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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/02/2024, 05:04

General

  • Target

    2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe

  • Size

    103KB

  • MD5

    7e3800716ea57831b5b3104b6bd9a95e

  • SHA1

    d25a5dbf5caf2eb33575defdf1abbbcb10247b86

  • SHA256

    bff101067278aa9b061578ed55166ac550a48398a6799e663342f1866001b5ab

  • SHA512

    4a99d6f2f1507c8871630a7ff5ba818d1637cad5e0dea06e0d31b5cb5032f5356d96b3856a7b34652b17330a56ebedd660387ff6b88ba6a81bf01f299c7bed33

  • SSDEEP

    1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpwqWsvikFI:V6a+pOtEvwDpjtzb

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1224
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4792

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    103KB

    MD5

    186697d5749bcc0e239e03bbd6b56914

    SHA1

    7cc21d46c2a04292a41b05e3c3393daf1d2dedf5

    SHA256

    c140cc5fe588e1be34ce798af44d07dca67410093529d3e1c0a3e01bb4041211

    SHA512

    c1292d337f95b54d67d28be58a4b94d37740fbda113f6ec69a72d319e31d7cd06c9f58edcc51ede9b86a63dda82ab647a0fe02466f07497aff663220bfd0cf25

  • memory/1224-0-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/1224-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/1224-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4792-17-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4792-20-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB