Overview

overview

10

Static

static

10

XClient.exe

windows7-x64

10

XClient.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    24-01-2025 18:20

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General

  • Target

    XClient.exe

  • Size

    41KB

  • MD5

    238c543e188e55b1270ba6a19ea64744

  • SHA1

    d1757ef39eb202f63ce852a6d22128aa05e6b4d1

  • SHA256

    9de66e3b9fd4a3272eeb379868e2cb3c627d3fa30a2c171dceaa91464378aa83

  • SHA512

    f529cefecf2c6ab4a6dbb8e72912bd3e96db68cb696c650c74d7da020858024ae6cecc65d95c2adbba7339e135b11d17f4577a0df52ef52a76b3bf70ea5ecb04

  • SSDEEP

    768:VYjChiGFs384cu8CDkUX9cV2gQ1XEgaaDTesF5Pa9W/BOwhr3su9:sCNFs384cu889cVJMXWaZF49WJOwJV9

Score
10/10
xwormpersistencerattrojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

9tGtRdYFdqtDOMr1

Attributes
  • Install_directory

    %AppData%

  • install_file

    winconfig.exe

  • pastebin_url

    https://pastebin.com/raw/aVpjakPZ

aes.plain

Signatures

  • Detect Xworm Payload 4 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Xworm family
    xworm
  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 46 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 9 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.

    persistence

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 use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2216
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "winconfig" /tr "C:\Users\Admin\AppData\Roaming\winconfig.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2724
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {7CA728D2-35D3-4FE6-84F1-782B2C933737} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:320
    • C:\Users\Admin\AppData\Roaming\winconfig.exe
      C:\Users\Admin\AppData\Roaming\winconfig.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1680
    • C:\Users\Admin\AppData\Roaming\winconfig.exe
      C:\Users\Admin\AppData\Roaming\winconfig.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2312

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\winconfig.exe
    Filesize

    41KB

    MD5

    238c543e188e55b1270ba6a19ea64744

    SHA1

    d1757ef39eb202f63ce852a6d22128aa05e6b4d1

    SHA256

    9de66e3b9fd4a3272eeb379868e2cb3c627d3fa30a2c171dceaa91464378aa83

    SHA512

    f529cefecf2c6ab4a6dbb8e72912bd3e96db68cb696c650c74d7da020858024ae6cecc65d95c2adbba7339e135b11d17f4577a0df52ef52a76b3bf70ea5ecb04

    Download Submit

  • memory/1680-12-0x0000000000120000-0x0000000000130000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2216-0-0x000007FEF63C3000-0x000007FEF63C4000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2216-1-0x0000000000BD0000-0x0000000000BE0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2216-2-0x000007FEF63C0000-0x000007FEF6DAC000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/2216-7-0x000007FEF63C3000-0x000007FEF63C4000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2216-8-0x000007FEF63C0000-0x000007FEF6DAC000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/2312-15-0x00000000012F0000-0x0000000001300000-memory.dmp

    Filesize

    64KB

    Download