Overview

overview

10

Static

static

10

2026-10-23...ry.exe

windows10-2004-x64

10

2026-10-23...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    23/10/2026, 08:54

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General

  • Target
    2026-10-23_a71b297c183a0fa76733a3db80a77e43_elex_remcos_wannacry.exe
  • Size 60KB
  • Sample261023-kt3faaxtbs
  • SHA256 ccd5a08514ca105928022c5348228999e63782e528d0d8061c2a20dd429236dd
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoveryexecutionstormserpersistenceworm

Malware Config

Signatures

  • Family: Stormser, StormDDoS, StormAttack, Stormer

    Stormser aka StormDDoS, StormAttack, and Stormer is a Windows worm written in C++.

    wormstormser
  • Detects Stormser aka Storm DDoS and StormAttack 1 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 1 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Executes dropped EXE 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-23_a71b297c183a0fa76733a3db80a77e43_elex_remcos_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-23_a71b297c183a0fa76733a3db80a77e43_elex_remcos_wannacry.exe"
    1⤵
    • Boot or Logon Autostart Execution: Active Setup
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4920
    • C:\Windows\{CFFB8D21-39DA-47d5-9E64-C5B1DE6FC991}.exe
      C:\Windows\{CFFB8D21-39DA-47d5-9E64-C5B1DE6FC991}.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4820
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\2026-1~1.EXE > nul
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:2328

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        {CFFB8D21-39DA-47d5-9E64-C5B1DE6FC991}.exe
        • Path C:\Windows\{CFFB8D21-39DA-47d5-9E64-C5B1DE6FC991}.exe
        • Size 60KB
        • SHA256 9664805bc325e6b9611191dedc08dbe34f670dca0542afc350e45e2a5a6f31f2
        • MD5 SHA1 SHA512 SSDEEP TLSH
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