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Analysis

  • max time kernel
    31s
  • max time network
    32s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    01/08/2024, 20:40

Errors

Reason
Machine shutdown

General

  • Target

    XClient.exe

  • Size

    80KB

  • MD5

    bfa950b37b6a4f8de71af861e677a8b4

  • SHA1

    2ee40bfbf2964d92c82256e5924169295dfdd225

  • SHA256

    07f94f8f6061ba95899914496edc5854aa810de56797d9004875276d60e21ade

  • SHA512

    235b514fac01b24edaef3aeb4209676789b6ba9264a8798cb7ae48c26d2455cdd8f254e92bbba688535acb69fd77b3c0a0a549cf97ece84c235cc74f72234e1a

  • SSDEEP

    1536:EI5NuEGJkEtydWqZQSp1eS+b59gxzhfxdl/5m6qeo//3Oy/4IK4Dax5:Eg1GhtktQGAS+b59cJ4eA/OlINDab

Malware Config

Extracted

Family

xworm

C2

full-self.gl.at.ply.gg:45212

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Signatures

  • Detect Xworm Payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:908
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1588
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1020
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4296
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      PID:3492
    • C:\Windows\SYSTEM32\shutdown.exe
      shutdown.exe /f /s /t 0
      2⤵
        PID:4140
    • C:\Windows\system32\LogonUI.exe
      "LogonUI.exe" /flags:0x0 /state0:0xa3aee055 /state1:0x41c64e6d
      1⤵
      • Modifies data under HKEY_USERS
      • Suspicious use of SetWindowsHookEx
      PID:700

    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

      de53b4ac0cfdd71568aa63df48cf3be6

      SHA1

      685c8a396ff2e1c62dc134190536a3d738200ae7

      SHA256

      1517f2d73a4d09821409ba4a3b51a1d96506039028db4c871e4795b57dfc0cac

      SHA512

      dbad0cfde69f0796a4dbdfd026971efc8ebd3189c32eb40294364285417a8632d9da01fceb4fc4ece30e22714002fb1daf3f3f3f8bcd5c6755f3a103e8b1d6ae

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

      Filesize

      1KB

      MD5

      faa21d72b439ecb4fe7b8acb2af8474b

      SHA1

      9a201c045a7ec2df06f1386b081e3871df2eef56

      SHA256

      2021b841de397f3a689dfab1ac6e7c10d4e015043bb715200414feb9bd323fb3

      SHA512

      6c309dc4defe55582c3fd51b65a4b0deed0fe94fb7a70fb969a9179fb036284aff133a28e1d3c2519f208de1f333197e856aab0802686ce6e061472e03e2ebbb

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

      Filesize

      1KB

      MD5

      c4e4aa463e374d2e64f4f87380f27576

      SHA1

      424726631656054768f0670928e4cbe2e4be2505

      SHA256

      b4e0d3b6bce93242d1fdc5883d0fd35c278c0b46eba1120628e2c558d438b954

      SHA512

      e218cca407fc10240ee316f7e85d00d2556bed906f76ab95309d4b3a2f2fbda0ce15737bc4c5feb19c7f0379e3fd82aebda6176bfcef1c3193604adc4ff6e0cb

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3m554blf.cgw.ps1

      Filesize

      1B

      MD5

      c4ca4238a0b923820dcc509a6f75849b

      SHA1

      356a192b7913b04c54574d18c28d46e6395428ab

      SHA256

      6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

      SHA512

      4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

    • memory/908-1-0x0000000000230000-0x000000000024A000-memory.dmp

      Filesize

      104KB

    • memory/908-185-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

      Filesize

      9.9MB

    • memory/908-184-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

      Filesize

      9.9MB

    • memory/908-0-0x00007FF98AAA3000-0x00007FF98AAA4000-memory.dmp

      Filesize

      4KB

    • memory/1588-10-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

      Filesize

      9.9MB

    • memory/1588-52-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

      Filesize

      9.9MB

    • memory/1588-48-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

      Filesize

      9.9MB

    • memory/1588-41-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

      Filesize

      9.9MB

    • memory/1588-11-0x000001B5F5C50000-0x000001B5F5CC6000-memory.dmp

      Filesize

      472KB

    • memory/1588-12-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

      Filesize

      9.9MB

    • memory/1588-9-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

      Filesize

      9.9MB

    • memory/1588-6-0x000001B5F5990000-0x000001B5F59B2000-memory.dmp

      Filesize

      136KB