Overview

overview

10

Static

static

10

bXClient.exe

windows7-x64

10

bXClient.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-01-2025 19:31

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General

  • Target

    bXClient.exe

  • Size

    42KB

  • MD5

    1197a13638ec84ea69c38d0a789a66a2

  • SHA1

    fc65c04ec53a09606c15055a7edc4a083190a418

  • SHA256

    12983048e2e21778b6db353a833f6ecd6a9745c2818d0968f9c882b1806681c1

  • SHA512

    12f62b6cea4f6346129d6c589d557d1481e43e749ebbd5d264ac925140da4b277560d4d75453a58847ad651562b5b230cd0650e968461a0f360054ec58b89fe5

  • SSDEEP

    768:g/CsBpA2DYSPd6ls3AyZrl2F59g8qZOCh60R8lE9:g/C2d40wF59g8qZOCU1E9

Score
10/10
xwormpersistencerattrojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

https://pastebin.com/raw/0Pj9kgRk:1

Mutex

ZywUmpapVFNqLmrC

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    msconfig.exe

  • pastebin_url

    https://pastebin.com/raw/0Pj9kgRk

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Xworm family
    xworm
  • 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 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 37 IoCs
  • 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 4 IoCs
  • Suspicious use of WriteProcessMemory 2 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\bXClient.exe
    "C:\Users\Admin\AppData\Local\Temp\bXClient.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:972
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "msconfig" /tr "C:\Users\Admin\msconfig.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1116
  • C:\Users\Admin\msconfig.exe
    C:\Users\Admin\msconfig.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1120
  • C:\Users\Admin\msconfig.exe
    C:\Users\Admin\msconfig.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3284
  • C:\Users\Admin\msconfig.exe
    C:\Users\Admin\msconfig.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1320

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\msconfig.exe.log
    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

    Download Submit

  • C:\Users\Admin\msconfig.exe
    Filesize

    42KB

    MD5

    1197a13638ec84ea69c38d0a789a66a2

    SHA1

    fc65c04ec53a09606c15055a7edc4a083190a418

    SHA256

    12983048e2e21778b6db353a833f6ecd6a9745c2818d0968f9c882b1806681c1

    SHA512

    12f62b6cea4f6346129d6c589d557d1481e43e749ebbd5d264ac925140da4b277560d4d75453a58847ad651562b5b230cd0650e968461a0f360054ec58b89fe5

    Download Submit

  • memory/972-0-0x00007FFCA5843000-0x00007FFCA5845000-memory.dmp

    Filesize

    8KB

    Download

  • memory/972-1-0x0000000000060000-0x0000000000070000-memory.dmp

    Filesize

    64KB

    Download

  • memory/972-6-0x00007FFCA5840000-0x00007FFCA6301000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/972-7-0x00007FFCA5843000-0x00007FFCA5845000-memory.dmp

    Filesize

    8KB

    Download

  • memory/972-8-0x00007FFCA5840000-0x00007FFCA6301000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/1120-11-0x00007FFCA5840000-0x00007FFCA6301000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/1120-13-0x00007FFCA5840000-0x00007FFCA6301000-memory.dmp

    Filesize

    10.8MB

    Download