Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/01/2024, 23:13

General

  • Target

    2024-01-18_ac093dce24b4dd7d822164a728fea2c9_cryptolocker.exe

  • Size

    68KB

  • MD5

    ac093dce24b4dd7d822164a728fea2c9

  • SHA1

    1b3818a1772a41e918be6d3761de94462bf56516

  • SHA256

    2b73d03167dfa587342156460aeca44e7de2b1368d34ae6c7602743a0e5db247

  • SHA512

    eb8c88a12a438dbf89f90f6023cd27717130252a129581358e929fcc5f7f08c711b299fdb69461694e250975be2de9fdb8954ee0bbe5ba96af597320e6c6855b

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/Rk:vj+jsMQMOtEvwDpj5HZYTjipvF248/

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\2024-01-18_ac093dce24b4dd7d822164a728fea2c9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-18_ac093dce24b4dd7d822164a728fea2c9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:640
    • 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:4556

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    68KB

    MD5

    f1eb143658ded44a5bc26f1e6c502cb5

    SHA1

    95f97ca1dcd7328e9193906ec32e463780d8f5cd

    SHA256

    245bdad9b72aeab11457b9b4b6bd93cb6c2549a8eb6762b4d5fbd1520455e4ac

    SHA512

    27a948768c3d7e0ab698a938854447b300c0ad6e277783a99c86f6406691cb1d4a25cff69e6115f9c5e364968a0a611352d1b387a79886655873704257ab29be

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/640-0-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/640-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/640-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

    Filesize

    24KB

  • memory/4556-17-0x0000000002110000-0x0000000002116000-memory.dmp

    Filesize

    24KB

  • memory/4556-23-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

    Filesize

    24KB