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Analysis

  • max time kernel
    200s
  • max time network
    212s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250217-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    01/03/2025, 14:37

Errors

Reason
Machine shutdown

General

  • Target

    Xeno.exe

  • Size

    60KB

  • MD5

    5f83231a9defe33363c22c05cb083d4c

  • SHA1

    13cfab281b4d730a591f81adc0ae6c237675a65b

  • SHA256

    6044f92bdc0a3b4bc81146ab4df57428a0e106777131b8ffca1ee9f1a8d2962e

  • SHA512

    fdc814b0154dc517c14082ca9f658f8c490d09a08171eb6425e9394e01195b8474e229731811ad313ddabe020aa41a8778c705159b31d93b7e646b1f7942b959

  • SSDEEP

    1536:nFFgs2DJZRprX9iLX7al8Gq+bMIRWIEqcN6tOfVg8TB:n3h48Xp+bMfqOfVpTB

Malware Config

Extracted

Family

xworm

C2

cause-indexes.gl.at.ply.gg:17210

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Signatures

  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Detect Xworm Payload 1 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • 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.

  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 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.

  • UPX packed file 10 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • System policy modification 1 TTPs 3 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\Xeno.exe
    "C:\Users\Admin\AppData\Local\Temp\Xeno.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1104
    • 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\Xeno.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2036
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Xeno.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3472
    • 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:4352
    • 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:1428
    • C:\Users\Admin\AppData\Local\Temp\fbeptl.exe
      "C:\Users\Admin\AppData\Local\Temp\fbeptl.exe"
      2⤵
      • UAC bypass
      • Event Triggered Execution: Image File Execution Options Injection
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Writes to the Master Boot Record (MBR)
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • System policy modification
      PID:3524
  • C:\Users\Admin\AppData\Local\Temp\fbeptl.exe
    C:\Users\Admin\AppData\Local\Temp\fbeptl.exe explorer.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:2436

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

    3eb3833f769dd890afc295b977eab4b4

    SHA1

    e857649b037939602c72ad003e5d3698695f436f

    SHA256

    c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

    SHA512

    c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

    Filesize

    1KB

    MD5

    60b3262c3163ee3d466199160b9ed07d

    SHA1

    994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

    SHA256

    e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

    SHA512

    081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

    Filesize

    1KB

    MD5

    a8b49ac74fc72576ad0ffc1eaa981ea5

    SHA1

    fd1a7b88aedc63577ddbf854bb96d58482d70559

    SHA256

    1b7baa2ee7472f821db1e869f6fc516c4b49917876233e582e00bf056a3bd712

    SHA512

    3535763c685fc6f60a607da4f1a3b314834d8f1d63619363de71b744abb3ae5b1e1ab63914b0ba04d079dd237512d9854e12d0ab2bfcf4830cc165ec9672c6d4

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

    Filesize

    1KB

    MD5

    60ba7ac90c0e466144b48a90919960b6

    SHA1

    fe7f5d9e1d317f9409d8daa35d9c890f7e222d6a

    SHA256

    43d3c3113c66141b3a1f1f1bbf2d32a80128d029903ca58db09e9c6a9410ef9e

    SHA512

    92a1d912fd7be06820ec97b192b965d04ff44ff6a1c76b55405ecf20ca995762d823f52f174d8f48feb1d454716ab244adb4945febbf4fe4a6f91dd9791f87f2

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xdqky3ly.fsy.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\fbeptl.exe

    Filesize

    1.7MB

    MD5

    6e628c5531010f1053fff090a7699659

    SHA1

    237e5b8870092dd0e9a3b0fb76da93fcfce56516

    SHA256

    52d65a486dd027d9d6e3ca10ea808815ff0fda4e5032695333b7c2d5a5f95e41

    SHA512

    53eb023d70038b2820a6c0ed0a453307f90b22279e521fa8af3b6ef240ce022300a1d05794bf02d52f472c5adeb87c814373c5e29b3f13102c0128af06d5f0e7

  • memory/1104-63-0x0000000000940000-0x000000000094E000-memory.dmp

    Filesize

    56KB

  • memory/1104-0-0x00007FF8AA143000-0x00007FF8AA145000-memory.dmp

    Filesize

    8KB

  • memory/1104-61-0x0000000002560000-0x000000000256C000-memory.dmp

    Filesize

    48KB

  • memory/1104-60-0x00007FF8AA140000-0x00007FF8AAC02000-memory.dmp

    Filesize

    10.8MB

  • memory/1104-59-0x00007FF8AA140000-0x00007FF8AAC02000-memory.dmp

    Filesize

    10.8MB

  • memory/1104-148-0x0000000000960000-0x0000000000996000-memory.dmp

    Filesize

    216KB

  • memory/1104-163-0x0000000000990000-0x000000000099C000-memory.dmp

    Filesize

    48KB

  • memory/1104-1-0x0000000000180000-0x0000000000194000-memory.dmp

    Filesize

    80KB

  • memory/1104-58-0x00007FF8AA143000-0x00007FF8AA145000-memory.dmp

    Filesize

    8KB

  • memory/2036-15-0x00007FF8AA140000-0x00007FF8AAC02000-memory.dmp

    Filesize

    10.8MB

  • memory/2036-19-0x00007FF8AA140000-0x00007FF8AAC02000-memory.dmp

    Filesize

    10.8MB

  • memory/2036-16-0x00007FF8AA140000-0x00007FF8AAC02000-memory.dmp

    Filesize

    10.8MB

  • memory/2036-14-0x00007FF8AA140000-0x00007FF8AAC02000-memory.dmp

    Filesize

    10.8MB

  • memory/2036-13-0x00007FF8AA140000-0x00007FF8AAC02000-memory.dmp

    Filesize

    10.8MB

  • memory/2036-7-0x0000023D298F0000-0x0000023D29912000-memory.dmp

    Filesize

    136KB

  • memory/2036-12-0x00007FF8AA140000-0x00007FF8AAC02000-memory.dmp

    Filesize

    10.8MB

  • memory/2436-79-0x0000000000400000-0x00000000006D8000-memory.dmp

    Filesize

    2.8MB

  • memory/2436-78-0x0000000000400000-0x00000000006D8000-memory.dmp

    Filesize

    2.8MB

  • memory/3524-98-0x0000000000400000-0x00000000006D8000-memory.dmp

    Filesize

    2.8MB

  • memory/3524-101-0x0000000000400000-0x00000000006D8000-memory.dmp

    Filesize

    2.8MB

  • memory/3524-120-0x0000000000400000-0x00000000006D8000-memory.dmp

    Filesize

    2.8MB

  • memory/3524-141-0x0000000000400000-0x00000000006D8000-memory.dmp

    Filesize

    2.8MB

  • memory/3524-74-0x0000000000400000-0x00000000006D8000-memory.dmp

    Filesize

    2.8MB

  • memory/3524-164-0x0000000000400000-0x00000000006D8000-memory.dmp

    Filesize

    2.8MB

  • memory/3524-185-0x0000000000400000-0x00000000006D8000-memory.dmp

    Filesize

    2.8MB