Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    01/06/2026, 12:15

General

  • Target
    2026-06-01_b3756c459a5af8e1a58f0db5f88376c3_cryptolocker_elex.exe
  • Size 51KB
  • Sample260601-pfcd6ac18k
  • SHA256 b298512d4b145b14b477655683dc8efdda9a9270d01bb4681ba5db2d433c49e6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    Detection of CryptoLocker Variants 4 IoCs
  • Custom signature
    Detection of Cryptolocker Samples 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\2026-06-01_b3756c459a5af8e1a58f0db5f88376c3_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-01_b3756c459a5af8e1a58f0db5f88376c3_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2704
    • 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:2560

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 51KB
        • SHA256 926642223fe56834bf4f4801c43df3a3a786b3dda5dc2cc30aecd752f84b782c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2560-19-0x00000000021F0000-0x00000000021F6000-memory.dmp

        memory/2560-25-0x00000000021D0000-0x00000000021D6000-memory.dmp

        memory/2560-28-0x0000000000500000-0x000000000050B000-memory.dmp

        memory/2704-0-0x0000000000500000-0x000000000050B000-memory.dmp

        memory/2704-1-0x0000000002150000-0x0000000002156000-memory.dmp

        memory/2704-2-0x0000000002150000-0x0000000002156000-memory.dmp

        memory/2704-3-0x0000000002170000-0x0000000002176000-memory.dmp

        memory/2704-17-0x0000000000500000-0x000000000050B000-memory.dmp