Analysis

  • max time kernel
    135s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 00:43

General

  • Target

    2024-05-23_364296a05beaaf312154f867cd017d5e_cryptolocker.exe

  • Size

    96KB

  • MD5

    364296a05beaaf312154f867cd017d5e

  • SHA1

    e7916c4c8c9cf2913b6d106203932d6ff586be0a

  • SHA256

    7c0439b3feffecde6a31651248bd11584614189d18dc4f20942d04ca68ee8a4a

  • SHA512

    dc66f425471212c67350b91d1b192a99c27109f1238bf20bd7f218f151d15fff46124aa4e8a36568dac7dc031b04abe5ecbc979e378019a4f28ce8e96313d3e2

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvAcP:xj+VGMOtEvwDpjubwQEI8UtzNcO8AcP

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\2024-05-23_364296a05beaaf312154f867cd017d5e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_364296a05beaaf312154f867cd017d5e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4436
    • 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:3516

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    96KB

    MD5

    c9d7a031737b075ce0a6f5c14c9de2f3

    SHA1

    8ca2776010706f8edd86a17fb470244b16fff900

    SHA256

    27992150998f32e8e75c001f41b606065622972db6574b7cc0212858bb73aba8

    SHA512

    a4a007fe45f12dfd2425ab79a9ecebee4842932de06d8dea8cca591996447ee5b786d4640fe6ce248c2340870c171b317019903b5fca12b5d9d0818207c352d0

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3516-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3516-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3516-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3516-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4436-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4436-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/4436-2-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/4436-9-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/4436-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB