Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/03/2024, 23:26

General

  • Target

    2024-03-11_4d858e3f434a4cc64e1ab197a199e594_cryptolocker.exe

  • Size

    39KB

  • MD5

    4d858e3f434a4cc64e1ab197a199e594

  • SHA1

    91898de39a4d5e65cd189247891a7282d5cf29aa

  • SHA256

    9bc04c729a9413d451f38ca7787cb39906c6dcc06d9aff818fe7d57253484b43

  • SHA512

    9895bafce2052f7f58473e69af22570efc5b24777109b6def5e949ab2fd457dc4349935148555a63579847ddc4d98e5bdda36b32857b4c5e514dc8b04805ae44

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnYY:m5nkFNMOtEvwDpjG8hgpYY

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-11_4d858e3f434a4cc64e1ab197a199e594_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-11_4d858e3f434a4cc64e1ab197a199e594_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1856
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:3352

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    c02cda5b877843e0defff0de677e3ace

    SHA1

    a5954af237a95e93bfa2c35347a6a589b30ecdb7

    SHA256

    f1e208cc438f2043b1435077e48e61d2b827385f6c740356699caad584e0b2fa

    SHA512

    0a279663e92e0c4ebfabdd89ed1efe09229e9917578da54926db6b83fc33e94730428c5003d694b63c97dba7838ab055f46068da26a626cd611a3f0db1a7e757

  • memory/1856-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1856-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/1856-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/1856-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/1856-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3352-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3352-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3352-26-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB