Analysis

  • max time kernel
    200s
  • max time network
    208s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/03/2024, 23:07

Errors

Reason
Machine shutdown

General

  • Target
    XClient.exe
  • Size 68KB
  • Sample240328-236mqsbb9x
  • SHA256 dd68bd8d2da4ba41c11af01920eb6a89a5b7d96bfcf326ca0be04e886eebcaef
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

C2
  • 86.173.127.81:7000

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Signatures

  • Detect Xworm Payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Drops startup file 2 IoCs
  • Drops desktop.ini file(s) 17 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 33 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Drops startup file
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument C:\Users\Admin\Desktop\How To Decrypt My Files.html
      2⤵
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:4172
      • 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=0xfc,0x100,0x104,0xd8,0x108,0x7ffcfd7c46f8,0x7ffcfd7c4708,0x7ffcfd7c4718
        3⤵
          PID:2996
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2172,17742771224129272755,1163879962782628284,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2184 /prefetch:2
          3⤵
            PID:4684
          • 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=2172,17742771224129272755,1163879962782628284,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2244 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:572
          • 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=2172,17742771224129272755,1163879962782628284,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2928 /prefetch:8
            3⤵
              PID:2780
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,17742771224129272755,1163879962782628284,131072 --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=3108 /prefetch:1
              3⤵
                PID:2160
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,17742771224129272755,1163879962782628284,131072 --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=3280 /prefetch:1
                3⤵
                  PID:3468
              • C:\Windows\SYSTEM32\shutdown.exe
                shutdown.exe /f /r /t 0
                2⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:2368
            • C:\Windows\System32\CompPkgSrv.exe
              C:\Windows\System32\CompPkgSrv.exe -Embedding
              1⤵
                PID:3300
              • C:\Windows\System32\CompPkgSrv.exe
                C:\Windows\System32\CompPkgSrv.exe -Embedding
                1⤵
                  PID:3540
                • C:\Windows\System32\svchost.exe
                  C:\Windows\System32\svchost.exe -k UnistackSvcGroup
                  1⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4540
                • C:\Windows\system32\LogonUI.exe
                  "LogonUI.exe" /flags:0x4 /state0:0xa3999055 /state1:0x41c64e6d
                  1⤵
                  • Modifies data under HKEY_USERS
                  • Suspicious use of SetWindowsHookEx
                  PID:456

                Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      store.jfm

                      • Path C:\Users\Admin\AppData\Local\Comms\UnistoreDB\store.jfm
                      • Size 16KB
                      • SHA256 83da9c397baff71069d7921de0d28afe423e1391e51adb1c6854347ba6835ca1
                      • MD5 SHA1 SHA512 SSDEEP

                      settings.dat

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                      • Size 152B
                      • SHA256 cc773d1928f4a87e10944d153c23a7b20222b6795c9a0a09b81a94c1bd026ac3
                      • MD5 SHA1 SHA512

                      settings.dat

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                      • Size 152B
                      • SHA256 a43f82254638f7e05d1fea29e83545642f163a7a852f567fb2e94f0634347165
                      • MD5 SHA1 SHA512

                      Preferences

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                      • Size 6KB
                      • SHA256 4473d271c7dd54b3a2c68ecae01d9464754d51a6846d925ff0e2cb671cb244bb
                      • MD5 SHA1 SHA512 SSDEEP

                      Preferences

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                      • Size 6KB
                      • SHA256 3917ae9a844189867cf25fd7694cde2c3627bbc23a2e03738fdf5d6c1b7c1fea
                      • MD5 SHA1 SHA512 SSDEEP

                      Local State

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                      • Size 11KB
                      • SHA256 ba077969296a0f5c10c653960d5d10d7296e9f3e810f00b536f0179cb5b1f415
                      • MD5 SHA1 SHA512 SSDEEP

                      Local State

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                      • Size 11KB
                      • SHA256 ed56702861dcc10a91bc6bb40a23e0d9020f5d987733cf625c77fb8b2a59db02
                      • MD5 SHA1 SHA512 SSDEEP

                      How To Decrypt My Files.html

                      • Path C:\Users\Admin\Desktop\How To Decrypt My Files.html
                      • Size 672B
                      • SHA256 9663818672eb277bbdb605926338db8560b174020f1bd38374c5aa7e857b43aa
                      • MD5 SHA1 SHA512

                      NTUSER.DAT{53b39e88-18c4-11ea-a811-000d3aa4692b}.TMContainer00000000000000000001.regtrans-ms.ENC

                      • Path C:\Users\Admin\NTUSER.DAT{53b39e88-18c4-11ea-a811-000d3aa4692b}.TMContainer00000000000000000001.regtrans-ms.ENC
                      • Size 16B
                      • SHA256 489acd011c5f277a48ff62588b59479a10d6a6cd37472583bd3c6eb0d97a3dac
                      • MD5 SHA1 SHA512

                      memory/1676-6-0x000000001B5E0000-0x000000001B5F0000-memory.dmp

                      memory/1676-7-0x00007FFCE62C0000-0x00007FFCE6D81000-memory.dmp

                      memory/1676-0-0x0000000000620000-0x0000000000638000-memory.dmp

                      memory/1676-8-0x000000001B5E0000-0x000000001B5F0000-memory.dmp

                      memory/1676-11-0x0000000002940000-0x000000000294C000-memory.dmp

                      memory/1676-825-0x00007FFCE62C0000-0x00007FFCE6D81000-memory.dmp

                      memory/1676-1-0x00007FFCE62C0000-0x00007FFCE6D81000-memory.dmp

                      memory/1676-10-0x0000000000F10000-0x0000000000F1C000-memory.dmp

                      memory/4540-258-0x000001A842510000-0x000001A842511000-memory.dmp

                      memory/4540-267-0x000001A842120000-0x000001A842121000-memory.dmp

                      memory/4540-256-0x000001A842510000-0x000001A842511000-memory.dmp

                      memory/4540-259-0x000001A842510000-0x000001A842511000-memory.dmp

                      memory/4540-260-0x000001A842510000-0x000001A842511000-memory.dmp

                      memory/4540-261-0x000001A842510000-0x000001A842511000-memory.dmp

                      memory/4540-262-0x000001A842510000-0x000001A842511000-memory.dmp

                      memory/4540-263-0x000001A842510000-0x000001A842511000-memory.dmp

                      memory/4540-264-0x000001A842510000-0x000001A842511000-memory.dmp

                      memory/4540-265-0x000001A842510000-0x000001A842511000-memory.dmp

                      memory/4540-266-0x000001A842130000-0x000001A842131000-memory.dmp

                      memory/4540-257-0x000001A842510000-0x000001A842511000-memory.dmp

                      memory/4540-269-0x000001A842130000-0x000001A842131000-memory.dmp

                      memory/4540-272-0x000001A842120000-0x000001A842121000-memory.dmp

                      memory/4540-255-0x000001A8424E0000-0x000001A8424E1000-memory.dmp

                      memory/4540-284-0x000001A842060000-0x000001A842061000-memory.dmp

                      memory/4540-239-0x000001A839F40000-0x000001A839F50000-memory.dmp

                      memory/4540-305-0x000001A842260000-0x000001A842261000-memory.dmp

                      memory/4540-307-0x000001A842270000-0x000001A842271000-memory.dmp

                      memory/4540-308-0x000001A842270000-0x000001A842271000-memory.dmp

                      memory/4540-309-0x000001A842380000-0x000001A842381000-memory.dmp

                      memory/4540-223-0x000001A839E40000-0x000001A839E50000-memory.dmp