Analysis

  • max time kernel
    103s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250619-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250619-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/07/2025, 19:24

General

  • Target

    2025-07-02_21372c7ee0e5c698650da83074e6902e_cryptolocker_elex.exe

  • Size

    50KB

  • MD5

    21372c7ee0e5c698650da83074e6902e

  • SHA1

    b143ac5e339fe6fcd2e78d8798178dd2a6b10611

  • SHA256

    5ee190b355a61dd05679d5a63b0f9ee4b4803b6c38068092c738de8a18666d20

  • SHA512

    626a961b5581c534e3696ff7ca7b0f92c649b7a38b57f499d52d63b383d7d5f78f4a8029803fc6196d7f813a594213a982c83c4b3ec2b803a709163620563ec4

  • SSDEEP

    768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqgazO:bODOw9acifH+Ygai

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-07-02_21372c7ee0e5c698650da83074e6902e_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-07-02_21372c7ee0e5c698650da83074e6902e_cryptolocker_elex.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4668
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:2976

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\lossy.exe

          Filesize

          50KB

          MD5

          2a01201b49d5b3bb09db3863d94feb1f

          SHA1

          6e383e649ba0f18e61d988bf0a7ac476e8e9d0c1

          SHA256

          df7631f3d01b81c6e663e99742a150f35e49ee85dbd23cc4b6ccb608d572ad95

          SHA512

          cfa2ba86163979ef73376a20040337af3bccf1152e27fbcd091887ee47c93317d73bc4bc7f39ae46b72409f3afcf662471fc14c316ac19ed563f922fd4ea7781

        • C:\Users\Admin\AppData\Local\Temp\swenled.exe

          Filesize

          537B

          MD5

          590a2a16db7c9454e5429278e1e95347

          SHA1

          11dd68b8c510df635ff033c58fa002fdcd196927

          SHA256

          c5ffd9dbef8cebbf04436e0680847b95be3f8140e3b3d1e99fe7e743799dfd97

          SHA512

          7e55708920fe2541ab1236c7616d67fd85795e80bc5f399d9b101372c347534940f2f81d942bb094c2d188b23a3501439443afbc0ca142758708c909c009cfa3

        • memory/2976-18-0x0000000008000000-0x000000000800F000-memory.dmp

          Filesize

          60KB

        • memory/2976-20-0x0000000008000000-0x000000000800F000-memory.dmp

          Filesize

          60KB

        • memory/2976-21-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

          Filesize

          24KB

        • memory/4668-0-0x0000000008000000-0x000000000800F000-memory.dmp

          Filesize

          60KB

        • memory/4668-1-0x0000000008004000-0x0000000008005000-memory.dmp

          Filesize

          4KB

        • memory/4668-2-0x0000000000730000-0x0000000000736000-memory.dmp

          Filesize

          24KB

        • memory/4668-3-0x0000000008000000-0x000000000800F000-memory.dmp

          Filesize

          60KB

        • memory/4668-4-0x00000000020F0000-0x00000000020F6000-memory.dmp

          Filesize

          24KB