Analysis

  • max time kernel
    132s
  • max time network
    134s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/09/2026, 19:34

Errors

Reason
Machine shutdown

General

  • Target
    XWormClient.exe
  • Size 32KB
  • Sample260905-yacbmsff49
  • SHA256 cf14244fb788ca119fbc290c434897e7e928cd8b7bec19e501b92f8cabde38ae
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • 89.190.158.167:911

Mutex
  • x90mfbG7q12JM7dT

Attributes
  • install_file

    USB.exe

aes.plain

Signatures

  • Family: Xworm

    Xworm is a remote access trojan written in C#.

  • Detect Xworm Payload 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 18 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 5 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Modifies registry class 42 IoCs
  • Modifies registry key 1 TTPs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\XWormClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XWormClient.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1316
    • C:\Users\Admin\AppData\Local\Temp\aycsby.exe
      "C:\Users\Admin\AppData\Local\Temp\aycsby.exe"
      2⤵
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5216
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c reg delete HKCR /f
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:2632
        • C:\Windows\system32\reg.exe
          reg delete HKCR /f
          4⤵
          • Modifies registry class
          PID:552
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c reg delete HKCU /f
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:3968
        • C:\Windows\system32\reg.exe
          reg delete HKCU /f
          4⤵
          • Modifies registry key
          PID:3012
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c reg delete HKLM /f
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4912
        • C:\Windows\system32\reg.exe
          reg delete HKLM /f
          4⤵
          • Modifies registry key
          PID:2804
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c reg delete HKU /f
        3⤵
        • Executes a command shell one-liner
        PID:4700
        • C:\Windows\system32\reg.exe
          reg delete HKU /f
          4⤵
            PID:1952
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c reg delete HKCC /f
          3⤵
          • Executes a command shell one-liner
          PID:4164
          • C:\Windows\system32\reg.exe
            reg delete HKCC /f
            4⤵
              PID:4992
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x00000000000004B8 0x00000000000004C0
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4320
      • C:\Windows\system32\userinit.exe
        C:\Windows\system32\userinit.exe
        1⤵
          PID:4232
          • C:\Windows\Explorer.EXE
            C:\Windows\Explorer.EXE
            2⤵
              PID:2964
          • C:\Windows\system32\OpenWith.exe
            C:\Windows\system32\OpenWith.exe -Embedding
            1⤵
              PID:5476
            • C:\Windows\system32\OpenWith.exe
              C:\Windows\system32\OpenWith.exe -Embedding
              1⤵
                PID:4356
              • C:\Windows\system32\OpenWith.exe
                C:\Windows\system32\OpenWith.exe -Embedding
                1⤵
                  PID:3032
                • C:\Windows\system32\OpenWith.exe
                  C:\Windows\system32\OpenWith.exe -Embedding
                  1⤵
                    PID:5580
                  • C:\Windows\system32\OpenWith.exe
                    C:\Windows\system32\OpenWith.exe -Embedding
                    1⤵
                      PID:1576
                    • C:\Windows\system32\OpenWith.exe
                      C:\Windows\system32\OpenWith.exe -Embedding
                      1⤵
                        PID:4744
                      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                        1⤵
                          PID:5268
                        • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
                          "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
                          1⤵
                            PID:4336
                          • C:\Windows\system32\OpenWith.exe
                            C:\Windows\system32\OpenWith.exe -Embedding
                            1⤵
                              PID:4452
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k GPSvcGroup
                              1⤵
                                PID:5192

                              Network

                                    MITRE ATT&CK Enterprise v16

                                    Replay Monitor

                                    Loading Replay Monitor...

                                    Downloads

                                    microsoftwindows.client[1].xml

                                    • Path C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\PDE8CCIA\microsoftwindows.client[1].xml
                                    • Size 97B
                                    • SHA256 37ec805bdd7b2dc9a2f36beec44034af5780b4459cb2b7d0679db1370c911b8f
                                    • MD5 SHA1 SHA512 TLSH

                                    aycsby.exe

                                    • Path C:\Users\Admin\AppData\Local\Temp\aycsby.exe
                                    • Size 11KB
                                    • SHA256 1a7610cd29d915c7f4ad68d5238e4dd3cfc973de57ad81a177ba8ae5cb9a86c5
                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                    desktop.ini

                                    • Path C:\Users\Admin\Contacts\desktop.ini
                                    • Size 412B
                                    • SHA256 48a6703a09f1197ee85208d5821032b77d20b3368c6b4de890c44fb482149cf7
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Users\Admin\Documents\desktop.ini
                                    • Size 402B
                                    • SHA256 cafec240d998e4b6e92ad1329cd417e8e9cbd73157488889fd93a542de4a4844
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Users\Admin\Downloads\desktop.ini
                                    • Size 282B
                                    • SHA256 b029393ea7b7cf644fb1c9f984f57c1980077562ee2e15d0ffd049c4c48098d3
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Users\Admin\Links\desktop.ini
                                    • Size 504B
                                    • SHA256 a4234e2cf44c57609fd7cb0f9f0a33ee136b542fba5121ac02d85b38fb2ea02d
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Users\Admin\Music\desktop.ini
                                    • Size 504B
                                    • SHA256 8301e344371b0753d547b429c5fe513908b1c9813144f08549563ac7f4d7da68
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Users\Admin\Pictures\desktop.ini
                                    • Size 504B
                                    • SHA256 88856962cef670c087eda4e07d8f78465beeabb6143b96bd90f884a80af925b4
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Users\Admin\Saved Games\desktop.ini
                                    • Size 282B
                                    • SHA256 e6fdf8ed07b19b2a3b8eff05de7bc71152c85b377b9226f126dc54b58b930311
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Users\Admin\Searches\desktop.ini
                                    • Size 524B
                                    • SHA256 a9e8ad0792b546a4a8ce49eda82b327ad9581141312efec3ac6f2d3ad5a05f17
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Users\Admin\Videos\desktop.ini
                                    • Size 504B
                                    • SHA256 b287b639f6edd612f414caf000c12ba0555adb3a2643230cbdd5af4053284978
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Users\Public\AccountPictures\desktop.ini
                                    • Size 196B
                                    • SHA256 658d53a476592db7e0e09ecd0073b80315dc2d9041b2fb3bf96eb84ff89676cc
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\Windows\Application Shortcuts\desktop.ini
                                    • Size 174B
                                    • SHA256 1d9dcd07e5fa1748da3e7e4d57eca2e88a4c42e4f2cead9192e94325c32c2e4f
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini
                                    • Size 174B
                                    • SHA256 feea416e5e5c8aa81416b81fb25132d1c18b010b02663a253338dbdfb066e122
                                    • MD5 SHA1 SHA512 TLSH

                                    iconcache_48.db

                                    • Path C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_48.db
                                    • Size 1024KB
                                    • SHA256 10ef5c281972cac30f6df36af447ce2271b1d46dd309b052954070003be5b153
                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                    iconcache_idx.db

                                    • Path C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_idx.db
                                    • Size 7KB
                                    • SHA256 9e0429155152888f9864a61f48c5f5f4f7da6095ab79afd71a803a59ed5478cd
                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini
                                    • Size 196B
                                    • SHA256 4e252dbee2058e1cf6f78fc67568759a8ad213bcafe33192e55dd5712d7e4abd
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini
                                    • Size 302B
                                    • SHA256 873bcd7fc25e21142bdfcd6c8f2bea3e294a055e3f132d8a2b3407aba45074e1
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini
                                    • Size 432B
                                    • SHA256 eb315c9d165b4916e3b00e4d148b53a6c03a2f0694a6a8821d98e76f935ca6a8
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini
                                    • Size 174B
                                    • SHA256 be49aff1e82fddfc2ab9dfffcb7e7be100800e3653fd1d12b6f8fa6a0957fcac
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini
                                    • Size 174B
                                    • SHA256 cdb11958506a5ba5478e22ed472fa3ae422fe9916d674f290207e1fc29ae5a76
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini
                                    • Size 174B
                                    • SHA256 768b6fde6149d9ebbed1e339a72e8cc8c535e5c61d7c82752f7dff50923b7aed
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini
                                    • Size 174B
                                    • SHA256 8e00a24ae458effe00a55344f7f34189b4594613284745ff7d406856a196c531
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\Desktop\desktop.ini
                                    • Size 282B
                                    • SHA256 4b9d687ac625690fd026ed4b236dad1cac90ef69e7ad256cc42766a065b50026
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\Documents\desktop.ini
                                    • Size 418B
                                    • SHA256 954b525be189a7fee40084bce8a1d9380280d109d64695e0c09b940c708aa274
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\Downloads\desktop.ini
                                    • Size 298B
                                    • SHA256 d5e7d3ffbfeffe8c91236b30b1cd3c4cbb80059d16ff6edf52c2027874e1ebdf
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\Favorites\desktop.ini
                                    • Size 402B
                                    • SHA256 a45e345556901cd98b9bf8700b2a263f1da2b2e53dbdf69b9e6cfab6e0bd3464
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\Music\desktop.ini
                                    • Size 520B
                                    • SHA256 7edc1c721b5402e489554f848f85ccc8e190852a0ddcac22a6123c8263841340
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\Pictures\desktop.ini
                                    • Size 520B
                                    • SHA256 3d643252d2ab50d0e5078aced4cb1ab19b5e8d1ff0bedf03f3243ebf3caa5884
                                    • MD5 SHA1 SHA512 TLSH

                                    desktop.ini

                                    • Path C:\Windows\System32\config\systemprofile\Videos\desktop.ini
                                    • Size 520B
                                    • SHA256 b41bdfe903bf4ab529adf9a2624c5733f5e044d42a6cd6fed18fd2c281f7fcc5
                                    • MD5 SHA1 SHA512 TLSH

                                    RGID37E.tmp

                                    • Path C:\Windows\Temp\RGID37E.tmp
                                    • Size 24KB
                                    • SHA256 04a0fbd0b5c3e4f7e3558a3871fe3f3cce5013a330941c3e72b4cdb19c81f2ad
                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                    memory/1316-6-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/1316-1-0x0000000000760000-0x000000000076E000-memory.dmp

                                    memory/1316-11-0x000000001BAB0000-0x000000001BBA0000-memory.dmp

                                    memory/1316-8-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/1316-15-0x000000001CEB0000-0x000000001D046000-memory.dmp

                                    memory/1316-5-0x000000001BAB0000-0x000000001BBA0000-memory.dmp

                                    memory/1316-9-0x000000001BAB0000-0x000000001BBA0000-memory.dmp

                                    memory/1316-4-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/1316-7-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/1316-2-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/1316-3-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/1316-0-0x00007FFB7A3DF000-0x00007FFB7A3E0000-memory.dmp

                                    memory/2964-387-0x00000000053A0000-0x00000000053A1000-memory.dmp

                                    memory/4336-522-0x0000024384140000-0x0000024384160000-memory.dmp

                                    memory/4336-536-0x0000024394770000-0x0000024394790000-memory.dmp

                                    memory/4336-520-0x0000024381FB0000-0x0000024381FD0000-memory.dmp

                                    memory/4336-521-0x00000243941E0000-0x00000243942E0000-memory.dmp

                                    memory/4336-486-0x0000024380000000-0x0000024380100000-memory.dmp

                                    memory/5216-37-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/5216-386-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/5216-27-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/5216-26-0x00000000001D0000-0x00000000001DA000-memory.dmp

                                    memory/5216-459-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/5216-30-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/5216-32-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/5216-33-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/5216-34-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/5216-35-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/5216-36-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp

                                    memory/5216-385-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp