Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 18:24

General

  • Target

    2024-02-14_104f1dc94e8b93c28c23a91154faec0d_cryptolocker.exe

  • Size

    47KB

  • MD5

    104f1dc94e8b93c28c23a91154faec0d

  • SHA1

    a33ef4ef9fdc3b92cbda885520f5b6fc72b83625

  • SHA256

    3a6841ec84f286971360ac5dcb2879e94243b06c402a60b2b24905a87be2887b

  • SHA512

    b1dadb8aec04153243a298f57549ecad2de3eceacb4ec6815a792335f96dc1105149d86b57df8326fa69722d019328abbb283456b09d317ca879d7f2ec4c5a15

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8z2iaSIO/WZrEu/d+qmsUHQ1wsL:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ1V

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\2024-02-14_104f1dc94e8b93c28c23a91154faec0d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_104f1dc94e8b93c28c23a91154faec0d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4192
    • 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:1872

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          48KB

          MD5

          23bb1d56da8a3f574f3cf84519c76feb

          SHA1

          1ad28b697aae6cd9de27f8a5eed288b0c77b90c3

          SHA256

          0e8ca08beb59d1192a7608d1885d23f5ebedbd93537b96f2535a6cf6ebdf19ab

          SHA512

          a38d90b96eb38f2584a9e53bbbe62185048bc8c7ab5ecb99639b4ee47a879452e73db508064f6871f52c8a1acd8858163f24a266a4d9a4d373d2e73f3fded44a

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1872-16-0x00000000005F0000-0x00000000005F6000-memory.dmp

          Filesize

          24KB

        • memory/1872-18-0x0000000001F70000-0x0000000001F76000-memory.dmp

          Filesize

          24KB

        • memory/1872-21-0x0000000001F50000-0x0000000001F56000-memory.dmp

          Filesize

          24KB

        • memory/4192-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

          Filesize

          24KB

        • memory/4192-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

          Filesize

          24KB

        • memory/4192-2-0x0000000000610000-0x0000000000616000-memory.dmp

          Filesize

          24KB