Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    19/08/2026, 10:40

General

  • Target
    2026-08-19_f1fc73a13a1699932fbd5d3b6ed88218_cryptolocker_elex.exe
  • Size 55KB
  • Sample260819-mqmlrssbqa
  • SHA256 000c0f2d98f34779fcd35570af415c7a847a8f42f14b75167000c14f63ac1b75
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies trusted root certificate store through registry 1 TTPs 2 IoCs

    A root certificate was added, modified, or removed in the trusted certificate store registry paths.

  • 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.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-19_f1fc73a13a1699932fbd5d3b6ed88218_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-19_f1fc73a13a1699932fbd5d3b6ed88218_cryptolocker_elex.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4420
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies trusted root certificate store through registry
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:4548

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 55KB
        • SHA256 1f3ae5c4551276447a30097770ceea28b9ee93b8c37b7f222e2d4c84b6a0d3c0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4420-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/4420-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/4420-2-0x0000000000850000-0x0000000000856000-memory.dmp

        memory/4548-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/4548-18-0x00000000004F0000-0x00000000004F6000-memory.dmp