Analysis

  • max time kernel
    87s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-02-2024 03:56

General

  • Target

    2024-02-03_e0a170b697581c5839ae75cb2554878d_cryptolocker.exe

  • Size

    45KB

  • MD5

    e0a170b697581c5839ae75cb2554878d

  • SHA1

    4549a8af310797f8e94b6c632f090d7f367e155d

  • SHA256

    d47b1196c0432085b93ab5a08719539d16be7546216ce5a1dd4cba325c1811aa

  • SHA512

    69e29d88a5c37820cd19ea7c0212b1ff4d4b6987a86ee46e07874d4ed9ee82471bee6ea12f6d7d79800f90c4756897f64daa893890e0fbad068b041e3245ab42

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr46xdUUU:vj+jsMQMOtEvwDpj5Hczer5iH

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\2024-02-03_e0a170b697581c5839ae75cb2554878d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-03_e0a170b697581c5839ae75cb2554878d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3912
    • 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:956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    45KB

    MD5

    6c3e2e6a6270b92fe2fe243c6717801c

    SHA1

    0b427d77d7f2acfd72e23fced294ad62467df7d8

    SHA256

    70ab16290ab39682c91f6dfbf53d0e5e85b461a478279408e4a257b0a831de44

    SHA512

    8cf921419d7a32258ac8c83499b053c0b0b5d20aa8441dcd941a4f9901d738b450223d7ba129368c02b0aa6d70d148ff77fd8e24af1e83e4f3480165b184e8e2

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/956-17-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/956-23-0x0000000002140000-0x0000000002146000-memory.dmp

    Filesize

    24KB

  • memory/3912-1-0x0000000002280000-0x0000000002286000-memory.dmp

    Filesize

    24KB

  • memory/3912-2-0x0000000002180000-0x0000000002186000-memory.dmp

    Filesize

    24KB

  • memory/3912-0-0x0000000002280000-0x0000000002286000-memory.dmp

    Filesize

    24KB