Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/03/2024, 12:33

General

  • Target

    2024-03-19_5973569969f9c0bf02c2b72fd8044697_cryptolocker.exe

  • Size

    64KB

  • MD5

    5973569969f9c0bf02c2b72fd8044697

  • SHA1

    d76fd573b949cb903832a2a73306fec7b15ff023

  • SHA256

    134e15853b53718bc9d4adaf2870487fea16559cffbcc53464899cde56c03d7d

  • SHA512

    c5c82623a36127d62a5475e5fba041d3edf56986a110641d464caa52cdd0e17405a2f83903b6635dc86bf01ce09887d954c6729d7ab2cf2fd18fa80f5a4204b6

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEO10KmJr:6j+1NMOtEvwDpjr8ox8UDEy0Km1

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-03-19_5973569969f9c0bf02c2b72fd8044697_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-19_5973569969f9c0bf02c2b72fd8044697_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1544
    • 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:4924

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          64KB

          MD5

          061c84af42511d3148768956b92109ab

          SHA1

          9311d48318f3e19897187c091593fabbcf50ef60

          SHA256

          0dcad30c54837cbeb615fdb565ccd93e2fa6da4a4b74fc58a84d34d1313adc27

          SHA512

          7665454809decd3095fe3a73744c8f8d8ddf3f31e727d643dcddecc3a2fadd9368d79f97b5c2e0ddf35c2ddac6ba761ec4effc6885f5fcaa5a4ab8966a23b9f6

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1544-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/1544-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/1544-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/1544-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/1544-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4924-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4924-20-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/4924-21-0x0000000002080000-0x0000000002086000-memory.dmp

          Filesize

          24KB

        • memory/4924-49-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB