Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2024, 07:46

General

  • Target

    2024-05-09_c6c2918f1aab4192b2c5d543520d641e_cryptolocker.exe

  • Size

    86KB

  • MD5

    c6c2918f1aab4192b2c5d543520d641e

  • SHA1

    1e9b4d333cd5708a64e58cb42ccda5fb29879f66

  • SHA256

    4598848b794ec60a8388b3a92e7eed1561a6e0d7bf72b432985d9dd750bfb4d1

  • SHA512

    aed4c21064d0e7cb242a665551208798d9c60b26141c5f1bfb7e4b937648b637f066c47868e66d2a9bcbc24c626900c1bf8b2478e42a8f8122af596386c59b5d

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNBli:vCjsIOtEvwDpj5H9YvQd2U

Score
9/10

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 system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-09_c6c2918f1aab4192b2c5d543520d641e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-09_c6c2918f1aab4192b2c5d543520d641e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3428
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:1944

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          86KB

          MD5

          1352aedd114de9039f4f7686470d04ab

          SHA1

          777ed2a88ff57ef6fc91d85925c267f2a042c30f

          SHA256

          6572f9540f63455f67b3181109fe0a60465740bc87937227792fdd9bc6a1b233

          SHA512

          bac6a18d1d8aad6509b2064b3c8050e7023da3d2515ed0bd253a4bdd57e2ef82b8ca0c700720961875bc80843e42911c6dc1abed62a2e5c4b29ca6258338d2aa

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1944-18-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/1944-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/3428-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3428-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3428-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB