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Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/01/2024, 00:31

General

  • Target

    2024-01-29_ace4e9debd2308259b2cb7a1b5644357_cryptolocker.exe

  • Size

    71KB

  • MD5

    ace4e9debd2308259b2cb7a1b5644357

  • SHA1

    00aaf178eba499c4cd6cbb6066eae609ea385895

  • SHA256

    f6c6698a6c3691aca395cae9d790e33adff7278e5c2b343116917c765d190806

  • SHA512

    928a34731551d1005c8737553b970f035c8d36db6a102d5a2d71d56934dd7cc8bc74d2a274eba2f8c0d6deed4baf60315405875b9e6f06de8b42a3b135f29120

  • SSDEEP

    1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1bZ:X6a+SOtEvwDpjBZYvQd2l

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\2024-01-29_ace4e9debd2308259b2cb7a1b5644357_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-29_ace4e9debd2308259b2cb7a1b5644357_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1900
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    71KB

    MD5

    f4739aa8c93e2365a5e5c0bf96c98fcd

    SHA1

    08d632d51f1e105cee7899c3e0db24e7f0fd1533

    SHA256

    d1f4cd9d27084b93301ef0956cc3d3c3e85222b02a2d3eb0dc5dd48165b96f46

    SHA512

    b8a7844539c9d769ffb04929e00c2cc7b6680db9fb885907ed3bb84d47d0cb9508780825d2f02bf1f8ae53443d010181a0ee5dfc210cadfa2e081466a4460352

  • memory/1900-0-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/1900-2-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

  • memory/1900-1-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/4564-17-0x0000000000850000-0x0000000000856000-memory.dmp

    Filesize

    24KB

  • memory/4564-21-0x0000000000830000-0x0000000000836000-memory.dmp

    Filesize

    24KB