHA1

    1fed80a136e67a5b7b6846010a5853400886ee9c

  • SHA256

    b1a351ee61443b8558934dca6b2fa9efb0a6d2d18bae61ace5a761596604dbfa

  • SHA512

    e9e25995faff34da94d30394474471dba45f5993a2efd07f5fb8c15cfdf7b3efa7c89d6796c66323938a1c31b3b89bd7578bef7c4297c6a9b68811f00aa89975

  • SSDEEP

    49152:e+CCncEUAhZfuFtUasR7NICKP6Fhjf+POnLcjzlfXhITNE1u5xY13oNV:c8cMhZfuF6asRxm6Flf++olfX2u1OY13

Malware Config

Signatures

  • xmrig

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

  • XMRig Miner payload 7 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 12 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:3424
    • 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:2200
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c wusa /uninstall /kb:890830 /quiet /norestart
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2568
      • C:\Windows\system32\wusa.exe
        wusa /uninstall /kb:890830 /quiet /norestart
        3⤵
          PID:696
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop UsoSvc
        2⤵
        • Launches sc.exe
        PID:876
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop WaaSMedicSvc
        2⤵
        • Launches sc.exe
        PID:2856
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop wuauserv
        2⤵
        • Launches sc.exe
        PID:1556
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop bits
        2⤵
        • Launches sc.exe
        PID:3140
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop dosvc
        2⤵
        • Launches sc.exe
        PID:3988
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe delete "WindowsUpdate"
        2⤵
        • Launches sc.exe
        PID:4980
      • 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:2528
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe stop eventlog
        2⤵
        • Launches sc.exe
        PID:32
      • C:\Windows\system32\sc.exe
        C:\Windows\system32\sc.exe start "WindowsUpdate"
        2⤵
        • Launches sc.exe
        PID:3716
    • 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:1984
      • 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:2516
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c wusa /uninstall /kb:890830 /quiet /norestart
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3112
        • C:\Windows\system32\wusa.exe
          wusa /uninstall /kb:890830 /quiet /norestart
          3⤵
            PID:1252
        • C:\Windows\system32\sc.exe
          C:\Windows\system32\sc.exe stop UsoSvc
          2⤵
          • Launches sc.exe
          PID:1260
        • C:\Windows\system32\sc.exe
          C:\Windows\system32\sc.exe stop WaaSMedicSvc
          2⤵
          • Launches sc.exe
          PID:4116
        • C:\Windows\system32\sc.exe
          C:\Windows\system32\sc.exe stop wuauserv
          2⤵
          • Launches sc.exe
          PID:912
        • C:\Windows\system32\sc.exe
          C:\Windows\system32\sc.exe stop bits
          2⤵
          • Launches sc.exe
          PID:844
        • C:\Windows\system32\sc.exe
          C:\Windows\system32\sc.exe stop dosvc
          2⤵
          • Launches sc.exe
          PID:960
        • C:\Windows\system32\conhost.exe
          C:\Windows\system32\conhost.exe
          2⤵
            PID:3068
          • C:\Windows\system32\svchost.exe
            svchost.exe
            2⤵
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3660

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              • C:\ProgramData\Windows11\Updater.exe

                Filesize

                2.6MB

                MD5

                61d3abff46a6bd2946925542c7d30397

                SHA1

                1fed80a136e67a5b7b6846010a5853400886ee9c

                SHA256

                b1a351ee61443b8558934dca6b2fa9efb0a6d2d18bae61ace5a761596604dbfa

                SHA512

                e9e25995faff34da94d30394474471dba45f5993a2efd07f5fb8c15cfdf7b3efa7c89d6796c66323938a1c31b3b89bd7578bef7c4297c6a9b68811f00aa89975

              • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_u0acxbgs.oev.ps1

                Filesize

                60B

                MD5

                d17fe0a3f47be24a6453e9ef58c94641

                SHA1

                6ab83620379fc69f80c0242105ddffd7d98d5d9d

                SHA256

                96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                SHA512

                5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

              • memory/2200-0-0x00007FF811983000-0x00007FF811985000-memory.dmp

                Filesize

                8KB

              • memory/2200-9-0x0000026372260000-0x0000026372282000-memory.dmp

                Filesize

                136KB

              • memory/2200-10-0x00007FF811980000-0x00007FF812442000-memory.dmp

                Filesize

                10.8MB

              • memory/2200-11-0x00007FF811980000-0x00007FF812442000-memory.dmp

                Filesize

                10.8MB

              • memory/2200-14-0x00007FF811980000-0x00007FF812442000-memory.dmp

                Filesize

                10.8MB

              • memory/2516-35-0x0000018BF8590000-0x0000018BF8643000-memory.dmp

                Filesize

                716KB

              • memory/2516-34-0x0000018BF8210000-0x0000018BF822C000-memory.dmp

                Filesize

                112KB

              • memory/2516-36-0x0000018BF8650000-0x0000018BF865A000-memory.dmp

                Filesize

                40KB

              • memory/2516-37-0x0000018BF8790000-0x0000018BF87AC000-memory.dmp

                Filesize

                112KB

              • memory/2516-38-0x0000018BF8660000-0x0000018BF866A000-memory.dmp

                Filesize

                40KB

              • memory/2516-39-0x0000018BF87B0000-0x0000018BF87CA000-memory.dmp

                Filesize

                104KB

              • memory/2516-40-0x0000018BF8770000-0x0000018BF8778000-memory.dmp

                Filesize

                32KB

              • memory/2516-41-0x0000018BF8780000-0x0000018BF8786000-memory.dmp

                Filesize

                24KB

              • memory/2516-42-0x0000018BF87D0000-0x0000018BF87DA000-memory.dmp

                Filesize

                40KB

              • memory/3068-45-0x0000000140000000-0x000000014000E000-memory.dmp

                Filesize

                56KB

              • memory/3068-52-0x0000000140000000-0x000000014000E000-memory.dmp

                Filesize

                56KB

              • memory/3068-49-0x0000000140000000-0x000000014000E000-memory.dmp

                Filesize

                56KB

              • memory/3068-48-0x0000000140000000-0x000000014000E000-memory.dmp

                Filesize

                56KB

              • memory/3068-47-0x0000000140000000-0x000000014000E000-memory.dmp

                Filesize

                56KB

              • memory/3068-46-0x0000000140000000-0x000000014000E000-memory.dmp

                Filesize

                56KB

              • memory/3660-55-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB

              • memory/3660-54-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB

              • memory/3660-57-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB

              • memory/3660-56-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB

              • memory/3660-58-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB

              • memory/3660-61-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB

              • memory/3660-63-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB

              • memory/3660-62-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB

              • memory/3660-65-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB

              • memory/3660-59-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB

              • memory/3660-64-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB

              • memory/3660-60-0x0000021E30170000-0x0000021E30190000-memory.dmp

                Filesize

                128KB

              • memory/3660-53-0x0000000140000000-0x0000000140848000-memory.dmp

                Filesize

                8.3MB