Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    31/07/2026, 11:41

General

  • Target
    2026-07-31_758e35c000a0a580b895003992ecd7e2_cryptolocker_elex.exe
  • Size 45KB
  • Sample260731-ntewrsfk2x
  • SHA256 a7230c682ffddd830ea0785a22667ecb7e38cd31cf4b84257acc100f3e283884
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 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\2026-07-31_758e35c000a0a580b895003992ecd7e2_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-31_758e35c000a0a580b895003992ecd7e2_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4128
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3076

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        hasfj.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
        • Size 45KB
        • SHA256 3759dc03a4a23e2e47e0c9eaf991d4086febbef3ee87cc3c419a97650dcde2b5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3076-18-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/3076-20-0x00000000037F0000-0x00000000037F6000-memory.dmp

        memory/3076-26-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/4128-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/4128-1-0x0000000002270000-0x0000000002276000-memory.dmp

        memory/4128-2-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/4128-3-0x00000000022A0000-0x00000000022A6000-memory.dmp