Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    31/10/2024, 03:15

General

  • Target

    WizClient.exe

  • Size

    74KB

  • MD5

    69cad671f60367927329bbd20f91bed7

  • SHA1

    9aa6c82982591ebc0c64cc94d2efaac7378bde86

  • SHA256

    dc94e48f4fd4cdf8049e6ac2ea9b65df93936015c50e26d0c8d6b2217e7d539b

  • SHA512

    bb4a49b2eada56d9d9c0fd7b7464447460e7bb84c6416f632295197562e65a456d33099799d3083684c45150ad362d036ee0eb843745272d5accab5ff9a525f4

  • SSDEEP

    1536:ObGA+5D6BRZ2Ka+QRPPN7cmKuZbN5NTEkIG6QOj89RnXqDnnl:ObGpsBRZ4d9bZbN3EAOA9RnXqLl

Malware Config

Extracted

Family

xworm

C2

141.98.252.138.224:5552

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Signatures

  • Detect Xworm Payload 3 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 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).

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 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\WizClient.exe
    "C:\Users\Admin\AppData\Local\Temp\WizClient.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2096
    • 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\WizClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2800
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WizClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2920
    • 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\WizClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2584
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WizClient" /tr "C:\Users\Admin\AppData\Roaming\WizClient.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1776
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {B7E254FF-6907-4202-ADDC-DF28AF63AC7F} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2976
    • C:\Users\Admin\AppData\Roaming\WizClient.exe
      C:\Users\Admin\AppData\Roaming\WizClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2952
    • C:\Users\Admin\AppData\Roaming\WizClient.exe
      C:\Users\Admin\AppData\Roaming\WizClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2436

Network

        MITRE ATT&CK Enterprise v15

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        Downloads

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

          Filesize

          7KB

          MD5

          3b77e1c65a0bb126cc0982c3655d64b5

          SHA1

          a97023901694a13efdf76c995ba3b42de3e30c2e

          SHA256

          0b6b98f6499cba5cdc10a99ead344275d034024425b17ffe2dc26fce6f4b894e

          SHA512

          c6a10aaf5b07da744e4a385d725f3f4b002547dfde41b47896be1c2222379362a3599cd227e0fcab153dd4e13ac9b602de405fe33252f0591bf70dd98055ccd2

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

          Filesize

          74KB

          MD5

          69cad671f60367927329bbd20f91bed7

          SHA1

          9aa6c82982591ebc0c64cc94d2efaac7378bde86

          SHA256

          dc94e48f4fd4cdf8049e6ac2ea9b65df93936015c50e26d0c8d6b2217e7d539b

          SHA512

          bb4a49b2eada56d9d9c0fd7b7464447460e7bb84c6416f632295197562e65a456d33099799d3083684c45150ad362d036ee0eb843745272d5accab5ff9a525f4

        • memory/2096-1-0x00000000003A0000-0x00000000003B8000-memory.dmp

          Filesize

          96KB

        • memory/2096-32-0x000000001B190000-0x000000001B210000-memory.dmp

          Filesize

          512KB

        • memory/2096-0-0x000007FEF5443000-0x000007FEF5444000-memory.dmp

          Filesize

          4KB

        • memory/2096-31-0x000007FEF5443000-0x000007FEF5444000-memory.dmp

          Filesize

          4KB

        • memory/2096-30-0x000000001B190000-0x000000001B210000-memory.dmp

          Filesize

          512KB

        • memory/2800-7-0x000000001B6B0000-0x000000001B992000-memory.dmp

          Filesize

          2.9MB

        • memory/2800-8-0x00000000022C0000-0x00000000022C8000-memory.dmp

          Filesize

          32KB

        • memory/2800-6-0x0000000002960000-0x00000000029E0000-memory.dmp

          Filesize

          512KB

        • memory/2920-15-0x00000000022A0000-0x00000000022A8000-memory.dmp

          Filesize

          32KB

        • memory/2920-14-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

          Filesize

          2.9MB

        • memory/2952-36-0x00000000012A0000-0x00000000012B8000-memory.dmp

          Filesize

          96KB