Analysis

  • max time kernel
    122s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/03/2024, 21:42

General

  • Target

    2024-03-18_f6b57642b88d26cb0a05d6fb53cf96a2_cryptolocker.exe

  • Size

    38KB

  • MD5

    f6b57642b88d26cb0a05d6fb53cf96a2

  • SHA1

    13eab2ca7f2d1938c7b1b9d10de90910ab469dfd

  • SHA256

    b30f48a28567c986589440944aa76f9a5c27973f7883d4a866082b60e37be4c5

  • SHA512

    24c9d438c831ee1d0d6eb71091dba30d8e7eac029e18dc33bfbc38ff8dc19af6b47edef79a1abb2c7e193b7f48a12430d51afd8ca765e33411311aa6438bc36a

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenB8vfN:ZzFbxmLPWQMOtEvwDpjLeSfN

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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-18_f6b57642b88d26cb0a05d6fb53cf96a2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-18_f6b57642b88d26cb0a05d6fb53cf96a2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1132
    • 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:3764

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          38KB

          MD5

          1a8dfdc05ac08d61b51f9678cd2dfc3f

          SHA1

          ba674ee9c28c7216fe74a2b7d5e159a4954d5c00

          SHA256

          bacc59d01262c16cf55a4d3be63efefce4e212b22ffb1f307d3a41a3d86fad97

          SHA512

          9341daa5dbd273d92d1a4bf32d6f032352c31c9d38265a5cfb11d5ce1245ded3e560aaf4583c38d6cfe4536b99c3b80bb9f5d9ce24ae26a7e31df61920c0231b

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1132-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/1132-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/1132-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/1132-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/1132-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/3764-17-0x0000000000450000-0x0000000000490000-memory.dmp

          Filesize

          256KB

        • memory/3764-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3764-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB