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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 04:31

General

  • Target

    2024-04-30_257212040dd8715e35b3b5550f164768_cryptolocker.exe

  • Size

    47KB

  • MD5

    257212040dd8715e35b3b5550f164768

  • SHA1

    cf9db2de32e316a5ca3f4213f585d3ebd9f65a41

  • SHA256

    00c6deecf87f3258171c7c6d9e2ee36b040ab9d47c8e764c5821e2785d3bbe81

  • SHA512

    bb18c3928baa4fa4da6e3fdf16da99c3296d5b5e57dce055223a72b9c0c46f1c8d77057aa7151dc670a9c00d1096699da9f37772342e891f8fd24049429b4929

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9Rva/yYsE:xj+VGMOtEvwDpjy+viHsE

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-04-30_257212040dd8715e35b3b5550f164768_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_257212040dd8715e35b3b5550f164768_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:692
    • 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:3584

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    11e05f062ebf72bda7dd5ddde36e5a1d

    SHA1

    ffed88769891df3bcb1d0f8dc34219cbe1e61ec8

    SHA256

    8a92da9f7089c20677b5d6e8d85833487527512efaa169d05769a37b1740b4ab

    SHA512

    a9fff6ce10112c121be56a911a69e96f04ce18573c703aac845ff4596df1508556e91af23196475ecb29ff21e1b702c05907b7a1b43f0e89f16d6947a5226132

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/692-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/692-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/692-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/692-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/692-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3584-19-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3584-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/3584-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB