Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    04/06/2026, 00:45

General

  • Target
    2026-06-04_42c1620d19079927570d1de98c7e57b4_cryptolocker_elex.exe
  • Size 4.6MB
  • Sample260604-a4e3mags2y
  • SHA256 acd9e064a2e2d430242196333606d60bf73519ab2154dd13c8e7e426a290f65b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detects executables built or packed with MPress PE compressor 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\2026-06-04_42c1620d19079927570d1de98c7e57b4_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-04_42c1620d19079927570d1de98c7e57b4_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2380
    • 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:4720

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 4.6MB
        • SHA256 f42171a75bc3ed2ee6f2b0ae055b4393e2739841de580afe86bea7c9f24c03cf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2380-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/2380-1-0x0000000002E60000-0x0000000002E66000-memory.dmp

        memory/2380-2-0x0000000008000000-0x0000000008022000-memory.dmp

        memory/2380-3-0x0000000003110000-0x0000000003116000-memory.dmp

        memory/4720-17-0x0000000008000000-0x0000000008022000-memory.dmp

        memory/4720-25-0x0000000008000000-0x0000000008022000-memory.dmp

        memory/4720-19-0x0000000002340000-0x0000000002346000-memory.dmp