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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
    19/02/2024, 08:52

General

  • Target

    2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe

  • Size

    46KB

  • MD5

    c5db8b49a28cfda9d8c86c54104e1e89

  • SHA1

    01814312a96ffe0e53b191ab4f922ad1e0842e1f

  • SHA256

    5a96a8532e438520585af48a3556508d8749deb013edcc8e619f6d2b0811b3f2

  • SHA512

    3fac67df0e6a93989bdb5777e128cac4504973c7e8e6c61dd5dc527dc026bc2721b83d319762a532d6a993fceef87eb6374f870db7230a2cad8b59d9108e6022

  • SSDEEP

    768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoN:qmbhXDmjr5MOtEvwDpj5cDtKkQZQT

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • UPX dump on OEP (original entry point) 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\2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2020
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4676

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    906777c3ae952d17c42680ec2d16312a

    SHA1

    ec537f605fdeac93ef9496e520edebbc8ae22a89

    SHA256

    9c3527488723a5a84ec636f0f91e5ffa6198a5394524630f1e2b94b1dfa11f39

    SHA512

    97f9435255b08a2a700d988d1b3e66509e14d5e84d652076b6efe1b40e25ca2d6fd449df1a39ffb354c955de6e497b59d80638b334118287be5ce31a62218c57

  • memory/2020-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2020-1-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/2020-2-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/2020-3-0x0000000000690000-0x0000000000696000-memory.dmp

    Filesize

    24KB

  • memory/2020-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4676-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4676-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4676-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB