Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    31/05/2026, 07:55

General

  • Target
    2026-05-31_c0818c6fd3ab4c9075ea4592a39d621d_cryptolocker_elex.exe
  • Size 53KB
  • Sample260531-jsjfcaew9k
  • SHA256 aa4da3823665a69f9f990216d0ff1d17adb09c0c2de7b4561cb84b7fb69eabb4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    Detection of CryptoLocker Variants 1 IoCs
  • Custom signature
    Detection of Cryptolocker Samples 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-31_c0818c6fd3ab4c9075ea4592a39d621d_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-31_c0818c6fd3ab4c9075ea4592a39d621d_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3528
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4876

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        asih.exe

        • Path C:\Users\Admin\AppData\Local\Temp\asih.exe
        • Size 53KB
        • SHA256 0cce4ba10a288331e0a7708f004d68de570518d019d23a5e725775121e2a4295
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3528-0-0x0000000002150000-0x0000000002156000-memory.dmp

        memory/3528-1-0x0000000002150000-0x0000000002156000-memory.dmp

        memory/3528-2-0x0000000002170000-0x0000000002176000-memory.dmp

        memory/4876-17-0x0000000002050000-0x0000000002056000-memory.dmp

        memory/4876-18-0x0000000002200000-0x0000000002206000-memory.dmp