Analysis

  • max time kernel
    126s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    30-05-2024 15:27

General

  • Target

    XClient.exe

  • Size

    39KB

  • MD5

    dfc191c2d6414fbefcda695fedcac614

  • SHA1

    a2f01a5c1aa6da85d2d3593b71b509f50a880367

  • SHA256

    8fa8e02a32db4626290b784d771e051ad9d12f396c4e95267d8b072835e81be3

  • SHA512

    59fd4f6d6384b3df8eb67b47477e0474053ca30dff6a4bcf057bb2f8fb2a8a57eb4c11d8308d410290d55cde3bb47dd654eef9a235787a3b3e86103e9dfff9f2

  • SSDEEP

    768:WG7+qmT8ztyh6pwDYvCL2v6hCuuJf27iJ1fFWPG9/T6OOwhbjib5:VfmT8ztyh6pwDnKwCuuJfBFv9/T6OOwY

Malware Config

Extracted

Family

xworm

Version

5.0

C2

20.ip.gl.ply.gg:4219

Mutex

sGAsjjcwpIJWoflZ

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

aes.plain

Signatures

  • Detect Xworm Payload 3 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.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 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).

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 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⤵
    • 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:2384
    • 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:1936
    • 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:2636
    • 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:2612
    • 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:2796
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
      2⤵
      • Creates scheduled task(s)
      PID:2240
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {B02BD488-6751-46FD-B5C6-D977C3492C1F} S-1-5-21-3691908287-3775019229-3534252667-1000:UOTHCPHQ\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2212
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1624
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3012

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    8da8fad7262077dd513948d9becc6efb

    SHA1

    8e897557903fffa5131a9fd8f8e26a92759941b3

    SHA256

    c95cc63f469294019c476486cf3b94d6c5bee665be99ec3e29666bbcbe17bcbd

    SHA512

    49ac58991e72bad39fee550a342f112916d7471b3909a0002537bb42b28b027c19381af9184aa1571c0ddc85c5b881f834a75dc93b8ee4893c904f1b03b6a32d

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

    Filesize

    39KB

    MD5

    dfc191c2d6414fbefcda695fedcac614

    SHA1

    a2f01a5c1aa6da85d2d3593b71b509f50a880367

    SHA256

    8fa8e02a32db4626290b784d771e051ad9d12f396c4e95267d8b072835e81be3

    SHA512

    59fd4f6d6384b3df8eb67b47477e0474053ca30dff6a4bcf057bb2f8fb2a8a57eb4c11d8308d410290d55cde3bb47dd654eef9a235787a3b3e86103e9dfff9f2

  • memory/1624-37-0x0000000001320000-0x0000000001330000-memory.dmp

    Filesize

    64KB

  • memory/1936-6-0x0000000002340000-0x00000000023C0000-memory.dmp

    Filesize

    512KB

  • memory/1936-7-0x000000001B400000-0x000000001B6E2000-memory.dmp

    Filesize

    2.9MB

  • memory/1936-8-0x0000000002A10000-0x0000000002A18000-memory.dmp

    Filesize

    32KB

  • memory/2384-31-0x000007FEF58F3000-0x000007FEF58F4000-memory.dmp

    Filesize

    4KB

  • memory/2384-30-0x000000001B3E0000-0x000000001B460000-memory.dmp

    Filesize

    512KB

  • memory/2384-0-0x000007FEF58F3000-0x000007FEF58F4000-memory.dmp

    Filesize

    4KB

  • memory/2384-32-0x000000001B3E0000-0x000000001B460000-memory.dmp

    Filesize

    512KB

  • memory/2384-1-0x0000000000E60000-0x0000000000E70000-memory.dmp

    Filesize

    64KB

  • memory/2384-38-0x000000001D1C0000-0x000000001D510000-memory.dmp

    Filesize

    3.3MB

  • memory/2636-15-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

    Filesize

    32KB

  • memory/2636-14-0x000000001B5B0000-0x000000001B892000-memory.dmp

    Filesize

    2.9MB