Analysis

  • max time kernel
    93s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 01:23

General

  • Target

    2024-05-30_045ed09204f686dbe7301052f0f479b8_cryptolocker.exe

  • Size

    35KB

  • MD5

    045ed09204f686dbe7301052f0f479b8

  • SHA1

    989986d502d5565e46fb71b76d95ec0a7e1949e2

  • SHA256

    37ab9cc8e126ffd2df15a59b724a425ea8039072a30f4cbe080b6796d33fb11a

  • SHA512

    54bdd8610429ec51599795d0a67bd6176e08ebfe178071f230aaa23112ce73c94b06bd5f8328bd4f4d0fa55d85731dd556f82fb66718960d2a9b1fea4f80908a

  • SSDEEP

    768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5Pp7J9:bxNrC7kYo1Fxf2rY1d9

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-30_045ed09204f686dbe7301052f0f479b8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_045ed09204f686dbe7301052f0f479b8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4108
    • C:\Users\Admin\AppData\Local\Temp\pissa.exe
      "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:2400

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          35KB

          MD5

          019dc551538f01e0badf3963e2e5d3bb

          SHA1

          ffebc3b0031709c584f53533609f6a1b0423c749

          SHA256

          c6276c86a4b4e810aa790df1c72a8344e44438724d4d215dc537b7a9c15d3d87

          SHA512

          1be0113b6302eccffa21df57af115359df69d393aeeaafceccd098e74994d8c427e5a166483891f6b23e2f00ac7a88c1f603d31706e25926fc077d31d4e81767

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

          Filesize

          261B

          MD5

          11bed1c06d8f4680de5154405be20365

          SHA1

          9c3095f1aa0b02924c23592d1e86673bb0081ca1

          SHA256

          bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

          SHA512

          050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

        • memory/2400-17-0x0000000003010000-0x0000000003016000-memory.dmp

          Filesize

          24KB

        • memory/2400-23-0x0000000002020000-0x0000000002026000-memory.dmp

          Filesize

          24KB

        • memory/4108-0-0x0000000002250000-0x0000000002256000-memory.dmp

          Filesize

          24KB

        • memory/4108-1-0x0000000003150000-0x0000000003156000-memory.dmp

          Filesize

          24KB

        • memory/4108-8-0x0000000002250000-0x0000000002256000-memory.dmp

          Filesize

          24KB