Analysis

  • max time kernel
    83s
  • max time network
    64s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-05-2024 13:59

General

  • Target

    XClient.exe

  • Size

    105KB

  • MD5

    1776474422ad23624684d38269ed0683

  • SHA1

    9ac322fbcc2bd9c18fe10ab338ff50fdc91977b8

  • SHA256

    5db58c7cb9d8c1d9ec6792b2a5fa3cc38de31f9fecbecc1d4ff2f4ac3a0340f6

  • SHA512

    4431c2c6c88e3604657e710d21068724646e0f3458949aac984b62464e81f534ec8404cf4a063217074fc6563e0e8329c1ce1d61647f73255e6f487c3130fc04

  • SSDEEP

    1536:8JroawfDQDzE1yh6lsA2l+boehSoW0Nn+6dOFRGaPcUk/uoDjSBSc7UtYV8:uZDg02sAO+bounNOfGbv1W0cgte8

Malware Config

Extracted

Family

xworm

C2

19.ip.gl.ply.gg:65468

speed-wheat.gl.at.ply.gg:65468

XWorm V5.2:123

Attributes
  • Install_directory

    %AppData%

  • install_file

    Delta.exe

Signatures

  • Detect Xworm Payload 2 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.

  • 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 1 IoCs
  • 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).

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of FindShellTrayWindow 22 IoCs
  • Suspicious use of SendNotifyMessage 22 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.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:3996
    • 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:1780
    • 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:4080
    • 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\Delta.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4300
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Delta.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1184
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Delta" /tr "C:\Users\Admin\AppData\Roaming\Delta.exe"
      2⤵
      • Creates scheduled task(s)
      PID:1068
  • C:\Users\Admin\AppData\Roaming\Delta.exe
    C:\Users\Admin\AppData\Roaming\Delta.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3004
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4896

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

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

    Filesize

    944B

    MD5

    77d622bb1a5b250869a3238b9bc1402b

    SHA1

    d47f4003c2554b9dfc4c16f22460b331886b191b

    SHA256

    f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

    SHA512

    d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

    Filesize

    944B

    MD5

    9c740b7699e2363ac4ecdf496520ca35

    SHA1

    aa8691a8c56500d82c5fc8c35209bc6fe50ab1d9

    SHA256

    be96c91b62ba9ba7072ab89e66543328c9e4395150f9dbe8067332d94a3ecc61

    SHA512

    8885683f96353582eb871209e766e7eba1a72a2837ce27ea298b7b5b169621d1fa3fce25346b6bfd258b52642644234da9559d4e765a2023a5a5fc1f544cc7af

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

    Filesize

    944B

    MD5

    92075279f2dbcaa5724ee5a47e49712f

    SHA1

    8dd3e2faa8432dde978946ebaf9054f7c6e0b2cb

    SHA256

    fd985ddd090621af25aa77aebff689c95ea7679ff0e81887124b2802ae3e9442

    SHA512

    744c62556233d9872f43ffb5a5a98aee20a44834436306f0a948c8c4072bdb46ef8044616593747edd645caaee60faf8b14fedb2d6df5f6019b5c73357d80d22

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h0l4wedn.3fu.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    105KB

    MD5

    1776474422ad23624684d38269ed0683

    SHA1

    9ac322fbcc2bd9c18fe10ab338ff50fdc91977b8

    SHA256

    5db58c7cb9d8c1d9ec6792b2a5fa3cc38de31f9fecbecc1d4ff2f4ac3a0340f6

    SHA512

    4431c2c6c88e3604657e710d21068724646e0f3458949aac984b62464e81f534ec8404cf4a063217074fc6563e0e8329c1ce1d61647f73255e6f487c3130fc04

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Delta.lnk

    Filesize

    759B

    MD5

    aee02c655b9ae7747251daedff07e19c

    SHA1

    02cbd114dc66b2becd87d1e298a78bd1200f69a3

    SHA256

    2951d82243de9dbc15da09f60db07b4fc4d4ed8bb8613727e4ffb9f60bd6ffc6

    SHA512

    451b717f1a440e4ce5e067e80ea84abe1fa248aa5da00a4fa0a485d705b00630d3fb8160984d081259bdd7114da457b91fe22f570bc9f5cf081473ea87d2ac44

  • memory/1780-7-0x0000024DFD100000-0x0000024DFD122000-memory.dmp

    Filesize

    136KB

  • memory/1780-12-0x00007FFE3EE60000-0x00007FFE3F921000-memory.dmp

    Filesize

    10.8MB

  • memory/1780-13-0x00007FFE3EE60000-0x00007FFE3F921000-memory.dmp

    Filesize

    10.8MB

  • memory/1780-14-0x00007FFE3EE60000-0x00007FFE3F921000-memory.dmp

    Filesize

    10.8MB

  • memory/1780-17-0x00007FFE3EE60000-0x00007FFE3F921000-memory.dmp

    Filesize

    10.8MB

  • memory/3996-56-0x00007FFE3EE60000-0x00007FFE3F921000-memory.dmp

    Filesize

    10.8MB

  • memory/3996-0-0x0000000000F00000-0x0000000000F20000-memory.dmp

    Filesize

    128KB

  • memory/3996-59-0x00007FFE3EE60000-0x00007FFE3F921000-memory.dmp

    Filesize

    10.8MB

  • memory/3996-1-0x00007FFE3EE63000-0x00007FFE3EE65000-memory.dmp

    Filesize

    8KB

  • memory/4896-74-0x000002EF86470000-0x000002EF86471000-memory.dmp

    Filesize

    4KB

  • memory/4896-64-0x000002EF86470000-0x000002EF86471000-memory.dmp

    Filesize

    4KB

  • memory/4896-68-0x000002EF86470000-0x000002EF86471000-memory.dmp

    Filesize

    4KB

  • memory/4896-63-0x000002EF86470000-0x000002EF86471000-memory.dmp

    Filesize

    4KB

  • memory/4896-73-0x000002EF86470000-0x000002EF86471000-memory.dmp

    Filesize

    4KB

  • memory/4896-72-0x000002EF86470000-0x000002EF86471000-memory.dmp

    Filesize

    4KB

  • memory/4896-71-0x000002EF86470000-0x000002EF86471000-memory.dmp

    Filesize

    4KB

  • memory/4896-70-0x000002EF86470000-0x000002EF86471000-memory.dmp

    Filesize

    4KB

  • memory/4896-69-0x000002EF86470000-0x000002EF86471000-memory.dmp

    Filesize

    4KB

  • memory/4896-62-0x000002EF86470000-0x000002EF86471000-memory.dmp

    Filesize

    4KB