Overview

overview

7

Static

static

3

FallenStep.exe

windows10-2004-x64

7

FallenStep.exe

windows11-ltsc_2024-x64

7

Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/11/2026, 19:15

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General

  • Target
    FallenStep.exe
  • Size 863KB
  • Sample261113-xyamaaz13m
  • SHA256 c93668106edf6a9111ac2d088cd6569a3714d2711acedd01fdd1e1131738223a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
defense_evasiondiscovery

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 1 IoCs
    defense_evasion
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FallenStep.exe
    "C:\Users\Admin\AppData\Local\Temp\FallenStep.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4252
    • C:\Users\Admin\AppData\Local\Temp\prtgakhw.tmp
      "C:\Users\Admin\AppData\Local\Temp\FallenStep.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious behavior: EnumeratesProcesses
      PID:5084

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        prtgakhw.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\prtgakhw.tmp
        • Size 575KB
        • SHA256 922a60e0b499040772b6002884ea17e9ea5a8b620381f7c4fb59cfc919718165
        • MD5 SHA1 SHA512 SSDEEP TLSH
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