Overview

overview

10

Static

static

10

VioletClient.exe

windows10-2004-x64

10

VioletClient.exe

windows10-ltsc_2021-x64

10

VioletClient.exe

windows11-21h2-x64

10

Analysis

  • user interaction
    yes
  • max time kernel
    56s
  • max time network
    58s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260130-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260130-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    17/02/2026, 17:26

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General

  • Target
    VioletClient.exe
  • Size 1.0MB
  • Sample260217-v1ac7afw2d
  • SHA256 5a923bba32dad3e89460759bae091bdfffcad12e01a114e2b9d0fd57f91a2e2c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
executionvioletwormpersistenceworm

Malware Config

Signatures

  • Detects VioletWorm 1 IoCs
  • VioletWorm

    VioletWorm is a Windows worm written in C#.

    wormvioletworm
  • Violetworm family
    violetworm
  • 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 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • 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 1 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\VioletClient.exe
    "C:\Users\Admin\AppData\Local\Temp\VioletClient.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4124
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "VioletClient" /tr "C:\Users\Admin\AppData\Roaming\VioletClient.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:3888
  • C:\Users\Admin\AppData\Roaming\VioletClient.exe
    C:\Users\Admin\AppData\Roaming\VioletClient.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5028
  • C:\Users\Admin\AppData\Roaming\VioletClient.exe
    "C:\Users\Admin\AppData\Roaming\VioletClient.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1556

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        VioletClient.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\VioletClient.exe.log
        • Size 1KB
        • SHA256 7bf24ff0f6791ef902937b3caba0de16814a2c898dfb103d922c48582b602379
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        VioletClient.exe
        • Path C:\Users\Admin\AppData\Roaming\VioletClient.exe
        • Size 1.0MB
        • SHA256 5a923bba32dad3e89460759bae091bdfffcad12e01a114e2b9d0fd57f91a2e2c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4124-0-0x0000000000C20000-0x0000000000D2A000-memory.dmp
        Download

        memory/4124-1-0x000000001BA70000-0x000000001BA80000-memory.dmp
        Download

        memory/4124-4-0x00000000016E0000-0x00000000016EC000-memory.dmp
        Download

        memory/4124-5-0x000000001BA70000-0x000000001BA80000-memory.dmp
        Download